From 974600be2ce8ff9fc0ec71dc73cbd5476a66595f Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Tue, 4 Feb 2025 09:53:59 +0100 Subject: [PATCH 01/22] renepay: use getroutes Changelog-Added: renepay: use external call to [askrene-]getroutes instead of computing routes internally. Signed-off-by: Lagrang3 --- plugins/renepay/json.c | 55 +++++++++++++++ plugins/renepay/json.h | 4 ++ plugins/renepay/mods.c | 157 ++++++++++++++++++++++++++--------------- 3 files changed, 160 insertions(+), 56 deletions(-) diff --git a/plugins/renepay/json.c b/plugins/renepay/json.c index e48388fb308e..eb63ea6acf42 100644 --- a/plugins/renepay/json.c +++ b/plugins/renepay/json.c @@ -393,3 +393,58 @@ void json_myadd_blinded_path(struct json_stream *s, json_array_end(s); json_object_end(s); } + +bool json_to_myroute(const char *buf, + const jsmntok_t *tok, + struct route *route) +{ + u64 probability_ppm; + u32 final_delay; + const char *err = json_scan( + tmpctx, buf, tok, "{probability_ppm:%,amount_msat:%,final_cltv:%}", + JSON_SCAN(json_to_u64, &probability_ppm), + JSON_SCAN(json_to_msat, &route->amount_deliver), + JSON_SCAN(json_to_u32, &final_delay)); + + if (err) + return false; + route->success_prob = probability_ppm * 1e-6; + const jsmntok_t *pathtok = json_get_member(buf, tok, "path"); + if (!pathtok || pathtok->type != JSMN_ARRAY) + return false; + + assert(route->hops == NULL); + route->hops = tal_arr(route, struct route_hop, pathtok->size); + size_t i; + const jsmntok_t *hoptok; + json_for_each_arr(i, hoptok, pathtok) + { + struct route_hop *hop = &route->hops[i]; + struct short_channel_id_dir scidd; + struct amount_msat amount; + u32 delay; + err = json_scan(tmpctx, buf, hoptok, + "{short_channel_id_dir:%,next_node_id:%,amount_msat:%,delay:%}", + JSON_SCAN(json_to_short_channel_id_dir, &scidd), + JSON_SCAN(json_to_node_id, &hop->node_id), + JSON_SCAN(json_to_msat, &amount), + JSON_SCAN(json_to_u32, &delay)); + if (err) { + route->hops = tal_free(route->hops); + return false; + } + hop->scid = scidd.scid; + hop->direction = scidd.dir; + + /* FIXME: this convention is so weird. If we ever get to merge + * PR 7639, remember to remove this index adjustment. */ + if (i > 0) { + route->hops[i - 1].amount = amount; + route->hops[i - 1].delay = delay; + } + } + route->hops[i - 1].amount = route->amount_deliver; + route->hops[i - 1].delay = final_delay; + route->amount_sent = route->hops[0].amount; + return true; +} diff --git a/plugins/renepay/json.h b/plugins/renepay/json.h index 5abaa8348997..234c4f3daa74 100644 --- a/plugins/renepay/json.h +++ b/plugins/renepay/json.h @@ -25,4 +25,8 @@ void json_myadd_blinded_path(struct json_stream *s, const char *fieldname, const struct blinded_path *blinded_path); +bool json_to_myroute(const char *buf, + const jsmntok_t *tok, + struct route *route); + #endif /* LIGHTNING_PLUGINS_RENEPAY_JSON_H */ diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 2fffb341baaf..5dc005157d41 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -646,23 +646,79 @@ REGISTER_PAYMENT_MODIFIER(blindedhints, blindedhints_cb); /***************************************************************************** - * compute_routes + * getroutes * - * Compute the payment routes. + * Call askrene-getroutes */ -static struct command_result *compute_routes_cb(struct payment *payment) + +static struct command_result *getroutes_done(struct command *cmd, + const char *method, + const char *buf, + const jsmntok_t *tok, + struct payment *payment) { - assert(payment->status == PAYMENT_PENDING); struct routetracker *routetracker = payment->routetracker; assert(routetracker); - if (routetracker->computed_routes && - tal_count(routetracker->computed_routes)) + if (tal_count(routetracker->computed_routes) > 0) plugin_err(pay_plugin->plugin, "%s: no previously computed routes expected.", __func__); + routetracker->computed_routes = tal_free(routetracker->computed_routes); + const jsmntok_t *routestok = json_get_member(buf, tok, "routes"); + assert(routestok && routestok->type == JSMN_ARRAY); + routetracker->computed_routes = + tal_arr(routetracker, struct route *, 0); + + size_t i; + const jsmntok_t *r; + json_for_each_arr(i, r, routestok) + { + struct route *route = new_route( + routetracker->computed_routes, payment->groupid, + payment->next_partid++, payment->payment_info.payment_hash, + AMOUNT_MSAT(0), AMOUNT_MSAT(0)); + tal_arr_expand(&routetracker->computed_routes, route); + bool success = json_to_myroute(buf, r, route); + if (!success) { + plugin_err( + pay_plugin->plugin, + "%s: failed to parse route from getroutes, %.*s", + __func__, json_tok_full_len(r), + json_tok_full(buf, r)); + } + assert(success); + } + return payment_continue(payment); +} + +static struct command_result *getroutes_fail(struct command *cmd, + const char *method, + const char *buf, + const jsmntok_t *tok, + struct payment *payment) +{ + // FIXME: read the response + // if can we do something about his failure: + // disable channels or add biases + // return payment_continue(payment); + // else: + // return payment_fail(payment, PAY_STOPPED_RETRYING, "getroutes + // failed to find a feasible solution %s", explain_error(buf, + // tok)); + const jsmntok_t *messtok = json_get_member(buf, tok, "message"); + assert(messtok); + return payment_fail( + payment, PAYMENT_PENDING, + "getroutes failed to find a feasible solution: %.*s", + json_tok_full_len(messtok), json_tok_full(buf, messtok)); +} + +static struct command_result *getroutes_cb(struct payment *payment) +{ + assert(payment->status == PAYMENT_PENDING); struct amount_msat feebudget, fees_spent, remaining; /* Total feebudget */ @@ -693,57 +749,46 @@ static struct command_result *compute_routes_cb(struct payment *payment) return payment_continue(payment); } - enum jsonrpc_errcode errcode; - const char *err_msg = NULL; - - gossmap_apply_localmods(pay_plugin->gossmap, payment->local_gossmods); - - /* get_routes returns the answer, we assign it to the computed_routes, - * that's why we need to tal_free the older array. Maybe it would be - * better to pass computed_routes as a reference? */ - routetracker->computed_routes = tal_free(routetracker->computed_routes); - - /* Send get_routes a note that it should discard the last hop because we - * are actually solving a multiple destinations problem. */ - bool blinded_destination = true; - - // TODO: add an algorithm selector here - /* We let this return an unlikely path, as it's better to try once than - * simply refuse. Plus, models are not truth! */ - routetracker->computed_routes = get_routes( - routetracker, - &payment->payment_info, - &pay_plugin->my_id, - payment->routing_destination, - pay_plugin->gossmap, - pay_plugin->uncertainty, - payment->disabledmap, - remaining, - feebudget, - &payment->next_partid, - payment->groupid, - blinded_destination, - &errcode, - &err_msg); - - /* Otherwise the error message remains a child of the routetracker. */ - err_msg = tal_steal(tmpctx, err_msg); - - gossmap_remove_localmods(pay_plugin->gossmap, payment->local_gossmods); - - /* Couldn't feasible route, we stop. */ - if (!routetracker->computed_routes || - tal_count(routetracker->computed_routes) == 0) { - if (err_msg == NULL) - err_msg = tal_fmt( - tmpctx, "get_routes returned NULL error message"); - return payment_fail(payment, errcode, "%s", err_msg); - } - - return payment_continue(payment); + /* FIXME: + * call getroutes: + * input: source, destination, amount, maxfee, final_cltv, + * maxdelay, layers: [auto.localchans, auto.sourcefree, + * thispaymenthints, thispaymentexclude, renepayknowledge] + * + * possible outcomes: + * success: then continue + * fail with hint: try to fix and retry or fail payment + * */ + struct command *cmd = payment_command(payment); + struct out_req *req = jsonrpc_request_start( + cmd, "getroutes", getroutes_done, getroutes_fail, payment); + + // FIXME: add an algorithm selection in askrene such that we could + // retrieve a single path route if necessary, see issue 8042 + // FIXME: register layers before using then: + // -> register RENEPAY_LAYER on plugin startup + // -> register payment->payment_layer when payment is created + // -> payment_layer should auto clean + // -> register payment->command_layer when the payment execution + // starts + // -> command_layer should auto clean + + json_add_node_id(req->js, "source", &pay_plugin->my_id); + json_add_node_id(req->js, "destination", payment->routing_destination); + json_add_amount_msat(req->js, "amount_msat", remaining); + json_add_amount_msat(req->js, "maxfee_msat", feebudget); + json_add_u32(req->js, "final_cltv", payment->payment_info.final_cltv); + json_array_start(req->js, "layers"); + json_add_string(req->js, NULL, "auto.localchans"); + json_add_string(req->js, NULL, "auto.sourcefree"); + json_array_end(req->js); + // FIXME: add further constraints here if necessary when they become + // available in getroutes + // eg. json_add_u32(req->js, "maxdelay", payment->payment_info.maxdelay); + return send_outreq(req); } -REGISTER_PAYMENT_MODIFIER(compute_routes, compute_routes_cb); +REGISTER_PAYMENT_MODIFIER(getroutes, getroutes_cb); /***************************************************************************** * send_routes @@ -1272,7 +1317,7 @@ void *payment_virtual_program[] = { /*16*/ OP_CALL, &pendingsendpays_pay_mod, /*18*/ OP_CALL, &checktimeout_pay_mod, /*20*/ OP_CALL, &refreshgossmap_pay_mod, - /*22*/ OP_CALL, &compute_routes_pay_mod, + /*22*/ OP_CALL, &getroutes_pay_mod, /*24*/ OP_CALL, &send_routes_pay_mod, /*do*/ /*26*/ OP_CALL, &sleep_pay_mod, From 9ac2022141284752141cc5e43bd5343afe70226d Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 5 Feb 2025 13:56:58 +0100 Subject: [PATCH 02/22] renepay: hints using askrene Use askrene API to account for route-hints and blinded paths. Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 338 +++++++++++++++++++------------------- plugins/renepay/payment.c | 1 + plugins/renepay/payment.h | 3 + 3 files changed, 171 insertions(+), 171 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 5dc005157d41..7cc4523557ea 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -91,12 +91,18 @@ static struct command_result *payment_rpc_failure(struct command *cmd, json_tok_full_len(toks), json_tok_full(buffer, toks)); } -static void add_hintchan(struct payment *payment, const struct node_id *src, - const struct node_id *dst, u16 cltv_expiry_delta, - const struct short_channel_id scid, u32 fee_base_msat, - u32 fee_proportional_millionths, - const struct amount_msat *chan_htlc_min, - const struct amount_msat *chan_htlc_max); +/* Use this function to log failures in batch requests. */ +static struct command_result *log_payment_err(struct command *cmd, + const char *method, + const char *buf, + const jsmntok_t *tok, + struct payment *payment) +{ + plugin_log(cmd->plugin, LOG_UNUSUAL, "%s failed: '%.*s'", method, + json_tok_full_len(tok), json_tok_full(buf, tok)); + return command_still_pending(cmd); +} + /***************************************************************************** * previoussuccess @@ -253,29 +259,6 @@ static struct command_result *initial_sanity_checks_cb(struct payment *payment) REGISTER_PAYMENT_MODIFIER(initial_sanity_checks, initial_sanity_checks_cb); -/***************************************************************************** - * selfpay - */ - -static struct command_result *selfpay_cb(struct payment *payment) -{ - /* A different approach to self-pay: create a fake channel from the - * bolt11 destination to the routing_destination (a fake node_id). */ - if (!payment->payment_info.blinded_paths) { - struct amount_msat htlc_min = AMOUNT_MSAT(0); - struct amount_msat htlc_max = AMOUNT_MSAT((u64)1000*100000000); - struct short_channel_id scid = {.u64 = 0}; - add_hintchan(payment, &payment->payment_info.destination, - payment->routing_destination, - /* cltv delta = */ 0, scid, - /* base fee = */ 0, - /* ppm = */ 0, &htlc_min, &htlc_max); - } - return payment_continue(payment); -} - -REGISTER_PAYMENT_MODIFIER(selfpay, selfpay_cb); - /***************************************************************************** * getmychannels * @@ -457,111 +440,75 @@ REGISTER_PAYMENT_MODIFIER(refreshgossmap, refreshgossmap_cb); * network. */ -static void uncertainty_remove_channel(struct chan_extra *ce, - struct uncertainty *uncertainty) +static struct command_result *hints_done(struct command *cmd, + struct payment *payment) { - chan_extra_map_del(uncertainty->chan_extra_map, ce); + return payment_continue(payment); } -static void add_hintchan(struct payment *payment, const struct node_id *src, - const struct node_id *dst, u16 cltv_expiry_delta, - const struct short_channel_id scid, u32 fee_base_msat, + +static void add_hintchan(struct command *cmd, + struct request_batch *batch, + struct payment *payment, + const struct node_id *src, + const struct node_id *dst, + u16 cltv_expiry_delta, + const struct short_channel_id scid, + u32 fee_base_msat, u32 fee_proportional_millionths, + const struct amount_msat *chan_capacity, const struct amount_msat *chan_htlc_min, const struct amount_msat *chan_htlc_max) { - assert(payment); - assert(payment->local_gossmods); - - const char *errmsg; - struct chan_extra *ce = - uncertainty_find_channel(pay_plugin->uncertainty, scid); - - if (!ce) { - struct short_channel_id_dir scidd; - /* We assume any HTLC is allowed */ - struct amount_msat htlc_min = AMOUNT_MSAT(0), htlc_max = MAX_CAPACITY; - - if (chan_htlc_min) - htlc_min = *chan_htlc_min; - if (chan_htlc_max) - htlc_max = *chan_htlc_max; - - struct amount_msat fee_base = amount_msat(fee_base_msat); - bool enabled = true; - scidd.scid = scid; - scidd.dir = node_id_idx(src, dst); - - /* This channel is not public, we don't know his capacity - One possible solution is set the capacity to - MAX_CAP and the state to [0,MAX_CAP]. Alternatively we could - the capacity to amount and state to [amount,amount], but that - wouldn't work if the recepient provides more than one hints - telling us to partition the payment in multiple routes. */ - ce = uncertainty_add_channel(pay_plugin->uncertainty, scid, - MAX_CAPACITY); - if (!ce) { - errmsg = tal_fmt(tmpctx, - "Unable to find/add scid=%s in the " - "local uncertainty network", - fmt_short_channel_id(tmpctx, scid)); - goto function_error; - } - /* FIXME: features? */ - if (!gossmap_local_addchan(payment->local_gossmods, src, dst, - scid, MAX_CAPACITY, NULL) || - !gossmap_local_updatechan( - payment->local_gossmods, &scidd, - &enabled, &htlc_min, &htlc_max, - &fee_base, &fee_proportional_millionths, - &cltv_expiry_delta)) { - errmsg = tal_fmt( - tmpctx, - "Failed to update scid=%s in the local_gossmods.", - fmt_short_channel_id(tmpctx, scid)); - goto function_error; - } - /* We want these channel hints destroyed when the local_gossmods - * are freed. */ - /* FIXME: these hints are global in the uncertainty network if - * two payments happen concurrently we will have race - * conditions. The best way to avoid this is to use askrene and - * it's layered API. */ - tal_steal(payment->local_gossmods, ce); - tal_add_destructor2(ce, uncertainty_remove_channel, - pay_plugin->uncertainty); - } else { - /* The channel is pubic and we already keep track of it in the - * gossmap and uncertainty network. It would be wrong to assume - * that this channel has sufficient capacity to forward the - * entire payment! Doing so leads to knowledge updates in which - * the known min liquidity is greater than the channel's - * capacity. */ - } - - return; + struct amount_msat htlc_min = AMOUNT_MSAT(0), htlc_max = MAX_CAPACITY, + capacity = MAX_CAPACITY; + + if (chan_capacity) + capacity = *chan_capacity; + if (chan_htlc_min) + htlc_min = *chan_htlc_min; + if (chan_htlc_max) + htlc_max = *chan_htlc_max; + htlc_max = amount_msat_min(htlc_max, capacity); + htlc_min = amount_msat_min(htlc_min, htlc_max); -function_error: - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, - "Failed to update hint channel %s: %s", - fmt_short_channel_id(tmpctx, scid), - errmsg); + assert(payment); + struct out_req *req; + struct short_channel_id_dir scidd = {.scid = scid, + .dir = node_id_idx(src, dst)}; + + req = add_to_batch(cmd, batch, "askrene-create-channel"); + json_add_string(req->js, "layer", payment->payment_layer); + json_add_node_id(req->js, "source", src); + json_add_node_id(req->js, "destination", dst); + json_add_short_channel_id(req->js, "short_channel_id", scidd.scid); + json_add_amount_msat(req->js, "capacity_msat", capacity); + send_outreq(req); + + req = add_to_batch(cmd, batch, "askrene-update-channel"); + json_add_string(req->js, "layer", payment->payment_layer); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_bool(req->js, "enabled", true); + json_add_amount_msat(req->js, "htlc_minimum_msat", htlc_min); + json_add_amount_msat(req->js, "htlc_maximum_msat", htlc_max); + json_add_u32(req->js, "fee_base_msat", fee_base_msat); + json_add_u32(req->js, "fee_proportional_millionths", + fee_proportional_millionths); + json_add_u32(req->js, "cltv_expiry_delta", cltv_expiry_delta); + send_outreq(req); } -static struct command_result *routehints_done(struct command *cmd UNUSED, - const char *method UNUSED, - const char *buf UNUSED, - const jsmntok_t *result UNUSED, - struct payment *payment) +static struct command_result *routehints_cb(struct payment *payment) { - // FIXME are there route hints for B12? assert(payment); - assert(payment->local_gossmods); - + struct command *cmd = payment_command(payment); const struct node_id *destination = &payment->payment_info.destination; struct route_info **routehints = payment->payment_info.routehints; - assert(routehints); + if (!routehints) + return payment_continue(payment); const size_t nhints = tal_count(routehints); + struct request_batch *batch = + request_batch_new(cmd, NULL, log_payment_err, hints_done, payment); /* Hints are added to the local_gossmods. */ for (size_t i = 0; i < nhints; i++) { /* Each one, presumably, leads to the destination */ @@ -569,40 +516,15 @@ static struct command_result *routehints_done(struct command *cmd UNUSED, const struct node_id *end = destination; for (int j = tal_count(r) - 1; j >= 0; j--) { - add_hintchan(payment, &r[j].pubkey, end, + add_hintchan(cmd, batch, payment, &r[j].pubkey, end, r[j].cltv_expiry_delta, r[j].short_channel_id, r[j].fee_base_msat, r[j].fee_proportional_millionths, - NULL, NULL); + NULL, NULL, NULL); end = &r[j].pubkey; } } - - /* Add hints to the uncertainty network. */ - gossmap_apply_localmods(pay_plugin->gossmap, payment->local_gossmods); - int skipped_count = - uncertainty_update(pay_plugin->uncertainty, pay_plugin->gossmap); - gossmap_remove_localmods(pay_plugin->gossmap, payment->local_gossmods); - if (skipped_count) - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, - "%s: uncertainty was updated but %d channels have " - "been ignored.", - __func__, skipped_count); - - return payment_continue(payment); -} - -static struct command_result *routehints_cb(struct payment *payment) -{ - if (payment->payment_info.routehints == NULL) - return payment_continue(payment); - struct command *cmd = payment_command(payment); - assert(cmd); - struct out_req *req = jsonrpc_request_start( - cmd, "waitblockheight", routehints_done, - payment_rpc_failure, payment); - json_add_num(req->js, "blockheight", 0); - return send_outreq(req); + return batch_done(cmd, batch); } REGISTER_PAYMENT_MODIFIER(routehints, routehints_cb); @@ -617,29 +539,46 @@ REGISTER_PAYMENT_MODIFIER(routehints, routehints_cb); static struct command_result *blindedhints_cb(struct payment *payment) { - if (payment->payment_info.blinded_paths == NULL) - return payment_continue(payment); - + struct command *cmd = payment_command(payment); struct payment_info *pinfo = &payment->payment_info; - struct short_channel_id scid; - struct node_id src; - - for (size_t i = 0; i < tal_count(pinfo->blinded_paths); i++) { - const struct blinded_payinfo *payinfo = - pinfo->blinded_payinfos[i]; - const struct blinded_path *path = pinfo->blinded_paths[i]; - - scid.u64 = i; // a fake scid - node_id_from_pubkey(&src, &path->first_node_id.pubkey); - - add_hintchan(payment, &src, payment->routing_destination, - payinfo->cltv_expiry_delta, scid, - payinfo->fee_base_msat, - payinfo->fee_proportional_millionths, - &payinfo->htlc_minimum_msat, - &payinfo->htlc_maximum_msat); + struct request_batch *batch = + request_batch_new(cmd, NULL, log_payment_err, hints_done, payment); + + if (payment->payment_info.blinded_paths == NULL){ + /* a BOLT11 invoice, we add only one fake channel */ + struct amount_msat htlc_min = AMOUNT_MSAT(0); + struct amount_msat htlc_max = AMOUNT_MSAT((u64)1000*100000000); + struct short_channel_id scid = {.u64 = 0}; + add_hintchan(cmd, batch, payment, &pinfo->destination, + payment->routing_destination, + /* cltv delta = */ 0, scid, + /* base fee = */ 0, + /* ppm = */ 0, + /* capacity = ? */ NULL, + &htlc_min, &htlc_max); + } else { + struct short_channel_id scid; + struct node_id src; + for (size_t i = 0; i < tal_count(pinfo->blinded_paths); i++) { + const struct blinded_payinfo *payinfo = + pinfo->blinded_payinfos[i]; + const struct blinded_path *path = + pinfo->blinded_paths[i]; + + scid.u64 = i; // a fake scid + node_id_from_pubkey(&src, &path->first_node_id.pubkey); + + add_hintchan(cmd, batch, payment, &src, + payment->routing_destination, + payinfo->cltv_expiry_delta, scid, + payinfo->fee_base_msat, + payinfo->fee_proportional_millionths, + NULL, + &payinfo->htlc_minimum_msat, + &payinfo->htlc_maximum_msat); + } } - return payment_continue(payment); + return batch_done(cmd, batch); } REGISTER_PAYMENT_MODIFIER(blindedhints, blindedhints_cb); @@ -651,6 +590,14 @@ REGISTER_PAYMENT_MODIFIER(blindedhints, blindedhints_cb); * Call askrene-getroutes */ +/* The last hop is an artifact for handling self-payments and blinded paths. */ +static void prune_last_hop(struct route *route) +{ + const size_t pathlen = tal_count(route->hops); + assert(pathlen > 0); + route->path_num = route->hops[pathlen - 1].scid.u64; + tal_arr_remove(&route->hops, pathlen - 1); +} static struct command_result *getroutes_done(struct command *cmd, const char *method, @@ -689,6 +636,7 @@ static struct command_result *getroutes_done(struct command *cmd, __func__, json_tok_full_len(r), json_tok_full(buf, r)); } + prune_last_hop(route); assert(success); } return payment_continue(payment); @@ -781,6 +729,7 @@ static struct command_result *getroutes_cb(struct payment *payment) json_array_start(req->js, "layers"); json_add_string(req->js, NULL, "auto.localchans"); json_add_string(req->js, NULL, "auto.sourcefree"); + json_add_string(req->js, NULL, payment->payment_layer); json_array_end(req->js); // FIXME: add further constraints here if necessary when they become // available in getroutes @@ -1187,6 +1136,53 @@ static struct command_result *knowledgerelax_cb(struct payment *payment) REGISTER_PAYMENT_MODIFIER(knowledgerelax, knowledgerelax_cb); +/***************************************************************************** + * initpaymentlayer + * + * Initialize a layer in askrene to handle private information regarding this + * payment. + */ + +static struct command_result *createlayer_done(struct command *cmd UNUSED, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *tok UNUSED, + struct payment *payment) +{ + return payment_continue(payment); +} + +static struct command_result *createlayer_fail(struct command *cmd, + const char *method UNUSED, + const char *buf, + const jsmntok_t *tok, + struct payment *payment) +{ + /* failure means layer already exists. + * FIXME: how do we prevent a layer from expiring before the payment + * finishes? */ + const jsmntok_t *messtok = json_get_member(buf, tok, "message"); + plugin_log(cmd->plugin, LOG_UNUSUAL, + "%s: create-layer failed with error: %.*s", __func__, + json_tok_full_len(messtok), json_tok_full(buf, messtok)); + return payment_continue(payment); +} + +static struct command_result *initpaymentlayer_cb(struct payment *payment) +{ + struct command *cmd = payment_command(payment); + assert(cmd); + struct out_req *req = jsonrpc_request_start(cmd, "askrene-create-layer", + createlayer_done, createlayer_fail, payment); + json_add_string(req->js, "layer", payment->payment_layer); + json_add_bool(req->js, "persistent", false); + // FIXME: add automatic expiration? see PR 7963 + // json_add_u64(req->js, "expiration", 24*60*60); // 24 hours + return send_outreq(req); +} + +REGISTER_PAYMENT_MODIFIER(initpaymentlayer, initpaymentlayer_cb); + /***************************************************************************** * channelfilter * @@ -1305,9 +1301,9 @@ REGISTER_PAYMENT_CONDITION(retry, retry_cb); // add check pre-approved invoice void *payment_virtual_program[] = { /*0*/ OP_CALL, &previoussuccess_pay_mod, - /*2*/ OP_CALL, &knowledgerelax_pay_mod, - /*4*/ OP_CALL, &getmychannels_pay_mod, - /*6*/ OP_CALL, &selfpay_pay_mod, + /*2*/ OP_CALL, &initpaymentlayer_pay_mod, + /*4*/ OP_CALL, &knowledgerelax_pay_mod, + /*6*/ OP_CALL, &getmychannels_pay_mod, /*8*/ OP_CALL, &refreshgossmap_pay_mod, /*10*/ OP_CALL, &routehints_pay_mod, /*12*/ OP_CALL, &blindedhints_pay_mod, diff --git a/plugins/renepay/payment.c b/plugins/renepay/payment.c index 02566b01cdff..f33db8317514 100644 --- a/plugins/renepay/payment.c +++ b/plugins/renepay/payment.c @@ -44,6 +44,7 @@ struct payment *payment_new(const tal_t *ctx, const struct sha256 *payment_hash, p->retry = false; p->waitresult_timer = NULL; p->routetracker = new_routetracker(p, p); + p->payment_layer = fmt_sha256(p, &pinfo->payment_hash); return p; } diff --git a/plugins/renepay/payment.h b/plugins/renepay/payment.h index e3d30e301c10..13b1527a9cad 100644 --- a/plugins/renepay/payment.h +++ b/plugins/renepay/payment.h @@ -73,6 +73,9 @@ struct payment { struct plugin_timer *waitresult_timer; struct routetracker *routetracker; + + /* Knowledge layer concerning this payment. */ + const char *payment_layer; }; static inline const struct sha256 payment_hash(const struct payment *p) From 9924a7052cdabd5db638061ae62cc0d4e4f6ea47 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Mon, 10 Feb 2025 09:22:56 +0100 Subject: [PATCH 03/22] renepay: add a global payment layer Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/main.c | 15 +++++++++++++++ plugins/renepay/mods.c | 1 + plugins/renepay/renepayconfig.h | 2 ++ 3 files changed, 18 insertions(+) diff --git a/plugins/renepay/main.c b/plugins/renepay/main.c index 01b4d13be34c..64923b056e7e 100644 --- a/plugins/renepay/main.c +++ b/plugins/renepay/main.c @@ -36,6 +36,15 @@ static void memleak_mark(struct plugin *p, struct htable *memtable) memleak_scan_htable(memtable, &pay_plugin->pending_routes->raw); } +static struct command_result *createlayer_done(struct command *aux_cmd, + const char *method, + const char *buf, + const jsmntok_t *result, + void *unused) +{ + return aux_command_done(aux_cmd); +} + static const char *init(struct command *init_cmd, const char *buf UNUSED, const jsmntok_t *config UNUSED) { @@ -93,6 +102,12 @@ static const char *init(struct command *init_cmd, __func__, skipped_count); plugin_set_memleak_handler(p, memleak_mark); + struct out_req *req = + jsonrpc_request_start(aux_command(init_cmd), "askrene-create-layer", + createlayer_done, plugin_broken_cb, NULL); + json_add_string(req->js, "layer", RENEPAY_LAYER); + json_add_bool(req->js, "persistent", true); + send_outreq(req); return NULL; } diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 7cc4523557ea..30b577bafde4 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -730,6 +730,7 @@ static struct command_result *getroutes_cb(struct payment *payment) json_add_string(req->js, NULL, "auto.localchans"); json_add_string(req->js, NULL, "auto.sourcefree"); json_add_string(req->js, NULL, payment->payment_layer); + json_add_string(req->js, NULL, RENEPAY_LAYER); json_array_end(req->js); // FIXME: add further constraints here if necessary when they become // available in getroutes diff --git a/plugins/renepay/renepayconfig.h b/plugins/renepay/renepayconfig.h index d1ade031618b..968d82198ea7 100644 --- a/plugins/renepay/renepayconfig.h +++ b/plugins/renepay/renepayconfig.h @@ -2,6 +2,8 @@ #define LIGHTNING_PLUGINS_RENEPAY_RENEPAYCONFIG_H #include "config.h" +#define RENEPAY_LAYER "renepay" + #define MAX_NUM_ATTEMPTS 10 /* Knowledge is proportionally decreased with time up to TIMER_FORGET_SEC when From 91942b4a224c0b68d2dd7112f34c0a7971395b2c Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Mon, 10 Feb 2025 11:12:34 +0100 Subject: [PATCH 04/22] renepay: use askrene API for payment failures The execution of the failure notification makes calls to askrene to disable or bias channels that have returned weird errors. Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/routefail.c | 159 ++++++++++++++++++++---------------- 1 file changed, 90 insertions(+), 69 deletions(-) diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 4f450c6a4ace..9a94b6c1c7a5 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -14,13 +14,39 @@ enum node_type { }; struct routefail { - struct command *cmd; struct payment *payment; struct route *route; }; -static struct command_result *update_gossip(struct routefail *r); -static struct command_result *handle_failure(struct routefail *r); +static void update_gossip(struct command *cmd, + struct request_batch *batch, + struct routefail *r); + +static void handle_failure(struct command *cmd, + struct request_batch *batch, + struct routefail *r); + +static struct command_result *routefail_end(struct command *cmd, + struct routefail *r) +{ + /* Notify the tracker that route has failed and routefail have completed + * handling all possible errors cases. */ + route_failure_register(r->payment->routetracker, r->route); + r = tal_free(r); + return notification_handled(cmd); +} + +static struct command_result *log_routefail_err(struct command *cmd, + const char *method, + const char *buf, + const jsmntok_t *tok, + struct routefail *r) +{ + plugin_log(cmd->plugin, LOG_UNUSUAL, + "routefail batch failed: %s failed: '%.*s'", method, + json_tok_full_len(tok), json_tok_full(buf, tok)); + return command_still_pending(cmd); +} struct command_result *routefail_start(const tal_t *ctx, struct route *route, struct command *cmd) @@ -38,20 +64,12 @@ struct command_result *routefail_start(const tal_t *ctx, struct route *route, r->payment = payment; r->route = route; - r->cmd = cmd; - assert(route->result); - return update_gossip(r); -} -static struct command_result *routefail_end(struct routefail *r TAKES) -{ - /* Notify the tracker that route has failed and routefail have completed - * handling all possible errors cases. */ - struct command *cmd = r->cmd; - route_failure_register(r->payment->routetracker, r->route); - if (taken(r)) - r = tal_steal(tmpctx, r); - return notification_handled(cmd); + struct request_batch *batch = + request_batch_new(cmd, NULL, log_routefail_err, routefail_end, r); + update_gossip(cmd, batch, r); + handle_failure(cmd, batch, r); + return batch_done(cmd, batch); } /***************************************************************************** @@ -109,49 +127,9 @@ static u8 *channel_update_from_onion_error(const tal_t *ctx, return patch_channel_update(ctx, take(channel_update)); } -static struct command_result *update_gossip_done(struct command *cmd UNUSED, - const char *method UNUSED, - const char *buf UNUSED, - const jsmntok_t *result UNUSED, - struct routefail *r) -{ - return handle_failure(r); -} - -static struct command_result *update_gossip_failure(struct command *cmd UNUSED, - const char *method UNUSED, - const char *buf, - const jsmntok_t *result, - struct routefail *r) -{ - assert(r); - assert(r->payment); - assert(r->route->result->erring_index); - - const int index = *r->route->result->erring_index; - struct short_channel_id_dir scidd; - - if (r->route->result->erring_channel) { - scidd.scid = *r->route->result->erring_channel; - scidd.dir = *r->route->result->erring_direction; - } else if (r->route->hops) { - assert(index < tal_count(r->route->hops)); - const struct route_hop *hop = &r->route->hops[index]; - scidd.scid = hop->scid; - scidd.dir = hop->direction; - - } else /* don't have information to disable the erring channel */ - goto finish; - - payment_disable_chan( - r->payment, scidd, LOG_INFORM, "addgossip failed (%.*s)", - json_tok_full_len(result), json_tok_full(buf, result)); - -finish: - return update_gossip_done(cmd, method, buf, result, r); -} - -static struct command_result *update_gossip(struct routefail *r) +static void update_gossip(struct command *cmd, + struct request_batch *batch, + struct routefail *r) { /* if there is no raw_message we continue */ if (!r->route->result->raw_message) @@ -163,14 +141,12 @@ static struct command_result *update_gossip(struct routefail *r) if (!update) goto skip_update_gossip; - struct out_req *req = - jsonrpc_request_start(r->cmd, "addgossip", - update_gossip_done, update_gossip_failure, r); + struct out_req *req = add_to_batch(cmd, batch, "addgossip"); json_add_hex_talarr(req->js, "message", update); - return send_outreq(req); + send_outreq(req); skip_update_gossip: - return handle_failure(r); + return; } /***************************************************************************** @@ -198,8 +174,42 @@ static void route_final_error(struct route *route, enum jsonrpc_errcode error, route->final_msg = tal_strdup(route, what); } +static void disable_node(struct command *cmd, struct request_batch *batch, + struct routefail *r, struct node_id *node) +{ + struct out_req *req = add_to_batch(cmd, batch, "askrene-disable-node"); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_node_id(req->js, "node", node); + send_outreq(req); +} + +static void disable_channel(struct command *cmd, struct request_batch *batch, + struct routefail *r, struct short_channel_id_dir scidd) +{ + struct out_req *req = + add_to_batch(cmd, batch, "askrene-udpate-channel"); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_bool(req->js, "enabled", false); + send_outreq(req); +} + +static void bias_channel(struct command *cmd, struct request_batch *batch, + struct routefail *r, struct short_channel_id_dir scidd, + int bias) +{ + // FIXME: we want to increment the bias, not set it + struct out_req *req = add_to_batch(cmd, batch, "askrene-bias-channel"); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_num(req->js, "bias", bias); + send_outreq(req); +} + /* FIXME: do proper error handling for BOLT12 */ -static struct command_result *handle_failure(struct routefail *r) +static void handle_failure(struct command *cmd, + struct request_batch *batch, + struct routefail *r) { /* BOLT #4: * @@ -322,6 +332,9 @@ static struct command_result *handle_failure(struct routefail *r) payment, route->hops[*result->erring_index].node_id, LOG_DBG, "received %s from previous hop", onion_wire_name(failcode)); + disable_node( + cmd, batch, r, + &route->hops[*result->erring_index].node_id); break; case UNKNOWN_NODE: break; @@ -351,6 +364,9 @@ static struct command_result *handle_failure(struct routefail *r) route->hops[*result->erring_index - 1].node_id, LOG_INFORM, "received error %s", onion_wire_name(failcode)); + disable_node( + cmd, batch, r, + &route->hops[*result->erring_index - 1].node_id); break; case UNKNOWN_NODE: break; @@ -399,6 +415,9 @@ static struct command_result *handle_failure(struct routefail *r) route->hops[*result->erring_index - 1].node_id, LOG_INFORM, "received error %s", onion_wire_name(failcode)); + disable_node( + cmd, batch, r, + &route->hops[*result->erring_index - 1].node_id); break; case UNKNOWN_NODE: break; @@ -442,7 +461,7 @@ static struct command_result *handle_failure(struct routefail *r) .dir = route->hops[*result->erring_index].direction}; payment_disable_chan(payment, scidd, LOG_INFORM, "%s", onion_wire_name(failcode)); - + disable_channel(cmd, batch, r, scidd); break; case UNKNOWN_NODE: break; @@ -469,7 +488,9 @@ static struct command_result *handle_failure(struct routefail *r) route->hops[*result->erring_index - 1].node_id, LOG_INFORM, "received error %s", onion_wire_name(failcode)); - + disable_node( + cmd, batch, r, + &route->hops[*result->erring_index - 1].node_id); break; case ORIGIN_NODE: case FINAL_NODE: @@ -518,7 +539,7 @@ static struct command_result *handle_failure(struct routefail *r) payment_warn_chan(payment, scidd, LOG_INFORM, "received error %s", onion_wire_name(failcode)); - + bias_channel(cmd, batch, r, scidd, -1); break; case UNKNOWN_NODE: break; @@ -554,5 +575,5 @@ static struct command_result *handle_failure(struct routefail *r) } finish: - return routefail_end(take(r)); + return; } From 9cd868d49fc02b0009d17e2650b67de6a16ed945 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 19 Feb 2025 11:10:11 +0100 Subject: [PATCH 05/22] renepay: use askrene-age to relax knowledge Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 30b577bafde4..8ee1b9302e8a 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -1122,17 +1122,29 @@ REGISTER_PAYMENT_MODIFIER(pendingsendpays, pendingsendpays_cb); * Reduce the knowledge of the network as time goes by. */ +static struct command_result *age_done(struct command *cmd, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *result UNUSED, + struct payment *payment) +{ + return payment_continue(payment); +} + static struct command_result *knowledgerelax_cb(struct payment *payment) { const u64 now_sec = time_now().ts.tv_sec; - enum renepay_errorcode err = uncertainty_relax( - pay_plugin->uncertainty, now_sec - pay_plugin->last_time); - if (err) - plugin_err(pay_plugin->plugin, - "uncertainty_relax failed with error %s", - renepay_errorcode_name(err)); + // const u64 time_delta = now_sec - pay_plugin->last_time; pay_plugin->last_time = now_sec; - return payment_continue(payment); + /* FIXME: implement a Markovian state relaxation, the time delta is all + * we need to provide. */ + struct command *cmd = payment_command(payment); + assert(cmd); + struct out_req *req = jsonrpc_request_start( + cmd, "askrene-age", age_done, payment_rpc_failure, payment); + json_add_string(req->js, "layer", RENEPAY_LAYER); + json_add_u64(req->js, "cutoff", now_sec - TIMER_FORGET_SEC); + return send_outreq(req); } REGISTER_PAYMENT_MODIFIER(knowledgerelax, knowledgerelax_cb); From b9c824d6f5aec907f22918beb402eb98259a873d Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 19 Feb 2025 11:17:47 +0100 Subject: [PATCH 06/22] renepay: remove unnecessary rpc call Remove unnecessary rpc call to waitblockheight at the default payment's ending. Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 8ee1b9302e8a..dc74b464e7cc 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -882,25 +882,11 @@ REGISTER_PAYMENT_MODIFIER(collect_results, collect_results_cb); * * The default ending of a payment. */ -static struct command_result *end_done(struct command *cmd UNUSED, - const char *method UNUSED, - const char *buf UNUSED, - const jsmntok_t *result UNUSED, - struct payment *payment) +static struct command_result *end_cb(struct payment *payment) { return payment_fail(payment, PAY_STOPPED_RETRYING, "Payment execution ended without success."); } -static struct command_result *end_cb(struct payment *payment) -{ - struct command *cmd = payment_command(payment); - assert(cmd); - struct out_req *req = - jsonrpc_request_start(cmd, "waitblockheight", end_done, - payment_rpc_failure, payment); - json_add_num(req->js, "blockheight", 0); - return send_outreq(req); -} REGISTER_PAYMENT_MODIFIER(end, end_cb); From 8252f5bf6f5c1218c0746ebdba9cfb390c2bb54d Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 19 Feb 2025 11:40:22 +0100 Subject: [PATCH 07/22] renepay: filter channels using askrene API Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index dc74b464e7cc..4a981dee631e 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -1200,16 +1200,19 @@ REGISTER_PAYMENT_MODIFIER(initpaymentlayer, initpaymentlayer_cb); * FIXME: shall we set these threshold parameters as plugin options? */ +static struct command_result *channelfilter_done(struct command *cmd, + struct payment *payment) +{ + return payment_continue(payment); +} + static struct command_result *channelfilter_cb(struct payment *payment) { assert(payment); assert(pay_plugin->gossmap); const double HTLC_MAX_FRACTION = 0.01; // 1% const u64 HTLC_MAX_STOP_MSAT = 1000000000; // 1M sats - u64 disabled_count = 0; - - u64 htlc_max_threshold = HTLC_MAX_FRACTION * payment->payment_info .amount.millisatoshis; /* Raw: a fraction of this amount. */ /* Don't exclude channels with htlc_max above HTLC_MAX_STOP_MSAT even if @@ -1217,7 +1220,11 @@ static struct command_result *channelfilter_cb(struct payment *payment) * HTLC_MAX_FRACTION. */ htlc_max_threshold = MIN(htlc_max_threshold, HTLC_MAX_STOP_MSAT); - gossmap_apply_localmods(pay_plugin->gossmap, payment->local_gossmods); + struct command *cmd = payment_command(payment); + struct request_batch *batch = request_batch_new( + cmd, NULL, log_payment_err, channelfilter_done, payment); + struct out_req *req; + for (const struct gossmap_node *node = gossmap_first_node(pay_plugin->gossmap); node; node = gossmap_next_node(pay_plugin->gossmap, node)) { @@ -1232,19 +1239,24 @@ static struct command_result *channelfilter_cb(struct payment *payment) .scid = gossmap_chan_scid( pay_plugin->gossmap, chan), .dir = dir}; - disabledmap_add_channel(payment->disabledmap, - scidd); + req = add_to_batch(cmd, batch, + "askrene-update-channel"); + json_add_string(req->js, "layer", + payment->payment_layer); + json_add_short_channel_id_dir( + req->js, "short_channel_id_dir", scidd); + json_add_bool(req->js, "enabled", false); + send_outreq(req); disabled_count++; } } } - gossmap_remove_localmods(pay_plugin->gossmap, payment->local_gossmods); // FIXME: prune the network over other parameters, eg. capacity, // fees, ... plugin_log(pay_plugin->plugin, LOG_DBG, "channelfilter: disabling %" PRIu64 " channels.", disabled_count); - return payment_continue(payment); + return batch_done(cmd, batch); } REGISTER_PAYMENT_MODIFIER(channelfilter, channelfilter_cb); From e7ad61c9760189ffbbc76b5236d1c23cb1cb8264 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 19 Feb 2025 12:24:25 +0100 Subject: [PATCH 08/22] renepay: timer to remove payment layer after 1h Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 4a981dee631e..5c13205de080 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include #include @@ -1167,6 +1168,38 @@ static struct command_result *createlayer_fail(struct command *cmd, return payment_continue(payment); } +static struct command_result *remove_layer_done(struct command *cmd, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *tok UNUSED, + struct payment *payment UNUSED) +{ + return timer_complete(cmd); +} +static struct command_result *remove_layer_fail(struct command *cmd, + const char *method, + const char *buf, + const jsmntok_t *tok, + struct payment *payment) +{ + plugin_log(cmd->plugin, LOG_UNUSUAL, "%s failed: '%.*s'", method, + json_tok_full_len(tok), json_tok_full(buf, tok)); + return remove_layer_done(cmd, method, buf, tok, payment); +} + +static struct command_result *remove_payment_layer(struct command *cmd, + struct payment *payment) +{ + + struct out_req *req = jsonrpc_request_start(cmd, "askrene-remove-layer", + remove_layer_done, + remove_layer_fail, payment); + json_add_string(req->js, "layer", payment->payment_layer); + plugin_log(cmd->plugin, LOG_DBG, "removing payment layer: %s", + payment->payment_layer); + return send_outreq(req); +} + static struct command_result *initpaymentlayer_cb(struct payment *payment) { struct command *cmd = payment_command(payment); @@ -1175,8 +1208,12 @@ static struct command_result *initpaymentlayer_cb(struct payment *payment) createlayer_done, createlayer_fail, payment); json_add_string(req->js, "layer", payment->payment_layer); json_add_bool(req->js, "persistent", false); - // FIXME: add automatic expiration? see PR 7963 - // json_add_u64(req->js, "expiration", 24*60*60); // 24 hours + /* Remove this payment layer after one hour. If the plugin crashes + * unexpectedly, we might "leak" by forgetting to remove the layer, but + * the layer is not persistent anyways, therefore restarting CLN will + * remove it. */ + notleak(global_timer(cmd->plugin, time_from_sec(3600), + remove_payment_layer, payment)); return send_outreq(req); } From 1a3bc0649711c86829a49a556979622a146a7e1a Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Thu, 20 Feb 2025 10:06:30 +0100 Subject: [PATCH 09/22] renepay: remove MCF Remove the MCF solver from renepay. Offload the route computation on askrene. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/Makefile | 14 - plugins/renepay/chan_extra.c | 677 --------- plugins/renepay/chan_extra.h | 210 --- plugins/renepay/dijkstra.c | 186 --- plugins/renepay/dijkstra.h | 30 - plugins/renepay/disabledmap.c | 125 -- plugins/renepay/disabledmap.h | 64 - plugins/renepay/flow.c | 489 ------- plugins/renepay/flow.h | 95 -- plugins/renepay/main.c | 10 - plugins/renepay/mcf.c | 1860 ------------------------ plugins/renepay/mcf.h | 67 - plugins/renepay/mods.c | 197 +-- plugins/renepay/payment.c | 33 +- plugins/renepay/payment.h | 4 - plugins/renepay/payplugin.h | 5 - plugins/renepay/route.c | 81 -- plugins/renepay/route.h | 12 - plugins/renepay/routebuilder.c | 433 ------ plugins/renepay/routebuilder.h | 31 - plugins/renepay/routefail.c | 2 +- plugins/renepay/routetracker.c | 60 +- plugins/renepay/routetracker.h | 5 +- plugins/renepay/test/Makefile | 3 - plugins/renepay/test/run-arc.c | 86 -- plugins/renepay/test/run-bottleneck.c | 278 ---- plugins/renepay/test/run-dijkstra.c | 100 -- plugins/renepay/test/run-mcf-diamond.c | 211 --- plugins/renepay/test/run-mcf.c | 609 -------- plugins/renepay/test/run-route_map.c | 1 - plugins/renepay/test/run-testflow.c | 842 ----------- plugins/renepay/uncertainty.c | 198 --- plugins/renepay/uncertainty.h | 69 - 33 files changed, 27 insertions(+), 7060 deletions(-) delete mode 100644 plugins/renepay/chan_extra.c delete mode 100644 plugins/renepay/chan_extra.h delete mode 100644 plugins/renepay/dijkstra.c delete mode 100644 plugins/renepay/dijkstra.h delete mode 100644 plugins/renepay/disabledmap.c delete mode 100644 plugins/renepay/disabledmap.h delete mode 100644 plugins/renepay/flow.c delete mode 100644 plugins/renepay/flow.h delete mode 100644 plugins/renepay/mcf.c delete mode 100644 plugins/renepay/mcf.h delete mode 100644 plugins/renepay/routebuilder.c delete mode 100644 plugins/renepay/routebuilder.h delete mode 100644 plugins/renepay/test/run-arc.c delete mode 100644 plugins/renepay/test/run-bottleneck.c delete mode 100644 plugins/renepay/test/run-dijkstra.c delete mode 100644 plugins/renepay/test/run-mcf-diamond.c delete mode 100644 plugins/renepay/test/run-mcf.c delete mode 100644 plugins/renepay/test/run-testflow.c delete mode 100644 plugins/renepay/uncertainty.c delete mode 100644 plugins/renepay/uncertainty.h diff --git a/plugins/renepay/Makefile b/plugins/renepay/Makefile index 5300fecb0f04..aac733e5b530 100644 --- a/plugins/renepay/Makefile +++ b/plugins/renepay/Makefile @@ -1,37 +1,23 @@ PLUGIN_RENEPAY_SRC := \ plugins/renepay/main.c \ - plugins/renepay/flow.c \ - plugins/renepay/mcf.c \ - plugins/renepay/dijkstra.c \ - plugins/renepay/disabledmap.c \ plugins/renepay/payment.c \ - plugins/renepay/chan_extra.c \ plugins/renepay/route.c \ - plugins/renepay/routebuilder.c \ plugins/renepay/routetracker.c \ plugins/renepay/routefail.c \ plugins/renepay/sendpay.c \ - plugins/renepay/uncertainty.c \ plugins/renepay/mods.c \ plugins/renepay/errorcodes.c \ plugins/renepay/json.c PLUGIN_RENEPAY_HDRS := \ plugins/renepay/payplugin.h \ - plugins/renepay/flow.h \ - plugins/renepay/mcf.h \ - plugins/renepay/dijkstra.h \ - plugins/renepay/disabledmap.h \ plugins/renepay/payment.h \ plugins/renepay/payment_info.h \ - plugins/renepay/chan_extra.h \ plugins/renepay/renepayconfig.h \ plugins/renepay/route.h \ - plugins/renepay/routebuilder.h \ plugins/renepay/routetracker.h \ plugins/renepay/routefail.h \ plugins/renepay/sendpay.h \ - plugins/renepay/uncertainty.h \ plugins/renepay/mods.h \ plugins/renepay/errorcodes.h \ plugins/renepay/json.c diff --git a/plugins/renepay/chan_extra.c b/plugins/renepay/chan_extra.c deleted file mode 100644 index 931463ca53d2..000000000000 --- a/plugins/renepay/chan_extra.c +++ /dev/null @@ -1,677 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include - -bool chan_extra_is_busy(const struct chan_extra *const ce) -{ - if (ce == NULL) - return false; - return ce->half[0].num_htlcs || ce->half[1].num_htlcs; -} - -const char *fmt_chan_extra_map(const tal_t *ctx, - struct chan_extra_map *chan_extra_map) -{ - tal_t *this_ctx = tal(ctx, tal_t); - char *buff = tal_fmt(ctx, "Uncertainty network:\n"); - struct chan_extra_map_iter it; - for (struct chan_extra *ch = chan_extra_map_first(chan_extra_map, &it); - ch; ch = chan_extra_map_next(chan_extra_map, &it)) { - const char *scid_str = fmt_short_channel_id(this_ctx, ch->scid); - for (int dir = 0; dir < 2; ++dir) { - tal_append_fmt( - &buff, "%s[%d]:(%s,%s) htlc: %s\n", scid_str, dir, - fmt_amount_msat(this_ctx, ch->half[dir].known_min), - fmt_amount_msat(this_ctx, ch->half[dir].known_max), - fmt_amount_msat(this_ctx, ch->half[dir].htlc_total)); - } - } - tal_free(this_ctx); - return buff; -} - -const char *fmt_chan_extra_details(const tal_t *ctx, - const struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd) -{ - const tal_t *this_ctx = tal(ctx, tal_t); - const struct chan_extra *ce = - chan_extra_map_get(chan_extra_map, scidd->scid); - const struct chan_extra_half *ch; - char *str = tal_strdup(ctx, ""); - char sep = '('; - - if (!ce) { - // we have no information on this channel - tal_append_fmt(&str, "()"); - goto finished; - } - - ch = &ce->half[scidd->dir]; - if (ch->num_htlcs != 0) { - tal_append_fmt(&str, "%c%s in %zu htlcs", sep, - fmt_amount_msat(this_ctx, ch->htlc_total), - ch->num_htlcs); - sep = ','; - } - /* Happens with local channels, where we're certain. */ - if (amount_msat_eq(ch->known_min, ch->known_max)) { - tal_append_fmt(&str, "%cmin=max=%s", sep, - fmt_amount_msat(this_ctx, ch->known_min)); - sep = ','; - } else { - if (amount_msat_greater(ch->known_min, AMOUNT_MSAT(0))) { - tal_append_fmt( - &str, "%cmin=%s", sep, - fmt_amount_msat(this_ctx, ch->known_min)); - sep = ','; - } - if (!amount_msat_eq(ch->known_max, ce->capacity)) { - tal_append_fmt( - &str, "%cmax=%s", sep, - fmt_amount_msat(this_ctx, ch->known_max)); - sep = ','; - } - } - if (!streq(str, "")) - tal_append_fmt(&str, ")"); - -finished: - tal_free(this_ctx); - return str; -} - -struct chan_extra *new_chan_extra(struct chan_extra_map *chan_extra_map, - const struct short_channel_id scid, - struct amount_msat capacity) -{ - assert(chan_extra_map); - struct chan_extra *ce = tal(chan_extra_map, struct chan_extra); - if (!ce) - return ce; - - ce->scid = scid; - ce->capacity = capacity; - for (size_t i = 0; i <= 1; i++) { - ce->half[i].num_htlcs = 0; - ce->half[i].htlc_total = AMOUNT_MSAT(0); - ce->half[i].known_min = AMOUNT_MSAT(0); - ce->half[i].known_max = capacity; - } - if (!chan_extra_map_add(chan_extra_map, ce)) { - return tal_free(ce); - } - - /* Remove self from map when done */ - // TODO(eduardo): - // Is this desctructor really necessary? the chan_extra will deallocated - // when the chan_extra_map is freed. Anyways valgrind complains that the - // hash table is removing the element with a freed pointer. - // tal_add_destructor2(ce, destroy_chan_extra, chan_extra_map); - return ce; -} - -/* Based on the knowledge that we have and HTLCs, returns the greatest - * amount that we can send through this channel. */ -enum renepay_errorcode channel_liquidity(struct amount_msat *liquidity, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, - const int dir) -{ - const struct chan_extra_half *h = - get_chan_extra_half_by_chan(gossmap, chan_extra_map, chan, dir); - if (!h) - return RENEPAY_CHANNEL_NOT_FOUND; - struct amount_msat value_liquidity = h->known_max; - if (!amount_msat_sub(&value_liquidity, value_liquidity, h->htlc_total)) - return RENEPAY_AMOUNT_OVERFLOW; - *liquidity = value_liquidity; - return RENEPAY_NOERROR; -} - -/* Checks BOLT 7 HTLC fee condition: - * recv >= base_fee + (send*proportional_fee)/1000000 */ -bool check_fee_inequality(struct amount_msat recv, struct amount_msat send, - u64 base_fee, u64 proportional_fee) -{ - // nothing to forward, any incoming amount is good - if (amount_msat_is_zero(send)) - return true; - // FIXME If this addition fails we return false. The caller will not be - // able to know that there was an addition overflow, he will just assume - // that the fee inequality was not satisfied. - if (!amount_msat_add_fee(&send, base_fee, proportional_fee)) - return false; - return amount_msat_greater_eq(recv, send); -} - -/* Let `recv` be the maximum amount this channel can receive, this function - * computes the maximum amount this channel can forward `send`. - * From BOLT7 specification wee need to satisfy the following inequality: - * - * recv-send >= base_fee + floor(send*proportional_fee/1000000) - * - * That is equivalent to have - * - * send <= Bound(recv,send) - * - * where - * - * Bound(recv, send) = ((recv - base_fee)*1000000 + (send*proportional_fee) - *% 1000000)/(proportional_fee+1000000) - * - * However the quantity we want to determine, `send`, appears on both sides of - * the equation. However the term `send*proportional_fee) % 1000000` only - * contributes by increasing the bound by at most one so that we can neglect - * the extra term and use instead - * - * Bound_simple(recv) = ((recv - - *base_fee)*1000000)/(proportional_fee+1000000) - * - * as the upper bound for `send`. Formally one can check that - * - * Bound_simple(recv) <= Bound(recv, send) < Bound_simple(recv) + 2 - * - * So that if one wishes to find the very highest value of `send` that - * satisfies - * - * send <= Bound(recv, send) - * - * it is enough to compute - * - * send = Bound_simple(recv) - * - * which already satisfies the fee equation and then try to go higher - * with send+1, send+2, etc. But we know that it is enough to try up to - * send+1 because Bound(recv, send) < Bound_simple(recv) + 2. - * */ -enum renepay_errorcode channel_maximum_forward(struct amount_msat *max_forward, - const struct gossmap_chan *chan, - const int dir, - struct amount_msat recv) -{ - const u64 b = chan->half[dir].base_fee, - p = chan->half[dir].proportional_fee; - - const u64 one_million = 1000000; - u64 x_msat = - recv.millisatoshis; /* Raw: need to invert the fee equation */ - - // special case, when recv - base_fee <= 0, we cannot forward anything - if (x_msat <= b) { - *max_forward = amount_msat(0); - return RENEPAY_NOERROR; - } - - x_msat -= b; - - if (mul_overflows_u64(one_million, x_msat)) - return RENEPAY_AMOUNT_OVERFLOW; - - struct amount_msat best_send = - AMOUNT_MSAT_INIT((one_million * x_msat) / (one_million + p)); - - /* Try to increase the value we send (up tp the last millisat) until we - * fail to fulfill the fee inequality. It takes only one iteration - * though. */ - for (size_t i = 0; i < 10; ++i) { - struct amount_msat next_send; - if (!amount_msat_add(&next_send, best_send, amount_msat(1))) - return RENEPAY_AMOUNT_OVERFLOW; - - if (check_fee_inequality(recv, next_send, b, p)) - best_send = next_send; - else - break; - } - *max_forward = best_send; - return RENEPAY_NOERROR; -} - -/* This helper function preserves the uncertainty network invariant after the - * knowledge is updated. It assumes that the (channel,!dir) knowledge is - * correct. */ -static enum renepay_errorcode chan_extra_adjust_half(struct chan_extra *ce, - int dir) -{ - assert(ce); - assert(dir == 0 || dir == 1); - - struct amount_msat new_known_max, new_known_min; - - if (!amount_msat_sub(&new_known_max, ce->capacity, - ce->half[!dir].known_min) || - !amount_msat_sub(&new_known_min, ce->capacity, - ce->half[!dir].known_max)) - return RENEPAY_AMOUNT_OVERFLOW; - - ce->half[dir].known_max = new_known_max; - ce->half[dir].known_min = new_known_min; - return RENEPAY_NOERROR; -} - -/* Update the knowledge that this (channel,direction) can send x msat.*/ -static enum renepay_errorcode -chan_extra_can_send_(struct chan_extra *ce, int dir, struct amount_msat x) -{ - assert(ce); - assert(dir == 0 || dir == 1); - enum renepay_errorcode err; - - if (amount_msat_greater(x, ce->capacity)) - return RENEPAY_PRECONDITION_ERROR; - - struct amount_msat known_min, known_max; - - // in case we fail, let's remember the original state - known_min = ce->half[dir].known_min; - known_max = ce->half[dir].known_max; - - ce->half[dir].known_min = amount_msat_max(ce->half[dir].known_min, x); - ce->half[dir].known_max = amount_msat_max(ce->half[dir].known_max, x); - - err = chan_extra_adjust_half(ce, !dir); - if (err != RENEPAY_NOERROR) - goto restore_and_fail; - - return RENEPAY_NOERROR; - -restore_and_fail: - // we fail, thus restore the original state - ce->half[dir].known_min = known_min; - ce->half[dir].known_max = known_max; - return err; -} - -enum renepay_errorcode -chan_extra_can_send(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd) -{ - assert(scidd); - assert(chan_extra_map); - struct chan_extra *ce = chan_extra_map_get(chan_extra_map, scidd->scid); - if (!ce) - return RENEPAY_CHANNEL_NOT_FOUND; - return chan_extra_can_send_(ce, scidd->dir, - ce->half[scidd->dir].htlc_total); -} - -/* Update the knowledge that this (channel,direction) cannot send.*/ -enum renepay_errorcode -chan_extra_cannot_send(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd) -{ - assert(scidd); - assert(chan_extra_map); - struct amount_msat x; - enum renepay_errorcode err; - struct chan_extra *ce = chan_extra_map_get(chan_extra_map, scidd->scid); - if (!ce) - return RENEPAY_CHANNEL_NOT_FOUND; - - /* Note: sent is already included in htlc_total! */ - if (!amount_msat_sub(&x, ce->half[scidd->dir].htlc_total, - AMOUNT_MSAT(1))) - return RENEPAY_AMOUNT_OVERFLOW; - - struct amount_msat known_min, known_max; - // in case we fail, let's remember the original state - known_min = ce->half[scidd->dir].known_min; - known_max = ce->half[scidd->dir].known_max; - - /* If we "knew" the capacity was at least this, we just showed we're - * wrong! */ - if (amount_msat_less(x, ce->half[scidd->dir].known_min)) { - /* Skip to half of x, since we don't know (rounds down) */ - ce->half[scidd->dir].known_min = amount_msat_div(x, 2); - } - - ce->half[scidd->dir].known_max = - amount_msat_min(ce->half[scidd->dir].known_max, x); - - err = chan_extra_adjust_half(ce, !scidd->dir); - if (err != RENEPAY_NOERROR) - goto restore_and_fail; - return err; - -restore_and_fail: - // we fail, thus restore the original state - ce->half[scidd->dir].known_min = known_min; - ce->half[scidd->dir].known_max = known_max; - return err; -} - -/* Update the knowledge that this (channel,direction) has liquidity x.*/ -// FIXME for being this low level API, I thinkg it's too much to have verbose -// error messages -static enum renepay_errorcode chan_extra_set_liquidity_(struct chan_extra *ce, - int dir, - struct amount_msat min, - struct amount_msat max) -{ - assert(ce); - assert(dir == 0 || dir == 1); - enum renepay_errorcode err; - - if (amount_msat_greater(max, ce->capacity) || - amount_msat_greater(min, max)) - return RENEPAY_PRECONDITION_ERROR; - - // in case we fail, let's remember the original state - struct amount_msat known_min, known_max; - known_min = ce->half[dir].known_min; - known_max = ce->half[dir].known_max; - - ce->half[dir].known_min = min; - ce->half[dir].known_max = max; - - err = chan_extra_adjust_half(ce, !dir); - if (err != RENEPAY_NOERROR) - goto restore_and_fail; - return err; - -restore_and_fail: - // we fail, thus restore the original state - ce->half[dir].known_min = known_min; - ce->half[dir].known_max = known_max; - return err; -} - -enum renepay_errorcode -chan_extra_set_liquidity(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat min, - struct amount_msat max) -{ - assert(scidd); - assert(chan_extra_map); - struct chan_extra *ce = chan_extra_map_get(chan_extra_map, scidd->scid); - if (!ce) - return RENEPAY_CHANNEL_NOT_FOUND; - - return chan_extra_set_liquidity_(ce, scidd->dir, min, max); -} - -/* Update the knowledge that this (channel,direction) has sent x msat.*/ -enum renepay_errorcode -chan_extra_sent_success(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat x) -{ - assert(scidd); - assert(chan_extra_map); - - struct chan_extra *ce = chan_extra_map_get(chan_extra_map, scidd->scid); - if (!ce) - return RENEPAY_CHANNEL_NOT_FOUND; - - // if we sent amount x, it first means that all htlcs on this channel - // fit in the liquidity - enum renepay_errorcode err; - err = chan_extra_can_send(chan_extra_map, scidd); - if (err != RENEPAY_NOERROR) - return err; - - if (amount_msat_greater(x, ce->capacity)) - return RENEPAY_PRECONDITION_ERROR; - - // in case we fail, let's remember the original state - struct amount_msat known_min, known_max; - known_min = ce->half[scidd->dir].known_min; - known_max = ce->half[scidd->dir].known_max; - - struct amount_msat new_a, new_b; - - if (!amount_msat_sub(&new_a, ce->half[scidd->dir].known_min, x)) - new_a = AMOUNT_MSAT(0); - if (!amount_msat_sub(&new_b, ce->half[scidd->dir].known_max, x)) - new_b = AMOUNT_MSAT(0); - - ce->half[scidd->dir].known_min = new_a; - ce->half[scidd->dir].known_max = new_b; - - err = chan_extra_adjust_half(ce, !scidd->dir); - if (err != RENEPAY_NOERROR) - goto restore_and_fail; - - return err; - -// we fail, thus restore the original state -restore_and_fail: - ce->half[scidd->dir].known_min = known_min; - ce->half[scidd->dir].known_max = known_max; - return err; -} - -/* Forget a bit about this (channel,direction) state. */ -static enum renepay_errorcode chan_extra_relax(struct chan_extra *ce, int dir, - struct amount_msat down, - struct amount_msat up) -{ - assert(ce); - assert(dir == 0 || dir == 1); - struct amount_msat new_a, new_b; - enum renepay_errorcode err; - - if (!amount_msat_sub(&new_a, ce->half[dir].known_min, down)) - new_a = AMOUNT_MSAT(0); - if (!amount_msat_add(&new_b, ce->half[dir].known_max, up)) - new_b = ce->capacity; - new_b = amount_msat_min(new_b, ce->capacity); - - // in case we fail, let's remember the original state - struct amount_msat known_min, known_max; - known_min = ce->half[dir].known_min; - known_max = ce->half[dir].known_max; - - ce->half[dir].known_min = new_a; - ce->half[dir].known_max = new_b; - - err = chan_extra_adjust_half(ce, !dir); - if (err != RENEPAY_NOERROR) - goto restore_and_fail; - return err; - -// we fail, thus restore the original state -restore_and_fail: - ce->half[dir].known_min = known_min; - ce->half[dir].known_max = known_max; - return err; -} - -/* Forget the channel information by a fraction of the capacity. */ -enum renepay_errorcode chan_extra_relax_fraction(struct chan_extra *ce, - double fraction) -{ - assert(ce); - assert(fraction >= 0); - /* Allow to have values greater than 1 to indicate full relax. */ - // assert(fraction<=1); - fraction = fabs(fraction); // this number is always non-negative - fraction = MIN(1.0, fraction); // this number cannot be greater than 1. - struct amount_msat delta = - amount_msat(ce->capacity.millisatoshis*fraction); /* Raw: get a fraction of the capacity */ - - /* The direction here is not important because the 'down' and the 'up' - * limits are changed by the same amount. - * Notice that if chan[0] with capacity C changes from (a,b) to - * (a-d,b+d) then its counterpart chan[1] changes from (C-b,C-a) to - * (C-b-d,C-a+d), hence both dirs are applied the same transformation. - */ - return chan_extra_relax(ce, /*dir=*/0, delta, delta); -} - -/* Returns either NULL, or an entry from the hash */ -struct chan_extra_half * -get_chan_extra_half_by_scid(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd) -{ - assert(scidd); - assert(chan_extra_map); - struct chan_extra *ce; - - ce = chan_extra_map_get(chan_extra_map, scidd->scid); - if (!ce) - return NULL; - return &ce->half[scidd->dir]; -} -/* Helper if we have a gossmap_chan */ -struct chan_extra_half * -get_chan_extra_half_by_chan(const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, int dir) -{ - assert(chan); - assert(dir == 0 || dir == 1); - assert(gossmap); - assert(chan_extra_map); - struct short_channel_id_dir scidd; - - scidd.scid = gossmap_chan_scid(gossmap, chan); - scidd.dir = dir; - return get_chan_extra_half_by_scid(chan_extra_map, &scidd); -} - -// static void destroy_chan_extra(struct chan_extra *ce, -// struct chan_extra_map *chan_extra_map) -// { -// chan_extra_map_del(chan_extra_map, ce); -// } -/* Helper to get the chan_extra_half. If it doesn't exist create a new one. */ -struct chan_extra_half * -get_chan_extra_half_by_chan_verify(const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, int dir) -{ - assert(chan); - assert(dir == 0 || dir == 1); - assert(gossmap); - assert(chan_extra_map); - struct short_channel_id_dir scidd; - - scidd.scid = gossmap_chan_scid(gossmap, chan); - scidd.dir = dir; - struct chan_extra_half *h = - get_chan_extra_half_by_scid(chan_extra_map, &scidd); - if (!h) { - struct amount_msat cap_msat - = gossmap_chan_get_capacity(gossmap, chan); - h = &new_chan_extra(chan_extra_map, scidd.scid, cap_msat) - ->half[scidd.dir]; - } - return h; -} - -/* Assuming a uniform distribution, what is the chance this f gets through? - * Here we compute the conditional probability of success for a flow f, given - * the knowledge that the liquidity is in the range [a,b) and some amount - * x is already committed on another part of the payment. - * - * The probability equation for x=0 is: - * - * prob(f) = - * - * for f=f>=a: (b-f)/(b-a) - * for b0 the prob. of success for passing x and f is: - * - * prob(f and x) = prob(x) * prob(f|x) - * - * and it can be shown to be equal to - * - * prob(f and x) = prob(f+x) - * - * The purpose of this function is to obtain prob(f|x), i.e. the probability of - * getting f through provided that we already succeeded in getting x. - * This conditional probability comes with 4 cases: - * - * prob(f|x) = - * - * for x=a-x: (b-x-f)/(b-a) - * for x>=a: (b-x-f)/(b-x) - * for f>b-x: 0. - * - * This is the same as the probability of success of f when the bounds are - * shifted by x amount, the new bounds be [MAX(0,a-x),b-x). - */ -double edge_probability(struct amount_msat min, struct amount_msat max, - struct amount_msat in_flight, struct amount_msat f) -{ - assert(amount_msat_less_eq(min, max)); - assert(amount_msat_less_eq(in_flight, max)); - - const struct amount_msat one = AMOUNT_MSAT(1); - struct amount_msat B = max; // = max +1 - in_flight - - // one past the last known value, makes computations simpler - if (!amount_msat_accumulate(&B, one)) - goto function_fail; - - // in_flight cannot be greater than max - if (!amount_msat_sub(&B, B, in_flight)) - goto function_fail; - - struct amount_msat A = min; // = MAX(0,min-in_flight); - - if (!amount_msat_sub(&A, A, in_flight)) - A = AMOUNT_MSAT(0); - - struct amount_msat denominator; // = B-A - - // B cannot be smaller than or equal A - if (!amount_msat_sub(&denominator, B, A) || amount_msat_less_eq(B, A)) - goto function_fail; - - struct amount_msat numerator; // MAX(0,B-f) - - if (!amount_msat_sub(&numerator, B, f)) - numerator = AMOUNT_MSAT(0); - - return amount_msat_less_eq(f, A) - ? 1.0 - : amount_msat_ratio(numerator, denominator); - -function_fail: - return -1; -} - -enum renepay_errorcode -chan_extra_remove_htlc(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat amount) -{ - struct chan_extra_half *h = - get_chan_extra_half_by_scid(chan_extra_map, scidd); - if (!h) - return RENEPAY_CHANNEL_NOT_FOUND; - if (h->num_htlcs <= 0) - return RENEPAY_PRECONDITION_ERROR; - - if (!amount_msat_sub(&h->htlc_total, h->htlc_total, amount)) - return RENEPAY_AMOUNT_OVERFLOW; - h->num_htlcs--; - return RENEPAY_NOERROR; -} - -enum renepay_errorcode -chan_extra_commit_htlc(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat amount) -{ - struct chan_extra_half *h = - get_chan_extra_half_by_scid(chan_extra_map, scidd); - if (!h) - return RENEPAY_CHANNEL_NOT_FOUND; - if (!amount_msat_accumulate(&h->htlc_total, amount)) - return RENEPAY_AMOUNT_OVERFLOW; - h->num_htlcs++; - return RENEPAY_NOERROR; -} diff --git a/plugins/renepay/chan_extra.h b/plugins/renepay/chan_extra.h deleted file mode 100644 index d7213ad52cad..000000000000 --- a/plugins/renepay/chan_extra.h +++ /dev/null @@ -1,210 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_CHAN_EXTRA_H -#define LIGHTNING_PLUGINS_RENEPAY_CHAN_EXTRA_H - -#include "config.h" -#include -#include -#include -#include -#include - -#define MAX(x, y) (((x) > (y)) ? (x) : (y)) -#define MIN(x, y) (((x) < (y)) ? (x) : (y)) - -/* Any implementation needs to keep some data on channels which are - * in-use (or about which we have extra information). We use a hash - * table here, since most channels are not in use. */ -// TODO(eduardo): if we know the liquidity of channel (X,dir) is [A,B] -// then we also know that the liquidity of channel (X,!dir) is [Cap-B,Cap-A]. -// This means that it is redundant to store known_min and known_max for both -// halves of the channel and it also means that once we update the knowledge of -// (X,dir) the knowledge of (X,!dir) is updated as well. -struct chan_extra { - struct short_channel_id scid; - struct amount_msat capacity; - - struct chan_extra_half { - /* How many htlcs we've directed through it */ - size_t num_htlcs; - - /* The total size of those HTLCs */ - struct amount_msat htlc_total; - - /* The known minimum / maximum capacity (if nothing known, - * 0/capacity */ - struct amount_msat known_min, known_max; - } half[2]; -}; - -bool chan_extra_is_busy(const struct chan_extra *const ce); - -static inline const struct short_channel_id -chan_extra_scid(const struct chan_extra *cd) -{ - return cd->scid; -} - -static inline bool chan_extra_eq_scid(const struct chan_extra *cd, - const struct short_channel_id scid) -{ - return short_channel_id_eq(scid, cd->scid); -} - -HTABLE_DEFINE_NODUPS_TYPE(struct chan_extra, chan_extra_scid, short_channel_id_hash, - chan_extra_eq_scid, - chan_extra_map); - -/* Helpers for chan_extra_map */ -/* Channel knowledge invariants: - * - * 0<=a<=b<=capacity - * - * a_inv = capacity-b - * b_inv = capacity-a - * - * where a,b are the known minimum and maximum liquidities, and a_inv and b_inv - * are the known minimum and maximum liquidities for the channel in the opposite - * direction. - * - * Knowledge update operations can be: - * - * 1. set liquidity (x) - * (a,b) -> (x,x) - * - * The entropy is minimum here (=0). - * - * 2. can send (x): - * xb = min(x,capacity) - * (a,b) -> (max(a,xb),max(b,xb)) - * - * If x<=a then there is no new knowledge and the entropy remains - * the same. - * If x>a the entropy decreases. - * - * - * 3. can't send (x): - * xb = max(0,x-1) - * (a,b) -> (min(a,xb),min(b,xb)) - * - * If x>b there is no new knowledge and the entropy remains. - * If x<=b then the entropy decreases. - * - * 4. sent success (x): - * (a,b) -> (max(0,a-x),max(0,b-x)) - * - * If x<=a there is no new knowledge and the entropy remains. - * If a (max(0,a-x),min(capacity,b+y)) - * - * Entropy increases unless it is already maximum. - * */ - -const char *fmt_chan_extra_map(const tal_t *ctx, - struct chan_extra_map *chan_extra_map); - -/* Returns "" if nothing useful known about channel, otherwise - * "(details)" */ -const char *fmt_chan_extra_details(const tal_t *ctx, - const struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd); - -/* Creates a new chan_extra and adds it to the chan_extra_map. */ -struct chan_extra *new_chan_extra(struct chan_extra_map *chan_extra_map, - const struct short_channel_id scid, - struct amount_msat capacity); - -/* Update the knowledge that this (channel,direction) can send x msat.*/ -enum renepay_errorcode -chan_extra_can_send(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd); - -/* Update the knowledge that this (channel,direction) cannot send x msat.*/ -enum renepay_errorcode -chan_extra_cannot_send(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd); - -enum renepay_errorcode -chan_extra_remove_htlc(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat amount); - -enum renepay_errorcode -chan_extra_commit_htlc(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat amount); - - -/* Update the knowledge that this (channel,direction) has liquidity x.*/ -enum renepay_errorcode -chan_extra_set_liquidity(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat min, - struct amount_msat max); - -/* Update the knowledge that this (channel,direction) has sent x msat.*/ -enum renepay_errorcode -chan_extra_sent_success(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd, - struct amount_msat x); - -/* Forget the channel information by a fraction of the capacity. */ -enum renepay_errorcode chan_extra_relax_fraction(struct chan_extra *ce, - double fraction); - -/* Returns either NULL, or an entry from the hash */ -struct chan_extra_half * -get_chan_extra_half_by_scid(struct chan_extra_map *chan_extra_map, - const struct short_channel_id_dir *scidd); -/* If the channel is not registered, then a new entry is created. scid must be - * present in the gossmap. */ -struct chan_extra_half * -get_chan_extra_half_by_chan_verify(const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, int dir); - -/* Helper if we have a gossmap_chan */ -struct chan_extra_half * -get_chan_extra_half_by_chan(const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, int dir); - -/* Based on the knowledge that we have and HTLCs, returns the greatest - * amount that we can send through this channel. */ -enum renepay_errorcode channel_liquidity(struct amount_msat *liquidity, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan *chan, - const int dir); - -/* inputs - * @chan: a channel - * @recv: how much can we send to this channels - * - * output - * @max_forward: how much can we ask this channel to forward to the next hop - * */ -enum renepay_errorcode channel_maximum_forward(struct amount_msat *max_forward, - const struct gossmap_chan *chan, - const int dir, - struct amount_msat recv); - -/* Assume a uniform distribution: - * @min, @max: the bounds of liquidity - * @in_flight: htlcs - * - * @f: the amount we want to forward - * - * returns the probability that this forward request gets through. - * */ -double edge_probability(struct amount_msat min, struct amount_msat max, - struct amount_msat in_flight, struct amount_msat f); - -/* Checks BOLT 7 HTLC fee condition: - * recv >= base_fee + (send*proportional_fee)/1000000 */ -bool check_fee_inequality(struct amount_msat recv, struct amount_msat send, - u64 base_fee, u64 proportional_fee); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_CHAN_EXTRA_H */ diff --git a/plugins/renepay/dijkstra.c b/plugins/renepay/dijkstra.c deleted file mode 100644 index db41ebaf902d..000000000000 --- a/plugins/renepay/dijkstra.c +++ /dev/null @@ -1,186 +0,0 @@ -#define NDEBUG 1 -#include "config.h" -#include - -/* In the heap we keep node idx, but in this structure we keep the distance - * value associated to every node, and their position in the heap as a pointer - * so that we can update the nodes inside the heap when the distance label is - * changed. - * - * Therefore this is no longer a multipurpose heap, the node_idx must be an - * index between 0 and less than max_num_nodes. */ -struct dijkstra { - // - s64 *distance; - u32 *base; - u32 **heapptr; - size_t heapsize; - struct gheap_ctx gheap_ctx; -}; - -static const s64 INFINITE = INT64_MAX; - -/* Required a global dijkstra for gheap. */ -static struct dijkstra *global_dijkstra; - -/* The heap comparer for Dijkstra search. Since the top element must be the one - * with the smallest distance, we use the operator >, rather than <. */ -static int dijkstra_less_comparer( - const void *const ctx UNUSED, - const void *const a, - const void *const b) -{ - return global_dijkstra->distance[*(u32*)a] - > global_dijkstra->distance[*(u32*)b]; -} - -/* The heap move operator for Dijkstra search. */ -static void dijkstra_item_mover(void *const dst, const void *const src) -{ - u32 src_idx = *(u32*)src; - *(u32*)dst = src_idx; - - // we keep track of the pointer position of each element in the heap, - // for easy update. - global_dijkstra->heapptr[src_idx] = dst; -} - -/* Allocation of resources for the heap. */ -struct dijkstra *dijkstra_new(const tal_t *ctx, size_t max_num_nodes) -{ - struct dijkstra *dijkstra = tal(ctx, struct dijkstra); - - dijkstra->distance = tal_arr(dijkstra,s64,max_num_nodes); - dijkstra->base = tal_arr(dijkstra,u32,max_num_nodes); - dijkstra->heapptr = tal_arrz(dijkstra,u32*,max_num_nodes); - - dijkstra->heapsize=0; - - dijkstra->gheap_ctx.fanout=2; - dijkstra->gheap_ctx.page_chunks=1024; - dijkstra->gheap_ctx.item_size=sizeof(dijkstra->base[0]); - dijkstra->gheap_ctx.less_comparer=dijkstra_less_comparer; - dijkstra->gheap_ctx.less_comparer_ctx=NULL; - dijkstra->gheap_ctx.item_mover=dijkstra_item_mover; - - return dijkstra; -} - - -void dijkstra_init(struct dijkstra *dijkstra) -{ - const size_t max_num_nodes = tal_count(dijkstra->distance); - dijkstra->heapsize=0; - for(size_t i=0;idistance[i]=INFINITE; - dijkstra->heapptr[i] = NULL; - } -} -size_t dijkstra_size(const struct dijkstra *dijkstra) -{ - return dijkstra->heapsize; -} - -size_t dijkstra_maxsize(const struct dijkstra *dijkstra) -{ - return tal_count(dijkstra->distance); -} - -static void dijkstra_append(struct dijkstra *dijkstra, u32 node_idx, s64 distance) -{ - assert(dijkstra_size(dijkstra) < dijkstra_maxsize(dijkstra)); - assert(node_idx < dijkstra_maxsize(dijkstra)); - - const size_t pos = dijkstra->heapsize; - - dijkstra->base[pos]=node_idx; - dijkstra->distance[node_idx]=distance; - dijkstra->heapptr[node_idx] = &(dijkstra->base[pos]); - dijkstra->heapsize++; -} - -void dijkstra_update(struct dijkstra *dijkstra, u32 node_idx, s64 distance) -{ - assert(node_idx < dijkstra_maxsize(dijkstra)); - - if(!dijkstra->heapptr[node_idx]) - { - // not in the heap - dijkstra_append(dijkstra, node_idx,distance); - global_dijkstra = dijkstra; - gheap_restore_heap_after_item_increase( - &dijkstra->gheap_ctx, - dijkstra->base, - dijkstra->heapsize, - dijkstra->heapptr[node_idx] - - dijkstra->base); - global_dijkstra = NULL; - return; - } - - if(dijkstra->distance[node_idx] > distance) - { - // distance decrease - dijkstra->distance[node_idx] = distance; - - global_dijkstra = dijkstra; - gheap_restore_heap_after_item_increase( - &dijkstra->gheap_ctx, - dijkstra->base, - dijkstra->heapsize, - dijkstra->heapptr[node_idx] - - dijkstra->base); - global_dijkstra = NULL; - }else - { - // distance increase - dijkstra->distance[node_idx] = distance; - - global_dijkstra = dijkstra; - gheap_restore_heap_after_item_decrease( - &dijkstra->gheap_ctx, - dijkstra->base, - dijkstra->heapsize, - dijkstra->heapptr[node_idx] - - dijkstra->base); - global_dijkstra = NULL; - - } - // assert(gheap_is_heap(&dijkstra->gheap_ctx, - // dijkstra->base, - // dijkstra_size())); -} - -u32 dijkstra_top(const struct dijkstra *dijkstra) -{ - return dijkstra->base[0]; -} - -bool dijkstra_empty(const struct dijkstra *dijkstra) -{ - return dijkstra->heapsize==0; -} - -void dijkstra_pop(struct dijkstra *dijkstra) -{ - if(dijkstra->heapsize==0) - return; - - const u32 top = dijkstra_top(dijkstra); - assert(dijkstra->heapptr[top]==dijkstra->base); - - global_dijkstra = dijkstra; - gheap_pop_heap( - &dijkstra->gheap_ctx, - dijkstra->base, - dijkstra->heapsize--); - global_dijkstra = NULL; - - dijkstra->heapptr[top]=NULL; -} - -const s64* dijkstra_distance_data(const struct dijkstra *dijkstra) -{ - return dijkstra->distance; -} diff --git a/plugins/renepay/dijkstra.h b/plugins/renepay/dijkstra.h deleted file mode 100644 index bfff1d1dd288..000000000000 --- a/plugins/renepay/dijkstra.h +++ /dev/null @@ -1,30 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_DIJKSTRA_H -#define LIGHTNING_PLUGINS_RENEPAY_DIJKSTRA_H -#include "config.h" -#include -#include -#include - -/* Allocation of resources for the heap. */ -struct dijkstra *dijkstra_new(const tal_t *ctx, size_t max_num_nodes); - -/* Initialization of the heap for a new Dijkstra search. */ -void dijkstra_init(struct dijkstra *dijkstra); - -/* Inserts a new element in the heap. If node_idx was already in the heap then - * its distance value is updated. */ -void dijkstra_update(struct dijkstra *dijkstra, u32 node_idx, s64 distance); - -u32 dijkstra_top(const struct dijkstra *dijkstra); -bool dijkstra_empty(const struct dijkstra *dijkstra); -void dijkstra_pop(struct dijkstra *dijkstra); - -const s64* dijkstra_distance_data(const struct dijkstra *dijkstra); - -/* Number of elements on the heap. */ -size_t dijkstra_size(const struct dijkstra *dijkstra); - -/* Maximum number of elements the heap can host */ -size_t dijkstra_maxsize(const struct dijkstra *dijkstra); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_DIJKSTRA_H */ diff --git a/plugins/renepay/disabledmap.c b/plugins/renepay/disabledmap.c deleted file mode 100644 index 68492eced369..000000000000 --- a/plugins/renepay/disabledmap.c +++ /dev/null @@ -1,125 +0,0 @@ -#include "config.h" -#include - -struct disabledmap *disabledmap_new(const tal_t *ctx) -{ - struct disabledmap *obj = tal(ctx, struct disabledmap); - if (!obj) - return NULL; - - obj->disabled_map = tal(obj, struct scidd_map); - obj->warned_map = tal(obj, struct scidd_map); - obj->disabled_ctx = tal(obj, tal_t); - obj->warned_ctx = tal(obj, tal_t); - obj->disabled_nodes = tal_arr(obj, struct node_id, 0); - - if (!obj->disabled_map || !obj->warned_map || !obj->disabled_nodes || - !obj->disabled_ctx || !obj->warned_ctx) - return tal_free(obj); - - scidd_map_init(obj->disabled_map); - scidd_map_init(obj->warned_map); - return obj; -} - -// FIXME: check success -void disabledmap_reset(struct disabledmap *p) -{ - /* This will remove and free every element in the maps. */ - p->warned_ctx = tal_free(p->warned_ctx); - p->disabled_ctx = tal_free(p->disabled_ctx); - - tal_resize(&p->disabled_nodes, 0); - - p->disabled_ctx = tal(p, tal_t); - p->warned_ctx = tal(p, tal_t); -} - -static void remove_scidd(struct short_channel_id_dir *scidd, - struct scidd_map *map) -{ - scidd_map_del(map, scidd); -} - -// FIXME: check success -void disabledmap_add_channel(struct disabledmap *p, - struct short_channel_id_dir scidd) -{ - struct short_channel_id_dir *ptr_scidd = - scidd_map_get(p->disabled_map, scidd); - if (ptr_scidd) { - /* htable allows for duplicates, but we don't want duplicates. - */ - return; - } - ptr_scidd = - tal_dup(p->disabled_ctx, struct short_channel_id_dir, &scidd); - scidd_map_add(p->disabled_map, ptr_scidd); - tal_add_destructor2(ptr_scidd, remove_scidd, p->disabled_map); -} - -// FIXME: check success -void disabledmap_warn_channel(struct disabledmap *p, - struct short_channel_id_dir scidd) -{ - struct short_channel_id_dir *ptr_scidd = - scidd_map_get(p->warned_map, scidd); - if (ptr_scidd) { - /* htable allows for duplicates, but we don't want duplicates. - */ - return; - } - ptr_scidd = tal_dup(p->warned_ctx, struct short_channel_id_dir, &scidd); - scidd_map_add(p->warned_map, ptr_scidd); - tal_add_destructor2(ptr_scidd, remove_scidd, p->warned_map); -} - -// FIXME: check success -void disabledmap_add_node(struct disabledmap *p, struct node_id node) -{ - tal_arr_expand(&p->disabled_nodes, node); -} - -bool disabledmap_channel_is_warned(struct disabledmap *p, - struct short_channel_id_dir scidd) -{ - return scidd_map_get(p->warned_map, scidd) != NULL; -} - -bitmap *tal_disabledmap_get_bitmap(const tal_t *ctx, struct disabledmap *p, - const struct gossmap *gossmap) -{ - bitmap *disabled = tal_arrz( - ctx, bitmap, 2 * BITMAP_NWORDS(gossmap_max_chan_idx(gossmap))); - if (!disabled) - return NULL; - - /* Disable every channel in the list of disabled scids. */ - struct scidd_map_iter it; - for(struct short_channel_id_dir *scidd = scidd_map_first(p->disabled_map,&it); - scidd; - scidd = scidd_map_next(p->disabled_map, &it)){ - - struct gossmap_chan *c = - gossmap_find_chan(gossmap, &scidd->scid); - if (c) - bitmap_set_bit(disabled, - gossmap_chan_idx(gossmap, c) * 2 + - scidd->dir); - } - - /* Disable all channels that lead to a disabled node. */ - for (size_t i = 0; i < tal_count(p->disabled_nodes); i++) { - const struct gossmap_node *node = - gossmap_find_node(gossmap, &p->disabled_nodes[i]); - - for (size_t j = 0; j < node->num_chans; j++) { - int half; - const struct gossmap_chan *c = - gossmap_nth_chan(gossmap, node, j, &half); - bitmap_set_bit(disabled, - gossmap_chan_idx(gossmap, c) * 2 + half); - } - } - return disabled; -} diff --git a/plugins/renepay/disabledmap.h b/plugins/renepay/disabledmap.h deleted file mode 100644 index 7bd0487bd23d..000000000000 --- a/plugins/renepay/disabledmap.h +++ /dev/null @@ -1,64 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H -#define LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H - -#include "config.h" -#include -#include -#include -#include -#include - -static inline size_t hash_scidd(const struct short_channel_id_dir scidd) -{ - /* scids cost money to generate, so simple hash works here. Letting same - * scid with two directions collide. */ - return (scidd.scid.u64 >> 32) ^ (scidd.scid.u64 >> 16) ^ scidd.scid.u64; -} - -static inline struct short_channel_id_dir -self_scidd(const struct short_channel_id_dir *self) -{ - return *self; -} - -static inline bool -my_short_channel_id_dir_eq(const struct short_channel_id_dir *scidd_a, - const struct short_channel_id_dir scidd_b) -{ - return short_channel_id_eq(scidd_a->scid, scidd_b.scid) && - scidd_a->dir == scidd_b.dir; -} - -/* A htable for short_channel_id_dir, the structure itself is the element key. - */ -HTABLE_DEFINE_NODUPS_TYPE(struct short_channel_id_dir, self_scidd, hash_scidd, - my_short_channel_id_dir_eq, scidd_map); - -struct disabledmap { - /* Channels we decided to disable for various reasons. */ - struct scidd_map *disabled_map; - tal_t *disabled_ctx; - - /* Channels that we flagged for failures. If warned two times we will - * disable it. */ - struct scidd_map *warned_map; - tal_t *warned_ctx; - - /* nodes we disable */ - // FIXME: use a map also for nodes - struct node_id *disabled_nodes; -}; - -void disabledmap_reset(struct disabledmap *p); -struct disabledmap *disabledmap_new(const tal_t *ctx); -void disabledmap_add_channel(struct disabledmap *p, - struct short_channel_id_dir scidd); -void disabledmap_warn_channel(struct disabledmap *p, - struct short_channel_id_dir scidd); -void disabledmap_add_node(struct disabledmap *p, struct node_id node); -bool disabledmap_channel_is_warned(struct disabledmap *p, - struct short_channel_id_dir scidd); -bitmap *tal_disabledmap_get_bitmap(const tal_t *ctx, struct disabledmap *p, - const struct gossmap *gossmap); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H */ diff --git a/plugins/renepay/flow.c b/plugins/renepay/flow.c deleted file mode 100644 index 6d4d25aa1ccd..000000000000 --- a/plugins/renepay/flow.c +++ /dev/null @@ -1,489 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef SUPERVERBOSE -#define SUPERVERBOSE(...) -#else -#define SUPERVERBOSE_ENABLED 1 -#endif - -struct amount_msat *tal_flow_amounts(const tal_t *ctx, const struct flow *flow, - bool compute_fees) -{ - const size_t pathlen = tal_count(flow->path); - struct amount_msat *amounts = tal_arr(ctx, struct amount_msat, pathlen); - amounts[pathlen - 1] = flow->amount; - - for (int i = (int)pathlen - 2; i >= 0; i--) { - const struct half_chan *h = flow_edge(flow, i + 1); - amounts[i] = amounts[i + 1]; - if (compute_fees && - !amount_msat_add_fee(&amounts[i], h->base_fee, - h->proportional_fee)) - goto function_fail; - } - - return amounts; - -function_fail: - return tal_free(amounts); -} - -const char *fmt_flows(const tal_t *ctx, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - struct flow **flows) -{ - tal_t *this_ctx = tal(ctx, tal_t); - char *buff = tal_fmt(ctx, "%zu subflows\n", tal_count(flows)); - for (size_t i = 0; i < tal_count(flows); i++) { - struct amount_msat fee, delivered; - tal_append_fmt(&buff, " "); - for (size_t j = 0; j < tal_count(flows[i]->path); j++) { - struct short_channel_id scid = - gossmap_chan_scid(gossmap, flows[i]->path[j]); - tal_append_fmt(&buff, "%s%s", j ? "->" : "", - fmt_short_channel_id(this_ctx, scid)); - } - delivered = flows[i]->amount; - if (!flow_fee(&fee, flows[i])) { - abort(); - } - tal_append_fmt(&buff, " prob %.2f, %s delivered with fee %s\n", - flows[i]->success_prob, - fmt_amount_msat(this_ctx, delivered), - fmt_amount_msat(this_ctx, fee)); - } - - tal_free(this_ctx); - return buff; -} - -/* Returns the greatest amount we can deliver to the destination using this - * route. It takes into account the current knowledge, pending HTLC, - * htlc_max and fees. - * - * It fails if the maximum that we can - * deliver at node i is smaller than the minimum required to forward the least - * amount greater than zero to the next node. */ -enum renepay_errorcode -flow_maximum_deliverable(struct amount_msat *max_deliverable, - const struct flow *flow, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan **bad_channel) -{ - assert(tal_count(flow->path) > 0); - assert(tal_count(flow->dirs) > 0); - assert(tal_count(flow->path) == tal_count(flow->dirs)); - struct amount_msat x; - enum renepay_errorcode err; - - err = channel_liquidity(&x, gossmap, chan_extra_map, flow->path[0], - flow->dirs[0]); - if(err){ - if(bad_channel)*bad_channel = flow->path[0]; - return err; - } - x = amount_msat_min(x, gossmap_chan_htlc_max(flow->path[0], flow->dirs[0])); - - if(amount_msat_is_zero(x)) - { - if(bad_channel)*bad_channel = flow->path[0]; - return RENEPAY_BAD_CHANNEL; - } - - for (size_t i = 1; i < tal_count(flow->path); ++i) { - // ith node can forward up to 'liquidity_cap' because of the ith - // channel liquidity bound - struct amount_msat liquidity_cap; - - err = channel_liquidity(&liquidity_cap, gossmap, chan_extra_map, - flow->path[i], flow->dirs[i]); - if(err) { - if(bad_channel)*bad_channel = flow->path[i]; - return err; - } - - /* ith node can receive up to 'x', therefore he will not forward - * more than 'forward_cap' that we compute below inverting the - * fee equation. */ - struct amount_msat forward_cap; - err = channel_maximum_forward(&forward_cap, flow->path[i], - flow->dirs[i], x); - if(err) - { - if(bad_channel)*bad_channel = flow->path[i]; - return err; - } - struct amount_msat x_new = - amount_msat_min(forward_cap, liquidity_cap); - x_new = amount_msat_min( - x_new, gossmap_chan_htlc_max(flow->path[i], flow->dirs[i])); - - /* safety check: amounts decrease along the route */ - assert(amount_msat_less_eq(x_new, x)); - - if(amount_msat_is_zero(x_new)) - { - if(bad_channel)*bad_channel = flow->path[i]; - return RENEPAY_BAD_CHANNEL; - } - - /* safety check: the max liquidity in the next hop + fees cannot - be greater than the max liquidity in the current hop, IF the - next hop is non-zero. */ - struct amount_msat x_check = x_new; - assert( - amount_msat_add_fee(&x_check, flow_edge(flow, i)->base_fee, - flow_edge(flow, i)->proportional_fee)); - assert(amount_msat_less_eq(x_check, x)); - - x = x_new; - } - assert(!amount_msat_is_zero(x)); - *max_deliverable = x; - return RENEPAY_NOERROR; -} - -/* Returns the smallest amount we can send so that the destination can get one - * HTLC of any size. It takes into account htlc_min and fees. - * */ -// static enum renepay_errorcode -// flow_minimum_sendable(struct amount_msat *min_sendable UNUSED, -// const struct flow *flow UNUSED, -// const struct gossmap *gossmap UNUSED, -// struct chan_extra_map *chan_extra_map UNUSED) -// { -// // TODO -// return RENEPAY_NOERROR; -// } - -/* How much do we deliver to destination using this set of routes */ -bool flowset_delivers(struct amount_msat *delivers, struct flow **flows) -{ - struct amount_msat final = AMOUNT_MSAT(0); - for (size_t i = 0; i < tal_count(flows); i++) { - if (!amount_msat_accumulate(&final, flows[i]->amount)) - return false; - } - *delivers = final; - return true; -} - -/* FIXME: pass a pointer to const here */ -size_t flowset_size(struct flow **flows) -{ - size_t size = 0; - for (size_t i = 0; i < tal_count(flows); i++) - size += tal_count(flows[i]->path); - return size; -} - -/* Checks if the flows satisfy the liquidity bounds imposed by the known maximum - * liquidity and pending HTLCs. - * - * FIXME The function returns false even in the case of failure. The caller has - * no way of knowing the difference between a failure of evaluation and a - * negative answer. */ -// static bool check_liquidity_bounds(struct flow **flows, -// const struct gossmap *gossmap, -// struct chan_extra_map *chan_extra_map) -// { -// bool check = true; -// for (size_t i = 0; i < tal_count(flows); ++i) { -// struct amount_msat max_deliverable; -// if (!flow_maximum_deliverable(&max_deliverable, flows[i], -// gossmap, chan_extra_map)) -// return false; -// struct amount_msat delivers = flow_delivers(flows[i]); -// check &= amount_msat_less_eq(delivers, max_deliverable); -// } -// return check; -// } - -/* Compute the prob. of success of a set of concurrent set of flows. - * - * IMPORTANT: this is not simply the multiplication of the prob. of success of - * all of them, because they're not independent events. A flow that passes - * through a channel c changes that channel's liquidity and then if another flow - * passes through that same channel the previous liquidity change must be taken - * into account. - * - * P(A and B) != P(A) * P(B), - * - * but - * - * P(A and B) = P(A) * P(B | A) - * - * also due to the linear form of P() we have - * - * P(A and B) = P(A + B) - * */ -struct chan_inflight_flow -{ - struct amount_msat half[2]; -}; - -/* @ctx: allocator - * @flows: flows for which the probability is computed - * @gossmap: gossip - * @chan_extra_map: knowledge - * @compute_fees: compute fees along the way or not - * @fail: if a failure occurs, returns a message to the caller - * */ -// TODO(eduardo): here chan_extra_map should be const -// TODO(eduardo): here flows should be const -double flowset_probability(const tal_t *ctx, struct flow **flows, - const struct gossmap *const gossmap, - struct chan_extra_map *chan_extra_map, - bool compute_fees, - char **fail) -{ - assert(flows); - assert(gossmap); - assert(chan_extra_map); - tal_t *this_ctx = tal(ctx, tal_t); - double prob = 1.0; - - // TODO(eduardo): should it be better to use a map instead of an array - // here? - const size_t max_num_chans = gossmap_max_chan_idx(gossmap); - struct chan_inflight_flow *in_flight = - tal_arr(this_ctx, struct chan_inflight_flow, max_num_chans); - - if (!in_flight) { - if (fail) - *fail = tal_fmt(ctx, "failed to allocate memory"); - goto function_fail; - } - - for (size_t i = 0; i < max_num_chans; ++i) { - in_flight[i].half[0] = in_flight[i].half[1] = AMOUNT_MSAT(0); - } - - for (size_t i = 0; i < tal_count(flows); ++i) { - const struct flow *f = flows[i]; - const size_t pathlen = tal_count(f->path); - struct amount_msat *amounts = - tal_flow_amounts(this_ctx, f, compute_fees); - if (!amounts) - { - if (fail) - *fail = tal_fmt( - ctx, - "failed to compute amounts along the path"); - goto function_fail; - } - - for (size_t j = 0; j < pathlen; ++j) { - const struct chan_extra_half *h = - get_chan_extra_half_by_chan(gossmap, chan_extra_map, - f->path[j], f->dirs[j]); - if (!h) { - if (fail) - *fail = tal_fmt( - ctx, - "channel not found in chan_extra_map"); - goto function_fail; - } - const u32 c_idx = gossmap_chan_idx(gossmap, f->path[j]); - const int c_dir = f->dirs[j]; - - const struct amount_msat deliver = amounts[j]; - - struct amount_msat prev_flow, all_inflight; - if (!amount_msat_add(&prev_flow, h->htlc_total, - in_flight[c_idx].half[c_dir]) || - !amount_msat_add(&all_inflight, prev_flow, - deliver)) { - if (fail) - *fail = tal_fmt( - ctx, - "in-flight amount_msat overflow"); - goto function_fail; - } - - if (!amount_msat_less_eq(all_inflight, h->known_max)) { - if (fail) - *fail = tal_fmt( - ctx, - "in-flight (%s) exceeds known_max " - "(%s)", - fmt_amount_msat(ctx, all_inflight), - fmt_amount_msat(ctx, h->known_max)); - goto function_fail; - } - - double edge_prob = edge_probability( - h->known_min, h->known_max, prev_flow, deliver); - - if (edge_prob < 0) { - if (fail) - *fail = tal_fmt(ctx, - "edge_probability failed"); - goto function_fail; - } - prob *= edge_prob; - - if (!amount_msat_add(&in_flight[c_idx].half[c_dir], - in_flight[c_idx].half[c_dir], - deliver)) { - if (fail) - *fail = tal_fmt( - ctx, "in-flight amount_msat overflow"); - goto function_fail; - } - } - } - tal_free(this_ctx); - return prob; - - function_fail: - tal_free(this_ctx); - return -1; -} - -bool flow_spend(struct amount_msat *ret, struct flow *flow) -{ - assert(ret); - assert(flow); - const size_t pathlen = tal_count(flow->path); - struct amount_msat spend = flow->amount; - - for (int i = (int)pathlen - 2; i >= 0; i--) { - const struct half_chan *h = flow_edge(flow, i + 1); - if (!amount_msat_add_fee(&spend, h->base_fee, - h->proportional_fee)) - goto function_fail; - } - - *ret = spend; - return true; - -function_fail: - return false; -} - -bool flow_fee(struct amount_msat *ret, struct flow *flow) -{ - assert(ret); - assert(flow); - struct amount_msat fee; - struct amount_msat spend; - if (!flow_spend(&spend, flow)) - goto function_fail; - if (!amount_msat_sub(&fee, spend, flow->amount)) - goto function_fail; - - *ret = fee; - return true; - -function_fail: - return false; -} - -bool flowset_fee(struct amount_msat *ret, struct flow **flows) -{ - assert(ret); - assert(flows); - struct amount_msat fee = AMOUNT_MSAT(0); - for (size_t i = 0; i < tal_count(flows); i++) { - struct amount_msat this_fee; - if (!flow_fee(&this_fee, flows[i])) - return false; - if (!amount_msat_add(&fee, this_fee, fee)) - return false; - } - *ret = fee; - return true; -} - -/* Helper to access the half chan at flow index idx */ -const struct half_chan *flow_edge(const struct flow *flow, size_t idx) -{ - assert(flow); - assert(idx < tal_count(flow->path)); - return &flow->path[idx]->half[flow->dirs[idx]]; -} - -/* Assign the delivered amount to the flow if it fits - the path maximum capacity. */ -bool flow_assign_delivery(struct flow *flow, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - struct amount_msat requested_amount) -{ - struct amount_msat max_deliverable = AMOUNT_MSAT(0); - if (flow_maximum_deliverable(&max_deliverable, flow, gossmap, - chan_extra_map, NULL)) - return false; - assert(!amount_msat_is_zero(max_deliverable)); - flow->amount = amount_msat_min(requested_amount, max_deliverable); - return true; -} - -/* Helper function to find the success_prob for a single flow - * - * IMPORTANT: flow->success_prob is misleading, because that's the prob. of - * success provided that there are no other flows in the current MPP flow set. - * */ -double flow_probability(struct flow *flow, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - bool compute_fees) -{ - assert(flow); - assert(gossmap); - assert(chan_extra_map); - const size_t pathlen = tal_count(flow->path); - struct amount_msat spend = flow->amount; - double prob = 1.0; - - for (int i = (int)pathlen - 1; i >= 0; i--) { - const struct half_chan *h = flow_edge(flow, i); - const struct chan_extra_half *eh = get_chan_extra_half_by_chan( - gossmap, chan_extra_map, flow->path[i], flow->dirs[i]); - - prob *= edge_probability(eh->known_min, eh->known_max, - eh->htlc_total, spend); - - if (prob < 0) - goto function_fail; - if (compute_fees && !amount_msat_add_fee(&spend, h->base_fee, - h->proportional_fee)) - goto function_fail; - } - - return prob; - -function_fail: - return -1.; -} - -u64 flow_delay(const struct flow *flow) -{ - u64 delay = 0; - for (size_t i = 0; i < tal_count(flow->path); i++) - delay += flow_edge(flow, i)->delay; - return delay; -} - -u64 flows_worst_delay(struct flow **flows) -{ - u64 maxdelay = 0; - for (size_t i = 0; i < tal_count(flows); i++) { - u64 delay = flow_delay(flows[i]); - if (delay > maxdelay) - maxdelay = delay; - } - return maxdelay; -} - -#ifndef SUPERVERBOSE_ENABLED -#undef SUPERVERBOSE -#endif diff --git a/plugins/renepay/flow.h b/plugins/renepay/flow.h deleted file mode 100644 index 959eb42f3f64..000000000000 --- a/plugins/renepay/flow.h +++ /dev/null @@ -1,95 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_FLOW_H -#define LIGHTNING_PLUGINS_RENEPAY_FLOW_H -#include "config.h" -#include -#include -#include -#include -#include -#include - -/* An actual partial flow. */ -struct flow { - const struct gossmap_chan **path; - /* The directions to traverse. */ - int *dirs; - /* Amounts for this flow (fees mean this shrinks across path). */ - double success_prob; - struct amount_msat amount; -}; - -const char *fmt_flows(const tal_t *ctx, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - struct flow **flows); - -/* Helper to access the half chan at flow index idx */ -const struct half_chan *flow_edge(const struct flow *flow, size_t idx); - -/* A big number, meaning "don't bother" (not infinite, since you may add) */ -#define FLOW_INF_COST 100000000.0 - -/* Cost function to send @f msat through @c in direction @dir, - * given we already have a flow of prev_flow. */ -double flow_edge_cost(const struct gossmap *gossmap, - const struct gossmap_chan *c, int dir, - const struct amount_msat known_min, - const struct amount_msat known_max, - struct amount_msat prev_flow, - struct amount_msat f, - double mu, - double basefee_penalty, - double delay_riskfactor); - -/* Compute the prob. of success of a set of concurrent set of flows. */ -double flowset_probability(const tal_t *ctx, struct flow **flows, - const struct gossmap *const gossmap, - struct chan_extra_map *chan_extra_map, - bool compute_fees, char **fail); - -/* How much do we need to send to make this flow arrive. */ -bool flow_spend(struct amount_msat *ret, struct flow *flow); - -/* How much do we pay in fees to make this flow arrive. */ -bool flow_fee(struct amount_msat *ret, struct flow *flow); - -bool flowset_fee(struct amount_msat *fee, struct flow **flows); - -bool flowset_delivers(struct amount_msat *delivers, struct flow **flows); - -/* how many channels are being used */ -size_t flowset_size(struct flow **flows); - -static inline struct amount_msat flow_delivers(const struct flow *flow) -{ - return flow->amount; -} - -struct amount_msat *tal_flow_amounts(const tal_t *ctx, const struct flow *flow, - bool compute_fees); - -enum renepay_errorcode -flow_maximum_deliverable(struct amount_msat *max_deliverable, - const struct flow *flow, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - const struct gossmap_chan **bad_channel); - -/* Assign the delivered amount to the flow if it fits - the path maximum capacity. */ -bool flow_assign_delivery(struct flow *flow, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - struct amount_msat requested_amount); - -double flow_probability(struct flow *flow, const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - bool compute_fees); - -u64 flow_delay(const struct flow *flow); -u64 flows_worst_delay(struct flow **flows); - -struct flow ** -flows_ensure_liquidity_constraints(const tal_t *ctx, struct flow **flows TAKES, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_FLOW_H */ diff --git a/plugins/renepay/main.c b/plugins/renepay/main.c index 64923b056e7e..e2db829d8b3a 100644 --- a/plugins/renepay/main.c +++ b/plugins/renepay/main.c @@ -30,8 +30,6 @@ struct pay_plugin *pay_plugin; static void memleak_mark(struct plugin *p, struct htable *memtable) { memleak_scan_obj(memtable, pay_plugin); - memleak_scan_htable(memtable, - &pay_plugin->uncertainty->chan_extra_map->raw); memleak_scan_htable(memtable, &pay_plugin->payment_map->raw); memleak_scan_htable(memtable, &pay_plugin->pending_routes->raw); } @@ -92,14 +90,6 @@ static const char *init(struct command *init_cmd, plugin_log(p, LOG_DBG, "gossmap ignored %zu channel updates", num_channel_updates_rejected); - pay_plugin->uncertainty = uncertainty_new(pay_plugin); - int skipped_count = - uncertainty_update(pay_plugin->uncertainty, pay_plugin->gossmap); - if (skipped_count) - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, - "%s: uncertainty was updated but %d channels have " - "been ignored.", - __func__, skipped_count); plugin_set_memleak_handler(p, memleak_mark); struct out_req *req = diff --git a/plugins/renepay/mcf.c b/plugins/renepay/mcf.c deleted file mode 100644 index 7d2f1490300a..000000000000 --- a/plugins/renepay/mcf.c +++ /dev/null @@ -1,1860 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* # Optimal payments - * - * In this module we reduce the routing optimization problem to a linear - * cost optimization problem and find a solution using MCF algorithms. - * The optimization of the routing itself doesn't need a precise numerical - * solution, since we can be happy near optimal results; e.g. paying 100 msat or - * 101 msat for fees doesn't make any difference if we wish to deliver 1M sats. - * On the other hand, we are now also considering Pickhard's - * [1] model to improve payment reliability, - * hence our optimization moves to a 2D space: either we like to maximize the - * probability of success of a payment or minimize the routing fees, or - * alternatively we construct a function of the two that gives a good compromise. - * - * Therefore from now own, the definition of optimal is a matter of choice. - * To simplify the API of this module, we think the best way to state the - * problem is: - * - * Find a routing solution that pays the least of fees while keeping - * the probability of success above a certain value `min_probability`. - * - * - * # Fee Cost - * - * Routing fees is non-linear function of the payment flow x, that's true even - * without the base fee: - * - * fee_msat = base_msat + floor(millionths*x_msat / 10^6) - * - * We approximate this fee into a linear function by computing a slope `c_fee` such - * that: - * - * fee_microsat = c_fee * x_sat - * - * Function `linear_fee_cost` computes `c_fee` based on the base and - * proportional fees of a channel. - * The final product if microsat because if only - * the proportional fee was considered we can have c_fee = millionths. - * Moving to costs based in msats means we have to either truncate payments - * below 1ksats or estimate as 0 cost for channels with less than 1000ppm. - * - * TODO(eduardo): shall we build a linear cost function in msats? - * - * # Probability cost - * - * The probability of success P of the payment is the product of the prob. of - * success of forwarding parts of the payment over all routing channels. This - * problem is separable if we log it, and since we would like to increase P, - * then we can seek to minimize -log(P), and that's our prob. cost function [1]. - * - * - log P = sum_{i} - log P_i - * - * The probability of success `P_i` of sending some flow `x` on a channel with - * liquidity l in the range a<=l a - * = 1. ; for x <= a - * - * Notice that unlike the similar formula in [1], the one we propose does not - * contain the quantization shot noise for counting states. The formula remains - * valid independently of the liquidity units (sats or msats). - * - * The cost associated to probability P is then -k log P, where k is some - * constant. For k=1 we get the following table: - * - * prob | cost - * ----------- - * 0.01 | 4.6 - * 0.02 | 3.9 - * 0.05 | 3.0 - * 0.10 | 2.3 - * 0.20 | 1.6 - * 0.50 | 0.69 - * 0.80 | 0.22 - * 0.90 | 0.10 - * 0.95 | 0.05 - * 0.98 | 0.02 - * 0.99 | 0.01 - * - * Clearly -log P(x) is non-linear; we try to linearize it piecewise: - * split the channel into 4 arcs representing 4 liquidity regions: - * - * arc_0 -> [0, a) - * arc_1 -> [a, a+(b-a)*f1) - * arc_2 -> [a+(b-a)*f1, a+(b-a)*f2) - * arc_3 -> [a+(b-a)*f2, a+(b-a)*f3) - * - * where f1 = 0.5, f2 = 0.8, f3 = 0.95; - * We fill arc_0's capacity with complete certainty P=1, then if more flow is - * needed we start filling the capacity in arc_1 until the total probability - * of success reaches P=0.5, then arc_2 until P=1-0.8=0.2, and finally arc_3 until - * P=1-0.95=0.05. We don't go further than 5% prob. of success per channel. - - * TODO(eduardo): this channel linearization is hard coded into - * `CHANNEL_PIVOTS`, maybe we can parametrize this to take values from the config file. - * - * With this choice, the slope of the linear cost function becomes: - * - * m_0 = 0 - * m_1 = 1.38 k /(b-a) - * m_2 = 3.05 k /(b-a) - * m_3 = 9.24 k /(b-a) - * - * Notice that one of the assumptions in [2] for the MCF problem is that flows - * and the slope of the costs functions are integer numbers. The only way we - * have at hand to make it so, is to choose a universal value of `k` that scales - * up the slopes so that floor(m_i) is not zero for every arc. - * - * # Combine fee and prob. costs - * - * We attempt to solve the original problem of finding the solution that - * pays the least fees while keeping the prob. of success above a certain value, - * by constructing a cost function which is a linear combination of fee and - * prob. costs. - * TODO(eduardo): investigate how this procedure is justified, - * possibly with the use of Lagrange optimization theory. - * - * At first, prob. and fee costs live in different dimensions, they cannot be - * summed, it's like comparing apples and oranges. - * However we propose to scale the prob. cost by a global factor k that - * translates into the monetization of prob. cost. - * - * k/1000, for instance, becomes the equivalent monetary cost - * of increasing the probability of success by 0.1% for P~100%. - * - * The input parameter `prob_cost_factor` in the function `minflow` is defined - * as the PPM from the delivery amount `T` we are *willing to pay* to increase the - * prob. of success by 0.1%: - * - * k_microsat = floor(1000*prob_cost_factor * T_sat) - * - * Is this enough to make integer prob. cost per unit flow? - * For `prob_cost_factor=10`; i.e. we pay 10ppm for increasing the prob. by - * 0.1%, we get that - * - * -> any arc with (b-a) > 10000 T, will have zero prob. cost, which is - * reasonable because even if all the flow passes through that arc, we get - * a 1.3 T/(b-a) ~ 0.01% prob. of failure at most. - * - * -> if (b-a) ~ 10000 T, then the arc will have unit cost, or just that we - * pay 1 microsat for every sat we send through this arc. - * - * -> it would be desirable to have a high proportional fee when (b-a)~T, - * because prob. of failure start to become very high. - * In this case we get to pay 10000 microsats for every sat. - * - * Once `k` is fixed then we can combine the linear prob. and fee costs, both - * are in monetary units. - * - * Note: with costs in microsats, because slopes represent ppm and flows are in - * sats, then our integer bounds with 64 bits are such that we can move as many - * as 10'000 BTC without overflow: - * - * 10^6 (max ppm) * 10^8 (sats per BTC) * 10^4 = 10^18 - * - * # References - * - * [1] Pickhardt and Richter, https://arxiv.org/abs/2107.05322 - * [2] R.K. Ahuja, T.L. Magnanti, and J.B. Orlin. Network Flows: - * Theory, Algorithms, and Applications. Prentice Hall, 1993. - * - * - * TODO(eduardo) it would be interesting to see: - * how much do we pay for reliability? - * Cost_fee(most reliable solution) - Cost_fee(cheapest solution) - * - * TODO(eduardo): it would be interesting to see: - * how likely is the most reliable path with respect to the cheapest? - * Prob(reliable)/Prob(cheapest) = Exp(Cost_prob(cheapest)-Cost_prob(reliable)) - * - * */ - -#define PARTS_BITS 2 -#define CHANNEL_PARTS (1 << PARTS_BITS) - -// These are the probability intervals we use to decompose a channel into linear -// cost function arcs. -static const double CHANNEL_PIVOTS[]={0,0.5,0.8,0.95}; - -static const s64 INFINITE = INT64_MAX; -static const u64 INFINITE_MSAT = UINT64_MAX; -static const u32 INVALID_INDEX = 0xffffffff; -static const s64 MU_MAX = 128; - -/* Let's try this encoding of arcs: - * Each channel `c` has two possible directions identified by a bit - * `half` or `!half`, and each one of them has to be - * decomposed into 4 liquidity parts in order to - * linearize the cost function, but also to solve MCF - * problem we need to keep track of flows in the - * residual network hence we need for each directed arc - * in the network there must be another arc in the - * opposite direction refered to as it's dual. In total - * 1+2+1 additional bits of information: - * - * (chan_idx)(half)(part)(dual) - * - * That means, for each channel we need to store the - * information of 16 arcs. If we implement a convex-cost - * solver then we can reduce that number to size(half)size(dual)=4. - * - * In the adjacency of a `node` we are going to store - * the outgoing arcs. If we ever need to loop over the - * incoming arcs then we will define a reverse adjacency - * API. - * Then for each outgoing channel `(c,half)` there will - * be 4 parts for the actual residual capacity, hence - * with the dual bit set to 0: - * - * (c,half,0,0) - * (c,half,1,0) - * (c,half,2,0) - * (c,half,3,0) - * - * and also we need to consider the dual arcs - * corresponding to the channel direction `(c,!half)` - * (the dual has reverse direction): - * - * (c,!half,0,1) - * (c,!half,1,1) - * (c,!half,2,1) - * (c,!half,3,1) - * - * These are the 8 outgoing arcs relative to `node` and - * associated with channel `c`. The incoming arcs will - * be: - * - * (c,!half,0,0) - * (c,!half,1,0) - * (c,!half,2,0) - * (c,!half,3,0) - * - * (c,half,0,1) - * (c,half,1,1) - * (c,half,2,1) - * (c,half,3,1) - * - * but they will be stored as outgoing arcs on the peer - * node `next`. - * - * I hope this will clarify my future self when I forget. - * - * */ - -/* - * We want to use the whole number here for convenience, but - * we can't us a union, since bit order is implementation-defined and - * we want chanidx on the highest bits: - * - * [ 0 1 2 3 4 5 6 ... 31 ] - * dual part chandir chanidx - */ -struct arc { - u32 idx; -}; - -#define ARC_DUAL_BITOFF (0) -#define ARC_PART_BITOFF (1) -#define ARC_CHANDIR_BITOFF (1 + PARTS_BITS) -#define ARC_CHANIDX_BITOFF (1 + PARTS_BITS + 1) -#define ARC_CHANIDX_BITS (32 - ARC_CHANIDX_BITOFF) - -/* How many arcs can we have for a single channel? - * linearization parts, both directions, and dual */ -#define ARCS_PER_CHANNEL ((size_t)1 << (PARTS_BITS + 1 + 1)) - -static inline void arc_to_parts(struct arc arc, - u32 *chanidx, - int *chandir, - u32 *part, - bool *dual) -{ - if (chanidx) - *chanidx = (arc.idx >> ARC_CHANIDX_BITOFF); - if (chandir) - *chandir = (arc.idx >> ARC_CHANDIR_BITOFF) & 1; - if (part) - *part = (arc.idx >> ARC_PART_BITOFF) & ((1 << PARTS_BITS)-1); - if (dual) - *dual = (arc.idx >> ARC_DUAL_BITOFF) & 1; -} - -static inline struct arc arc_from_parts(u32 chanidx, int chandir, u32 part, bool dual) -{ - struct arc arc; - - assert(part < CHANNEL_PARTS); - assert(chandir == 0 || chandir == 1); - assert(chanidx < (1U << ARC_CHANIDX_BITS)); - arc.idx = ((u32)dual << ARC_DUAL_BITOFF) - | (part << ARC_PART_BITOFF) - | ((u32)chandir << ARC_CHANDIR_BITOFF) - | (chanidx << ARC_CHANIDX_BITOFF); - return arc; -} - -#define MAX(x, y) (((x) > (y)) ? (x) : (y)) -#define MIN(x, y) (((x) < (y)) ? (x) : (y)) - -struct pay_parameters { - /* The gossmap we are using */ - struct gossmap *gossmap; - const struct gossmap_node *source; - const struct gossmap_node *target; - - /* Extra information we intuited about the channels */ - struct chan_extra_map *chan_extra_map; - - /* Optional bitarray of disabled channels. */ - const bitmap *disabled; - - // how much we pay - struct amount_msat amount; - - // channel linearization parameters - double cap_fraction[CHANNEL_PARTS], - cost_fraction[CHANNEL_PARTS]; - - struct amount_msat max_fee; - double min_probability; - double base_probability; - double delay_feefactor; - double base_fee_penalty; - u32 prob_cost_factor; -}; - -/* Representation of the linear MCF network. - * This contains the topology of the extended network (after linearization and - * addition of arc duality). - * This contains also the arc probability and linear fee cost, as well as - * capacity; these quantities remain constant during MCF execution. */ -struct linear_network -{ - u32 *arc_tail_node; - // notice that a tail node is not needed, - // because the tail of arc is the head of dual(arc) - - struct arc *node_adjacency_next_arc; - struct arc *node_adjacency_first_arc; - - // probability and fee cost associated to an arc - s64 *arc_prob_cost, *arc_fee_cost; - s64 *capacity; - - size_t max_num_arcs,max_num_nodes; -}; - -/* This is the structure that keeps track of the network properties while we - * seek for a solution. */ -struct residual_network { - /* residual capacity on arcs */ - s64 *cap; - - /* some combination of prob. cost and fee cost on arcs */ - s64 *cost; - - /* potential function on nodes */ - s64 *potential; -}; - -/* Helper function. - * Given an arc idx, return the dual's idx in the residual network. */ -static struct arc arc_dual(struct arc arc) -{ - arc.idx ^= (1U << ARC_DUAL_BITOFF); - return arc; -} -/* Helper function. */ -static bool arc_is_dual(struct arc arc) -{ - bool dual; - arc_to_parts(arc, NULL, NULL, NULL, &dual); - return dual; -} - -/* Helper function. - * Given an arc of the network (not residual) give me the flow. */ -static s64 get_arc_flow( - const struct residual_network *network, - const struct arc arc) -{ - assert(!arc_is_dual(arc)); - assert(arc_dual(arc).idx < tal_count(network->cap)); - return network->cap[ arc_dual(arc).idx ]; -} - -/* Helper function. - * Given an arc idx, return the node from which this arc emanates in the residual network. */ -static u32 arc_tail(const struct linear_network *linear_network, - const struct arc arc) -{ - assert(arc.idx < tal_count(linear_network->arc_tail_node)); - return linear_network->arc_tail_node[ arc.idx ]; -} -/* Helper function. - * Given an arc idx, return the node that this arc is pointing to in the residual network. */ -static u32 arc_head(const struct linear_network *linear_network, - const struct arc arc) -{ - const struct arc dual = arc_dual(arc); - assert(dual.idx < tal_count(linear_network->arc_tail_node)); - return linear_network->arc_tail_node[dual.idx]; -} - -/* Helper function. - * Given node idx `node`, return the idx of the first arc whose tail is `node`. - * */ -static struct arc node_adjacency_begin( - const struct linear_network * linear_network, - const u32 node) -{ - assert(node < tal_count(linear_network->node_adjacency_first_arc)); - return linear_network->node_adjacency_first_arc[node]; -} - -/* Helper function. - * Is this the end of the adjacency list. */ -static bool node_adjacency_end(const struct arc arc) -{ - return arc.idx == INVALID_INDEX; -} - -/* Helper function. - * Given node idx `node` and `arc`, returns the idx of the next arc whose tail is `node`. */ -static struct arc node_adjacency_next( - const struct linear_network *linear_network, - const struct arc arc) -{ - assert(arc.idx < tal_count(linear_network->node_adjacency_next_arc)); - return linear_network->node_adjacency_next_arc[arc.idx]; -} - -static bool channel_is_available(const struct gossmap_chan *c, int dir, - const struct gossmap *gossmap, - const bitmap *disabled) -{ - if (!gossmap_chan_set(c, dir)) - return false; - - const u32 chan_idx = gossmap_chan_idx(gossmap, c); - return !bitmap_test_bit(disabled, chan_idx * 2 + dir); -} - -// TODO(eduardo): unit test this -/* Split a directed channel into parts with linear cost function. */ -static bool linearize_channel(const struct pay_parameters *params, - const struct gossmap_chan *c, const int dir, - s64 *capacity, s64 *cost) -{ - struct chan_extra_half *extra_half = get_chan_extra_half_by_chan( - params->gossmap, - params->chan_extra_map, - c, - dir); - - if (!extra_half) { - return false; - } - - /* FIXME: this assertion has been reported to be triggered in issue - * #7535. A quick and dirty solution is to comment it and work-around - * this case. But in principle if we do things the right way we should - * not have htlc_total>known_max. The problem is likely to be - * asynchronous way in which reserved htlcs are removed and known_max is - * updated. */ - // assert( - // amount_msat_less_eq(extra_half->htlc_total, extra_half->known_max)); - assert( - amount_msat_less_eq(extra_half->known_min, extra_half->known_max)); - - s64 h = (extra_half->htlc_total.millisatoshis+999)/1000; /* Raw: linearize_channel */ - s64 a = extra_half->known_min.millisatoshis/1000, /* Raw: linearize_channel */ - b = 1 + extra_half->known_max.millisatoshis/1000; /* Raw: linearize_channel */ - - /* If HTLCs add up to more than the known_max it means we have a - * completely wrong knowledge. */ - // assert(ha it doesn't mean automatically that our - * known_min should have been updated, because we reserve this HTLC - * after sendpay behind the scenes it might happen that sendpay failed - * because of insufficient funds we haven't noticed yet. */ - // assert(h<=a); - - /* We reduce this channel capacity because HTLC are reserving liquidity. */ - a -= h; - b -= h; - a = MAX(a,0); - b = MAX(a+1,b); - - /* An extra bound on capacity, here we use it to reduce the flow such - * that it does not exceed htlcmax. */ - s64 cap_on_capacity = - gossmap_chan_htlc_max(c, dir).millisatoshis/1000; /* Raw: linearize_channel */ - - capacity[0]=a; - cost[0]=0; - assert(params->base_probability > 5e-7); - assert(params->base_probability <= 1.0); - const double base_prob_factor = -log(params->base_probability); - - for(size_t i=1;icap_fraction[i]*(b-a), cap_on_capacity); - cap_on_capacity -= capacity[i]; - assert(cap_on_capacity>=0); - - cost[i] = (params->cost_fraction[i]*1.0/(b-a) + base_prob_factor) - *params->amount.millisatoshis /* Raw: linearize_channel */ - *params->prob_cost_factor; - } - return true; -} - -static struct residual_network * -alloc_residual_network(const tal_t *ctx, const size_t max_num_nodes, - const size_t max_num_arcs) -{ - struct residual_network *residual_network = - tal(ctx, struct residual_network); - if (!residual_network) - goto function_fail; - - residual_network->cap = tal_arrz(residual_network, s64, max_num_arcs); - residual_network->cost = tal_arrz(residual_network, s64, max_num_arcs); - residual_network->potential = - tal_arrz(residual_network, s64, max_num_nodes); - - if (!residual_network->cap || !residual_network->cost || - !residual_network->potential) { - goto function_fail; - } - return residual_network; - - function_fail: - return tal_free(residual_network); -} - -static void init_residual_network( - const struct linear_network * linear_network, - struct residual_network* residual_network) -{ - const size_t max_num_arcs = linear_network->max_num_arcs; - const size_t max_num_nodes = linear_network->max_num_nodes; - - for(struct arc arc = {0};arc.idx < max_num_arcs; ++arc.idx) - { - if(arc_is_dual(arc)) - continue; - - struct arc dual = arc_dual(arc); - residual_network->cap[arc.idx]=linear_network->capacity[arc.idx]; - residual_network->cap[dual.idx]=0; - - residual_network->cost[arc.idx]=residual_network->cost[dual.idx]=0; - } - for(u32 i=0;ipotential[i]=0; - } -} - -static void combine_cost_function( - const struct linear_network* linear_network, - struct residual_network *residual_network, - s64 mu) -{ - for(struct arc arc = {0};arc.idx < linear_network->max_num_arcs; ++arc.idx) - { - if(arc_tail(linear_network,arc)==INVALID_INDEX) - continue; - - const s64 pcost = linear_network->arc_prob_cost[arc.idx], - fcost = linear_network->arc_fee_cost[arc.idx]; - - const s64 combined = pcost==INFINITE || fcost==INFINITE ? INFINITE : - mu*fcost + (MU_MAX-1-mu)*pcost; - - residual_network->cost[arc.idx] - = mu==0 ? pcost : - (mu==(MU_MAX-1) ? fcost : combined); - } -} - -static void linear_network_add_adjacenct_arc( - struct linear_network *linear_network, - const u32 node_idx, - const struct arc arc) -{ - assert(arc.idx < tal_count(linear_network->arc_tail_node)); - linear_network->arc_tail_node[arc.idx] = node_idx; - - assert(node_idx < tal_count(linear_network->node_adjacency_first_arc)); - const struct arc first_arc = linear_network->node_adjacency_first_arc[node_idx]; - - assert(arc.idx < tal_count(linear_network->node_adjacency_next_arc)); - linear_network->node_adjacency_next_arc[arc.idx]=first_arc; - - assert(node_idx < tal_count(linear_network->node_adjacency_first_arc)); - linear_network->node_adjacency_first_arc[node_idx]=arc; -} - -/* Get the fee cost associated to this directed channel. - * Cost is expressed as PPM of the payment. - * - * Choose and integer `c_fee` to linearize the following fee function - * - * fee_msat = base_msat + floor(millionths*x_msat / 10^6) - * - * into - * - * fee_microsat = c_fee * x_sat - * - * use `base_fee_penalty` to weight the base fee and `delay_feefactor` to - * weight the CLTV delay. - * */ -static s64 linear_fee_cost( - const struct gossmap_chan *c, - const int dir, - double base_fee_penalty, - double delay_feefactor) -{ - assert(c); - assert(dir==0 || dir==1); - s64 pfee = c->half[dir].proportional_fee, - bfee = c->half[dir].base_fee, - delay = c->half[dir].delay; - - return pfee + bfee* base_fee_penalty+ delay*delay_feefactor; -} - -static struct linear_network * -init_linear_network(const tal_t *ctx, const struct pay_parameters *params, - char **fail) -{ - tal_t *this_ctx = tal(ctx,tal_t); - - struct linear_network * linear_network = tal(ctx, struct linear_network); - if (!linear_network) { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of linear_network"); - goto function_fail; - } - - const size_t max_num_chans = gossmap_max_chan_idx(params->gossmap); - const size_t max_num_arcs = max_num_chans * ARCS_PER_CHANNEL; - const size_t max_num_nodes = gossmap_max_node_idx(params->gossmap); - - linear_network->max_num_arcs = max_num_arcs; - linear_network->max_num_nodes = max_num_nodes; - - linear_network->arc_tail_node = tal_arr(linear_network,u32,max_num_arcs); - if(!linear_network->arc_tail_node) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of arc_tail_node"); - goto function_fail; - } - for(size_t i=0;iarc_tail_node);++i) - linear_network->arc_tail_node[i]=INVALID_INDEX; - - linear_network->node_adjacency_next_arc = tal_arr(linear_network,struct arc,max_num_arcs); - if(!linear_network->node_adjacency_next_arc) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of node_adjacency_next_arc"); - goto function_fail; - } - for(size_t i=0;inode_adjacency_next_arc);++i) - linear_network->node_adjacency_next_arc[i].idx=INVALID_INDEX; - - linear_network->node_adjacency_first_arc = tal_arr(linear_network,struct arc,max_num_nodes); - if(!linear_network->node_adjacency_first_arc) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of node_adjacency_first_arc"); - goto function_fail; - } - for(size_t i=0;inode_adjacency_first_arc);++i) - linear_network->node_adjacency_first_arc[i].idx=INVALID_INDEX; - - linear_network->arc_prob_cost = tal_arr(linear_network,s64,max_num_arcs); - if(!linear_network->arc_prob_cost) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of arc_prob_cost"); - goto function_fail; - } - for(size_t i=0;iarc_prob_cost);++i) - linear_network->arc_prob_cost[i]=INFINITE; - - linear_network->arc_fee_cost = tal_arr(linear_network,s64,max_num_arcs); - if(!linear_network->arc_fee_cost) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of arc_fee_cost"); - goto function_fail; - } - for(size_t i=0;iarc_fee_cost);++i) - linear_network->arc_fee_cost[i]=INFINITE; - - linear_network->capacity = tal_arrz(linear_network,s64,max_num_arcs); - if(!linear_network->capacity) - { - if (fail) - *fail = tal_fmt(ctx, "bad allocation of capacity"); - goto function_fail; - } - - for(struct gossmap_node *node = gossmap_first_node(params->gossmap); - node; - node=gossmap_next_node(params->gossmap,node)) - { - const u32 node_id = gossmap_node_idx(params->gossmap,node); - - for(size_t j=0;jnum_chans;++j) - { - int half; - const struct gossmap_chan *c = gossmap_nth_chan(params->gossmap, - node, j, &half); - - if (!channel_is_available(c, half, params->gossmap, - params->disabled)) - continue; - - const u32 chan_id = gossmap_chan_idx(params->gossmap, c); - - const struct gossmap_node *next = gossmap_nth_node(params->gossmap, - c,!half); - - const u32 next_id = gossmap_node_idx(params->gossmap,next); - - if(node_id==next_id) - continue; - - // `cost` is the word normally used to denote cost per - // unit of flow in the context of MCF. - s64 prob_cost[CHANNEL_PARTS], capacity[CHANNEL_PARTS]; - - // split this channel direction to obtain the arcs - // that are outgoing to `node` - if (!linearize_channel(params, c, half, - capacity, prob_cost)) { - if(fail) - *fail = - tal_fmt(ctx, "linearize_channel failed"); - goto function_fail; - } - - const s64 fee_cost = linear_fee_cost(c,half, - params->base_fee_penalty, - params->delay_feefactor); - - // let's subscribe the 4 parts of the channel direction - // (c,half), the dual of these guys will be subscribed - // when the `i` hits the `next` node. - for(size_t k=0;kcapacity[arc.idx] = capacity[k]; - linear_network->arc_prob_cost[arc.idx] = prob_cost[k]; - - linear_network->arc_fee_cost[arc.idx] = fee_cost; - - // + the respective dual - struct arc dual = arc_dual(arc); - - linear_network_add_adjacenct_arc(linear_network,next_id,dual); - - linear_network->capacity[dual.idx] = 0; - linear_network->arc_prob_cost[dual.idx] = -prob_cost[k]; - - linear_network->arc_fee_cost[dual.idx] = -fee_cost; - } - } - } - - tal_free(this_ctx); - return linear_network; - - function_fail: - tal_free(this_ctx); - return tal_free(linear_network); -} - -/* Simple queue to traverse the network. */ -struct queue_data -{ - u32 idx; - struct lqueue_link ql; -}; - -// TODO(eduardo): unit test this -/* Finds an admissible path from source to target, traversing arcs in the - * residual network with capacity greater than 0. - * The path is encoded into prev, which contains the idx of the arcs that are - * traversed. */ -static bool -find_admissible_path(const tal_t *ctx, - const struct linear_network *linear_network, - const struct residual_network *residual_network, - const u32 source, const u32 target, struct arc *prev) -{ - tal_t *this_ctx = tal(ctx,tal_t); - - bool target_found = false; - - for(size_t i=0;iidx = source; - lqueue_enqueue(&myqueue,qdata); - - while(!lqueue_empty(&myqueue)) - { - qdata = lqueue_dequeue(&myqueue); - u32 cur = qdata->idx; - - tal_free(qdata); - - if(cur==target) - { - target_found = true; - break; - } - - for(struct arc arc = node_adjacency_begin(linear_network,cur); - !node_adjacency_end(arc); - arc = node_adjacency_next(linear_network,arc)) - { - // check if this arc is traversable - if(residual_network->cap[arc.idx] <= 0) - continue; - - u32 next = arc_head(linear_network,arc); - - assert(next < tal_count(prev)); - - // if that node has been seen previously - if(prev[next].idx!=INVALID_INDEX) - continue; - - prev[next] = arc; - - qdata = tal(this_ctx,struct queue_data); - qdata->idx = next; - lqueue_enqueue(&myqueue,qdata); - } - } - tal_free(this_ctx); - return target_found; -} - -/* Get the max amount of flow one can send from source to target along the path - * encoded in `prev`. */ -static s64 get_augmenting_flow( - const struct linear_network* linear_network, - const struct residual_network *residual_network, - const u32 source, - const u32 target, - const struct arc *prev) -{ - s64 flow = INFINITE; - - u32 cur = target; - while(cur!=source) - { - assert(curcap[arc.idx]); - - // we are traversing in the opposite direction to the flow, - // hence the next node is at the tail of the arc. - cur = arc_tail(linear_network,arc); - } - - assert(flow0); - return flow; -} - -/* Augment a `flow` amount along the path defined by `prev`.*/ -static void augment_flow( - const struct linear_network *linear_network, - struct residual_network *residual_network, - const u32 source, - const u32 target, - const struct arc *prev, - s64 flow) -{ - u32 cur = target; - - while(cur!=source) - { - assert(cur < tal_count(prev)); - const struct arc arc = prev[cur]; - const struct arc dual = arc_dual(arc); - - assert(arc.idx < tal_count(residual_network->cap)); - assert(dual.idx < tal_count(residual_network->cap)); - - residual_network->cap[arc.idx] -= flow; - residual_network->cap[dual.idx] += flow; - - assert(residual_network->cap[arc.idx] >=0 ); - - // we are traversing in the opposite direction to the flow, - // hence the next node is at the tail of the arc. - cur = arc_tail(linear_network,arc); - } -} - - -// TODO(eduardo): unit test this -/* Finds any flow that satisfy the capacity and balance constraints of the - * uncertainty network. For the balance function condition we have: - * balance(source) = - balance(target) = amount - * balance(node) = 0 , for every other node - * Returns an error code if no feasible flow is found. - * - * 13/04/2023 This implementation uses a simple augmenting path approach. - * */ -static bool find_feasible_flow(const tal_t *ctx, - const struct linear_network *linear_network, - struct residual_network *residual_network, - const u32 source, const u32 target, s64 amount, - char **fail) -{ - assert(amount>=0); - tal_t *this_ctx = tal(ctx,tal_t); - - /* path information - * prev: is the id of the arc that lead to the node. */ - struct arc *prev = tal_arr(this_ctx,struct arc,linear_network->max_num_nodes); - if(!prev) - { - if(fail) - *fail = tal_fmt(ctx, "bad allocation of prev"); - goto function_fail; - } - - while(amount>0) - { - // find a path from source to target - if (!find_admissible_path(this_ctx, linear_network, - residual_network, source, target, - prev)) - - { - if(fail) - *fail = tal_fmt(ctx, "find_admissible_path failed"); - goto function_fail; - } - - // traverse the path and see how much flow we can send - s64 delta = get_augmenting_flow(linear_network, - residual_network, - source,target,prev); - - // commit that flow to the path - delta = MIN(amount,delta); - assert(delta>0 && delta<=amount); - - augment_flow(linear_network,residual_network,source,target,prev,delta); - amount -= delta; - } - - tal_free(this_ctx); - return true; - - function_fail: - tal_free(this_ctx); - return false; -} - -// TODO(eduardo): unit test this -/* Similar to `find_admissible_path` but use Dijkstra to optimize the distance - * label. Stops when the target is hit. */ -static bool find_optimal_path(const tal_t *ctx, struct dijkstra *dijkstra, - const struct linear_network *linear_network, - const struct residual_network *residual_network, - const u32 source, const u32 target, - struct arc *prev, char **fail) -{ - tal_t *this_ctx = tal(ctx,tal_t); - bool target_found = false; - - bitmap *visited = tal_arrz(this_ctx, bitmap, - BITMAP_NWORDS(linear_network->max_num_nodes)); - - if(!visited) - { - if(fail) - *fail = tal_fmt(ctx, "bad allocation of visited"); - goto finish; - } - - - for(size_t i=0;icap[arc.idx] <= 0) - continue; - - u32 next = arc_head(linear_network,arc); - - s64 cij = residual_network->cost[arc.idx] - - residual_network->potential[cur] - + residual_network->potential[next]; - - // Dijkstra only works with non-negative weights - assert(cij>=0); - - if(distance[next]<=distance[cur]+cij) - continue; - - dijkstra_update(dijkstra,next,distance[cur]+cij); - prev[next]=arc; - } - } - - if (!target_found && fail) - *fail = tal_fmt(ctx, "no route to destination"); - - finish: - tal_free(this_ctx); - return target_found; -} - -/* Set zero flow in the residual network. */ -static void zero_flow( - const struct linear_network *linear_network, - struct residual_network *residual_network) -{ - for(u32 node=0;nodemax_num_nodes;++node) - { - residual_network->potential[node]=0; - for(struct arc arc=node_adjacency_begin(linear_network,node); - !node_adjacency_end(arc); - arc = node_adjacency_next(linear_network,arc)) - { - if(arc_is_dual(arc))continue; - - struct arc dual = arc_dual(arc); - - residual_network->cap[arc.idx] = linear_network->capacity[arc.idx]; - residual_network->cap[dual.idx] = 0; - } - } -} - -// TODO(eduardo): unit test this -/* Starting from a feasible flow (satisfies the balance and capacity - * constraints), find a solution that minimizes the network->cost function. - * - * TODO(eduardo) The MCF must be called several times until we get a good - * compromise between fees and probabilities. Instead of re-computing the MCF at - * each step, we might use the previous flow result, which is not optimal in the - * current iteration but I might be not too far from the truth. - * It comes to mind to use cycle cancelling. */ -static bool optimize_mcf(const tal_t *ctx, struct dijkstra *dijkstra, - const struct linear_network *linear_network, - struct residual_network *residual_network, - const u32 source, const u32 target, const s64 amount, - char **fail) -{ - assert(amount>=0); - tal_t *this_ctx = tal(ctx,tal_t); - char *errmsg; - - zero_flow(linear_network,residual_network); - struct arc *prev = tal_arr(this_ctx,struct arc,linear_network->max_num_nodes); - - const s64 *const distance = dijkstra_distance_data(dijkstra); - - s64 remaining_amount = amount; - - while(remaining_amount>0) - { - if (!find_optimal_path(this_ctx, dijkstra, linear_network, - residual_network, source, target, prev, - &errmsg)) { - if (fail) - *fail = - tal_fmt(ctx, "find_optimal_path failed: %s", - errmsg); - goto function_fail; - } - - // traverse the path and see how much flow we can send - s64 delta = get_augmenting_flow(linear_network,residual_network,source,target,prev); - - // commit that flow to the path - delta = MIN(remaining_amount,delta); - assert(delta>0 && delta<=remaining_amount); - - augment_flow(linear_network,residual_network,source,target,prev,delta); - remaining_amount -= delta; - - // update potentials - for(u32 n=0;nmax_num_nodes;++n) - { - // see page 323 of Ahuja-Magnanti-Orlin - residual_network->potential[n] -= MIN(distance[target],distance[n]); - - /* Notice: - * if node i is permanently labeled we have - * d_i<=d_t - * which implies - * MIN(d_i,d_t) = d_i - * if node i is temporarily labeled we have - * d_i>=d_t - * which implies - * MIN(d_i,d_t) = d_t - * */ - } - } - tal_free(this_ctx); - return true; - - function_fail: - - tal_free(this_ctx); - return false; -} - -// flow on directed channels -struct chan_flow -{ - s64 half[2]; -}; - -/* Search in the network a path of positive flow until we reach a node with - * positive balance. */ -static u32 find_positive_balance( - const struct gossmap *gossmap, - const bitmap *disabled, - const struct chan_flow *chan_flow, - const u32 start_idx, - const s64 *balance, - - const struct gossmap_chan **prev_chan, - int *prev_dir, - u32 *prev_idx) -{ - u32 final_idx = start_idx; - - /* TODO(eduardo) - * This is guaranteed to halt if there are no directed flow cycles. - * There souldn't be any. In fact if cost is strickly - * positive, then flow cycles do not exist at all in the - * MCF solution. But if cost is allowed to be zero for - * some arcs, then we might have flow cyles in the final - * solution. We must somehow ensure that the MCF - * algorithm does not come up with spurious flow cycles. */ - while(balance[final_idx]<=0) - { - // printf("%s: node = %d\n",__func__,final_idx); - u32 updated_idx=INVALID_INDEX; - struct gossmap_node *cur - = gossmap_node_byidx(gossmap,final_idx); - - for(size_t i=0;inum_chans;++i) - { - int dir; - const struct gossmap_chan *c - = gossmap_nth_chan(gossmap, - cur,i,&dir); - - if (!channel_is_available(c, dir, gossmap, disabled)) - continue; - - const u32 c_idx = gossmap_chan_idx(gossmap,c); - - // follow the flow - if(chan_flow[c_idx].half[dir]>0) - { - const struct gossmap_node *next - = gossmap_nth_node(gossmap,c,!dir); - u32 next_idx = gossmap_node_idx(gossmap,next); - - - prev_dir[next_idx] = dir; - prev_chan[next_idx] = c; - prev_idx[next_idx] = final_idx; - - updated_idx = next_idx; - break; - } - } - - assert(updated_idx!=INVALID_INDEX); - assert(updated_idx!=final_idx); - - final_idx = updated_idx; - } - return final_idx; -} - -struct list_data -{ - struct list_node list; - struct flow *flow_path; -}; - -static inline uint64_t pseudorand_interval(uint64_t a, uint64_t b) -{ - if (a == b) - return b; - assert(b > a); - return a + pseudorand(b - a); -} - -/* Given a flow in the residual network, build a set of payment flows in the - * gossmap that corresponds to this flow. */ -static struct flow ** -get_flow_paths(const tal_t *ctx, const struct gossmap *gossmap, - const bitmap *disabled, - - // chan_extra_map cannot be const because we use it to keep - // track of htlcs and in_flight sats. - struct chan_extra_map *chan_extra_map, - const struct linear_network *linear_network, - const struct residual_network *residual_network, - - // how many msats in excess we paid for not having msat accuracy - // in the MCF solver - struct amount_msat excess, - const double base_probability, - - // error message - char **fail) -{ - tal_t *this_ctx = tal(ctx,tal_t); - struct flow **flows = tal_arr(ctx,struct flow*,0); - - assert(amount_msat_less(excess, AMOUNT_MSAT(1000))); - - const size_t max_num_chans = gossmap_max_chan_idx(gossmap); - struct chan_flow *chan_flow = tal_arrz(this_ctx,struct chan_flow,max_num_chans); - - const size_t max_num_nodes = gossmap_max_node_idx(gossmap); - s64 *balance = tal_arrz(this_ctx,s64,max_num_nodes); - - const struct gossmap_chan **prev_chan - = tal_arr(this_ctx,const struct gossmap_chan *,max_num_nodes); - - - int *prev_dir = tal_arr(this_ctx,int,max_num_nodes); - u32 *prev_idx = tal_arr(this_ctx,u32,max_num_nodes); - - if (!chan_flow || !balance || !prev_chan || !prev_idx || !prev_dir) { - if (fail) - *fail = tal_fmt(ctx, "bad allocation"); - goto function_fail; - } - - // Convert the arc based residual network flow into a flow in the - // directed channel network. - // Compute balance on the nodes. - for(u32 n = 0;n htlc_max) { - /* htlc_min is too big or htlc_max is too small, - * we cannot send `delta` along this route. - * - * FIXME: We try anyways because failing - * channels will be blacklisted downstream. */ - htlc_min = 0; - } - - /* If we divide this route into different flows make it - * random to avoid routing nodes making correlations. */ - if (delta > htlc_max) { - // FIXME: choosing a number in the range - // [htlc_min, htlc_max] or - // [0.5 htlc_max, htlc_max] - // The choice of the fraction was completely - // arbitrary. - delta = pseudorand_interval( - MAX(htlc_min, (htlc_max * 50) / 100), - htlc_max); - } - - struct flow *fp = tal(this_ctx,struct flow); - fp->path = tal_arr(fp,const struct gossmap_chan *,length); - fp->dirs = tal_arr(fp,int,length); - - balance[node_idx] += delta; - balance[final_idx]-= delta; - - // walk backwards, substract flow - for(u32 cur_idx = final_idx; - cur_idx!=node_idx; - cur_idx=prev_idx[cur_idx]) - { - assert(cur_idx!=INVALID_INDEX); - - const int dir = prev_dir[cur_idx]; - const struct gossmap_chan *const c = prev_chan[cur_idx]; - const u32 c_idx = gossmap_chan_idx(gossmap,c); - - length--; - fp->path[length]=c; - fp->dirs[length]=dir; - // notice: fp->path and fp->dirs have the path - // in the correct order. - - chan_flow[c_idx].half[prev_dir[cur_idx]]-=delta; - } - - assert(delta>0); - - // substract the excess of msats for not having msat - // accuracy - struct amount_msat delivered = amount_msat(delta*1000); - if (!amount_msat_sub(&delivered, delivered, excess)) { - if (fail) - *fail = tal_fmt( - ctx, "unable to substract excess"); - goto function_fail; - } - excess = amount_msat(0); - fp->amount = delivered; - - fp->success_prob = - flow_probability(fp, gossmap, chan_extra_map, false) - * pow(base_probability, tal_count(fp->path)); - if (fp->success_prob < 0) { - if (fail) - *fail = - tal_fmt(ctx, "failed to compute " - "flow probability"); - goto function_fail; - } - - // add fp to flows - tal_arr_expand(&flows, fp); - } - } - - /* Establish ownership. */ - for(size_t i=0;i= min_probability; - bool B_prob_pass = B_prob >= min_probability; - - // all bounds are met - if(A_fee_pass && B_fee_pass && A_prob_pass && B_prob_pass) - { - // prefer lower fees - goto fees_or_prob; - } - - // prefer the solution that satisfies both bounds - if(!(A_fee_pass && A_prob_pass) && (B_fee_pass && B_prob_pass)) - { - return false; - } - // prefer the solution that satisfies both bounds - if((A_fee_pass && A_prob_pass) && !(B_fee_pass && B_prob_pass)) - { - return true; - } - - // no solution satisfies both bounds - - // bound on fee is met - if(A_fee_pass && B_fee_pass) - { - // pick the highest prob. - return A_prob > B_prob; - } - - // bound on prob. is met - if(A_prob_pass && B_prob_pass) - { - goto fees_or_prob; - } - - // prefer the solution that satisfies the bound on fees - if(A_fee_pass && !B_fee_pass) - { - return true; - } - if(B_fee_pass && !A_fee_pass) - { - return false; - } - - // none of them satisfy the fee bound - - // prefer the solution that satisfies the bound on prob. - if(A_prob_pass && !B_prob_pass) - { - return true; - } - if(B_prob_pass && !A_prob_pass) - { - return true; - } - - // no bound whatsoever is satisfied - - fees_or_prob: - - // fees are the same, wins the highest prob. - if(amount_msat_eq(A_fee,B_fee)) - { - return A_prob > B_prob; - } - - // go for fees - return amount_msat_less_eq(A_fee,B_fee); -} - -/* Channels that are not in the chan_extra_map should be disabled. */ -static bool check_disabled(const bitmap *disabled, - const struct gossmap *gossmap, - const struct chan_extra_map *chan_extra_map) -{ - assert(disabled); - assert(gossmap); - assert(chan_extra_map); - - if (tal_bytelen(disabled) != - 2 * bitmap_sizeof(gossmap_max_chan_idx(gossmap))) - return false; - - for (struct gossmap_chan *chan = gossmap_first_chan(gossmap); chan; - chan = gossmap_next_chan(gossmap, chan)) { - const u32 chan_idx = gossmap_chan_idx(gossmap, chan); - /* If both directions are disabled anyways, there is no need to - * fetch their information in chan_extra. */ - if (bitmap_test_bit(disabled, chan_idx * 2 + 0) && - bitmap_test_bit(disabled, chan_idx * 2 + 1)) - continue; - - struct short_channel_id scid = gossmap_chan_scid(gossmap, chan); - struct chan_extra *ce = - chan_extra_map_get(chan_extra_map, scid); - if (!ce) - return false; - } - return true; -} - -// TODO(eduardo): choose some default values for the minflow parameters -/* eduardo: I think it should be clear that this module deals with linear - * flows, ie. base fees are not considered. Hence a flow along a path is - * described with a sequence of directed channels and one amount. - * In the `pay_flow` module there are dedicated routes to compute the actual - * amount to be forward on each hop. - * - * TODO(eduardo): notice that we don't pay fees to forward payments with local - * channels and we can tell with absolute certainty the liquidity on them. - * Check that local channels have fee costs = 0 and bounds with certainty (min=max). */ -// TODO(eduardo): we should LOG_DBG the process of finding the MCF while -// adjusting the frugality factor. -struct flow **minflow(const tal_t *ctx, struct gossmap *gossmap, - const struct gossmap_node *source, - const struct gossmap_node *target, - struct chan_extra_map *chan_extra_map, - const bitmap *disabled, struct amount_msat amount, - struct amount_msat max_fee, double min_probability, - double base_probability, - double delay_feefactor, double base_fee_penalty, - u32 prob_cost_factor, char **fail) -{ - tal_t *this_ctx = tal(ctx,tal_t); - char *errmsg; - struct flow **best_flow_paths = NULL; - - struct pay_parameters *params = tal(this_ctx,struct pay_parameters); - struct dijkstra *dijkstra; - - params->gossmap = gossmap; - params->source = source; - params->target = target; - params->chan_extra_map = chan_extra_map; - - params->disabled = disabled; - - if (!check_disabled(disabled, gossmap, chan_extra_map)) { - if (fail) - *fail = tal_fmt(ctx, "Invalid disabled bitmap."); - goto function_fail; - } - - params->amount = amount; - - // template the channel partition into linear arcs - params->cap_fraction[0]=0; - params->cost_fraction[0]=0; - for(size_t i =1;icap_fraction[i]=CHANNEL_PIVOTS[i]-CHANNEL_PIVOTS[i-1]; - params->cost_fraction[i]= - log((1-CHANNEL_PIVOTS[i-1])/(1-CHANNEL_PIVOTS[i])) - /params->cap_fraction[i]; - - // printf("channel part: %ld, fraction: %lf, cost_fraction: %lf\n", - // i,params->cap_fraction[i],params->cost_fraction[i]); - } - - params->max_fee = max_fee; - params->min_probability = min_probability; - params->delay_feefactor = delay_feefactor; - params->base_fee_penalty = base_fee_penalty; - params->prob_cost_factor = prob_cost_factor; - params->base_probability = base_probability; - - // build the uncertainty network with linearization and residual arcs - struct linear_network *linear_network= init_linear_network(this_ctx, params, &errmsg); - if (!linear_network) { - if(fail) - *fail = tal_fmt(ctx, "init_linear_network failed: %s", - errmsg); - goto function_fail; - } - - struct residual_network *residual_network = - alloc_residual_network(this_ctx, linear_network->max_num_nodes, - linear_network->max_num_arcs); - if (!residual_network) { - if (fail) - *fail = tal_fmt( - ctx, "failed to allocate the residual network"); - goto function_fail; - } - - dijkstra = dijkstra_new(this_ctx, gossmap_max_node_idx(params->gossmap)); - - const u32 target_idx = gossmap_node_idx(params->gossmap,target); - const u32 source_idx = gossmap_node_idx(params->gossmap,source); - - init_residual_network(linear_network,residual_network); - - struct amount_msat best_fee; - double best_prob_success; - - /* TODO(eduardo): - * Some MCF algorithms' performance depend on the size of maxflow. If we - * were to work in units of msats we 1. risking overflow when computing - * costs and 2. we risk a performance overhead for no good reason. - * - * Working in units of sats was my first choice, but maybe working in - * units of 10, or 100 sats could be even better. - * - * IDEA: define the size of our precision as some parameter got at - * runtime that depends on the size of the payment and adjust the MCF - * accordingly. - * For example if we are trying to pay 1M sats our precision could be - * set to 1000sat, then channels that had capacity for 3M sats become 3k - * flow units. */ - const u64 pay_amount_msats = params->amount.millisatoshis % 1000; /* Raw: minflow */ - const u64 pay_amount_sats = params->amount.millisatoshis/1000 /* Raw: minflow */ - + (pay_amount_msats ? 1 : 0); - const struct amount_msat excess - = amount_msat(pay_amount_msats ? 1000 - pay_amount_msats : 0); - - if (!find_feasible_flow(this_ctx, linear_network, residual_network, - source_idx, target_idx, pay_amount_sats, - &errmsg)) { - // there is no flow that satisfy the constraints, we stop here - if(fail) - *fail = tal_fmt(ctx, "failed to find a feasible flow: %s", errmsg); - goto function_fail; - } - - // first flow found - best_flow_paths = get_flow_paths( - this_ctx, params->gossmap, params->disabled, params->chan_extra_map, - linear_network, residual_network, excess, params->base_probability, - &errmsg); - if (!best_flow_paths) { - if (fail) - *fail = - tal_fmt(ctx, "get_flow_paths failed: %s", errmsg); - goto function_fail; - } - best_flow_paths = tal_steal(ctx, best_flow_paths); - - best_prob_success = - flowset_probability(this_ctx, best_flow_paths, params->gossmap, - params->chan_extra_map, false, &errmsg) - * pow(params->base_probability, flowset_size(best_flow_paths)); - if (best_prob_success < 0) { - if (fail) - *fail = tal_fmt( - ctx, - "flowset_probability failed on MaxFlow phase: %s", - errmsg); - goto function_fail; - } - if (!flowset_fee(&best_fee, best_flow_paths)) { - if (fail) - *fail = - tal_fmt(ctx, "flowset_fee failed on MaxFlow phase"); - goto function_fail; - } - - // binary search for a value of `mu` that fits our fee and prob. - // constraints. - // mu=0 corresponds to only probabilities - // mu=MU_MAX-1 corresponds to only fee - s64 mu_left = 0, mu_right = MU_MAX; - while(mu_leftgossmap, params->disabled, - params->chan_extra_map, linear_network, - residual_network, excess, params->base_probability, - &errmsg); - if(!flow_paths) - { - // get_flow_paths doesn't fail unless there is a bug. - if (fail) - *fail = - tal_fmt(ctx, "get_flow_paths failed: %s", errmsg); - goto function_fail; - } - - double prob_success = - flowset_probability(this_ctx, flow_paths, params->gossmap, - params->chan_extra_map, false, &errmsg) - * pow(params->base_probability, flowset_size(flow_paths)); - if (prob_success < 0) { - // flowset_probability doesn't fail unless there is a bug. - if (fail) - *fail = - tal_fmt(ctx, "flowset_probability: %s", errmsg); - goto function_fail; - } - - struct amount_msat fee; - if (!flowset_fee(&fee, flow_paths)) { - // flowset_fee doesn't fail unless there is a bug. - if (fail) - *fail = - tal_fmt(ctx, "flowset_fee failed evaluating MinCostFlow candidate"); - goto function_fail; - } - - /* Is this better than the previous one? */ - if(!best_flow_paths || - is_better(params->max_fee,params->min_probability, - fee,prob_success, - best_fee, best_prob_success)) - { - - best_flow_paths = tal_free(best_flow_paths); - best_flow_paths = tal_steal(ctx,flow_paths); - - best_fee = fee; - best_prob_success=prob_success; - flow_paths = NULL; - } - /* I don't like this candidate. */ - else - tal_free(flow_paths); - - if(amount_msat_greater(fee,params->max_fee)) - { - // too expensive - mu_left = mu+1; - - }else if(prob_success < params->min_probability) - { - // too unlikely - mu_right = mu; - }else - { - // with mu constraints are satisfied, now let's optimize - // the fees - mu_left = mu+1; - } - } - - tal_free(this_ctx); - return best_flow_paths; - - function_fail: - tal_free(this_ctx); - return tal_free(best_flow_paths); -} - diff --git a/plugins/renepay/mcf.h b/plugins/renepay/mcf.h deleted file mode 100644 index 88f368ce80b7..000000000000 --- a/plugins/renepay/mcf.h +++ /dev/null @@ -1,67 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_MCF_H -#define LIGHTNING_PLUGINS_RENEPAY_MCF_H -#include "config.h" -#include -#include -#include - -struct chan_extra_map; - -enum { - RENEPAY_ERR_OK, - // No feasible flow found, either there is not enough known liquidity (or capacity) - // in the channels to complete the payment - RENEPAY_ERR_NOFEASIBLEFLOW, - // There is at least one feasible flow, but the the cheapest solution that we - // found is too expensive, we return the result anyways. - RENEPAY_ERR_NOCHEAPFLOW -}; - - - -/** - * optimal_payment_flow - API for min cost flow function(s). - * @ctx: context to allocate returned flows from - * @gossmap: the gossip map - * @source: the source to start from - * @target: the target to pay - * @chan_extra_map: hashtable of extra per-channel information - * @disabled: NULL, or a bitmap by channel index of channels not to use. - * @amount: the amount we want to reach @target - * - * @max_fee: the maximum allowed in fees - * - * @min_probability: minimum probability accepted - * - * @delay_feefactor converts 1 block delay into msat, as if it were an additional - * fee. So if a CLTV delay on a node is 5 blocks, that's treated as if it - * were a fee of 5 * @delay_feefactor. - * - * @base_fee_penalty: factor to compute additional proportional cost from each - * unit of base fee. So #base_fee_penalty will be added to the effective - * proportional fee for each msat of base fee. - * - * effective_ppm = proportional_fee + base_fee_msat * base_fee_penalty - * - * @prob_cost_factor: factor used to monetize the probability cost. It is - * defined as the number of ppm (parts per million of the total payment) we - * are willing to pay to improve the probability of success by 0.1%. - * - * k_microsat = floor(1000*prob_cost_factor * payment_sat) - * - * this k is used to compute a prob. cost in units of microsats - * - * cost(payment) = - k_microsat * log Prob(payment) - * - * Return a series of subflows which deliver amount to target, or NULL. - */ -struct flow **minflow(const tal_t *ctx, struct gossmap *gossmap, - const struct gossmap_node *source, - const struct gossmap_node *target, - struct chan_extra_map *chan_extra_map, - const bitmap *disabled, struct amount_msat amount, - struct amount_msat max_fee, double min_probability, - double base_probability, - double delay_feefactor, double base_fee_penalty, - u32 prob_cost_factor, char **fail); -#endif /* LIGHTNING_PLUGINS_RENEPAY_MCF_H */ diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 5c13205de080..1fa6895b9ada 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -7,16 +7,18 @@ #include #include #include -#include #include #include #include #include -#include #include #include #include +#define MAX(x, y) (((x) > (y)) ? (x) : (y)) +#define MIN(x, y) (((x) < (y)) ? (x) : (y)) +#define MAX_CAPACITY (AMOUNT_MSAT(21000000 * MSAT_PER_BTC)) + #define OP_NULL NULL #define OP_CALL (void *)1 #define OP_IF (void *)2 @@ -260,147 +262,6 @@ static struct command_result *initial_sanity_checks_cb(struct payment *payment) REGISTER_PAYMENT_MODIFIER(initial_sanity_checks, initial_sanity_checks_cb); -/***************************************************************************** - * getmychannels - * - * Calls listpeerchannels to get and updated state of the local channels. - */ - -static void -uncertainty_update_from_listpeerchannels(struct uncertainty *uncertainty, - const struct short_channel_id_dir *scidd, - struct amount_msat max, bool enabled, - const char *buf, const jsmntok_t *chantok) -{ - if (!enabled) - return; - - struct amount_msat capacity, min, gap; - const char *errmsg = json_scan(tmpctx, buf, chantok, "{total_msat:%}", - JSON_SCAN(json_to_msat, &capacity)); - if (errmsg) - goto error; - - if (!uncertainty_add_channel(pay_plugin->uncertainty, scidd->scid, - capacity)) { - errmsg = tal_fmt( - tmpctx, - "Unable to find/add scid=%s in the uncertainty network", - fmt_short_channel_id(tmpctx, scidd->scid)); - goto error; - } - - if (!amount_msat_scale(&gap, capacity, 0.1) || - !amount_msat_sub(&min, max, gap)) - min = AMOUNT_MSAT(0); - - // FIXME this does not include pending HTLC of ongoing payments! - /* Allow a gap between min and max so that we don't use up all of our - * channels' spendable sats and avoid our local error: - * WIRE_TEMPORARY_CHANNEL_FAILURE: Capacity exceeded - HTLC fee: Xsat - * - * */ - if (!uncertainty_set_liquidity(pay_plugin->uncertainty, scidd, min, - max)) { - errmsg = tal_fmt( - tmpctx, - "Unable to set liquidity to channel scidd=%s in the " - "uncertainty network.", - fmt_short_channel_id_dir(tmpctx, scidd)); - goto error; - } - return; - -error: - plugin_log( - pay_plugin->plugin, LOG_UNUSUAL, - "Failed to update local channel %s from listpeerchannels rpc: %s", - fmt_short_channel_id(tmpctx, scidd->scid), - errmsg); -} - -static void gossmod_cb(struct gossmap_localmods *mods, - const struct node_id *self, - const struct node_id *peer, - const struct short_channel_id_dir *scidd, - struct amount_msat capacity_msat, - struct amount_msat htlcmin, - struct amount_msat htlcmax, - struct amount_msat spendable, - struct amount_msat max_total_htlc, - struct amount_msat fee_base, - u32 fee_proportional, - u16 cltv_delta, - bool enabled, - const char *buf, - const jsmntok_t *chantok, - struct payment *payment) -{ - struct amount_msat min, max; - - if (scidd->dir == node_id_idx(self, peer)) { - /* local channels can send up to what's spendable but there is a - * limit also the total amount in-flight */ - min = AMOUNT_MSAT(0); - max = amount_msat_min(spendable, max_total_htlc); - } else { - /* remote channels can send up no more than spendable */ - min = htlcmin; - max = amount_msat_min(spendable, htlcmax); - } - - /* FIXME: features? */ - gossmap_local_addchan(mods, self, peer, scidd->scid, capacity_msat, - NULL); - gossmap_local_updatechan(mods, scidd, - &enabled, - &min, &max, - &fee_base, &fee_proportional, &cltv_delta); - - /* Is it disabled? */ - if (!enabled) - payment_disable_chan(payment, *scidd, LOG_DBG, - "listpeerchannels says not enabled"); - - /* Also update the uncertainty network by fixing the liquidity of the - * outgoing channel. If we try to set the liquidity of the incoming - * channel as well we would have conflicting information because our - * knowledge model does not take into account channel reserves. */ - if (scidd->dir == node_id_idx(self, peer)) - uncertainty_update_from_listpeerchannels( - pay_plugin->uncertainty, scidd, max, enabled, buf, chantok); -} - -static struct command_result *getmychannels_done(struct command *cmd, - const char *method UNUSED, - const char *buf, - const jsmntok_t *result, - struct payment *payment) -{ - // FIXME: should local gossmods be global (ie. member of pay_plugin) or - // local (ie. member of payment)? - payment->local_gossmods = gossmods_from_listpeerchannels( - payment, &pay_plugin->my_id, buf, result, /* zero_rates = */ true, - gossmod_cb, payment); - - return payment_continue(payment); -} - -static struct command_result *getmychannels_cb(struct payment *payment) -{ - struct command *cmd = payment_command(payment); - if (!cmd) - plugin_err(pay_plugin->plugin, - "getmychannels_pay_mod: cannot get a valid cmd."); - - struct out_req *req = jsonrpc_request_start( - cmd, "listpeerchannels", getmychannels_done, - payment_rpc_failure, payment); - return send_outreq(req); -} - -REGISTER_PAYMENT_MODIFIER(getmychannels, getmychannels_cb); - /***************************************************************************** * refreshgossmap * @@ -411,24 +272,7 @@ static struct command_result *refreshgossmap_cb(struct payment *payment) { assert(pay_plugin->gossmap); // gossmap must be already initialized assert(payment); - assert(payment->local_gossmods); - - bool gossmap_changed = gossmap_refresh(pay_plugin->gossmap); - - if (gossmap_changed) { - gossmap_apply_localmods(pay_plugin->gossmap, - payment->local_gossmods); - int skipped_count = uncertainty_update(pay_plugin->uncertainty, - pay_plugin->gossmap); - gossmap_remove_localmods(pay_plugin->gossmap, - payment->local_gossmods); - if (skipped_count) - plugin_log( - pay_plugin->plugin, LOG_UNUSUAL, - "%s: uncertainty was updated but %d channels have " - "been ignored.", - __func__, skipped_count); - } + gossmap_refresh(pay_plugin->gossmap); return payment_continue(payment); } @@ -1351,24 +1195,23 @@ void *payment_virtual_program[] = { /*0*/ OP_CALL, &previoussuccess_pay_mod, /*2*/ OP_CALL, &initpaymentlayer_pay_mod, /*4*/ OP_CALL, &knowledgerelax_pay_mod, - /*6*/ OP_CALL, &getmychannels_pay_mod, - /*8*/ OP_CALL, &refreshgossmap_pay_mod, - /*10*/ OP_CALL, &routehints_pay_mod, - /*12*/ OP_CALL, &blindedhints_pay_mod, - /*14*/OP_CALL, &channelfilter_pay_mod, + /*6*/ OP_CALL, &refreshgossmap_pay_mod, + /*8*/ OP_CALL, &routehints_pay_mod, + /*10*/ OP_CALL, &blindedhints_pay_mod, + /*12*/OP_CALL, &channelfilter_pay_mod, // TODO shadow_additions /* do */ - /*16*/ OP_CALL, &pendingsendpays_pay_mod, - /*18*/ OP_CALL, &checktimeout_pay_mod, - /*20*/ OP_CALL, &refreshgossmap_pay_mod, - /*22*/ OP_CALL, &getroutes_pay_mod, - /*24*/ OP_CALL, &send_routes_pay_mod, + /*14*/ OP_CALL, &pendingsendpays_pay_mod, + /*16*/ OP_CALL, &checktimeout_pay_mod, + /*18*/ OP_CALL, &refreshgossmap_pay_mod, + /*20*/ OP_CALL, &getroutes_pay_mod, + /*22*/ OP_CALL, &send_routes_pay_mod, /*do*/ - /*26*/ OP_CALL, &sleep_pay_mod, - /*28*/ OP_CALL, &collect_results_pay_mod, + /*24*/ OP_CALL, &sleep_pay_mod, + /*26*/ OP_CALL, &collect_results_pay_mod, /*while*/ - /*30*/ OP_IF, ¬haveresults_pay_cond, (void *)26, + /*28*/ OP_IF, ¬haveresults_pay_cond, (void *)24, /* while */ - /*33*/ OP_IF, &retry_pay_cond, (void *)16, - /*36*/ OP_CALL, &end_pay_mod, /* safety net, default failure if reached */ - /*38*/ NULL}; + /*31*/ OP_IF, &retry_pay_cond, (void *)14, + /*34*/ OP_CALL, &end_pay_mod, /* safety net, default failure if reached */ + /*36*/ NULL}; diff --git a/plugins/renepay/payment.c b/plugins/renepay/payment.c index f33db8317514..a072f68efb39 100644 --- a/plugins/renepay/payment.c +++ b/plugins/renepay/payment.c @@ -38,8 +38,6 @@ struct payment *payment_new(const tal_t *ctx, const struct sha256 *payment_hash, p->exec_state = INVALID_STATE; p->next_partid = 1; p->cmd_array = tal_arr(p, struct command *, 0); - p->local_gossmods = NULL; - p->disabledmap = disabledmap_new(p); p->have_results = false; p->retry = false; p->waitresult_timer = NULL; @@ -53,13 +51,7 @@ static void payment_cleanup(struct payment *p) { p->exec_state = INVALID_STATE; tal_resize(&p->cmd_array, 0); - p->local_gossmods = tal_free(p->local_gossmods); - /* FIXME: for optimization, a cleanup should prune all the data that has - * no use after a payent is completed. The entire disablemap structure - * is no longer needed, hence I guess we should free it not just reset - * it. */ - disabledmap_reset(p->disabledmap); p->waitresult_timer = tal_free(p->waitresult_timer); routetracker_cleanup(p->routetracker); @@ -92,7 +84,6 @@ bool payment_refresh(struct payment *p){ assert(p->cmd_array); assert(tal_count(p->cmd_array) == 0); - p->local_gossmods = tal_free(p->local_gossmods); p->have_results = false; p->retry = false; p->waitresult_timer = tal_free(p->waitresult_timer); @@ -118,6 +109,7 @@ bool payment_set_constraints( bool use_shadow, const struct route_exclusion **exclusions) { + // FIXME: add exclusions to a layer assert(p); struct payment_info *pinfo = &p->payment_info; @@ -137,17 +129,6 @@ bool payment_set_constraints( pinfo->base_prob_success = base_prob_success_millionths / 1e6; pinfo->use_shadow = use_shadow; - assert(p->disabledmap); - disabledmap_reset(p->disabledmap); - - for (size_t i = 0; i < tal_count(exclusions); i++) { - const struct route_exclusion *ex = exclusions[i]; - if (ex->type == EXCLUDE_CHANNEL) - disabledmap_add_channel(p->disabledmap, ex->u.chan_id); - else - disabledmap_add_node(p->disabledmap, ex->u.node_id); - } - return true; } @@ -322,7 +303,6 @@ void payment_disable_chan(struct payment *p, struct short_channel_id_dir scidd, enum log_level lvl, const char *fmt, ...) { assert(p); - assert(p->disabledmap); va_list ap; const char *str; @@ -332,14 +312,12 @@ void payment_disable_chan(struct payment *p, struct short_channel_id_dir scidd, payment_note(p, lvl, "disabling %s: %s", fmt_short_channel_id_dir(tmpctx, &scidd), str); - disabledmap_add_channel(p->disabledmap, scidd); } void payment_warn_chan(struct payment *p, struct short_channel_id_dir scidd, enum log_level lvl, const char *fmt, ...) { assert(p); - assert(p->disabledmap); va_list ap; const char *str; @@ -347,23 +325,15 @@ void payment_warn_chan(struct payment *p, struct short_channel_id_dir scidd, str = tal_vfmt(tmpctx, fmt, ap); va_end(ap); - if (disabledmap_channel_is_warned(p->disabledmap, scidd)) { - payment_disable_chan(p, scidd, lvl, "%s, channel warned twice", - str); - return; - } - payment_note( p, lvl, "flagged for warning %s: %s, next time it will be disabled", fmt_short_channel_id_dir(tmpctx, &scidd), str); - disabledmap_warn_channel(p->disabledmap, scidd); } void payment_disable_node(struct payment *p, struct node_id node, enum log_level lvl, const char *fmt, ...) { assert(p); - assert(p->disabledmap); va_list ap; const char *str; @@ -373,5 +343,4 @@ void payment_disable_node(struct payment *p, struct node_id node, payment_note(p, lvl, "disabling node %s: %s", fmt_node_id(tmpctx, &node), str); - disabledmap_add_node(p->disabledmap, node); } diff --git a/plugins/renepay/payment.h b/plugins/renepay/payment.h index 13b1527a9cad..8a6a6a5ef097 100644 --- a/plugins/renepay/payment.h +++ b/plugins/renepay/payment.h @@ -4,7 +4,6 @@ #include #include #include -#include #include enum payment_status { PAYMENT_PENDING, PAYMENT_SUCCESS, PAYMENT_FAIL }; @@ -53,9 +52,6 @@ struct payment { /* Running commands that want this payment */ struct command **cmd_array; - /* Localmods to apply to gossip_map for our own use. */ - struct gossmap_localmods *local_gossmods; - /* Routes will be computed to reach this node, could be a fake node that * we use to handle multiple blinded paths. */ struct node_id *routing_destination; diff --git a/plugins/renepay/payplugin.h b/plugins/renepay/payplugin.h index a0da496f048d..d2c43b0e1473 100644 --- a/plugins/renepay/payplugin.h +++ b/plugins/renepay/payplugin.h @@ -4,10 +4,8 @@ #include #include #include -#include #include #include -#include // TODO(eduardo): renepaystatus should be similar to paystatus @@ -59,9 +57,6 @@ struct pay_plugin { /* All the struct payment */ struct payment_map *payment_map; - /* Per-channel metadata: some persists between payments */ - struct uncertainty *uncertainty; - /* Pending sendpays. Each pending route has an associated HTLC data in * the uncertainty network. Pending routes are matched against sendpay * notifications. */ diff --git a/plugins/renepay/route.c b/plugins/renepay/route.c index 521f956ba690..340a4f2f1d7a 100644 --- a/plugins/renepay/route.c +++ b/plugins/renepay/route.c @@ -24,87 +24,6 @@ struct route *new_route(const tal_t *ctx, u64 groupid, return route; } -/* Construct a route from a flow. - * - * @ctx: allocator - * @groupid, @partid, @payment_hash: unique identification keys for this route - * @final_cltv: final delay required by the payment - * @gossmap: global gossmap - * @flow: the flow to convert to route */ -struct route *flow_to_route(const tal_t *ctx, - u64 groupid, u64 partid, struct sha256 payment_hash, - u32 final_cltv, struct gossmap *gossmap, - struct flow *flow, - bool blinded_destination) -{ - struct route *route = - new_route(ctx, groupid, partid, payment_hash, - AMOUNT_MSAT(0), AMOUNT_MSAT(0)); - - size_t pathlen = tal_count(flow->path); - route->hops = tal_arr(route, struct route_hop, pathlen); - - for (size_t i = 0; i < pathlen; i++) { - struct route_hop *hop = &route->hops[i]; - struct gossmap_node *n; - n = gossmap_nth_node(gossmap, flow->path[i], !flow->dirs[i]); - gossmap_node_get_id(gossmap, n, &hop->node_id); - - hop->scid = gossmap_chan_scid(gossmap, flow->path[i]); - hop->direction = flow->dirs[i]; - } - - /* Calculate cumulative delays (backwards) */ - route->hops[pathlen - 1].delay = final_cltv; - route->hops[pathlen - 1].amount = flow->amount; - - for (int i = (int)pathlen - 2; i >= 0; i--) { - const struct half_chan *h = flow_edge(flow, i + 1); - - route->hops[i].delay = route->hops[i + 1].delay + h->delay; - route->hops[i].amount = route->hops[i + 1].amount; - if (!amount_msat_add_fee(&route->hops[i].amount, h->base_fee, - h->proportional_fee)) - goto function_fail; - } - route->success_prob = flow->success_prob; - route->amount_deliver = route->hops[pathlen - 1].amount; - route->amount_sent = route->hops[0].amount; - - if (blinded_destination) { - route->path_num = route->hops[pathlen - 1].scid.u64; - tal_arr_remove(&route->hops, pathlen - 1); - } - - return route; - -function_fail: - return tal_free(route); -} - -struct route **flows_to_routes(const tal_t *ctx, - u64 groupid, u64 partid, - struct sha256 payment_hash, u32 final_cltv, - struct gossmap *gossmap, struct flow **flows) -{ - assert(gossmap); - assert(flows); - const size_t N = tal_count(flows); - struct route **routes = tal_arr(ctx, struct route *, N); - for (size_t i = 0; i < N; i++) { - routes[i] = - flow_to_route(routes, groupid, partid++, - payment_hash, final_cltv, gossmap, flows[i], - false); - if (!routes[i]) - goto function_fail; - } - return routes; - -function_fail: - return tal_free(routes); -} - const char *fmt_route_path(const tal_t *ctx, const struct route *route) { tal_t *this_ctx = tal(ctx, tal_t); diff --git a/plugins/renepay/route.h b/plugins/renepay/route.h index 592513d5b188..a944033cdcc6 100644 --- a/plugins/renepay/route.h +++ b/plugins/renepay/route.h @@ -11,7 +11,6 @@ #include #include #include -#include #include struct payment; @@ -122,17 +121,6 @@ struct route *new_route(const tal_t *ctx, u64 groupid, struct amount_msat amount, struct amount_msat amount_sent); -struct route *flow_to_route(const tal_t *ctx, - u64 groupid, u64 partid, struct sha256 payment_hash, - u32 final_cltv, struct gossmap *gossmap, - struct flow *flow, - bool blinded_destination); - -struct route **flows_to_routes(const tal_t *ctx, - u64 groupid, u64 partid, - struct sha256 payment_hash, u32 final_cltv, - struct gossmap *gossmap, struct flow **flows); - static inline struct short_channel_id_dir hop_to_scidd(const struct route_hop *hop) { diff --git a/plugins/renepay/routebuilder.c b/plugins/renepay/routebuilder.c deleted file mode 100644 index 4e9d15142326..000000000000 --- a/plugins/renepay/routebuilder.c +++ /dev/null @@ -1,433 +0,0 @@ -#include "config.h" -#include -#include -#include - -#include - -static void uncertainty_remove_routes(struct uncertainty *uncertainty, - struct route **routes) -{ - const size_t N = tal_count(routes); - for (size_t i = 0; i < N; i++) - uncertainty_remove_htlcs(uncertainty, routes[i]); -} - -/* Shave-off amounts that do not meet the liquidity constraints. Disable - * channels that produce an htlc_max bottleneck. */ -static enum renepay_errorcode -flow_adjust_htlcmax_constraints(struct flow *flow, struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - bitmap *disabled_bitmap) -{ - assert(flow); - assert(gossmap); - assert(chan_extra_map); - assert(disabled_bitmap); - assert(!amount_msat_is_zero(flow_delivers(flow))); - - enum renepay_errorcode errorcode; - - struct amount_msat max_deliverable; - const struct gossmap_chan *bad_channel; - - errorcode = flow_maximum_deliverable(&max_deliverable, flow, gossmap, - chan_extra_map, &bad_channel); - - if (!errorcode) { - assert(!amount_msat_is_zero(max_deliverable)); - - // no issues - flow->amount = - amount_msat_min(flow_delivers(flow), max_deliverable); - - return errorcode; - } - - if (errorcode == RENEPAY_BAD_CHANNEL) { - // this is a channel that we can disable - // FIXME: log this error? disabling both directions? - bitmap_set_bit(disabled_bitmap, - gossmap_chan_idx(gossmap, bad_channel) * 2 + 0); - bitmap_set_bit(disabled_bitmap, - gossmap_chan_idx(gossmap, bad_channel) * 2 + 1); - } - - // we had an unexpected error - return errorcode; -} - -static enum renepay_errorcode -route_check_constraints(struct route *route, struct gossmap *gossmap, - struct uncertainty *uncertainty, - bitmap *disabled_bitmap) -{ - assert(route); - assert(route->hops); - const size_t pathlen = tal_count(route->hops); - if (pathlen == 0) - return RENEPAY_NOERROR; - if (!amount_msat_eq(route->amount_deliver, - route->hops[pathlen - 1].amount)) - return RENEPAY_PRECONDITION_ERROR; - if (!amount_msat_eq(route->amount_sent, route->hops[0].amount)) - return RENEPAY_PRECONDITION_ERROR; - - for (size_t i = 0; i < pathlen; i++) { - struct route_hop *hop = &route->hops[i]; - int dir = hop->direction; - struct gossmap_chan *chan = - gossmap_find_chan(gossmap, &hop->scid); - assert(chan); - struct chan_extra *ce = - uncertainty_find_channel(uncertainty, hop->scid); - - // check that we stay within the htlc max and min limits - if (amount_msat_greater(hop->amount, - gossmap_chan_htlc_max(chan, dir)) || - amount_msat_less(hop->amount, - gossmap_chan_htlc_min(chan, dir))) { - bitmap_set_bit(disabled_bitmap, - gossmap_chan_idx(gossmap, chan) * 2 + - dir); - return RENEPAY_BAD_CHANNEL; - } - - // check that the sum of all htlcs and this amount does not - // exceed the maximum known by our knowledge - struct amount_msat total_htlcs = ce->half[dir].htlc_total; - if (!amount_msat_add(&total_htlcs, total_htlcs, hop->amount)) - return RENEPAY_AMOUNT_OVERFLOW; - - if (amount_msat_greater(total_htlcs, ce->half[dir].known_max)) - return RENEPAY_UNEXPECTED; - } - return RENEPAY_NOERROR; -} - -static void tal_report_error(const tal_t *ctx, enum jsonrpc_errcode *ecode, - const char **fail, - enum jsonrpc_errcode error_value, const char *fmt, - ...) -{ - tal_t *this_ctx = tal(ctx, tal_t); - - va_list ap; - const char *str; - - va_start(ap, fmt); - str = tal_vfmt(this_ctx, fmt, ap); - va_end(ap); - - if (ecode) - *ecode = error_value; - - if (fail) - *fail = tal_fmt(ctx, "%s", str); - - this_ctx = tal_free(this_ctx); -} - -/* Routes are computed and saved in the payment for later use. */ -struct route **get_routes(const tal_t *ctx, - struct payment_info *payment_info, - - const struct node_id *source, - const struct node_id *destination, - struct gossmap *gossmap, - struct uncertainty *uncertainty, - struct disabledmap *disabledmap, - - struct amount_msat amount_to_deliver, - struct amount_msat feebudget, - - u64 *next_partid, - u64 groupid, - bool blinded_destination, - - enum jsonrpc_errcode *ecode, - const char **fail) -{ - assert(gossmap); - assert(uncertainty); - - const tal_t *this_ctx = tal(ctx, tal_t); - struct route **routes = tal_arr(ctx, struct route *, 0); - - double probability_budget = payment_info->min_prob_success; - const double base_probability = payment_info->base_prob_success; - double delay_feefactor = payment_info->delay_feefactor; - const double base_fee_penalty = payment_info->base_fee_penalty; - const double prob_cost_factor = payment_info->prob_cost_factor; - const unsigned int maxdelay = payment_info->maxdelay; - bool delay_feefactor_updated = true; - - bitmap *disabled_bitmap = - tal_disabledmap_get_bitmap(this_ctx, disabledmap, gossmap); - - if (!disabled_bitmap) { - tal_report_error(ctx, ecode, fail, PLUGIN_ERROR, - "Failed to build disabled_bitmap."); - goto function_fail; - } - if (amount_msat_is_zero(amount_to_deliver)) { - tal_report_error(ctx, ecode, fail, PLUGIN_ERROR, - "amount to deliver is zero"); - goto function_fail; - } - - /* Also disable every channel that we don't have in the chan_extra_map. - * We might have channels in the gossmap that are not usable for - * probability computations for example if we don't know their capacity. - * We can tell the solver to ignore those channels by disabling them - * here. - */ - for (struct gossmap_chan *chan = gossmap_first_chan(gossmap); chan; - chan = gossmap_next_chan(gossmap, chan)) { - const u32 chan_id = gossmap_chan_idx(gossmap, chan); - struct short_channel_id scid = gossmap_chan_scid(gossmap, chan); - struct chan_extra *ce = - chan_extra_map_get(uncertainty->chan_extra_map, scid); - if (!ce) { - bitmap_set_bit(disabled_bitmap, chan_id * 2 + 0); - bitmap_set_bit(disabled_bitmap, chan_id * 2 + 1); - } - } - - const struct gossmap_node *src, *dst; - src = gossmap_find_node(gossmap, source); - if (!src) { - tal_report_error(ctx, ecode, fail, PAY_ROUTE_NOT_FOUND, - "We don't have any channels."); - goto function_fail; - } - dst = gossmap_find_node(gossmap, destination); - if (!dst) { - tal_report_error( - ctx, ecode, fail, PAY_ROUTE_NOT_FOUND, - "Destination is unknown in the network gossip."); - goto function_fail; - } - - char *errmsg; - - while (!amount_msat_is_zero(amount_to_deliver)) { - - /* TODO: choose an algorithm, could be something like - * payment->algorithm, that we set up based on command line - * options and that can be changed according to some conditions - * met during the payment process, eg. add "select_solver" pay - * mod. */ - /* TODO: use uncertainty instead of chan_extra */ - - /* Min. Cost Flow algorithm to find optimal flows. */ - struct flow **flows = - minflow(this_ctx, gossmap, src, dst, - uncertainty_get_chan_extra_map(uncertainty), - disabled_bitmap, amount_to_deliver, feebudget, - probability_budget, - base_probability, - delay_feefactor, - base_fee_penalty, - prob_cost_factor, &errmsg); - delay_feefactor_updated = false; - - if (!flows) { - tal_report_error( - ctx, ecode, fail, PAY_ROUTE_NOT_FOUND, - "minflow couldn't find a feasible flow: %s", - errmsg); - goto function_fail; - } - - enum renepay_errorcode errorcode; - for (size_t i = 0; i < tal_count(flows); i++) { - - // do we overpay? - if (amount_msat_greater(flows[i]->amount, - amount_to_deliver)) { - // should not happen - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "%s: flow is delivering to destination " - "(%s) more than requested (%s)", - __func__, - fmt_amount_msat(this_ctx, flows[i]->amount), - fmt_amount_msat(this_ctx, - amount_to_deliver)); - goto function_fail; - } - - // fees considered, remove the least amount as to fit in - // with the htlcmax constraints - errorcode = flow_adjust_htlcmax_constraints( - flows[i], gossmap, - uncertainty_get_chan_extra_map(uncertainty), - disabled_bitmap); - if (errorcode == RENEPAY_BAD_CHANNEL) - // we handle a bad channel error by disabling - // it, infinite loops are avoided since we have - // everytime less and less channels - continue; - if (errorcode) { - // any other error is bad - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "flow_adjust_htlcmax_constraints returned " - "errorcode: %s", - renepay_errorcode_name(errorcode)); - goto function_fail; - } - - // a bound check, we shouldn't deliver a zero amount, it - // would mean a bug somewhere - if (amount_msat_is_zero(flows[i]->amount)) { - tal_report_error(ctx, ecode, fail, PLUGIN_ERROR, - "flow conveys a zero amount"); - goto function_fail; - } - - const double prob = flow_probability( - flows[i], gossmap, - uncertainty_get_chan_extra_map(uncertainty), true); - if (prob < 0) { - // should not happen - tal_report_error(ctx, ecode, fail, PLUGIN_ERROR, - "flow_probability failed"); - goto function_fail; - } - - // this flow seems good, build me a route - struct route *r = flow_to_route( - this_ctx, groupid, *next_partid, - payment_info->payment_hash, - payment_info->final_cltv, gossmap, flows[i], - blinded_destination); - - if (!r) { - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "%s failed to build route from flow.", - __func__); - goto function_fail; - } - - const struct amount_msat fee = route_fees(r); - const struct amount_msat delivering = route_delivers(r); - - // are we still within the fee budget? - if (amount_msat_greater(fee, feebudget)) { - tal_report_error( - ctx, ecode, fail, PAY_ROUTE_TOO_EXPENSIVE, - "Fee exceeds our fee budget, fee=%s " - "(feebudget=%s)", - fmt_amount_msat(this_ctx, fee), - fmt_amount_msat(this_ctx, feebudget)); - goto function_fail; - } - - // check the CLTV delay does not exceed our settings - const unsigned int delay = route_delay(r); - if (delay > maxdelay) { - if (!delay_feefactor_updated) { - delay_feefactor *= 2; - delay_feefactor_updated = true; - } - - /* FIXME: What is a sane limit? */ - if (delay_feefactor > 1000) { - tal_report_error( - ctx, ecode, fail, - PAY_ROUTE_TOO_EXPENSIVE, - "CLTV delay exceeds our CLTV " - "budget, delay=%u (maxdelay=%u)", - delay, maxdelay); - goto function_fail; - } - continue; - } - - // check that the route satisfy all constraints - errorcode = route_check_constraints( - r, gossmap, uncertainty, disabled_bitmap); - - if (errorcode == RENEPAY_BAD_CHANNEL) - continue; - if (errorcode) { - // any other error is bad - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "route_check_constraints returned " - "errorcode: %s", - renepay_errorcode_name(errorcode)); - goto function_fail; - } - - // update the fee budget - if (!amount_msat_sub(&feebudget, feebudget, fee)) { - // should never happen - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "%s routing fees (%s) exceed fee " - "budget (%s).", - __func__, - fmt_amount_msat(this_ctx, fee), - fmt_amount_msat(this_ctx, feebudget)); - goto function_fail; - } - - // update the amount that we deliver - if (!amount_msat_sub(&amount_to_deliver, - amount_to_deliver, delivering)) { - // should never happen - tal_report_error( - ctx, ecode, fail, PLUGIN_ERROR, - "%s: route delivering to destination (%s) " - "is more than requested (%s)", - __func__, - fmt_amount_msat(this_ctx, delivering), - fmt_amount_msat(this_ctx, - amount_to_deliver)); - goto function_fail; - } - - // update the probability target - if (prob < 1e-10) { - // probability is too small for division - probability_budget = 1.0; - } else { - /* prob here is a conditional probability, the - * next flow will have a conditional - * probability prob2 and we would like that - * prob*prob2 >= probability_budget hence - * probability_budget/prob becomes the next - * iteration's target. */ - probability_budget = - MIN(1.0, probability_budget / prob); - } - - // route added - (*next_partid)++; - uncertainty_commit_htlcs(uncertainty, r); - tal_arr_expand(&routes, r); - } - } - - /* remove the temporary routes from the uncertainty network */ - uncertainty_remove_routes(uncertainty, routes); - - /* ownership */ - for (size_t i = 0; i < tal_count(routes); i++) - routes[i] = tal_steal(routes, routes[i]); - - tal_free(this_ctx); - return routes; - -function_fail: - /* remove the temporary routes from the uncertainty network */ - uncertainty_remove_routes(uncertainty, routes); - - /* Discard any routes we have constructed here. */ - tal_free(this_ctx); - return tal_free(routes); -} diff --git a/plugins/renepay/routebuilder.h b/plugins/renepay/routebuilder.h deleted file mode 100644 index b7297e5410c4..000000000000 --- a/plugins/renepay/routebuilder.h +++ /dev/null @@ -1,31 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_ROUTEBUILDER_H -#define LIGHTNING_PLUGINS_RENEPAY_ROUTEBUILDER_H - -#include "config.h" -#include -#include -#include -#include -#include -#include - -struct route **get_routes(const tal_t *ctx, - struct payment_info *payment_info, - - const struct node_id *source, - const struct node_id *destination, - struct gossmap *gossmap, - struct uncertainty *uncertainty, - struct disabledmap *disabledmap, - - struct amount_msat amount_to_deliver, - struct amount_msat feebudget, - - u64 *next_partid, - u64 groupid, - bool blinded_destination, - - enum jsonrpc_errcode *ecode, - const char **fail); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_ROUTEBUILDER_H */ diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 9a94b6c1c7a5..77f8a1efe794 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -31,7 +31,7 @@ static struct command_result *routefail_end(struct command *cmd, { /* Notify the tracker that route has failed and routefail have completed * handling all possible errors cases. */ - route_failure_register(r->payment->routetracker, r->route); + routetracker_add_to_final(r->payment->routetracker, r->route); r = tal_free(r); return notification_handled(cmd); } diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index 2e8b9ba2b08d..9b68f48958c5 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -45,8 +45,8 @@ void routetracker_cleanup(struct routetracker *routetracker) // TODO } -static void routetracker_add_to_final(struct routetracker *routetracker, - struct route *route) +void routetracker_add_to_final(struct routetracker *routetracker, + struct route *route) { tal_arr_expand(&routetracker->finalized_routes, route); tal_steal(routetracker->finalized_routes, route); @@ -87,61 +87,9 @@ static void routetracker_add_to_final(struct routetracker *routetracker, } } -static void route_success_register(struct routetracker *routetracker, - struct route *route) -{ - if(route->hops){ - uncertainty_route_success(pay_plugin->uncertainty, route); - } - routetracker_add_to_final(routetracker, route); -} -void route_failure_register(struct routetracker *routetracker, - struct route *route) -{ - struct payment_result *result = route->result; - assert(result); - - /* Update the knowledge in the uncertaity network. */ - if (route->hops && result->failcode) { - assert(result->erring_index); - int path_len = tal_count(route->hops); - - /* index of the last channel before the erring node */ - const int last_good_channel = *result->erring_index - 1; - - if (last_good_channel >= path_len) { - plugin_err(pay_plugin->plugin, - "last_good_channel (%d) >= path_len (%d)", - last_good_channel, path_len); - } - - /* All channels before the erring node could forward the - * payment. */ - for (int i = 0; i <= last_good_channel; i++) { - uncertainty_channel_can_send(pay_plugin->uncertainty, - route->hops[i].scid, - route->hops[i].direction); - } - - if (*result->failcode == WIRE_TEMPORARY_CHANNEL_FAILURE && - (last_good_channel + 1) < path_len) { - /* A WIRE_TEMPORARY_CHANNEL_FAILURE could mean not - * enough liquidity to forward the payment or cannot add - * one more HTLC. - */ - uncertainty_channel_cannot_send( - pay_plugin->uncertainty, - route->hops[last_good_channel + 1].scid, - route->hops[last_good_channel + 1].direction); - } - } - routetracker_add_to_final(routetracker, route); -} - static void remove_route(struct route *route, struct route_map *map) { route_map_del(map, route); - uncertainty_remove_htlcs(pay_plugin->uncertainty, route); } /* This route is pending, ie. locked in HTLCs. @@ -172,8 +120,6 @@ static void route_pending_register(struct routetracker *routetracker, __func__, fmt_routekey(tmpctx, &route->key)); - uncertainty_commit_htlcs(pay_plugin->uncertainty, route); - if (!tal_steal(pay_plugin->pending_routes, route) || !route_map_add(pay_plugin->pending_routes, route) || !tal_add_destructor2(route, remove_route, @@ -518,6 +464,6 @@ struct command_result *notification_sendpay_success(struct command *cmd, json_tok_full_len(sub), json_tok_full(buf, sub)); assert(route->result->status == SENDPAY_COMPLETE); - route_success_register(payment->routetracker, route); + routetracker_add_to_final(payment->routetracker, route); return notification_handled(cmd); } diff --git a/plugins/renepay/routetracker.h b/plugins/renepay/routetracker.h index 2e4c440a2339..88ccbfc24cf2 100644 --- a/plugins/renepay/routetracker.h +++ b/plugins/renepay/routetracker.h @@ -47,9 +47,8 @@ struct command_result *notification_sendpay_success(struct command *cmd, const char *buf, const jsmntok_t *params); -/* Notify the tracker that this route has failed. */ -void route_failure_register(struct routetracker *routetracker, - struct route *route); +void routetracker_add_to_final(struct routetracker *routetracker, + struct route *route); // FIXME: double-check that we actually get one notification for each sendpay, // ie. that after some time we don't have yet pending sendpays for old failed or diff --git a/plugins/renepay/test/Makefile b/plugins/renepay/test/Makefile index ba3c49b1ff94..a74763facc24 100644 --- a/plugins/renepay/test/Makefile +++ b/plugins/renepay/test/Makefile @@ -9,12 +9,9 @@ ALL_TEST_PROGRAMS += $(PLUGIN_RENEPAY_TEST_PROGRAMS) $(PLUGIN_RENEPAY_TEST_OBJS): $(PLUGIN_RENEPAY_SRC) plugins/renepay/test/common.h PLUGIN_RENEPAY_TEST_COMMON_OBJS := \ - plugins/renepay/dijkstra.o \ - plugins/renepay/chan_extra.o \ bitcoin/chainparams.o \ common/gossmap.o \ common/fp16.o \ - common/dijkstra.o \ gossipd/gossip_store_wiregen.o $(PLUGIN_RENEPAY_TEST_PROGRAMS): $(PLUGIN_RENEPAY_TEST_COMMON_OBJS) $(PLUGIN_LIB_OBJS) $(PLUGIN_COMMON_OBJS) $(JSMN_OBJS) $(CCAN_OBJS) diff --git a/plugins/renepay/test/run-arc.c b/plugins/renepay/test/run-arc.c deleted file mode 100644 index 793a0e70a0e2..000000000000 --- a/plugins/renepay/test/run-arc.c +++ /dev/null @@ -1,86 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "../flow.c" -#include "../mcf.c" - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -int main(int argc, char *argv[]) -{ - bool dual; - u32 part; - int chandir; - u32 chanidx; - - common_setup(argv[0]); - - for (int i = 0; i < 32; i++) { - for (int j = 0; j < 32; j++) { - for (int k = 0; k < 32; k++) { - struct arc a, a2; - - a.idx = (1U << i) | (1U << j) | (1U << k); - arc_to_parts(a, &chanidx, &chandir, &part, &dual); - a2 = arc_from_parts(chanidx, chandir, part, dual); - assert(a.idx == a2.idx); - } - } - } - - /* Test all chanidx */ - for (int i = 0; i < (1U << ARC_CHANIDX_BITS); i++) { - struct arc a = arc_from_parts(i, chandir, part, dual); - - arc_to_parts(a, &chanidx, NULL, NULL, NULL); - assert(chanidx == i); - } - - /* Test both chandir */ - for (int i = 0; i < 2; i++) { - struct arc a = arc_from_parts(chanidx, i, part, dual); - - arc_to_parts(a, NULL, &chandir, NULL, NULL); - assert(chandir == i); - } - - /* Test all parts */ - for (int i = 0; i < CHANNEL_PARTS; i++) { - struct arc a = arc_from_parts(chanidx, chandir, i, dual); - - arc_to_parts(a, NULL, NULL, &part, NULL); - assert(part == i); - } - - /* Test both dual */ - for (int i = 0; i < 2; i++) { - struct arc a = arc_from_parts(chanidx, chandir, part, i); - - arc_to_parts(a, NULL, NULL, NULL, &dual); - assert(dual == i); - - assert(arc_is_dual(a) == dual); - - a = arc_dual(a); - arc_to_parts(a, NULL, NULL, NULL, &dual); - assert(dual == !i); - assert(arc_is_dual(a) == dual); - } - - common_shutdown(); -} - diff --git a/plugins/renepay/test/run-bottleneck.c b/plugins/renepay/test/run-bottleneck.c deleted file mode 100644 index f22d45fbbf6e..000000000000 --- a/plugins/renepay/test/run-bottleneck.c +++ /dev/null @@ -1,278 +0,0 @@ -/* Checks that get_route can handle bottleneck situations assigning values to - * routes that do not exceed the liquidity constraints. */ -#include "config.h" - -#include "../errorcodes.c" -#include "../flow.c" -#include "../mcf.c" -#include "../uncertainty.c" -#include "../disabledmap.c" -#include "../route.c" -#include "../routebuilder.c" -#include "common.h" - -#include -#include -#include -#include -#include -#include - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -static u8 empty_map[] = {10}; - -static const char *print_flows(const tal_t *ctx, const char *desc, - const struct gossmap *gossmap, - struct chan_extra_map *chan_extra_map, - struct flow **flows) -{ - tal_t *this_ctx = tal(ctx, tal_t); - double tot_prob = - flowset_probability(tmpctx, flows, gossmap, chan_extra_map, false, NULL); - assert(tot_prob >= 0); - char *buff = tal_fmt(ctx, "%s: %zu subflows, prob %2lf\n", desc, - tal_count(flows), tot_prob); - for (size_t i = 0; i < tal_count(flows); i++) { - struct amount_msat fee, delivered; - tal_append_fmt(&buff, " "); - for (size_t j = 0; j < tal_count(flows[i]->path); j++) { - struct short_channel_id scid = - gossmap_chan_scid(gossmap, flows[i]->path[j]); - tal_append_fmt(&buff, "%s%s", j ? "->" : "", - fmt_short_channel_id(this_ctx, scid)); - } - delivered = flows[i]->amount; - if (!flow_fee(&fee, flows[i])) { - abort(); - } - tal_append_fmt(&buff, " prob %.2f, %s delivered with fee %s\n", - flows[i]->success_prob, - fmt_amount_msat(this_ctx, delivered), - fmt_amount_msat(this_ctx, fee)); - } - - tal_free(this_ctx); - return buff; -} - -#define NUM_NODES 8 - -static void remove_file(char *fname) { assert(!remove(fname)); } - -int main(int argc, char *argv[]) -{ - int fd; - char *gossfile; - struct gossmap *gossmap; - struct node_id nodes[NUM_NODES]; - - common_setup(argv[0]); - chainparams = chainparams_for_network("regtest"); - - fd = tmpdir_mkstemp(tmpctx, "run-bottleneck.XXXXXX", &gossfile); - tal_add_destructor(gossfile, remove_file); - assert(write(fd, empty_map, sizeof(empty_map)) == sizeof(empty_map)); - - gossmap = gossmap_load(tmpctx, gossfile, NULL, NULL); - assert(gossmap); - - for (size_t i = 0; i < NUM_NODES; i++) { - struct privkey tmp; - memset(&tmp, i+1, sizeof(tmp)); - node_id_from_privkey(&tmp, &nodes[i]); - } - - /* We will try a payment from 1 to 8, forcing a payment split between - * two routes 1->2->4->5->6->8 and 1->3->4->5->7->8. - * To force the split the total payment amount will be greater than the - * channel 1-2 and 1-3 capacities. Then channel 4--5 will be a common - * edge in the payment routes. - * - * MCF does not handle fees hence if the capacity of 4--5 is enough to - * let the entire payment pass, we expect that minflow computes two - * routes that are scaled down by get_route algorithm - * to fit for the fee constraints. - * - * +--2--+ +--6--+ - * | | | | - * 1 4---5 8 - * | | | | - * +--3--+ +--7--+ - * - * */ - struct short_channel_id scid; - - assert(mk_short_channel_id(&scid, 1, 2, 0)); - add_connection(fd, &nodes[0], &nodes[1], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(60 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(60 * 1000)); - - assert(mk_short_channel_id(&scid, 1, 3, 0)); - add_connection(fd, &nodes[0], &nodes[2], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(60 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(60 * 1000)); - - assert(mk_short_channel_id(&scid, 2, 4, 0)); - add_connection(fd, &nodes[1], &nodes[3], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(mk_short_channel_id(&scid, 3, 4, 0)); - add_connection(fd, &nodes[2], &nodes[3], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(mk_short_channel_id(&scid, 4, 5, 0)); - add_connection(fd, &nodes[3], &nodes[4], scid, - AMOUNT_MSAT(0), - /* MCF cuts off at 95% of the conditional capacity, for - * cap = 106k that means only 100.7k sats can be sent - * through this channel. */ - AMOUNT_MSAT(106 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(110 * 1000)); - - assert(mk_short_channel_id(&scid, 5, 6, 0)); - add_connection(fd, &nodes[4], &nodes[5], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 100 * 1000 /* 10% */, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(mk_short_channel_id(&scid, 5, 7, 0)); - add_connection(fd, &nodes[4], &nodes[6], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 100 * 1000 /* 10% */, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(mk_short_channel_id(&scid, 6, 8, 0)); - add_connection(fd, &nodes[5], &nodes[7], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(mk_short_channel_id(&scid, 7, 8, 0)); - add_connection(fd, &nodes[6], &nodes[7], scid, - AMOUNT_MSAT(0), - AMOUNT_MSAT(1000 * 1000 * 1000), - 0, 0, 5, - AMOUNT_SAT(1000 * 1000)); - - assert(gossmap_refresh(gossmap)); - struct uncertainty *uncertainty = uncertainty_new(tmpctx); - int skipped_count = - uncertainty_update(uncertainty, gossmap); - assert(skipped_count==0); - - bitmap *disabled = tal_arrz( - tmpctx, bitmap, 2 * BITMAP_NWORDS(gossmap_max_chan_idx(gossmap))); - assert(disabled); - - char *errmsg; - struct flow **flows; - flows = - minflow(tmpctx, gossmap, gossmap_find_node(gossmap, &nodes[0]), - gossmap_find_node(gossmap, &nodes[7]), - uncertainty->chan_extra_map, disabled, - /* Half the capacity */ - AMOUNT_MSAT(100 * 1000 * 1000), - /* max_fee = */ AMOUNT_MSAT(20 * 1000 * 1000), - /* min probability = */ 0.9, - /* base probability = */ 1.0, - /* delay fee factor = */ 1e-6, - /* base fee penalty */ 10, - /* prob cost factor = */ 10, &errmsg); - - if (!flows) { - printf("Minflow has failed with: %s\n", errmsg); - assert(flows); - } - - if(flows) - printf("%s\n", print_flows(tmpctx, "Simple minflow", gossmap, - uncertainty->chan_extra_map, flows)); - - struct preimage preimage; - - struct amount_msat maxfee = AMOUNT_MSAT(20*1000*1000); - struct payment_info pinfo; - pinfo.invstr = NULL; - pinfo.label = NULL; - pinfo.description = NULL; - pinfo.payment_secret = NULL; - pinfo.payment_metadata = NULL; - pinfo.routehints = NULL; - pinfo.destination = nodes[7]; - pinfo.amount = AMOUNT_MSAT(100 * 1000 * 1000); - - assert(amount_msat_add(&pinfo.maxspend, maxfee, pinfo.amount)); - pinfo.maxdelay = 100; - pinfo.final_cltv = 5; - - pinfo.start_time = time_now(); - pinfo.stop_time = timeabs_add(pinfo.start_time, time_from_sec(10000)); - - pinfo.base_fee_penalty = 1e-5; - pinfo.prob_cost_factor = 1e-5; - pinfo.delay_feefactor = 1e-6; - pinfo.min_prob_success = 0.9; - pinfo.base_prob_success = 1.0; - pinfo.use_shadow = false; - - randombytes_buf(&preimage, sizeof(preimage)); - sha256(&pinfo.payment_hash, &preimage, sizeof(preimage)); - - // char hex_preimage[600], hex_sha256[600]; - // assert(hex_encode(preimage.r, sizeof(preimage.r), hex_preimage, sizeof(hex_preimage))); - // assert(hex_encode(pinfo.payment_hash.u.u8, sizeof(pinfo.payment_hash), hex_sha256, sizeof(hex_sha256))); - // printf("preimage: %s\npayment_hash: %s\n", hex_preimage, hex_sha256); - - struct disabledmap *disabledmap = disabledmap_new(tmpctx); - - enum jsonrpc_errcode errcode; - const char *err_msg; - - u64 groupid = 1; - u64 next_partid=1; - - struct route **routes = get_routes( - /* ctx */tmpctx, - /* payment */&pinfo, - /* source */&nodes[0], - /* destination */&nodes[7], - /* gossmap */gossmap, - /* uncertainty */uncertainty, - disabledmap, - /* amount */ pinfo.amount, - /* feebudget */maxfee, - &next_partid, - groupid, - false, - &errcode, - &err_msg); - - if (!routes) { - printf("get_route failed with error %d: %s\n", errcode, err_msg); - assert(routes); - } - if(routes) - printf("get_routes: %s\n", print_routes(tmpctx, routes)); - - common_shutdown(); -} diff --git a/plugins/renepay/test/run-dijkstra.c b/plugins/renepay/test/run-dijkstra.c deleted file mode 100644 index 49e7a364f53b..000000000000 --- a/plugins/renepay/test/run-dijkstra.c +++ /dev/null @@ -1,100 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -static void insertion_in_increasing_distance(const tal_t *ctx) -{ - struct dijkstra *dijkstra = dijkstra_new(ctx,10); - - for(int i=0;i -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for disabledmap_add_channel */ -void disabledmap_add_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_add_channel called!\n"); abort(); } -/* Generated stub for disabledmap_add_node */ -void disabledmap_add_node(struct disabledmap *p UNNEEDED, struct node_id node UNNEEDED) -{ fprintf(stderr, "disabledmap_add_node called!\n"); abort(); } -/* Generated stub for disabledmap_channel_is_warned */ -bool disabledmap_channel_is_warned(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_channel_is_warned called!\n"); abort(); } -/* Generated stub for disabledmap_new */ -struct disabledmap *disabledmap_new(const tal_t *ctx UNNEEDED) -{ fprintf(stderr, "disabledmap_new called!\n"); abort(); } -/* Generated stub for disabledmap_reset */ -void disabledmap_reset(struct disabledmap *p UNNEEDED) -{ fprintf(stderr, "disabledmap_reset called!\n"); abort(); } -/* Generated stub for disabledmap_warn_channel */ -void disabledmap_warn_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_warn_channel called!\n"); abort(); } -/* Generated stub for json_add_payment */ -void json_add_payment(struct json_stream *s UNNEEDED, const struct payment *payment UNNEEDED) -{ fprintf(stderr, "json_add_payment called!\n"); abort(); } -/* Generated stub for new_routetracker */ -struct routetracker *new_routetracker(const tal_t *ctx UNNEEDED, struct payment *payment UNNEEDED) -{ fprintf(stderr, "new_routetracker called!\n"); abort(); } -/* Generated stub for pay_plugin */ -struct pay_plugin *pay_plugin; -/* Generated stub for routetracker_cleanup */ -void routetracker_cleanup(struct routetracker *routetracker UNNEEDED) -{ fprintf(stderr, "routetracker_cleanup called!\n"); abort(); } -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -static u8 empty_map[] = { - 0 -}; - -static const char* print_flows( - const tal_t *ctx, - const char *desc, - const struct gossmap *gossmap, - struct chan_extra_map* chan_extra_map, - struct flow **flows) -{ - tal_t *this_ctx = tal(ctx,tal_t); - double tot_prob = - flowset_probability(tmpctx, flows, gossmap, chan_extra_map, false, NULL); - assert(tot_prob>=0); - char *buff = tal_fmt(ctx,"%s: %zu subflows, prob %2lf\n", desc, tal_count(flows),tot_prob); - for (size_t i = 0; i < tal_count(flows); i++) { - struct amount_msat fee, delivered; - tal_append_fmt(&buff," "); - for (size_t j = 0; j < tal_count(flows[i]->path); j++) { - struct short_channel_id scid - = gossmap_chan_scid(gossmap, - flows[i]->path[j]); - tal_append_fmt(&buff,"%s%s", j ? "->" : "", - fmt_short_channel_id(this_ctx, scid)); - } - delivered = flows[i]->amount; - if (!flow_fee(&fee, flows[i])) - { - abort(); - } - tal_append_fmt(&buff," prob %.2f, %s delivered with fee %s\n", - flows[i]->success_prob, - fmt_amount_msat(this_ctx, delivered), - fmt_amount_msat(this_ctx, fee)); - } - - tal_free(this_ctx); - return buff; -} - -static void remove_file(char *fname) { assert(!remove(fname)); } - -int main(int argc, char *argv[]) -{ - int fd; - char *gossfile; - struct gossmap *gossmap; - struct node_id l1, l2, l3, l4; - struct short_channel_id scid12, scid13, scid24, scid34; - struct gossmap_localmods *mods; - struct chan_extra_map *chan_extra_map; - - char *errmsg; - - common_setup(argv[0]); - - fd = tmpdir_mkstemp(tmpctx, "run-not_mcf-diamond.XXXXXX", &gossfile); - tal_add_destructor(gossfile, remove_file); - assert(write_all(fd, empty_map, sizeof(empty_map))); - - gossmap = gossmap_load(tmpctx, gossfile, NULL, NULL); - assert(gossmap); - - /* These are in ascending order, for easy direction setting */ - assert(node_id_from_hexstr("022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59", 66, &l1)); - assert(node_id_from_hexstr("0266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c03518", 66, &l2)); - assert(node_id_from_hexstr("035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d", 66, &l3)); - assert(node_id_from_hexstr("0382ce59ebf18be7d84677c2e35f23294b9992ceca95491fcf8a56c6cb2d9de199", 66, &l4)); - assert(short_channel_id_from_str("1x2x0", 5, &scid12)); - assert(short_channel_id_from_str("1x3x0", 5, &scid13)); - assert(short_channel_id_from_str("2x4x0", 5, &scid24)); - assert(short_channel_id_from_str("3x4x0", 5, &scid34)); - - mods = gossmap_localmods_new(tmpctx); - - /* 1->2->4 has capacity 10k sat, 1->3->4 has capacity 5k sat (lower fee!) */ - assert(gossmap_local_addchan(mods, &l1, &l2, scid12, AMOUNT_MSAT(10000000), NULL)); - assert(gossmap_local_setchan(mods, scid12, - /*htlc_min=*/ AMOUNT_MSAT(0), - /*htlc_max=*/ AMOUNT_MSAT(10000000), - /*base_fee=*/ AMOUNT_MSAT(0), - /*ppm_fee =*/ 1001, - /* delay =*/ 5, - /* enabled=*/ true, - /* dir =*/ 0)); - assert(gossmap_local_addchan(mods, &l2, &l4, scid24, AMOUNT_MSAT(10000000), NULL)); - assert(gossmap_local_setchan(mods, scid24, - AMOUNT_MSAT(0), - AMOUNT_MSAT(10000000), - AMOUNT_MSAT(0), 1002, 5, - true, - 0)); - assert(gossmap_local_addchan(mods, &l1, &l3, scid13, AMOUNT_MSAT(5000000), NULL)); - assert(gossmap_local_setchan(mods, scid13, - AMOUNT_MSAT(0), - AMOUNT_MSAT(5000000), - AMOUNT_MSAT(0), 503, 5, - true, - 0)); - assert(gossmap_local_addchan(mods, &l3, &l4, scid34, AMOUNT_MSAT(5000000), NULL)); - assert(gossmap_local_setchan(mods, scid34, - AMOUNT_MSAT(0), - AMOUNT_MSAT(5000000), - AMOUNT_MSAT(0), 504, 5, - true, - 0)); - - gossmap_apply_localmods(gossmap, mods); - chan_extra_map = tal(tmpctx, struct chan_extra_map); - chan_extra_map_init(chan_extra_map); - /* The local chans have no "capacity", so set them manually. */ - new_chan_extra(chan_extra_map, - scid12, - AMOUNT_MSAT(10000000)); - new_chan_extra(chan_extra_map, - scid24, - AMOUNT_MSAT(10000000)); - new_chan_extra(chan_extra_map, - scid13, - AMOUNT_MSAT(5000000)); - new_chan_extra(chan_extra_map, - scid34, - AMOUNT_MSAT(5000000)); - - bitmap *disabled = tal_arrz( - tmpctx, bitmap, 2 * BITMAP_NWORDS(gossmap_max_chan_idx(gossmap))); - - struct flow **flows; - flows = minflow(tmpctx, gossmap, - gossmap_find_node(gossmap, &l1), - gossmap_find_node(gossmap, &l4), - chan_extra_map, - disabled, - /* Half the capacity */ - AMOUNT_MSAT(1000000), // 1000 sats - /* max_fee = */ AMOUNT_MSAT(10000), // 10 sats - /* min probability = */ 0.8, // 80% - /* base probability = */ 1.0, - /* delay fee factor = */ 0, - /* base fee penalty */ 0, - /* prob cost factor = */ 1, - &errmsg); - if (!flows) { - printf("Minflow has failed with: %s", errmsg); - assert(0 && "minflow failed"); - } - - printf("%s\n", - print_flows(tmpctx,"Simple minflow", gossmap,chan_extra_map, flows)); - - common_shutdown(); -} diff --git a/plugins/renepay/test/run-mcf.c b/plugins/renepay/test/run-mcf.c deleted file mode 100644 index 1a95dff44220..000000000000 --- a/plugins/renepay/test/run-mcf.c +++ /dev/null @@ -1,609 +0,0 @@ -#include "config.h" - -#define RENEPAY_UNITTEST // logs are written in /tmp/debug.txt -#include "../payment.c" -#include "../flow.c" -#include "../route.c" -#include "../uncertainty.c" -#include "../mcf.c" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for disabledmap_add_channel */ -void disabledmap_add_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_add_channel called!\n"); abort(); } -/* Generated stub for disabledmap_add_node */ -void disabledmap_add_node(struct disabledmap *p UNNEEDED, struct node_id node UNNEEDED) -{ fprintf(stderr, "disabledmap_add_node called!\n"); abort(); } -/* Generated stub for disabledmap_channel_is_warned */ -bool disabledmap_channel_is_warned(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_channel_is_warned called!\n"); abort(); } -/* Generated stub for disabledmap_new */ -struct disabledmap *disabledmap_new(const tal_t *ctx UNNEEDED) -{ fprintf(stderr, "disabledmap_new called!\n"); abort(); } -/* Generated stub for disabledmap_reset */ -void disabledmap_reset(struct disabledmap *p UNNEEDED) -{ fprintf(stderr, "disabledmap_reset called!\n"); abort(); } -/* Generated stub for disabledmap_warn_channel */ -void disabledmap_warn_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_warn_channel called!\n"); abort(); } -/* Generated stub for json_add_payment */ -void json_add_payment(struct json_stream *s UNNEEDED, const struct payment *payment UNNEEDED) -{ fprintf(stderr, "json_add_payment called!\n"); abort(); } -/* Generated stub for new_routetracker */ -struct routetracker *new_routetracker(const tal_t *ctx UNNEEDED, struct payment *payment UNNEEDED) -{ fprintf(stderr, "new_routetracker called!\n"); abort(); } -/* Generated stub for pay_plugin */ -struct pay_plugin *pay_plugin; -/* Generated stub for routetracker_cleanup */ -void routetracker_cleanup(struct routetracker *routetracker UNNEEDED) -{ fprintf(stderr, "routetracker_cleanup called!\n"); abort(); } -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -static void swap(int *a, int *b) -{ - int temp = *a; - *a = *b; - *b = temp; -} - -/* Canned gossmap, taken from tests/test_gossip.py, with channels mined. - * $> od -tx1 -Anone -v < /tmp/ltests-rtchpzh1/test_gossip_store_compact_noappend_1/lightning-2/regtest/gossip_store | sed 's/ / 0x/g'| cut -c2- | sed -e 's/ /,/g' -e 's/$/,/' - */ -static u8 canned_map[] = { - 0x0c,0x80,0x00,0x01,0xbc,0x09,0x8b,0x67,0xe6,0x00,0x00,0x00,0x00,0x10,0x08,0x00, - 0x00,0x00,0x00,0x00,0x0f,0x42,0x40,0x01,0xb0,0x01,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x22,0x6e, - 0x46,0x11,0x1a,0x0b,0x59,0xca,0xaf,0x12,0x60,0x43,0xeb,0x5b,0xbf,0x28,0xc3,0x4f, - 0x3a,0x5e,0x33,0x2a,0x1f,0xc7,0xb2,0xb7,0x3c,0xf1,0x88,0x91,0x0f,0x00,0x00,0x67, - 0x00,0x00,0x01,0x00,0x00,0x02,0x2d,0x22,0x36,0x20,0xa3,0x59,0xa4,0x7f,0xf7,0xf7, - 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0x00,0x00,0x00,0x00,0x00,0x00,0x14,0x00,0x00,0x03,0xe8,0x00,0x00,0x00,0x00,0x3b, - 0x02,0x33,0x80,0x00,0x00,0x00,0x95,0xf6,0xd7,0x24,0x69,0x65,0x55,0xb3,0x79,0x01, - 0x01,0x42,0x62,0x2b,0xf0,0x0a,0x44,0xc3,0xe0,0x78,0x3c,0xa7,0x08,0x5a,0xa0,0xaa, - 0x9d,0xb2,0xdc,0x2e,0xa7,0x29,0x0a,0x39,0x3d,0x01,0x57,0xbf,0x34,0x23,0x0f,0xb9, - 0x19,0x33,0x6f,0xc2,0xfb,0x9f,0x25,0xac,0xc4,0xc9,0x47,0xb7,0x41,0x92,0xdb,0x2f, - 0xd5,0xf0,0x1f,0x24,0x32,0xdf,0x38,0x30,0x89,0x93,0xeb,0xc9,0xec,0xf1,0x09,0x51, - 0xbb,0x00,0x07,0x88,0xa0,0x00,0x0a,0x0a,0x69,0xa2,0x65,0x55,0xb3,0x79,0x02,0x66, - 0xe4,0x59,0x8d,0x1d,0x3c,0x41,0x5f,0x57,0x2a,0x84,0x88,0x83,0x0b,0x60,0xf7,0xe7, - 0x44,0xed,0x92,0x35,0xeb,0x0b,0x1b,0xa9,0x32,0x83,0xb3,0x15,0xc0,0x35,0x18,0x02, - 0x66,0xe4,0x4a,0x55,0x4e,0x49,0x4f,0x52,0x42,0x45,0x41,0x4d,0x2d,0x72,0x63,0x31, - 0x2d,0x31,0x2d,0x67,0x63,0x63,0x65,0x34,0x66,0x36,0x38,0x2d,0x6d,0x6f,0x64,0x64, - 0x65,0x64,0x00,0x00, -}; - -/* not_mcf sets NDEBUG, so assert() is useless */ -#define ASSERT(x) do { if (!(x)) abort(); } while(0) - -static const char *print_flows( - const tal_t *ctx, - const char *desc, - const struct gossmap *gossmap, - struct flow **flows) -{ - tal_t *this_ctx = tal(ctx,tal_t); - char *buff = tal_fmt(ctx,"%s: %zu subflows\n", desc, tal_count(flows)); - for (size_t i = 0; i < tal_count(flows); i++) { - struct amount_msat fee, delivered; - tal_append_fmt(&buff," "); - for (size_t j = 0; j < tal_count(flows[i]->path); j++) { - struct short_channel_id scid - = gossmap_chan_scid(gossmap, - flows[i]->path[j]); - tal_append_fmt(&buff,"%s%s", j ? "->" : "", - fmt_short_channel_id(this_ctx, scid)); - } - delivered = flows[i]->amount; - if (!flow_fee(&fee, flows[i])) - abort(); - tal_append_fmt(&buff," prob %.2f, %s delivered with fee %s\n", - flows[i]->success_prob, - fmt_amount_msat(this_ctx, delivered), - fmt_amount_msat(this_ctx, fee)); - } - tal_free(this_ctx); - return buff; -} - -static void remove_file(char *fname) { assert(!remove(fname)); } - -int main(int argc, char *argv[]) -{ - int fd; - char *gossfile; - struct gossmap *gossmap; - struct node_id l1, l2, l3; - struct flow **flows; - struct route **routes; - struct short_channel_id scid12, scid23; - struct sha256 payment_hash; - struct amount_msat *amounts; - char *errmsg; - - if (!hex_decode("0001020304050607080900010203040506070809000102030405060708090102", - strlen("0001020304050607080900010203040506070809000102030405060708090102"), - &payment_hash, sizeof(payment_hash))) - abort(); - - common_setup(argv[0]); - - fd = tmpdir_mkstemp(tmpctx, "run-not_mcf.XXXXXX", &gossfile); - tal_add_destructor(gossfile, remove_file); - assert(write_all(fd, canned_map, sizeof(canned_map))); - - gossmap = gossmap_load(tmpctx, gossfile, NULL, NULL); - assert(gossmap); - - /* There is a public channel 2<->3 (103x1x0), and 1<->2 (110x1x1). */ - assert(node_id_from_hexstr("0266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c03518", 66, &l1)); - assert(node_id_from_hexstr("022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59", 66, &l2)); - assert(node_id_from_hexstr("035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d", 66, &l3)); - assert(short_channel_id_from_str("110x1x0", 7, &scid12)); - assert(short_channel_id_from_str("103x1x0", 7, &scid23)); - - struct uncertainty *uncertainty = uncertainty_new(tmpctx); - int skipped_count = uncertainty_update(uncertainty, gossmap); - assert(skipped_count == 0); - - bitmap *disabled = tal_arrz( - tmpctx, bitmap, 2 * BITMAP_NWORDS(gossmap_max_chan_idx(gossmap))); - - printf("All set, now let's call minflow ...\n"); - - flows = minflow(tmpctx, gossmap, - gossmap_find_node(gossmap, &l1), - gossmap_find_node(gossmap, &l3), - uncertainty_get_chan_extra_map(uncertainty), - disabled, - /* Half the capacity */ - AMOUNT_MSAT(500000000), - /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats - /* min probability = */ 0.1, - /* base probability = */ 1.0, - /* delay fee factor = */ 1, - /* base fee penalty */ 1, - /* prob cost factor = */ 10, - &errmsg); - printf("minflow completed.\n"); - - if (!flows) { - printf("Minflow has failed with: %s", errmsg); - assert(0 && "minflow failed"); - } - - routes = flows_to_routes(tmpctx, 1, 1, payment_hash, 10, gossmap, flows); - assert(routes); - for (size_t i = 0; i < tal_count(routes); i++) { - uncertainty_commit_htlcs(uncertainty, routes[i]); - } - - printf("%s\n", - print_flows(tmpctx,"Flow via single path l1->l2->l3", gossmap, flows)); - - - printf("Checking results.\n"); - /* Should go 1->2->3 */ - amounts = tal_flow_amounts(tmpctx, flows[0], true); - assert(amounts); - assert(tal_count(flows) == 1); - assert(tal_count(flows[0]->path) == 2); - assert(tal_count(flows[0]->dirs) == 2); - assert(tal_count(amounts) == 2); - - assert(flows[0]->path[0] == gossmap_find_chan(gossmap, &scid12)); - assert(flows[0]->path[1] == gossmap_find_chan(gossmap, &scid23)); - assert(flows[0]->dirs[0] == 1); - assert(flows[0]->dirs[1] == 0); - assert(amount_msat_eq(amounts[1], AMOUNT_MSAT(500000000))); - /* fee_base_msat == 20, fee_proportional_millionths == 1000 */ - assert(amount_msat_eq(amounts[0], AMOUNT_MSAT(500000000 + 500000 + 20))); - - /* Each one has probability ~ 0.5 */ - assert(flows[0]->success_prob > 0.249); - assert(flows[0]->success_prob <= 0.251); - - - /* Should have filled in some extra data! */ - struct chan_extra *ce = uncertainty_find_channel(uncertainty, scid12); - assert(short_channel_id_eq(ce->scid, scid12)); - /* l1->l2 dir is 1 */ - assert(ce->half[1].num_htlcs == 1); - assert(amount_msat_eq(ce->half[1].htlc_total, AMOUNT_MSAT(500000000 + 500000 + 20))); - assert(amount_msat_eq(ce->half[1].known_min, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[1].known_max, AMOUNT_MSAT(1000000000))); - assert(ce->half[0].num_htlcs == 0); - assert(amount_msat_eq(ce->half[0].htlc_total, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[0].known_min, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[0].known_max, AMOUNT_MSAT(1000000000))); - - ce = uncertainty_find_channel(uncertainty, scid23); - assert(short_channel_id_eq(ce->scid, scid23)); - /* l2->l3 dir is 0 */ - assert(ce->half[0].num_htlcs == 1); - assert(amount_msat_eq(ce->half[0].htlc_total, AMOUNT_MSAT(500000000))); - assert(amount_msat_eq(ce->half[0].known_min, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[0].known_max, AMOUNT_MSAT(1000000000))); - assert(ce->half[1].num_htlcs == 0); - assert(amount_msat_eq(ce->half[1].htlc_total, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[1].known_min, AMOUNT_MSAT(0))); - assert(amount_msat_eq(ce->half[1].known_max, AMOUNT_MSAT(1000000000))); - - /* Clear that */ - for (size_t i = 0; i < tal_count(routes); i++) { - uncertainty_remove_htlcs(uncertainty, routes[i]); - } - - // /* Now try adding a local channel scid */ - - struct short_channel_id scid13; - struct gossmap_localmods *mods = gossmap_localmods_new(tmpctx); - assert(short_channel_id_from_str("111x1x1", 7, &scid13)); - - /* 400,000sat channel from 1->3, basefee 0, ppm 1000, delay 5 */ - assert(gossmap_local_addchan(mods, &l1, &l3, scid13, - AMOUNT_MSAT(400000000), NULL)); - assert(gossmap_local_setchan(mods, scid13, - AMOUNT_MSAT(0), - AMOUNT_MSAT(400000000), - AMOUNT_MSAT(0), 1000, 5, - true, - 0)); - - /* Apply changes, check they work. */ - gossmap_apply_localmods(gossmap, mods); - struct gossmap_chan *local_chan = gossmap_find_chan(gossmap, &scid13); - assert(local_chan); - - /* The local chans have no "capacity", so set it manually. */ - /* FIXME: They do now! */ - uncertainty_add_channel(uncertainty, scid13, AMOUNT_MSAT(400000000)); - - // flows = minflow(tmpctx, gossmap, - // gossmap_find_node(gossmap, &l1), - // gossmap_find_node(gossmap, &l3), - // chan_extra_map, NULL, - // /* This will go first via 1-2-3, then 1->3. */ - // AMOUNT_MSAT(500000000), - // /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats - // /* min probability = */ 0.4, - // /* delay fee factor = */ 1, - // /* base fee penalty */ 1, - // /* prob cost factor = */ 10); - - // print_flows("Flow via two paths, low mu", gossmap, flows); - - // assert(tal_count(flows) == 2); - // - // if(tal_count(flows[0]->path)path)) - // { - // struct flow* tmp = flows[0]; - // flows[0] = flows[1]; - // flows[1]=tmp; - // } - // - // assert(tal_count(flows[0]->path) == 2); - // assert(tal_count(flows[0]->dirs) == 2); - // assert(tal_count(flows[0]->amounts) == 2); - - // assert(flows[0]->path[0] == gossmap_find_chan(gossmap, &scid12)); - // assert(flows[0]->path[1] == gossmap_find_chan(gossmap, &scid23)); - // assert(flows[0]->dirs[0] == 1); - // assert(flows[0]->dirs[1] == 0); - - // /* First one has probability ~ 50% */ - // assert(flows[0]->success_prob < 0.55); - // assert(flows[0]->success_prob > 0.45); - - // assert(tal_count(flows[1]->path) == 1); - // assert(tal_count(flows[1]->dirs) == 1); - // assert(tal_count(flows[1]->amounts) == 1); - - // /* We will try cheaper path first, but not to fill it! */ - // assert(flows[1]->path[0] == gossmap_find_chan(gossmap, &scid13)); - // assert(flows[1]->dirs[0] == 0); - // assert(amount_msat_less(flows[1]->amounts[0], AMOUNT_MSAT(400000000))); - - // /* Second one has probability ~ 50% */ - // assert(flows[1]->success_prob < 0.55); - // assert(flows[1]->success_prob > 0.45); - - // /* Delivered amount must be the total! */ - // assert(flows[0]->amounts[1].millisatoshis - // + flows[1]->amounts[0].millisatoshis == 500000000); - - // /* Clear them. */ - // remove_completed_flow(gossmap, chan_extra_map, flows[0]); - // remove_completed_flow(gossmap, chan_extra_map, flows[1]); - - printf("All set, let's call minflow ... \n"); - - /* Higher mu values mean we pay more for certainty! */ - struct flow **flows2 = minflow(tmpctx, gossmap, - gossmap_find_node(gossmap, &l1), - gossmap_find_node(gossmap, &l3), - uncertainty_get_chan_extra_map(uncertainty), - disabled, - /* This will go 400000000 via 1->3, rest via 1-2-3. */ - /* amount = */ AMOUNT_MSAT(500000000), //500k sats - /* max_fee = */ AMOUNT_MSAT(1000000), // 1k sats - /* min probability = */ 0.1, // 10% - /* base probability = */ 1.0, - /* delay fee factor = */ 1, - /* base fee penalty */ 1, - /* prob cost factor = */ 10, - &errmsg); - - printf("minflow completed execution.\n"); - - if (!flows) { - printf("Minflow has failed with: %s", errmsg); - assert(0 && "minflow failed"); - } - printf("%s\n", - print_flows(tmpctx,"Flow via two paths, high mu", gossmap, flows2)); - - printf("Verifying results ... \n"); - - assert(tal_count(flows2) == 2); - - /* The solution is composed by two paths, one with lenght 1 and the - * other with lenght 2. There is no guaranteed order of the solutions - * returning from minflow, hence we need to test them. */ - int ID1 = 0, ID2 = 1; - if(tal_count(flows2[ID1]->path)==2) - { - swap(&ID1,&ID2); - } - assert(tal_count(flows2[ID1]->path) == 1); - assert(tal_count(flows2[ID2]->path) == 2); - - // /* Sends more via 1->3, since it's more expensive (but lower prob) */ - assert(amount_msat_greater(flows2[ID1]->amount, flows2[ID2]->amount)); - assert(flows2[ID1]->success_prob < flows2[ID2]->success_prob); - - /* Delivered amount must be the total! */ - assert(flows2[ID1]->amount.millisatoshis - + flows2[ID2]->amount.millisatoshis == 500000000); - - common_shutdown(); -} diff --git a/plugins/renepay/test/run-route_map.c b/plugins/renepay/test/run-route_map.c index 5dad081810a1..980f3d887fe7 100644 --- a/plugins/renepay/test/run-route_map.c +++ b/plugins/renepay/test/run-route_map.c @@ -17,7 +17,6 @@ #include #define RENEPAY_UNITTEST -#include "../flow.c" #include "../route.c" /* AUTOGENERATED MOCKS START */ diff --git a/plugins/renepay/test/run-testflow.c b/plugins/renepay/test/run-testflow.c deleted file mode 100644 index 83ffe80e3766..000000000000 --- a/plugins/renepay/test/run-testflow.c +++ /dev/null @@ -1,842 +0,0 @@ -#include "config.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define MYLOG "/tmp/debug.txt" -#define RENEPAY_UNITTEST // logs are written in MYLOG -#include "../payment.c" -#include "../flow.c" -#include "../route.c" -#include "../uncertainty.c" -#include "../mcf.c" - -/* AUTOGENERATED MOCKS START */ -/* Generated stub for disabledmap_add_channel */ -void disabledmap_add_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_add_channel called!\n"); abort(); } -/* Generated stub for disabledmap_add_node */ -void disabledmap_add_node(struct disabledmap *p UNNEEDED, struct node_id node UNNEEDED) -{ fprintf(stderr, "disabledmap_add_node called!\n"); abort(); } -/* Generated stub for disabledmap_channel_is_warned */ -bool disabledmap_channel_is_warned(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_channel_is_warned called!\n"); abort(); } -/* Generated stub for disabledmap_new */ -struct disabledmap *disabledmap_new(const tal_t *ctx UNNEEDED) -{ fprintf(stderr, "disabledmap_new called!\n"); abort(); } -/* Generated stub for disabledmap_reset */ -void disabledmap_reset(struct disabledmap *p UNNEEDED) -{ fprintf(stderr, "disabledmap_reset called!\n"); abort(); } -/* Generated stub for disabledmap_warn_channel */ -void disabledmap_warn_channel(struct disabledmap *p UNNEEDED, - struct short_channel_id_dir scidd UNNEEDED) -{ fprintf(stderr, "disabledmap_warn_channel called!\n"); abort(); } -/* Generated stub for json_add_payment */ -void json_add_payment(struct json_stream *s UNNEEDED, const struct payment *payment UNNEEDED) -{ fprintf(stderr, "json_add_payment called!\n"); abort(); } -/* Generated stub for new_routetracker */ -struct routetracker *new_routetracker(const tal_t *ctx UNNEEDED, struct payment *payment UNNEEDED) -{ fprintf(stderr, "new_routetracker called!\n"); abort(); } -/* Generated stub for pay_plugin */ -struct pay_plugin *pay_plugin; -/* Generated stub for routetracker_cleanup */ -void routetracker_cleanup(struct routetracker *routetracker UNNEEDED) -{ fprintf(stderr, "routetracker_cleanup called!\n"); abort(); } -/* Generated stub for sciddir_or_pubkey_from_node_id */ -bool sciddir_or_pubkey_from_node_id(struct sciddir_or_pubkey *sciddpk UNNEEDED, - const struct node_id *node_id UNNEEDED) -{ fprintf(stderr, "sciddir_or_pubkey_from_node_id called!\n"); abort(); } -/* AUTOGENERATED MOCKS END */ - -static const u8 canned_map[] = { -0x0c, 0x80, 0x00, 0x01, 0xbc, 0x86, 0xe4, 0xbf, 0x95, 0x00, 0x00, 0x00, 0x00, 0x10, 0x08, 0x00, -0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40, 0x01, 0xb0, 0x01, 0x00, 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= AMOUNT_MSAT(0); // in flight - struct amount_msat f; - - for(int i=0;i<=min.millisatoshis;++i) - { - f.millisatoshis = i; - // prob = 1 - assert(fabs(edge_probability(min,max,X,f)-1.0)< eps); - } - for(int i=max.millisatoshis+1;i<=100;++i) - { - f.millisatoshis = i; - // prob = 0 - assert(fabs(edge_probability(min,max,X,f))< eps); - } - f.millisatoshis=11; - assert(fabs(edge_probability(min,max,X,f)-0.9)< eps); - - f.millisatoshis=12; - assert(fabs(edge_probability(min,max,X,f)-0.8)< eps); - - f.millisatoshis=13; - assert(fabs(edge_probability(min,max,X,f)-0.7)< eps); - - f.millisatoshis=14; - assert(fabs(edge_probability(min,max,X,f)-0.6)< eps); - - f.millisatoshis=15; - assert(fabs(edge_probability(min,max,X,f)-0.5)< eps); - - f.millisatoshis=16; - assert(fabs(edge_probability(min,max,X,f)-0.4)< eps); - - f.millisatoshis=17; - assert(fabs(edge_probability(min,max,X,f)-0.3)< eps); - - f.millisatoshis=18; - assert(fabs(edge_probability(min,max,X,f)-0.2)< eps); - - f.millisatoshis=19; - assert(fabs(edge_probability(min,max,X,f)-0.1)< eps); - - X = AMOUNT_MSAT(5); - - // X=B-X - for(int i=15;i<100;++i) - { - f.millisatoshis = i; - // prob = 0 - assert(fabs(edge_probability(min,max,X,f))< eps); - } - // X=B-X - for(int i=5;i<100;++i) - { - f.millisatoshis = i; - assert(fabs(edge_probability(min,max,X,f))< eps); - } - - // X>=A, 0<=f<=B-X - f.millisatoshis=0; - assert(fabs(edge_probability(min,max,X,f)-1.0)< eps); - f.millisatoshis=1; - assert(fabs(edge_probability(min,max,X,f)-0.8)< eps); - f.millisatoshis=2; - assert(fabs(edge_probability(min,max,X,f)-0.6)< eps); - f.millisatoshis=3; - assert(fabs(edge_probability(min,max,X,f)-0.4)< eps); - f.millisatoshis=4; - assert(fabs(edge_probability(min,max,X,f)-0.2)< eps); - f.millisatoshis=5; - assert(fabs(edge_probability(min,max,X,f)-0.0)< eps); -} - -static void remove_file(char *fname) { assert(!remove(fname)); } - -static void test_flow_to_route(void) -{ - const double eps = 1e-8; - - const tal_t *this_ctx = tal(tmpctx, tal_t); - - char *gossfile; - int fd = tmpdir_mkstemp(this_ctx,"run-testflow.XXXXXX",&gossfile); - tal_add_destructor(gossfile, remove_file); - - assert(write_all(fd,canned_map,sizeof(canned_map))); - struct gossmap *gossmap = gossmap_load(this_ctx,gossfile,NULL,NULL); - assert(gossmap); - - // for(struct gossmap_node *node = gossmap_first_node(gossmap); - // node; - // node=gossmap_next_node(gossmap,node)) - // { - // struct node_id node_id; - // gossmap_node_get_id(gossmap,node,&node_id); - // const char *node_hex = node_id_to_hexstr(this_ctx,&node_id); - // printf("node: %s\n",node_hex); - // for(size_t i=0;inum_chans;++i) - // { - // int half; - // const struct gossmap_chan *c = gossmap_nth_chan(gossmap,node,i,&half); - // if(!gossmap_chan_set(c,half)) - // continue; - // - // const struct short_channel_id scid = gossmap_chan_scid(gossmap,c); - // - // const char *scid_str = short_channel_id_to_str(this_ctx,&scid); - // - // printf(" scid: %s, half: %d\n",scid_str,half); - // } - // } - - struct node_id l1, l2, l3, l4, l5; - assert(node_id_from_hexstr("024f9da0d726adf0d9a4a3ac32e328b93ad527ccb9db7077c57a12c6f9fa9add74", 66, &l1)); - assert(node_id_from_hexstr("037f97af8e4fa67c9b8d6970849536f888c304316d015af5129e268e0164961b5e", 66, &l2)); - assert(node_id_from_hexstr("02451e9baff81faf5f410b0bbe9e36ee83bf8f79698e6605a51a9748bc73c7dc28", 66, &l3)); - assert(node_id_from_hexstr("02d1ab24fe53cfcac4a477745235c7ac3e75161a5bf8426ea8e0182ad58cab367f", 66, &l4)); - assert(node_id_from_hexstr("03caec54085508da06f14ffb836166ca22042d0fda69690356232a24b8366c8f85", 66, &l5)); - - struct short_channel_id scid12, scid23, scid34,scid45; - assert(short_channel_id_from_str("113x1x1", 7, &scid12)); - assert(short_channel_id_from_str("113x3x1", 7, &scid23)); - assert(short_channel_id_from_str("113x2x0", 7, &scid34)); - assert(short_channel_id_from_str("113x4x1", 7, &scid45)); - - struct chan_extra_map *chan_extra_map = tal(this_ctx, struct chan_extra_map); - chan_extra_map_init(chan_extra_map); - - struct chan_extra_half *h0,*h1; - struct gossmap_chan *c; - struct amount_msat cap; - struct amount_msat sum_min1_max0,sum_min0_max1; - - // check the bounds channel 1--2 - c = gossmap_find_chan(gossmap,&scid12); - cap = gossmap_chan_get_capacity(gossmap,c); - - h0 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,0); - assert(h0); - h0->known_min = AMOUNT_MSAT(0); - h0->known_max = AMOUNT_MSAT(500000000); - - h1 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,1); - assert(h1); - h1->known_min = AMOUNT_MSAT(500000000); - h1->known_max = AMOUNT_MSAT(1000000000); - - assert(amount_msat_less_eq(h0->known_min,h0->known_max)); - assert(amount_msat_less_eq(h0->known_max,cap)); - assert(amount_msat_less_eq(h1->known_min,h1->known_max)); - assert(amount_msat_less_eq(h1->known_max,cap)); - assert(amount_msat_add(&sum_min1_max0,h1->known_min,h0->known_max)); - assert(amount_msat_add(&sum_min0_max1,h0->known_min,h1->known_max)); - assert(amount_msat_eq(sum_min1_max0,cap)); - assert(amount_msat_eq(sum_min0_max1,cap)); - - // check the bounds channel 2--3 - c = gossmap_find_chan(gossmap,&scid23); - cap = gossmap_chan_get_capacity(gossmap,c); - - h1 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,1); - assert(h1); - h1->known_min = AMOUNT_MSAT(0); - h1->known_max = AMOUNT_MSAT(2000000000); - - h0 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,0); - assert(h0); - h0->known_min = AMOUNT_MSAT(0); - h0->known_max = AMOUNT_MSAT(2000000000); - - assert(amount_msat_less_eq(h0->known_min,h0->known_max)); - assert(amount_msat_less_eq(h0->known_max,cap)); - assert(amount_msat_less_eq(h1->known_min,h1->known_max)); - assert(amount_msat_less_eq(h1->known_max,cap)); - assert(amount_msat_add(&sum_min1_max0,h1->known_min,h0->known_max)); - assert(amount_msat_add(&sum_min0_max1,h0->known_min,h1->known_max)); - assert(amount_msat_eq(sum_min1_max0,cap)); - assert(amount_msat_eq(sum_min0_max1,cap)); - - // check the bounds channel 3--4 - c = gossmap_find_chan(gossmap,&scid34); - cap = gossmap_chan_get_capacity(gossmap,c); - - h0 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,0); - assert(h0); - h0->known_min = AMOUNT_MSAT(500000000); - h0->known_max = AMOUNT_MSAT(1000000000); - - h1 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,1); - assert(h1); - h1->known_min = AMOUNT_MSAT(0); - h1->known_max = AMOUNT_MSAT(500000000); - - assert(amount_msat_less_eq(h0->known_min,h0->known_max)); - assert(amount_msat_less_eq(h0->known_max,cap)); - assert(amount_msat_less_eq(h1->known_min,h1->known_max)); - assert(amount_msat_less_eq(h1->known_max,cap)); - assert(amount_msat_add(&sum_min1_max0,h1->known_min,h0->known_max)); - assert(amount_msat_add(&sum_min0_max1,h0->known_min,h1->known_max)); - assert(amount_msat_eq(sum_min1_max0,cap)); - assert(amount_msat_eq(sum_min0_max1,cap)); - - // check the bounds channel 4--5 - c = gossmap_find_chan(gossmap,&scid45); - cap = gossmap_chan_get_capacity(gossmap,c); - - h0 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,0); - assert(h0); - h0->known_min = AMOUNT_MSAT(1000000000); - h0->known_max = AMOUNT_MSAT(2000000000); - - h1 = get_chan_extra_half_by_chan_verify(gossmap,chan_extra_map,c,1); - assert(h1); - h1->known_min = AMOUNT_MSAT(1000000000); - h1->known_max = AMOUNT_MSAT(2000000000); - - assert(amount_msat_less_eq(h0->known_min,h0->known_max)); - assert(amount_msat_less_eq(h0->known_max,cap)); - assert(amount_msat_less_eq(h1->known_min,h1->known_max)); - assert(amount_msat_less_eq(h1->known_max,cap)); - assert(amount_msat_add(&sum_min1_max0,h1->known_min,h0->known_max)); - assert(amount_msat_add(&sum_min0_max1,h0->known_min,h1->known_max)); - assert(amount_msat_eq(sum_min1_max0,cap)); - assert(amount_msat_eq(sum_min0_max1,cap)); - - struct flow *F; - struct route *route; - struct sha256 payment_hash; - struct amount_msat deliver; - - if (!hex_decode("0001020304050607080900010203040506070809000102030405060708090102", - strlen("0001020304050607080900010203040506070809000102030405060708090102"), - &payment_hash, sizeof(payment_hash))) - abort(); - - // flow 1->2 - F = tal(this_ctx, struct flow); - F->path = tal_arr(F,const struct gossmap_chan *,1); - F->dirs = tal_arr(F,int,1); - F->path[0]=gossmap_find_chan(gossmap,&scid12); - F->dirs[0]=0; - deliver = AMOUNT_MSAT(250000000); - F->amount = deliver; - route = flow_to_route(this_ctx, 1, 1, payment_hash, 0, gossmap, F, false); - assert(route); - - assert(amount_msat_eq(route->hops[0].amount, deliver)); - assert(fabs(flow_probability(F, gossmap, chan_extra_map, true) - 0.5)4->5 - F = tal(this_ctx, struct flow); - F->path = tal_arr(F,const struct gossmap_chan *,2); - F->dirs = tal_arr(F,int,2); - F->path[0]=gossmap_find_chan(gossmap,&scid34); - F->path[1]=gossmap_find_chan(gossmap,&scid45); - F->dirs[0]=0; - F->dirs[1]=0; - deliver = AMOUNT_MSAT(250000000); - F->amount=deliver; - route = flow_to_route(this_ctx, 1, 1, payment_hash, 0, gossmap, F, false); - assert(route); - - assert(amount_msat_eq(route->hops[0].amount, amount_msat(250050016))); - assert(fabs(flow_probability(F, gossmap, chan_extra_map, true) - 1.)3->4->5 - F = tal(this_ctx, struct flow); - F->path = tal_arr(F,const struct gossmap_chan *,3); - F->dirs = tal_arr(F,int,3); - F->path[0]=gossmap_find_chan(gossmap,&scid23); - F->path[1]=gossmap_find_chan(gossmap,&scid34); - F->path[2]=gossmap_find_chan(gossmap,&scid45); - F->dirs[0]=1; - F->dirs[1]=0; - F->dirs[2]=0; - deliver = AMOUNT_MSAT(250000000); - F->amount=deliver; - route = flow_to_route(this_ctx, 1, 1, payment_hash, 0, gossmap, F, false); - assert(route); - - assert(amount_msat_eq(route->hops[0].amount, amount_msat(250087534))); - assert(fabs(flow_probability(F, gossmap, chan_extra_map, true) - 1. + 250.087534/2000)2->3->4->5 - F = tal(this_ctx, struct flow); - F->path = tal_arr(F,const struct gossmap_chan *,4); - F->dirs = tal_arr(F,int,4); - F->path[0]=gossmap_find_chan(gossmap,&scid12); - F->path[1]=gossmap_find_chan(gossmap,&scid23); - F->path[2]=gossmap_find_chan(gossmap,&scid34); - F->path[3]=gossmap_find_chan(gossmap,&scid45); - F->dirs[0]=0; - F->dirs[1]=1; - F->dirs[2]=0; - F->dirs[3]=0; - deliver = AMOUNT_MSAT(250000000); - F->amount=deliver; - route = flow_to_route(this_ctx, 1, 1, payment_hash, 0, gossmap, F, false); - assert(route); - - assert(amount_msat_eq(route->hops[0].amount, amount_msat(250112544))); - assert(fabs(flow_probability(F, gossmap, chan_extra_map, true) - 0.43728117)half[0].base_fee = basefee; - c->half[0].proportional_fee = ppm; - struct amount_msat out; - - assert(channel_maximum_forward( - &out, c, 0, in) == RENEPAY_NOERROR); - - // do we satisfy the fee constraint? - assert(check_fee_inequality(in, out, basefee, - ppm)); - - // is this the best we can do? - assert( - amount_msat_add(&out, out, amount_msat(1))); - assert(!check_fee_inequality(in, out, basefee, - ppm)); - } - } - } - tal_free(this_ctx); -} - -int main(int argc, char *argv[]) -{ - common_setup(argv[0]); - - test_edge_probability(); - test_flow_to_route(); - test_channel_maximum_forward(); - - common_shutdown(); -} - diff --git a/plugins/renepay/uncertainty.c b/plugins/renepay/uncertainty.c deleted file mode 100644 index 15ca19288aef..000000000000 --- a/plugins/renepay/uncertainty.c +++ /dev/null @@ -1,198 +0,0 @@ -#include "config.h" -#include -#include - -void uncertainty_route_success(struct uncertainty *uncertainty, - const struct route *route) -{ - if (!route->hops) - return; - - for (size_t i = 0; i < tal_count(route->hops); i++) { - const struct route_hop *hop = &route->hops[i]; - struct short_channel_id_dir scidd = {hop->scid, hop->direction}; - - // FIXME: check errors here, report back - chan_extra_sent_success(uncertainty->chan_extra_map, &scidd, - route->hops[i].amount); - } -} -void uncertainty_remove_htlcs(struct uncertainty *uncertainty, - const struct route *route) -{ - // FIXME: how could we get the route details of a sendpay that we did - // not send? - if (!route->hops) - return; - - const size_t pathlen = tal_count(route->hops); - for (size_t i = 0; i < pathlen; i++) { - const struct route_hop *hop = &route->hops[i]; - struct short_channel_id_dir scidd = {hop->scid, hop->direction}; - - // FIXME: check error - chan_extra_remove_htlc(uncertainty->chan_extra_map, &scidd, - hop->amount); - } -} - -void uncertainty_commit_htlcs(struct uncertainty *uncertainty, - const struct route *route) -{ - // FIXME: how could we get the route details of a sendpay that we did - // not send? - if (!route->hops) - return; - - const size_t pathlen = tal_count(route->hops); - for (size_t i = 0; i < pathlen; i++) { - const struct route_hop *hop = &route->hops[i]; - struct short_channel_id_dir scidd = {hop->scid, hop->direction}; - - // FIXME: check error - chan_extra_commit_htlc(uncertainty->chan_extra_map, &scidd, - hop->amount); - } -} - -void uncertainty_channel_can_send(struct uncertainty *uncertainty, - struct short_channel_id scid, int direction) -{ - struct short_channel_id_dir scidd = {scid, direction}; - // FIXME: check error - chan_extra_can_send(uncertainty->chan_extra_map, &scidd); -} -void uncertainty_channel_cannot_send(struct uncertainty *uncertainty, - struct short_channel_id scid, - int direction) -{ - struct short_channel_id_dir scidd = {scid, direction}; - // FIXME: check error - chan_extra_cannot_send(uncertainty->chan_extra_map, &scidd); -} - -int uncertainty_update(struct uncertainty *uncertainty, struct gossmap *gossmap) -{ - /* Each channel in chan_extra_map should be either in gossmap or in - * local_gossmods. */ - assert(uncertainty); - struct chan_extra_map *chan_extra_map = uncertainty->chan_extra_map; - assert(chan_extra_map); - struct chan_extra **del_list = tal_arr(NULL, struct chan_extra*, 0); - struct chan_extra_map_iter it; - for (struct chan_extra *ch = chan_extra_map_first(chan_extra_map, &it); - ch; ch = chan_extra_map_next(chan_extra_map, &it)) { - - /* If we cannot find that channel in the gossmap, add it to the - * delete list. */ - if (!gossmap_find_chan(gossmap, &ch->scid)) - tal_arr_expand(&del_list, ch); - } - for(size_t i=0;ichan_extra_map = tal(uncertainty, struct chan_extra_map); - if (uncertainty->chan_extra_map == NULL) - goto function_fail; - - chan_extra_map_init(uncertainty->chan_extra_map); - - return uncertainty; - -function_fail: - return tal_free(uncertainty); -} - -struct chan_extra_map * -uncertainty_get_chan_extra_map(struct uncertainty *uncertainty) -{ - // TODO: do we really need this function? - return uncertainty->chan_extra_map; -} - -/* Add channel to the Uncertainty Network if it doesn't already exist. */ -struct chan_extra * -uncertainty_add_channel(struct uncertainty *uncertainty, - const struct short_channel_id scid, - struct amount_msat capacity) -{ - struct chan_extra *ce = - chan_extra_map_get(uncertainty->chan_extra_map, scid); - if (ce) - return ce; - - return new_chan_extra(uncertainty->chan_extra_map, scid, capacity); -} - -bool uncertainty_set_liquidity(struct uncertainty *uncertainty, - const struct short_channel_id_dir *scidd, - struct amount_msat min, - struct amount_msat max) -{ - // FIXME check error - enum renepay_errorcode err = chan_extra_set_liquidity( - uncertainty->chan_extra_map, scidd, min, max); - - return err == RENEPAY_NOERROR; -} - -struct chan_extra *uncertainty_find_channel(struct uncertainty *uncertainty, - const struct short_channel_id scid) -{ - return chan_extra_map_get(uncertainty->chan_extra_map, scid); -} - -enum renepay_errorcode uncertainty_relax(struct uncertainty *uncertainty, - double seconds) -{ - assert(seconds >= 0); - const double fraction = MIN(seconds / TIMER_FORGET_SEC, 1.0); - struct chan_extra_map *chan_extra_map = - uncertainty_get_chan_extra_map(uncertainty); - struct chan_extra_map_iter it; - for (struct chan_extra *ce = chan_extra_map_first(chan_extra_map, &it); - ce; ce = chan_extra_map_next(chan_extra_map, &it)) { - enum renepay_errorcode err = - chan_extra_relax_fraction(ce, fraction); - - if (err) - return err; - } - return RENEPAY_NOERROR; -} diff --git a/plugins/renepay/uncertainty.h b/plugins/renepay/uncertainty.h deleted file mode 100644 index 8ae65eab6c99..000000000000 --- a/plugins/renepay/uncertainty.h +++ /dev/null @@ -1,69 +0,0 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_UNCERTAINTY_H -#define LIGHTNING_PLUGINS_RENEPAY_UNCERTAINTY_H -#include "config.h" -#include -#include -#include -#include - -/* FIXME a hard coded constant to indicate a limit on any channel - capacity. Channels for which the capacity is unknown (because they are not - announced) use this value. It makes sense, because if we don't even know the - channel capacity the liquidity could be anything but it will never be greater - than the global number of msats. - It remains to be checked if this value does not lead to overflow somewhere in - the code. */ -#define MAX_CAPACITY (AMOUNT_MSAT(21000000 * MSAT_PER_BTC)) - -struct uncertainty { - struct chan_extra_map *chan_extra_map; -}; - -/* FIXME: add bool return value and WARN_UNUSED_RESULT */ -void uncertainty_route_success(struct uncertainty *uncertainty, - const struct route *route); -void uncertainty_remove_htlcs(struct uncertainty *uncertainty, - const struct route *route); - -void uncertainty_commit_htlcs(struct uncertainty *uncertainty, - const struct route *route); - -void uncertainty_channel_can_send(struct uncertainty *uncertainty, - struct short_channel_id scid, int direction); - -void uncertainty_channel_cannot_send(struct uncertainty *uncertainty, - struct short_channel_id scid, - int direction); - -WARN_UNUSED_RESULT int uncertainty_update(struct uncertainty *uncertainty, - struct gossmap *gossmap); - -struct uncertainty *uncertainty_new(const tal_t *ctx); - -struct chan_extra_map * -uncertainty_get_chan_extra_map(struct uncertainty *uncertainty); - -struct chan_extra * -uncertainty_add_channel(struct uncertainty *uncertainty, - const struct short_channel_id scid, - struct amount_msat capacity); - -bool uncertainty_set_liquidity(struct uncertainty *uncertainty, - const struct short_channel_id_dir *scidd, - struct amount_msat min, - struct amount_msat max); - -struct chan_extra *uncertainty_find_channel(struct uncertainty *uncertainty, - const struct short_channel_id scid); - -/* Adds randomness to the current state simulating the natural evolution of the - * liquidity in the network. It should be a markovian process with the minimum - * requirement that the transition operator T satisfies: - * T(t1) T(t2) = T(t1+t2) - * i.e. the transition operator is a one parameter semigroup. - * For the moment we omit the continuous and linear aspects of the problem for a - * lack for formulation. */ -enum renepay_errorcode uncertainty_relax(struct uncertainty *uncertainty, - double seconds); - -#endif /* LIGHTNING_PLUGINS_RENEPAY_UNCERTAINTY_H */ From b7d46c860d467fd202a68f4e69dd8b2e74a7997d Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Fri, 21 Feb 2025 08:47:25 +0100 Subject: [PATCH 10/22] renepay: add rpc batching utilities Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/Makefile | 2 + plugins/renepay/utils.c | 101 +++++++++++++++++++++++++++++++++++++++ plugins/renepay/utils.h | 57 ++++++++++++++++++++++ 3 files changed, 160 insertions(+) create mode 100644 plugins/renepay/utils.c create mode 100644 plugins/renepay/utils.h diff --git a/plugins/renepay/Makefile b/plugins/renepay/Makefile index aac733e5b530..9e539dd41ee9 100644 --- a/plugins/renepay/Makefile +++ b/plugins/renepay/Makefile @@ -7,6 +7,7 @@ PLUGIN_RENEPAY_SRC := \ plugins/renepay/sendpay.c \ plugins/renepay/mods.c \ plugins/renepay/errorcodes.c \ + plugins/renepay/utils.c \ plugins/renepay/json.c PLUGIN_RENEPAY_HDRS := \ @@ -20,6 +21,7 @@ PLUGIN_RENEPAY_HDRS := \ plugins/renepay/sendpay.h \ plugins/renepay/mods.h \ plugins/renepay/errorcodes.h \ + plugins/renepay/utils.h \ plugins/renepay/json.c PLUGIN_RENEPAY_OBJS := $(PLUGIN_RENEPAY_SRC:.c=.o) diff --git a/plugins/renepay/utils.c b/plugins/renepay/utils.c new file mode 100644 index 000000000000..9049abfdcd2b --- /dev/null +++ b/plugins/renepay/utils.c @@ -0,0 +1,101 @@ +#include "config.h" +#include +#include + +struct rpcbatch { + size_t num_remaining; + struct command *cmd; + struct command_result *(*finalcb)(struct command *, void *); + void *arg; +}; + +struct rpcbatch_aux { + struct rpcbatch *batch; + void *arg; + struct command_result *(*cb)(struct command *cmd, const char *, + const char *, const jsmntok_t *, void *); + struct command_result *(*errcb)(struct command *cmd, const char *, + const char *, const jsmntok_t *, + void *); +}; + +struct rpcbatch * +rpcbatch_new_(struct command *cmd, + struct command_result *(*finalcb)(struct command *, void *), + void *arg) +{ + struct rpcbatch *batch = tal(cmd, struct rpcbatch); + batch->num_remaining = 0; + batch->cmd = cmd; + batch->finalcb = finalcb; + batch->arg = arg; + return batch; +} + +static struct command_result *batch_one_complete(struct rpcbatch *batch) +{ + assert(batch->num_remaining); + if (--batch->num_remaining != 0) + return command_still_pending(batch->cmd); + struct command *cmd = batch->cmd; + void *arg = batch->arg; + struct command_result *(*finalcb)(struct command *, void *) = + batch->finalcb; + tal_free(batch); + return finalcb(cmd, arg); +} + +static struct command_result * +batch_one_success(struct command *cmd, const char *method, const char *buf, + const jsmntok_t *result, struct rpcbatch_aux *aux) +{ + /* Little hack to get the value of "complete" from libplugin. */ + struct command_result *complete = command_param_failed(); + /* If this frees stuff (e.g. fails), just return */ + if (aux->cb && aux->cb(cmd, method, buf, result, aux->arg) == complete) + return complete; + struct rpcbatch *batch = aux->batch; + tal_free(aux); + return batch_one_complete(batch); +} + +static struct command_result * +batch_one_failed(struct command *cmd, const char *method, const char *buf, + const jsmntok_t *result, struct rpcbatch_aux *aux) +{ + /* Little hack to get the value of "complete" from libplugin. */ + struct command_result *complete = command_param_failed(); + /* If this frees stuff (e.g. fails), just return */ + if (aux->errcb && + aux->errcb(cmd, method, buf, result, aux->arg) == complete) + return complete; + struct rpcbatch *batch = aux->batch; + tal_free(aux); + return batch_one_complete(batch); +} + +struct out_req *add_to_rpcbatch_( + struct rpcbatch *batch, const char *cmdname, + struct command_result *(*cb)(struct command *, const char *, const char *, + const jsmntok_t *, void *arg), + struct command_result *(*errcb)(struct command *, const char *, + const char *, const jsmntok_t *, void *arg), + void *arg) +{ + batch->num_remaining++; + struct rpcbatch_aux *aux = tal(batch, struct rpcbatch_aux); + aux->arg = arg; + aux->batch = batch; + aux->cb = cb; + aux->errcb = errcb; + return jsonrpc_request_start(batch->cmd, cmdname, batch_one_success, + batch_one_failed, aux); +} + +/* Runs finalcb immediately if batch is empty. */ +struct command_result *rpcbatch_done(struct rpcbatch *batch) +{ + /* Same path as completion */ + batch->num_remaining++; + return batch_one_complete(batch); +} diff --git a/plugins/renepay/utils.h b/plugins/renepay/utils.h new file mode 100644 index 000000000000..94a851ae46b5 --- /dev/null +++ b/plugins/renepay/utils.h @@ -0,0 +1,57 @@ +#ifndef LIGHTNING_PLUGINS_RENEPAY_UTILS_H +#define LIGHTNING_PLUGINS_RENEPAY_UTILS_H + +#include "config.h" + +struct rpcbatch; + +struct rpcbatch * +rpcbatch_new_(struct command *cmd, + struct command_result *(*finalcb)(struct command *, void *), + void *arg); + +/* Returns a new rpcbatch object. This is meant to process multiple RPC calls + * and execute a callback function after all of them have returned. + * + * @cmd: command involved in all RPC requests + * @finalcb: after all RPCs have returned this function is called + * @arg: argument passed to finalcb + * */ +#define rpcbatch_new(cmd, finalcb, arg) \ + rpcbatch_new_((cmd), \ + typesafe_cb_preargs(struct command_result *, void *, \ + (finalcb), (arg), \ + struct command *command), \ + (arg)) + +struct out_req *add_to_rpcbatch_( + struct rpcbatch *batch, const char *cmdname, + struct command_result *(*cb)(struct command *, const char *, const char *, + const jsmntok_t *, void *arg), + struct command_result *(*errcb)(struct command *, const char *, + const char *, const jsmntok_t *, void *arg), + void *arg); + +/* Append a new RPC request to this batch. + * + * @batch: RPC request batch + * @cmdname: RPC name + * @cb: callback function on success + * @errcb: callback function on failure + * @arg: callback functions argument + * */ +#define add_to_rpcbatch(batch, cmdname, cb, errcb, arg) \ + add_to_rpcbatch_( \ + (batch), (cmdname), \ + typesafe_cb_preargs(struct command_result *, void *, (cb), (arg), \ + struct command *command, const char *method, \ + const char *buf, const jsmntok_t *result), \ + typesafe_cb_preargs(struct command_result *, void *, (errcb), \ + (arg), struct command *command, \ + const char *method, const char *buf, \ + const jsmntok_t *result), \ + (arg)) + +struct command_result *rpcbatch_done(struct rpcbatch *batch); + +#endif /* LIGHTNING_PLUGINS_RENEPAY_UTILS_H */ From 2507a50379390b51e281eff8bc3a8b07e37cb919 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Fri, 21 Feb 2025 12:09:31 +0100 Subject: [PATCH 11/22] renepay: use plugin_get_data API Use plugin_get_data API and make less use of the access to the global plugin state when possible. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/Makefile | 4 +- plugins/renepay/mods.c | 77 ++++++++++--------- plugins/renepay/payment.c | 11 +-- plugins/renepay/payment.h | 6 +- plugins/renepay/{main.c => renepay.c} | 71 +++++++++--------- plugins/renepay/{payplugin.h => renepay.h} | 11 +-- plugins/renepay/routefail.c | 15 ++-- plugins/renepay/routefail.h | 5 +- plugins/renepay/routetracker.c | 86 ++++++++++++---------- plugins/renepay/routetracker.h | 3 +- plugins/renepay/sendpay.c | 6 +- plugins/renepay/utils.c | 5 ++ plugins/renepay/utils.h | 2 + 13 files changed, 164 insertions(+), 138 deletions(-) rename plugins/renepay/{main.c => renepay.c} (89%) rename plugins/renepay/{payplugin.h => renepay.h} (92%) diff --git a/plugins/renepay/Makefile b/plugins/renepay/Makefile index 9e539dd41ee9..dc736b046951 100644 --- a/plugins/renepay/Makefile +++ b/plugins/renepay/Makefile @@ -1,5 +1,5 @@ PLUGIN_RENEPAY_SRC := \ - plugins/renepay/main.c \ + plugins/renepay/renepay.c \ plugins/renepay/payment.c \ plugins/renepay/route.c \ plugins/renepay/routetracker.c \ @@ -11,7 +11,7 @@ PLUGIN_RENEPAY_SRC := \ plugins/renepay/json.c PLUGIN_RENEPAY_HDRS := \ - plugins/renepay/payplugin.h \ + plugins/renepay/renepay.h \ plugins/renepay/payment.h \ plugins/renepay/payment_info.h \ plugins/renepay/renepayconfig.h \ diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 1fa6895b9ada..af99e4ddfff9 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -8,10 +8,11 @@ #include #include #include -#include +#include #include #include #include +#include #include #include @@ -32,7 +33,7 @@ struct command_result *payment_continue(struct payment *payment) void *op = payment_virtual_program[payment->exec_state++]; if (op == OP_NULL) { - plugin_err(pay_plugin->plugin, + plugin_err(payment->plugin, "payment_continue reached the end of the virtual " "machine execution."); } else if (op == OP_CALL) { @@ -41,11 +42,11 @@ struct command_result *payment_continue(struct payment *payment) payment_virtual_program[payment->exec_state++]; if (mod == NULL) - plugin_err(pay_plugin->plugin, + plugin_err(payment->plugin, "payment_continue expected payment_modifier " "but NULL found"); - plugin_log(pay_plugin->plugin, LOG_DBG, "Calling modifier %s", + plugin_log(payment->plugin, LOG_DBG, "Calling modifier %s", mod->name); return mod->step_cb(payment); } else if (op == OP_IF) { @@ -54,11 +55,11 @@ struct command_result *payment_continue(struct payment *payment) payment_virtual_program[payment->exec_state++]; if (cond == NULL) - plugin_err(pay_plugin->plugin, + plugin_err(payment->plugin, "payment_continue expected pointer to " "condition but NULL found"); - plugin_log(pay_plugin->plugin, LOG_DBG, + plugin_log(payment->plugin, LOG_DBG, "Calling payment condition %s", cond->name); const u64 position_iftrue = @@ -69,7 +70,7 @@ struct command_result *payment_continue(struct payment *payment) return payment_continue(payment); } - plugin_err(pay_plugin->plugin, "payment_continue op code not defined"); + plugin_err(payment->plugin, "payment_continue op code not defined"); return NULL; } @@ -121,7 +122,7 @@ struct success_data { }; /* Extracts success data from listsendpays. */ -static bool success_data_from_listsendpays(const char *buf, +static bool success_data_from_listsendpays(struct command *cmd, const char *buf, const jsmntok_t *arr, struct success_data *success) { @@ -144,13 +145,13 @@ static bool success_data_from_listsendpays(const char *buf, const jsmntok_t *status_tok = json_get_member(buf, t, "status"); if (!status_tok) plugin_err( - pay_plugin->plugin, + cmd->plugin, "%s (line %d) missing status token from json.", __func__, __LINE__); const char *status = json_strdup(tmpctx, buf, status_tok); if (!status) plugin_err( - pay_plugin->plugin, + cmd->plugin, "%s (line %d) failed to allocate status string.", __func__, __LINE__); @@ -173,7 +174,7 @@ static bool success_data_from_listsendpays(const char *buf, JSON_SCAN(json_to_preimage, &success->preimage)); if (err) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s (line %d) json_scan of " "listsendpay returns the " "following error: %s", @@ -185,7 +186,7 @@ static bool success_data_from_listsendpays(const char *buf, this_msat) || !amount_msat_add(&success->sent_msat, success->sent_msat, this_sent)) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s (line %d) amount_msat overflow.", __func__, __LINE__); @@ -211,7 +212,7 @@ static struct command_result *previoussuccess_done(struct command *cmd, } struct success_data success; - if (!success_data_from_listsendpays(buf, arr, &success)) { + if (!success_data_from_listsendpays(cmd, buf, arr, &success)) { /* There are no success sendpays. */ return payment_continue(payment); } @@ -270,9 +271,10 @@ REGISTER_PAYMENT_MODIFIER(initial_sanity_checks, initial_sanity_checks_cb); static struct command_result *refreshgossmap_cb(struct payment *payment) { - assert(pay_plugin->gossmap); // gossmap must be already initialized assert(payment); - gossmap_refresh(pay_plugin->gossmap); + struct renepay *renepay = get_renepay(payment->plugin); + assert(renepay->gossmap); // gossmap must be already initialized + gossmap_refresh(renepay->gossmap); return payment_continue(payment); } @@ -454,7 +456,7 @@ static struct command_result *getroutes_done(struct command *cmd, assert(routetracker); if (tal_count(routetracker->computed_routes) > 0) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s: no previously computed routes expected.", __func__); @@ -476,7 +478,7 @@ static struct command_result *getroutes_done(struct command *cmd, bool success = json_to_myroute(buf, r, route); if (!success) { plugin_err( - pay_plugin->plugin, + cmd->plugin, "%s: failed to parse route from getroutes, %.*s", __func__, json_tok_full_len(r), json_tok_full(buf, r)); @@ -511,19 +513,20 @@ static struct command_result *getroutes_fail(struct command *cmd, static struct command_result *getroutes_cb(struct payment *payment) { + struct renepay *renepay = get_renepay(payment->plugin); assert(payment->status == PAYMENT_PENDING); struct amount_msat feebudget, fees_spent, remaining; /* Total feebudget */ if (!amount_msat_sub(&feebudget, payment->payment_info.maxspend, payment->payment_info.amount)) - plugin_err(pay_plugin->plugin, "%s: fee budget is negative?", + plugin_err(payment->plugin, "%s: fee budget is negative?", __func__); /* Fees spent so far */ if (!amount_msat_sub(&fees_spent, payment->total_sent, payment->total_delivering)) - plugin_err(pay_plugin->plugin, + plugin_err(payment->plugin, "%s: total_delivering is greater than total_sent?", __func__); @@ -535,7 +538,7 @@ static struct command_result *getroutes_cb(struct payment *payment) if (!amount_msat_sub(&remaining, payment->payment_info.amount, payment->total_delivering) || amount_msat_is_zero(remaining)) { - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, + plugin_log(payment->plugin, LOG_UNUSUAL, "%s: Payment is pending with full amount already " "committed. We skip the computation of new routes.", __func__); @@ -566,7 +569,7 @@ static struct command_result *getroutes_cb(struct payment *payment) // starts // -> command_layer should auto clean - json_add_node_id(req->js, "source", &pay_plugin->my_id); + json_add_node_id(req->js, "source", &renepay->my_id); json_add_node_id(req->js, "destination", payment->routing_destination); json_add_amount_msat(req->js, "amount_msat", remaining); json_add_amount_msat(req->js, "maxfee_msat", feebudget); @@ -599,7 +602,7 @@ static struct command_result *send_routes_cb(struct payment *payment) assert(routetracker); if (!routetracker->computed_routes || tal_count(routetracker->computed_routes) == 0) { - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, + plugin_log(payment->plugin, LOG_UNUSUAL, "%s: there are no routes to send, skipping.", __func__); return payment_continue(payment); @@ -682,7 +685,7 @@ static struct command_result *collect_results_cb(struct payment *payment) if (!amount_msat_greater_eq(payment->total_delivering, payment->payment_info.amount)) { plugin_log( - pay_plugin->plugin, LOG_UNUSUAL, + payment->plugin, LOG_UNUSUAL, "%s: received a success sendpay for this " "payment but the total delivering amount %s " "is less than the payment amount %s.", @@ -796,7 +799,7 @@ static struct command_result *pendingsendpays_done(struct command *cmd, } struct success_data success; - if (success_data_from_listsendpays(buf, arr, &success)) { + if (success_data_from_listsendpays(cmd, buf, arr, &success)) { /* Have success data, hence the payment is complete, we stop. */ payment->payment_info.start_time.ts.tv_sec = success.created_at; payment->payment_info.start_time.ts.tv_nsec = 0; @@ -827,7 +830,7 @@ static struct command_result *pendingsendpays_done(struct command *cmd, JSON_SCAN(json_to_u64, &groupid)); if (err) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s json_scan of listsendpay returns the " "following error: %s", __func__, err); @@ -864,7 +867,7 @@ static struct command_result *pendingsendpays_done(struct command *cmd, JSON_SCAN(json_to_msat, &this_sent)); if (err) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s json_scan of listsendpay returns the " "following error: %s", __func__, err); @@ -887,7 +890,7 @@ static struct command_result *pendingsendpays_done(struct command *cmd, this_msat) || !amount_msat_add(&pending_sent, pending_sent, this_sent)) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s (line %d) amount_msat overflow.", __func__, __LINE__); } @@ -911,7 +914,7 @@ static struct command_result *pendingsendpays_done(struct command *cmd, payment->total_sent = pending_sent; payment->total_delivering = pending_msat; - plugin_log(pay_plugin->plugin, LOG_DBG, + plugin_log(cmd->plugin, LOG_DBG, "There are pending sendpays to this invoice. " "groupid = %" PRIu64 " " "delivering = %s, " @@ -964,9 +967,10 @@ static struct command_result *age_done(struct command *cmd, static struct command_result *knowledgerelax_cb(struct payment *payment) { + struct renepay *renepay = get_renepay(payment->plugin); const u64 now_sec = time_now().ts.tv_sec; - // const u64 time_delta = now_sec - pay_plugin->last_time; - pay_plugin->last_time = now_sec; + // const u64 time_delta = now_sec - renepay->last_time; + renepay->last_time = now_sec; /* FIXME: implement a Markovian state relaxation, the time delta is all * we need to provide. */ struct command *cmd = payment_command(payment); @@ -1090,7 +1094,8 @@ static struct command_result *channelfilter_done(struct command *cmd, static struct command_result *channelfilter_cb(struct payment *payment) { assert(payment); - assert(pay_plugin->gossmap); + struct renepay *renepay = get_renepay(payment->plugin); + assert(renepay->gossmap); const double HTLC_MAX_FRACTION = 0.01; // 1% const u64 HTLC_MAX_STOP_MSAT = 1000000000; // 1M sats u64 disabled_count = 0; @@ -1107,18 +1112,18 @@ static struct command_result *channelfilter_cb(struct payment *payment) struct out_req *req; for (const struct gossmap_node *node = - gossmap_first_node(pay_plugin->gossmap); - node; node = gossmap_next_node(pay_plugin->gossmap, node)) { + gossmap_first_node(renepay->gossmap); + node; node = gossmap_next_node(renepay->gossmap, node)) { for (size_t i = 0; i < node->num_chans; i++) { int dir; const struct gossmap_chan *chan = gossmap_nth_chan( - pay_plugin->gossmap, node, i, &dir); + renepay->gossmap, node, i, &dir); const u64 htlc_max = fp16_to_u64(chan->half[dir].htlc_max); if (htlc_max < htlc_max_threshold) { struct short_channel_id_dir scidd = { .scid = gossmap_chan_scid( - pay_plugin->gossmap, chan), + renepay->gossmap, chan), .dir = dir}; req = add_to_batch(cmd, batch, "askrene-update-channel"); @@ -1134,7 +1139,7 @@ static struct command_result *channelfilter_cb(struct payment *payment) } // FIXME: prune the network over other parameters, eg. capacity, // fees, ... - plugin_log(pay_plugin->plugin, LOG_DBG, + plugin_log(payment->plugin, LOG_DBG, "channelfilter: disabling %" PRIu64 " channels.", disabled_count); return batch_done(cmd, batch); diff --git a/plugins/renepay/payment.c b/plugins/renepay/payment.c index a072f68efb39..5ac7805a1c20 100644 --- a/plugins/renepay/payment.c +++ b/plugins/renepay/payment.c @@ -7,17 +7,18 @@ #include #include #include -#include +#include #include static struct command_result *payment_finish(struct payment *p); struct payment *payment_new(const tal_t *ctx, const struct sha256 *payment_hash, - const char *invstr TAKES) + const char *invstr TAKES, + struct plugin *plugin) { struct payment *p = tal(ctx, struct payment); memset(p, 0, sizeof(struct payment)); - + p->plugin = plugin; struct payment_info *pinfo = &p->payment_info; assert(payment_hash); @@ -157,7 +158,7 @@ struct amount_msat payment_fees(const struct payment *p) if (!amount_msat_sub(&fees, sent, delivered)) plugin_err( - pay_plugin->plugin, + p->plugin, "Strange, sent amount (%s) is less than delivered (%s), " "aborting.", fmt_amount_msat(tmpctx, sent), @@ -259,7 +260,7 @@ void payment_note(struct payment *p, enum log_level lvl, const char *fmt, ...) tal_arr_expand(&p->paynotes, str); /* Log at debug, unless it's weird... */ - plugin_log(pay_plugin->plugin, lvl < LOG_UNUSUAL ? LOG_DBG : lvl, "%s", + plugin_log(p->plugin, lvl < LOG_UNUSUAL ? LOG_DBG : lvl, "%s", str); for (size_t i = 0; i < tal_count(p->cmd_array); i++) { diff --git a/plugins/renepay/payment.h b/plugins/renepay/payment.h index 8a6a6a5ef097..611b731e08ea 100644 --- a/plugins/renepay/payment.h +++ b/plugins/renepay/payment.h @@ -72,6 +72,9 @@ struct payment { /* Knowledge layer concerning this payment. */ const char *payment_layer; + + /* For logs and access to global data. */ + struct plugin *plugin; }; static inline const struct sha256 payment_hash(const struct payment *p) @@ -104,7 +107,8 @@ HTABLE_DEFINE_NODUPS_TYPE(struct payment, payment_hash, payment_hash64, struct payment *payment_new( const tal_t *ctx, const struct sha256 *payment_hash, - const char *invstr TAKES); + const char *invstr TAKES, + struct plugin *plugin); bool payment_set_constraints( struct payment *p, diff --git a/plugins/renepay/main.c b/plugins/renepay/renepay.c similarity index 89% rename from plugins/renepay/main.c rename to plugins/renepay/renepay.c index e2db829d8b3a..6c3e4c5cedb9 100644 --- a/plugins/renepay/main.c +++ b/plugins/renepay/renepay.c @@ -15,9 +15,10 @@ #include #include #include -#include +#include #include #include +#include #include // TODO(eduardo): notice that pending attempts performed with another @@ -25,13 +26,12 @@ // it would be nice if listsendpay would give us the route of pending // sendpays. -struct pay_plugin *pay_plugin; - static void memleak_mark(struct plugin *p, struct htable *memtable) { - memleak_scan_obj(memtable, pay_plugin); - memleak_scan_htable(memtable, &pay_plugin->payment_map->raw); - memleak_scan_htable(memtable, &pay_plugin->pending_routes->raw); + struct renepay *renepay = get_renepay(p); + memleak_scan_obj(memtable, renepay); + memleak_scan_htable(memtable, &renepay->payment_map->raw); + memleak_scan_htable(memtable, &renepay->pending_routes->raw); } static struct command_result *createlayer_done(struct command *aux_cmd, @@ -47,14 +47,14 @@ static const char *init(struct command *init_cmd, const char *buf UNUSED, const jsmntok_t *config UNUSED) { struct plugin *p = init_cmd->plugin; + struct renepay *renepay = get_renepay(p); size_t num_channel_updates_rejected = 0; - tal_steal(p, pay_plugin); - pay_plugin->plugin = p; - pay_plugin->last_time = 0; + renepay->plugin = p; + renepay->last_time = 0; rpc_scan(init_cmd, "getinfo", take(json_out_obj(NULL, NULL, NULL)), - "{id:%}", JSON_SCAN(json_to_node_id, &pay_plugin->my_id)); + "{id:%}", JSON_SCAN(json_to_node_id, &renepay->my_id)); /* BOLT #4: * ## `max_htlc_cltv` Selection @@ -63,27 +63,25 @@ static const char *init(struct command *init_cmd, * deployed by Lightning implementations. */ /* FIXME: Typo in spec for CLTV in descripton! But it breaks our spelling check, so we omit it above */ - pay_plugin->maxdelay_default = 2016; + renepay->maxdelay_default = 2016; /* max-locktime-blocks deprecated in v24.05, but still grab it! */ rpc_scan(init_cmd, "listconfigs", take(json_out_obj(NULL, NULL, NULL)), "{configs:" "{max-locktime-blocks?:{value_int:%}}}", - JSON_SCAN(json_to_number, &pay_plugin->maxdelay_default) + JSON_SCAN(json_to_number, &renepay->maxdelay_default) ); - pay_plugin->payment_map = tal(pay_plugin, struct payment_map); - payment_map_init(pay_plugin->payment_map); + renepay->payment_map = tal(renepay, struct payment_map); + payment_map_init(renepay->payment_map); - pay_plugin->pending_routes = tal(pay_plugin, struct route_map); - route_map_init(pay_plugin->pending_routes); + renepay->pending_routes = tal(renepay, struct route_map); + route_map_init(renepay->pending_routes); - pay_plugin->gossmap = gossmap_load(pay_plugin, - GOSSIP_STORE_FILENAME, - plugin_gossmap_logcb, - p); + renepay->gossmap = gossmap_load(renepay, GOSSIP_STORE_FILENAME, + plugin_gossmap_logcb, p); - if (!pay_plugin->gossmap) + if (!renepay->gossmap) plugin_err(p, "Could not load gossmap %s: %s", GOSSIP_STORE_FILENAME, strerror(errno)); if (num_channel_updates_rejected) @@ -105,6 +103,7 @@ static struct command_result *json_renepaystatus(struct command *cmd, const char *buf, const jsmntok_t *params) { + struct renepay *renepay = get_renepay(cmd->plugin); const char *invstring; struct json_stream *ret; @@ -132,7 +131,7 @@ static struct command_result *json_renepaystatus(struct command *cmd, "Invalid bolt11: %s", fail); struct payment *payment = - payment_map_get(pay_plugin->payment_map, b11->payment_hash); + payment_map_get(renepay->payment_map, b11->payment_hash); if(payment) { @@ -145,8 +144,8 @@ static struct command_result *json_renepaystatus(struct command *cmd, /* show all payments */ struct payment_map_iter it; for (struct payment *p = - payment_map_first(pay_plugin->payment_map, &it); - p; p = payment_map_next(pay_plugin->payment_map, &it)) { + payment_map_first(renepay->payment_map, &it); + p; p = payment_map_next(renepay->payment_map, &it)) { json_object_start(ret, NULL); json_add_payment(ret, p); json_object_end(ret); @@ -161,7 +160,7 @@ static struct command_result * payment_start(struct payment *p) { assert(p); p->status = PAYMENT_PENDING; - plugin_log(pay_plugin->plugin, LOG_DBG, "Starting renepay"); + plugin_log(p->plugin, LOG_DBG, "Starting renepay"); p->exec_state = 0; return payment_continue(p); } @@ -169,6 +168,7 @@ static struct command_result * payment_start(struct payment *p) static struct command_result *json_renepay(struct command *cmd, const char *buf, const jsmntok_t *params) { + struct renepay *renepay = get_renepay(cmd->plugin); /* === Parse command line arguments === */ // TODO check if we leak some of these temporary variables @@ -208,7 +208,7 @@ static struct command_result *json_renepay(struct command *cmd, const char *buf, /* maxdelay has a configuration default value named * "max-locktime-blocks", this is retrieved at * init. */ - pay_plugin->maxdelay_default), + renepay->maxdelay_default), p_opt_def("retry_for", param_number, &retryfor, 60), // 60 seconds @@ -326,11 +326,12 @@ static struct command_result *json_renepay(struct command *cmd, const char *buf, // one payment_hash one payment is not assumed, it is enforced assert(payment_hash); struct payment *payment = - payment_map_get(pay_plugin->payment_map, *payment_hash); + payment_map_get(renepay->payment_map, *payment_hash); if(!payment) { - payment = payment_new(tmpctx, payment_hash, invstr); + payment = + payment_new(tmpctx, payment_hash, invstr, cmd->plugin); if (!payment) return command_fail(cmd, PLUGIN_ERROR, "failed to create a new payment"); @@ -406,8 +407,8 @@ static struct command_result *json_renepay(struct command *cmd, const char *buf, "failed to register command"); // good to go - payment = tal_steal(pay_plugin, payment); - payment_map_add(pay_plugin->payment_map, payment); + payment = tal_steal(renepay, payment); + payment_map_add(renepay->payment_map, payment); return payment_start(payment); } @@ -485,12 +486,12 @@ int main(int argc, char *argv[]) setup_locale(); /* Most gets initialized in init(), but set debug options here. */ - pay_plugin = tal(NULL, struct pay_plugin); - pay_plugin->debug_mcf = pay_plugin->debug_payflow = false; + struct renepay *renepay = tal(NULL, struct renepay); + renepay->debug_mcf = renepay->debug_payflow = false; plugin_main( argv, - init, NULL, + init, take(renepay), PLUGIN_RESTARTABLE, /* init_rpc */ true, /* features */ NULL, @@ -500,10 +501,10 @@ int main(int argc, char *argv[]) /* notification topics */ NULL, 0, plugin_option("renepay-debug-mcf", "flag", "Enable renepay MCF debug info.", - flag_option, NULL, &pay_plugin->debug_mcf), + flag_option, NULL, &renepay->debug_mcf), plugin_option("renepay-debug-payflow", "flag", "Enable renepay payment flows debug info.", - flag_option, NULL, &pay_plugin->debug_payflow), + flag_option, NULL, &renepay->debug_payflow), NULL); return 0; diff --git a/plugins/renepay/payplugin.h b/plugins/renepay/renepay.h similarity index 92% rename from plugins/renepay/payplugin.h rename to plugins/renepay/renepay.h index d2c43b0e1473..5f1682a015fe 100644 --- a/plugins/renepay/payplugin.h +++ b/plugins/renepay/renepay.h @@ -1,5 +1,5 @@ -#ifndef LIGHTNING_PLUGINS_RENEPAY_PAYPLUGIN_H -#define LIGHTNING_PLUGINS_RENEPAY_PAYPLUGIN_H +#ifndef LIGHTNING_PLUGINS_RENEPAY_RENEPAY_H +#define LIGHTNING_PLUGINS_RENEPAY_RENEPAY_H #include "config.h" #include #include @@ -38,7 +38,7 @@ // - with current knowledge there is no flow solution to destination /* Our convenient global data, here in one place. */ -struct pay_plugin { +struct renepay { /* From libplugin */ struct plugin *plugin; @@ -82,7 +82,4 @@ struct pay_plugin { u64 last_time; }; -/* Set in init */ -extern struct pay_plugin *pay_plugin; - -#endif /* LIGHTNING_PLUGINS_RENEPAY_PAYPLUGIN_H */ +#endif /* LIGHTNING_PLUGINS_RENEPAY_RENEPAY_H */ diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 77f8a1efe794..3ba647e23429 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -1,9 +1,10 @@ #include "config.h" #include #include -#include +#include #include #include +#include #include enum node_type { @@ -31,7 +32,8 @@ static struct command_result *routefail_end(struct command *cmd, { /* Notify the tracker that route has failed and routefail have completed * handling all possible errors cases. */ - routetracker_add_to_final(r->payment->routetracker, r->route); + routetracker_add_to_final(r->payment, r->payment->routetracker, + r->route); r = tal_free(r); return notification_handled(cmd); } @@ -48,16 +50,15 @@ static struct command_result *log_routefail_err(struct command *cmd, return command_still_pending(cmd); } -struct command_result *routefail_start(const tal_t *ctx, struct route *route, - struct command *cmd) +struct command_result *routefail_start(const tal_t *ctx, + struct payment *payment, + struct route *route, struct command *cmd) { assert(route); struct routefail *r = tal(ctx, struct routefail); - struct payment *payment = - payment_map_get(pay_plugin->payment_map, route->key.payment_hash); if (payment == NULL) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s: payment with hash %s not found.", __func__, fmt_sha256(tmpctx, &route->key.payment_hash)); diff --git a/plugins/renepay/routefail.h b/plugins/renepay/routefail.h index bad3aabef283..509945b7af9f 100644 --- a/plugins/renepay/routefail.h +++ b/plugins/renepay/routefail.h @@ -6,7 +6,8 @@ #include "config.h" #include -struct command_result *routefail_start(const tal_t *ctx, struct route *route, - struct command *cmd); +struct command_result *routefail_start(const tal_t *ctx, + struct payment *payment, + struct route *route, struct command *cmd); #endif /* LIGHTNING_PLUGINS_RENEPAY_ROUTEFAIL_H */ diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index 9b68f48958c5..065d599b4f3a 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -2,16 +2,18 @@ #include #include #include -#include +#include #include #include +#include -static struct payment *route_get_payment_verify(struct route *route) +static struct payment *route_get_payment_verify(struct renepay *renepay, + struct route *route) { struct payment *payment = - payment_map_get(pay_plugin->payment_map, route->key.payment_hash); + payment_map_get(renepay->payment_map, route->key.payment_hash); if (!payment) - plugin_err(pay_plugin->plugin, + plugin_err(renepay->plugin, "%s: no payment associated with routekey %s", __func__, fmt_routekey(tmpctx, &route->key)); @@ -45,14 +47,13 @@ void routetracker_cleanup(struct routetracker *routetracker) // TODO } -void routetracker_add_to_final(struct routetracker *routetracker, +void routetracker_add_to_final(struct payment *payment, + struct routetracker *routetracker, struct route *route) { tal_arr_expand(&routetracker->finalized_routes, route); tal_steal(routetracker->finalized_routes, route); - struct payment *payment = - payment_map_get(pay_plugin->payment_map, route->key.payment_hash); assert(payment); if (payment->exec_state == INVALID_STATE) { /* payment is offline, collect results now and set the payment @@ -97,34 +98,35 @@ static void remove_route(struct route *route, struct route_map *map) * - after a sendpay is accepted, * - or after listsendpays reveals some pending route that we didn't * previously know about. */ -static void route_pending_register(struct routetracker *routetracker, +static void route_pending_register(struct payment *payment, + struct routetracker *routetracker, struct route *route) { assert(route); assert(routetracker); - struct payment *payment = route_get_payment_verify(route); assert(payment); assert(payment->groupid == route->key.groupid); + struct renepay *renepay = get_renepay(payment->plugin); /* we already keep track of this route */ - if (route_map_get(pay_plugin->pending_routes, &route->key)) - plugin_err(pay_plugin->plugin, + if (route_map_get(renepay->pending_routes, &route->key)) + plugin_err(renepay->plugin, "%s: tracking a route (%s) duplicate?", __func__, fmt_routekey(tmpctx, &route->key)); if (!route_map_del(routetracker->sent_routes, route)) - plugin_err(pay_plugin->plugin, + plugin_err(renepay->plugin, "%s: tracking a route (%s) not computed by this " "payment call", __func__, fmt_routekey(tmpctx, &route->key)); - if (!tal_steal(pay_plugin->pending_routes, route) || - !route_map_add(pay_plugin->pending_routes, route) || + if (!tal_steal(renepay->pending_routes, route) || + !route_map_add(renepay->pending_routes, route) || !tal_add_destructor2(route, remove_route, - pay_plugin->pending_routes)) - plugin_err(pay_plugin->plugin, "%s: failed to register route.", + renepay->pending_routes)) + plugin_err(renepay->plugin, "%s: failed to register route.", __func__); if (!amount_msat_add(&payment->total_sent, payment->total_sent, @@ -132,7 +134,7 @@ static void route_pending_register(struct routetracker *routetracker, !amount_msat_add(&payment->total_delivering, payment->total_delivering, route_delivers(route))) { - plugin_err(pay_plugin->plugin, + plugin_err(renepay->plugin, "%s: amount_msat arithmetic overflow.", __func__); } @@ -146,8 +148,9 @@ static struct command_result *sendpay_done(struct command *cmd, struct route *route) { assert(route); - struct payment *payment = route_get_payment_verify(route); - route_pending_register(payment->routetracker, route); + struct renepay *renepay = get_renepay(cmd->plugin); + struct payment *payment = route_get_payment_verify(renepay, route); + route_pending_register(payment, payment->routetracker, route); const jsmntok_t *t; size_t i; @@ -182,7 +185,8 @@ static struct command_result *sendpay_failed(struct command *cmd, struct route *route) { assert(route); - struct payment *payment = route_get_payment_verify(route); + struct renepay *renepay = get_renepay(cmd->plugin); + struct payment *payment = route_get_payment_verify(renepay, route); struct routetracker *routetracker = payment->routetracker; assert(routetracker); @@ -194,7 +198,7 @@ static struct command_result *sendpay_failed(struct command *cmd, JSON_SCAN(json_to_jsonrpc_errcode, &errcode), JSON_SCAN_TAL(tmpctx, json_strdup, &msg)); if (err) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Unable to parse sendpay error: %s, json: %.*s", err, json_tok_full_len(tok), json_tok_full(buf, tok)); @@ -204,7 +208,7 @@ static struct command_result *sendpay_failed(struct command *cmd, route->key.partid, errcode, msg); if (errcode != PAY_TRY_OTHER_ROUTE) { - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, + plugin_log(cmd->plugin, LOG_UNUSUAL, "Strange error from sendpay: %.*s", json_tok_full_len(tok), json_tok_full(buf, tok)); } @@ -217,7 +221,7 @@ static struct command_result *sendpay_failed(struct command *cmd, "sendpay didn't like first hop: %s", msg); if (!route_map_del(routetracker->sent_routes, route)) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "%s: route (%s) is not marked as sent", __func__, fmt_routekey(tmpctx, &route->key)); @@ -256,7 +260,7 @@ void payment_collect_results(struct payment *payment, * does not have the same groupid as the one we used for our * routes. */ if (payment->groupid != r->key.groupid) { - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, + plugin_log(payment->plugin, LOG_UNUSUAL, "%s: current groupid=%" PRIu64 ", but recieved a sendpay result with " "groupid=%" PRIu64, @@ -281,7 +285,7 @@ void payment_collect_results(struct payment *payment, route_delivers(r)) || !amount_msat_sub(&payment->total_sent, payment->total_sent, route_sends(r))) { - plugin_err(pay_plugin->plugin, + plugin_err(payment->plugin, "%s: routes do not add up to " "payment total amount.", __func__); @@ -352,7 +356,8 @@ struct command_result *notification_sendpay_failure(struct command *cmd, const char *buf, const jsmntok_t *params) { - plugin_log(pay_plugin->plugin, LOG_DBG, + struct renepay *renepay = get_renepay(cmd->plugin); + plugin_log(cmd->plugin, LOG_DBG, "sendpay_failure notification: %.*s", json_tok_full_len(params), json_tok_full(buf, params)); @@ -362,12 +367,12 @@ struct command_result *notification_sendpay_failure(struct command *cmd, struct routekey *key = tal_routekey_from_json( tmpctx, buf, json_get_member(buf, sub, "data")); if (!key) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Unable to get routekey from sendpay_failure: %.*s", json_tok_full_len(sub), json_tok_full(buf, sub)); struct payment *payment = - payment_map_get(pay_plugin->payment_map, key->payment_hash); + payment_map_get(renepay->payment_map, key->payment_hash); if (!payment) { /* This sendpay is not linked to any route in our database, we @@ -378,12 +383,12 @@ struct command_result *notification_sendpay_failure(struct command *cmd, struct routetracker *routetracker = payment->routetracker; assert(routetracker); struct route *route = - route_map_get(pay_plugin->pending_routes, key); + route_map_get(renepay->pending_routes, key); if (!route) { route = tal_route_from_json(tmpctx, buf, json_get_member(buf, sub, "data")); if (!route) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Failed to get route information from " "sendpay_failure: %.*s", json_tok_full_len(sub), @@ -394,7 +399,7 @@ struct command_result *notification_sendpay_failure(struct command *cmd, route->result = tal_sendpay_result_from_json(route, buf, sub, route->shared_secrets); if (route->result == NULL) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Unable to parse sendpay_failure: %.*s", json_tok_full_len(sub), json_tok_full(buf, sub)); @@ -405,7 +410,7 @@ struct command_result *notification_sendpay_failure(struct command *cmd, json_get_member(buf, datatok, "status"); const char *status_str = json_strdup(tmpctx, buf, statustok); - plugin_log(pay_plugin->plugin, LOG_UNUSUAL, + plugin_log(cmd->plugin, LOG_UNUSUAL, "sendpay_failure notification returned status=%s", status_str); route->result->status = SENDPAY_FAILED; @@ -413,14 +418,15 @@ struct command_result *notification_sendpay_failure(struct command *cmd, /* we do some error processing steps before calling * route_failure_register. */ - return routefail_start(payment, route, cmd); + return routefail_start(payment, payment, route, cmd); } struct command_result *notification_sendpay_success(struct command *cmd, const char *buf, const jsmntok_t *params) { - plugin_log(pay_plugin->plugin, LOG_DBG, + struct renepay *renepay = get_renepay(cmd->plugin); + plugin_log(cmd->plugin, LOG_DBG, "sendpay_success notification: %.*s", json_tok_full_len(params), json_tok_full(buf, params)); @@ -428,12 +434,12 @@ struct command_result *notification_sendpay_success(struct command *cmd, struct routekey *key = tal_routekey_from_json(tmpctx, buf, sub); if (!key) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Unable to get routekey from sendpay_success: %.*s", json_tok_full_len(sub), json_tok_full(buf, sub)); struct payment *payment = - payment_map_get(pay_plugin->payment_map, key->payment_hash); + payment_map_get(renepay->payment_map, key->payment_hash); if (!payment) { /* This sendpay is not linked to any route in our database, we @@ -444,13 +450,13 @@ struct command_result *notification_sendpay_success(struct command *cmd, struct routetracker *routetracker = payment->routetracker; assert(routetracker); struct route *route = - route_map_get(pay_plugin->pending_routes, key); + route_map_get(renepay->pending_routes, key); if (!route) { /* This route was not created by us, make a basic route * information dummy without hop details to pass onward. */ route = tal_route_from_json(tmpctx, buf, sub); if(!route) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Failed to get route information from sendpay_success: %.*s", json_tok_full_len(sub), json_tok_full(buf, sub)); } @@ -459,11 +465,11 @@ struct command_result *notification_sendpay_success(struct command *cmd, route->result = tal_sendpay_result_from_json(route, buf, sub, route->shared_secrets); if (route->result == NULL) - plugin_err(pay_plugin->plugin, + plugin_err(cmd->plugin, "Unable to parse sendpay_success: %.*s", json_tok_full_len(sub), json_tok_full(buf, sub)); assert(route->result->status == SENDPAY_COMPLETE); - routetracker_add_to_final(payment->routetracker, route); + routetracker_add_to_final(payment, payment->routetracker, route); return notification_handled(cmd); } diff --git a/plugins/renepay/routetracker.h b/plugins/renepay/routetracker.h index 88ccbfc24cf2..57adc3f0bcaa 100644 --- a/plugins/renepay/routetracker.h +++ b/plugins/renepay/routetracker.h @@ -47,7 +47,8 @@ struct command_result *notification_sendpay_success(struct command *cmd, const char *buf, const jsmntok_t *params); -void routetracker_add_to_final(struct routetracker *routetracker, +void routetracker_add_to_final(struct payment *payment, + struct routetracker *routetracker, struct route *route); // FIXME: double-check that we actually get one notification for each sendpay, diff --git a/plugins/renepay/sendpay.c b/plugins/renepay/sendpay.c index 3c3049902147..afb5880a1805 100644 --- a/plugins/renepay/sendpay.c +++ b/plugins/renepay/sendpay.c @@ -3,8 +3,9 @@ #include #include #include -#include +#include #include +#include static struct command_result *param_route_hops(struct command *cmd, const char *name, @@ -395,6 +396,7 @@ static struct command_result *waitblockheight_done(struct command *cmd, const jsmntok_t *toks, struct renesendpay *renesendpay) { + struct renepay *renepay = get_renepay(cmd->plugin); const char *err; err = json_scan(tmpctx, buffer, toks, "{blockheight:%}", JSON_SCAN(json_to_u32, &renesendpay->blockheight)); @@ -456,7 +458,7 @@ static struct command_result *waitblockheight_done(struct command *cmd, // we need to make sure first that we don't lose older features, // like for example to be able to show in listsendpays the // recepient of the payment. - onion = create_onion(tmpctx, renesendpay, pay_plugin->my_id, 0); + onion = create_onion(tmpctx, renesendpay, renepay->my_id, 0); req = jsonrpc_request_start(cmd, "injectpaymentonion", renesendpay_done, rpc_fail, renesendpay); diff --git a/plugins/renepay/utils.c b/plugins/renepay/utils.c index 9049abfdcd2b..f5d9905ad5ef 100644 --- a/plugins/renepay/utils.c +++ b/plugins/renepay/utils.c @@ -2,6 +2,11 @@ #include #include +struct renepay *get_renepay(struct plugin *plugin) +{ + return plugin_get_data(plugin, struct renepay); +} + struct rpcbatch { size_t num_remaining; struct command *cmd; diff --git a/plugins/renepay/utils.h b/plugins/renepay/utils.h index 94a851ae46b5..c509058ca869 100644 --- a/plugins/renepay/utils.h +++ b/plugins/renepay/utils.h @@ -3,6 +3,8 @@ #include "config.h" +struct renepay *get_renepay(struct plugin *plugin); + struct rpcbatch; struct rpcbatch * From 2fddfbad28aeae34e304a4b14103f2e865aa87b3 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Fri, 21 Feb 2025 12:50:45 +0100 Subject: [PATCH 12/22] renepay: use batches to send payment routes Sending requests with batches allow us to avoid race conditions when the payment plugin goes to the next state before the sendpay RPC have not yet completed. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 148 ++++++++++++++++++++++++++++++- plugins/renepay/routetracker.c | 155 ++------------------------------- plugins/renepay/routetracker.h | 7 ++ 3 files changed, 156 insertions(+), 154 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index af99e4ddfff9..2dc50d93c8dc 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -595,6 +595,146 @@ REGISTER_PAYMENT_MODIFIER(getroutes, getroutes_cb); * request calling sendpay. */ +static struct command_result *sendroutes_done(struct command *cmd, + struct payment *payment) +{ + return payment_continue(payment); +} + +/* Callback function for sendpay request success. */ +static struct command_result * +renesendpay_done(struct command *cmd, const char *method UNUSED, + const char *buf, const jsmntok_t *result, struct route *route) +{ + assert(route); + struct renepay *renepay = get_renepay(cmd->plugin); + struct payment *payment = route_get_payment_verify(renepay, route); + route_pending_register(payment, payment->routetracker, route); + + const jsmntok_t *t; + size_t i; + bool ret; + + const jsmntok_t *secretstok = + json_get_member(buf, result, "shared_secrets"); + + if (secretstok) { + assert(secretstok->type == JSMN_ARRAY); + + route->shared_secrets = + tal_arr(route, struct secret, secretstok->size); + json_for_each_arr(i, t, secretstok) + { + ret = json_to_secret(buf, t, &route->shared_secrets[i]); + assert(ret); + } + } else + route->shared_secrets = NULL; + return command_still_pending(cmd); +} + +/* FIXME: check when will renesendpay fail */ +static struct command_result * +renesendpay_fail(struct command *cmd, const char *method UNUSED, + const char *buf, const jsmntok_t *tok, struct route *route) +{ + assert(route); + struct renepay *renepay = get_renepay(cmd->plugin); + struct payment *payment = route_get_payment_verify(renepay, route); + struct routetracker *routetracker = payment->routetracker; + assert(routetracker); + + enum jsonrpc_errcode errcode; + const char *msg; + const char *err; + + err = json_scan(tmpctx, buf, tok, "{code:%,message:%}", + JSON_SCAN(json_to_jsonrpc_errcode, &errcode), + JSON_SCAN_TAL(tmpctx, json_strdup, &msg)); + if (err) + plugin_err(cmd->plugin, + "Unable to parse sendpay error: %s, json: %.*s", err, + json_tok_full_len(tok), json_tok_full(buf, tok)); + + payment_note(payment, LOG_INFORM, + "Sendpay failed: partid=%" PRIu64 + " errorcode:%d message=%s", + route->key.partid, errcode, msg); + + if (errcode != PAY_TRY_OTHER_ROUTE) { + plugin_log(cmd->plugin, LOG_UNUSUAL, + "Strange error from sendpay: %.*s", + json_tok_full_len(tok), json_tok_full(buf, tok)); + } + + /* There is no new knowledge from this kind of failure. + * We just disable this scid. */ + // FIXME: askrene disable this channel + struct short_channel_id_dir scidd_disable = { + .scid = route->hops[0].scid, .dir = route->hops[0].direction}; + payment_disable_chan(payment, scidd_disable, LOG_INFORM, + "sendpay didn't like first hop: %s", msg); + + if (!route_map_del(routetracker->sent_routes, route)) + plugin_err(cmd->plugin, "%s: route (%s) is not marked as sent", + __func__, fmt_routekey(tmpctx, &route->key)); + tal_free(route); + return command_still_pending(cmd); +} + +static void add_sendpay_request(struct rpcbatch *batch, struct route *route, + struct payment *payment) +{ + struct payment_info *pinfo = &payment->payment_info; + struct out_req *req = add_to_rpcbatch( + batch, "renesendpay", renesendpay_done, renesendpay_fail, route); + const size_t pathlen = tal_count(route->hops); + json_add_sha256(req->js, "payment_hash", &route->key.payment_hash); + json_add_u64(req->js, "partid", route->key.partid); + json_add_u64(req->js, "groupid", route->key.groupid); + json_add_string(req->js, "invoice", pinfo->invstr); + json_add_node_id(req->js, "destination", &pinfo->destination); + json_add_amount_msat(req->js, "amount_msat", route->amount_deliver); + json_add_amount_msat(req->js, "total_amount_msat", pinfo->amount); + json_add_u32(req->js, "final_cltv", pinfo->final_cltv); + + if (pinfo->label) + json_add_string(req->js, "label", pinfo->label); + if (pinfo->description) + json_add_string(req->js, "description", pinfo->description); + + json_array_start(req->js, "route"); + /* An empty route means a payment to oneself, pathlen=0 */ + for (size_t j = 0; j < pathlen; j++) { + const struct route_hop *hop = &route->hops[j]; + json_object_start(req->js, NULL); + json_add_node_id(req->js, "id", &hop->node_id); + json_add_short_channel_id(req->js, "channel", hop->scid); + json_add_amount_msat(req->js, "amount_msat", hop->amount); + json_add_num(req->js, "direction", hop->direction); + json_add_u32(req->js, "delay", hop->delay); + json_add_string(req->js, "style", "tlv"); + json_object_end(req->js); + } + json_array_end(req->js); + + /* Either we have a payment_secret for BOLT11 or blinded_paths for + * BOLT12 */ + if (pinfo->payment_secret) + json_add_secret(req->js, "payment_secret", + pinfo->payment_secret); + else { + assert(pinfo->blinded_paths); + const struct blinded_path *bpath = + pinfo->blinded_paths[route->path_num]; + json_myadd_blinded_path(req->js, "blinded_path", bpath); + } + send_outreq(req); + route_map_add(payment->routetracker->sent_routes, route); + if (taken(route)) + tal_steal(payment->routetracker->sent_routes, route); +} + static struct command_result *send_routes_cb(struct payment *payment) { assert(payment); @@ -609,11 +749,11 @@ static struct command_result *send_routes_cb(struct payment *payment) } struct command *cmd = payment_command(payment); assert(cmd); + struct rpcbatch *batch = rpcbatch_new(cmd, sendroutes_done, payment); + for (size_t i = 0; i < tal_count(routetracker->computed_routes); i++) { struct route *route = routetracker->computed_routes[i]; - - route_sendpay_request(cmd, take(route), payment); - + add_sendpay_request(batch, take(route), payment); payment_note(payment, LOG_INFORM, "Sent route request: partid=%" PRIu64 " amount=%s prob=%.3lf fees=%s delay=%u path=%s", @@ -624,7 +764,7 @@ static struct command_result *send_routes_cb(struct payment *payment) route_delay(route), fmt_route_path(tmpctx, route)); } tal_resize(&routetracker->computed_routes, 0); - return payment_continue(payment); + return rpcbatch_done(batch); } REGISTER_PAYMENT_MODIFIER(send_routes, send_routes_cb); diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index 065d599b4f3a..7965a19a80f5 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -7,8 +7,8 @@ #include #include -static struct payment *route_get_payment_verify(struct renepay *renepay, - struct route *route) +struct payment *route_get_payment_verify(struct renepay *renepay, + struct route *route) { struct payment *payment = payment_map_get(renepay->payment_map, route->key.payment_hash); @@ -98,9 +98,9 @@ static void remove_route(struct route *route, struct route_map *map) * - after a sendpay is accepted, * - or after listsendpays reveals some pending route that we didn't * previously know about. */ -static void route_pending_register(struct payment *payment, - struct routetracker *routetracker, - struct route *route) +void route_pending_register(struct payment *payment, + struct routetracker *routetracker, + struct route *route) { assert(route); assert(routetracker); @@ -140,95 +140,6 @@ static void route_pending_register(struct payment *payment, } } -/* Callback function for sendpay request success. */ -static struct command_result *sendpay_done(struct command *cmd, - const char *method UNUSED, - const char *buf, - const jsmntok_t *result, - struct route *route) -{ - assert(route); - struct renepay *renepay = get_renepay(cmd->plugin); - struct payment *payment = route_get_payment_verify(renepay, route); - route_pending_register(payment, payment->routetracker, route); - - const jsmntok_t *t; - size_t i; - bool ret; - - const jsmntok_t *secretstok = - json_get_member(buf, result, "shared_secrets"); - - if (secretstok) { - assert(secretstok->type == JSMN_ARRAY); - - route->shared_secrets = - tal_arr(route, struct secret, secretstok->size); - json_for_each_arr(i, t, secretstok) - { - ret = json_to_secret(buf, t, &route->shared_secrets[i]); - assert(ret); - } - } else - route->shared_secrets = NULL; - return command_still_pending(cmd); -} - -/* sendpay really only fails immediately in two ways: - * 1. We screwed up and misused the API. - * 2. The first peer is disconnected. - */ -static struct command_result *sendpay_failed(struct command *cmd, - const char *method UNUSED, - const char *buf, - const jsmntok_t *tok, - struct route *route) -{ - assert(route); - struct renepay *renepay = get_renepay(cmd->plugin); - struct payment *payment = route_get_payment_verify(renepay, route); - struct routetracker *routetracker = payment->routetracker; - assert(routetracker); - - enum jsonrpc_errcode errcode; - const char *msg; - const char *err; - - err = json_scan(tmpctx, buf, tok, "{code:%,message:%}", - JSON_SCAN(json_to_jsonrpc_errcode, &errcode), - JSON_SCAN_TAL(tmpctx, json_strdup, &msg)); - if (err) - plugin_err(cmd->plugin, - "Unable to parse sendpay error: %s, json: %.*s", err, - json_tok_full_len(tok), json_tok_full(buf, tok)); - - payment_note(payment, LOG_INFORM, - "Sendpay failed: partid=%" PRIu64 - " errorcode:%d message=%s", - route->key.partid, errcode, msg); - - if (errcode != PAY_TRY_OTHER_ROUTE) { - plugin_log(cmd->plugin, LOG_UNUSUAL, - "Strange error from sendpay: %.*s", - json_tok_full_len(tok), json_tok_full(buf, tok)); - } - - /* There is no new knowledge from this kind of failure. - * We just disable this scid. */ - struct short_channel_id_dir scidd_disable = { - .scid = route->hops[0].scid, .dir = route->hops[0].direction}; - payment_disable_chan(payment, scidd_disable, LOG_INFORM, - "sendpay didn't like first hop: %s", msg); - - if (!route_map_del(routetracker->sent_routes, route)) - plugin_err(cmd->plugin, - "%s: route (%s) is not marked as sent", - __func__, - fmt_routekey(tmpctx, &route->key)); - tal_free(route); - return command_still_pending(cmd); -} - void payment_collect_results(struct payment *payment, struct preimage **payment_preimage, enum jsonrpc_errcode *final_error, @@ -296,62 +207,6 @@ void payment_collect_results(struct payment *payment, tal_resize(&routetracker->finalized_routes, 0); } -struct command_result *route_sendpay_request(struct command *cmd, - struct route *route TAKES, - struct payment *payment) -{ - const struct payment_info *pinfo = &payment->payment_info; - struct out_req *req = jsonrpc_request_start( - cmd, "renesendpay", sendpay_done, sendpay_failed, route); - - const size_t pathlen = tal_count(route->hops); - json_add_sha256(req->js, "payment_hash", &pinfo->payment_hash); - json_add_u64(req->js, "partid", route->key.partid); - json_add_u64(req->js, "groupid", route->key.groupid); - json_add_string(req->js, "invoice", pinfo->invstr); - json_add_node_id(req->js, "destination", &pinfo->destination); - json_add_amount_msat(req->js, "amount_msat", route->amount_deliver); - json_add_amount_msat(req->js, "total_amount_msat", pinfo->amount); - json_add_u32(req->js, "final_cltv", pinfo->final_cltv); - - if (pinfo->label) - json_add_string(req->js, "label", pinfo->label); - if (pinfo->description) - json_add_string(req->js, "description", pinfo->description); - - json_array_start(req->js, "route"); - /* An empty route means a payment to oneself, pathlen=0 */ - for (size_t j = 0; j < pathlen; j++) { - const struct route_hop *hop = &route->hops[j]; - json_object_start(req->js, NULL); - json_add_node_id(req->js, "id", &hop->node_id); - json_add_short_channel_id(req->js, "channel", hop->scid); - json_add_amount_msat(req->js, "amount_msat", hop->amount); - json_add_num(req->js, "direction", hop->direction); - json_add_u32(req->js, "delay", hop->delay); - json_add_string(req->js, "style", "tlv"); - json_object_end(req->js); - } - json_array_end(req->js); - - /* Either we have a payment_secret for BOLT11 or blinded_paths for - * BOLT12 */ - if (pinfo->payment_secret) - json_add_secret(req->js, "payment_secret", pinfo->payment_secret); - else { - assert(pinfo->blinded_paths); - const struct blinded_path *bpath = - pinfo->blinded_paths[route->path_num]; - json_myadd_blinded_path(req->js, "blinded_path", bpath); - - } - - route_map_add(payment->routetracker->sent_routes, route); - if (taken(route)) - tal_steal(payment->routetracker->sent_routes, route); - return send_outreq(req); -} - struct command_result *notification_sendpay_failure(struct command *cmd, const char *buf, const jsmntok_t *params) diff --git a/plugins/renepay/routetracker.h b/plugins/renepay/routetracker.h index 57adc3f0bcaa..2f84e1ddf5c1 100644 --- a/plugins/renepay/routetracker.h +++ b/plugins/renepay/routetracker.h @@ -51,6 +51,13 @@ void routetracker_add_to_final(struct payment *payment, struct routetracker *routetracker, struct route *route); +void route_pending_register(struct payment *payment, + struct routetracker *routetracker, + struct route *route); + +struct payment *route_get_payment_verify(struct renepay *renepay, + struct route *route); + // FIXME: double-check that we actually get one notification for each sendpay, // ie. that after some time we don't have yet pending sendpays for old failed or // successful payments that we havent processed because we haven't received the From a797e0071ff0ff8fc34784850b6e7fb1f22157e0 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Sat, 22 Feb 2025 12:12:25 +0100 Subject: [PATCH 13/22] renepay: reserve liquidity for routes Use askrene-reserve API to lock-in the liquidity of the channels in use for pending payment route. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 2dc50d93c8dc..9253658ac522 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -601,6 +601,26 @@ static struct command_result *sendroutes_done(struct command *cmd, return payment_continue(payment); } +static struct command_result *reserve_done(struct command *cmd, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *result UNUSED, + struct route *route UNUSED) +{ + return command_still_pending(cmd); +} + +static struct command_result *reserve_fail(struct command *cmd, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *result UNUSED, + struct route *route) +{ + plugin_log(cmd->plugin, LOG_UNUSUAL, "failed to reserve route (%s)", + fmt_routekey(tmpctx, &route->key)); + return command_still_pending(cmd); +} + /* Callback function for sendpay request success. */ static struct command_result * renesendpay_done(struct command *cmd, const char *method UNUSED, @@ -630,7 +650,22 @@ renesendpay_done(struct command *cmd, const char *method UNUSED, } } else route->shared_secrets = NULL; - return command_still_pending(cmd); + + struct out_req *req = jsonrpc_request_start( + cmd, "askrene-reserve", reserve_done, reserve_fail, route); + json_array_start(req->js, "path"); + for (i = 0; i < tal_count(route->hops); i++) { + const struct route_hop *hop = &route->hops[i]; + struct short_channel_id_dir scidd = {.scid = hop->scid, + .dir = hop->direction}; + json_object_start(req->js, NULL); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", + scidd); + json_add_amount_msat(req->js, "amount_msat", hop->amount); + json_object_end(req->js); + } + json_array_end(req->js); + return send_outreq(req); } /* FIXME: check when will renesendpay fail */ From 98e8fa097add7c92c26c3236453261e21173655c Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Sat, 22 Feb 2025 12:53:49 +0100 Subject: [PATCH 14/22] renepay: unreserve completed routes Use askrene-unreserve to remove reserved liquidity associated with routes that have completed, either by success or failure. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 44 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 9253658ac522..e8fa91a96286 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -601,12 +601,54 @@ static struct command_result *sendroutes_done(struct command *cmd, return payment_continue(payment); } +static struct command_result *unreserve_done(struct command *aux_cmd, + const char *method UNUSED, + const char *buf UNUSED, + const jsmntok_t *result UNUSED, + struct route *route UNUSED) +{ + return aux_command_done(aux_cmd); +} + +static struct command_result * +unreserve_fail(struct command *aux_cmd, const char *method, const char *buf, + const jsmntok_t *result, struct route *route UNUSED) +{ + plugin_log(aux_cmd->plugin, LOG_UNUSUAL, "%s failed: %.*s", method, + json_tok_full_len(result), json_tok_full(buf, result)); + return aux_command_done(aux_cmd); +} + +static void unreserve_route(struct route *route, struct command *aux_cmd) +{ + struct out_req *req = + jsonrpc_request_start(aux_cmd, "askrene-unreserve", unreserve_done, + unreserve_fail, route); + json_array_start(req->js, "path"); + for (size_t i = 0; i < tal_count(route->hops); i++) { + const struct route_hop *hop = &route->hops[i]; + struct short_channel_id_dir scidd = {.scid = hop->scid, + .dir = hop->direction}; + json_object_start(req->js, NULL); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", + scidd); + json_add_amount_msat(req->js, "amount_msat", hop->amount); + json_object_end(req->js); + } + json_array_end(req->js); + send_outreq(req); +} + static struct command_result *reserve_done(struct command *cmd, const char *method UNUSED, const char *buf UNUSED, const jsmntok_t *result UNUSED, - struct route *route UNUSED) + struct route *route) { + /* A new command is issued to handle the destruction of this route. + * I hope aux_cmd outlives the current payment session cmd. */ + struct command *aux_cmd = aux_command(cmd); + tal_add_destructor2(route, unreserve_route, aux_cmd); return command_still_pending(cmd); } From 91abf5fb694c4d7c44a929cb361d6852abb7450f Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Tue, 25 Feb 2025 14:40:31 +0100 Subject: [PATCH 15/22] renepay: refactor routefail functions Make extensive use of rpc batches so that we ensure all request have been processed before the notification is closed as handled. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/routefail.c | 178 +++++++++++++++++---------------- plugins/renepay/routefail.h | 4 +- plugins/renepay/routetracker.c | 24 ++++- 3 files changed, 115 insertions(+), 91 deletions(-) diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 3ba647e23429..8e1cb8d8337d 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -15,29 +15,26 @@ enum node_type { }; struct routefail { + struct rpcbatch *batch; struct payment *payment; struct route *route; }; -static void update_gossip(struct command *cmd, - struct request_batch *batch, - struct routefail *r); - -static void handle_failure(struct command *cmd, - struct request_batch *batch, - struct routefail *r); - -static struct command_result *routefail_end(struct command *cmd, - struct routefail *r) +static bool get_erring_scidd(struct route *route, + struct short_channel_id_dir *scidd) { - /* Notify the tracker that route has failed and routefail have completed - * handling all possible errors cases. */ - routetracker_add_to_final(r->payment, r->payment->routetracker, - r->route); - r = tal_free(r); - return notification_handled(cmd); + assert(scidd); + if (!route->result->erring_direction || !route->result->erring_channel) + return false; + scidd->dir = *route->result->erring_direction; + scidd->scid = *route->result->erring_channel; + return true; } +static void update_gossip(struct routefail *r); + +static void handle_failure(struct routefail *r); + static struct command_result *log_routefail_err(struct command *cmd, const char *method, const char *buf, @@ -50,27 +47,59 @@ static struct command_result *log_routefail_err(struct command *cmd, return command_still_pending(cmd); } -struct command_result *routefail_start(const tal_t *ctx, +static struct command_result *routefail_done(struct command *cmd, + struct routefail *r) +{ + /* Notify the tracker that route has failed and routefail have completed + * handling all possible errors cases. */ + routetracker_add_to_final(r->payment, r->payment->routetracker, r->route); + tal_free(r); + return notification_handled(cmd); +} + +struct command_result *routefail_start(struct command *cmd, struct payment *payment, - struct route *route, struct command *cmd) + struct route *route) { - assert(route); - struct routefail *r = tal(ctx, struct routefail); + struct routefail *r = tal(cmd, struct routefail); + r->batch = rpcbatch_new(cmd, routefail_done, r); + r->route = route; + r->payment = payment; + update_gossip(r); + handle_failure(r); + return rpcbatch_done(r->batch); +} - if (payment == NULL) - plugin_err(cmd->plugin, - "%s: payment with hash %s not found.", - __func__, - fmt_sha256(tmpctx, &route->key.payment_hash)); +static void disable_node(struct routefail *r, struct node_id *node) +{ + struct out_req *req = add_to_rpcbatch(r->batch, "askrene-disable-node", + NULL, log_routefail_err, r); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_node_id(req->js, "node", node); + send_outreq(req); +} - r->payment = payment; - r->route = route; +static void disable_channel(struct routefail *r, + struct short_channel_id_dir scidd) +{ + struct out_req *req = add_to_rpcbatch( + r->batch, "askrene-udpate-channel", NULL, log_routefail_err, r); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_bool(req->js, "enabled", false); + send_outreq(req); +} - struct request_batch *batch = - request_batch_new(cmd, NULL, log_routefail_err, routefail_end, r); - update_gossip(cmd, batch, r); - handle_failure(cmd, batch, r); - return batch_done(cmd, batch); +static void bias_channel(struct routefail *r, struct short_channel_id_dir scidd, + int bias) +{ + // FIXME: we want to increment the bias, not set it + struct out_req *req = add_to_rpcbatch(r->batch, "askrene-bias-channel", + NULL, log_routefail_err, r); + json_add_string(req->js, "layer", r->payment->payment_layer); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_num(req->js, "bias", bias); + send_outreq(req); } /***************************************************************************** @@ -128,9 +157,24 @@ static u8 *channel_update_from_onion_error(const tal_t *ctx, return patch_channel_update(ctx, take(channel_update)); } -static void update_gossip(struct command *cmd, - struct request_batch *batch, - struct routefail *r) +static struct command_result * +addgossip_fail(struct command *cmd, const char *method, const char *buf, + const jsmntok_t *result, struct routefail *r) +{ + struct short_channel_id_dir scidd; + if (get_erring_scidd(r->route, &scidd)) { + plugin_log(cmd->plugin, LOG_UNUSUAL, + "failed to update gossip of erring channel %s", + fmt_short_channel_id_dir(tmpctx, &scidd)); + disable_channel(r, scidd); + } else { + plugin_log(cmd->plugin, LOG_UNUSUAL, + "failed to update gossip of UNKNOWN erring channel"); + } + return command_still_pending(cmd); +} + +static void update_gossip(struct routefail *r) { /* if there is no raw_message we continue */ if (!r->route->result->raw_message) @@ -142,7 +186,8 @@ static void update_gossip(struct command *cmd, if (!update) goto skip_update_gossip; - struct out_req *req = add_to_batch(cmd, batch, "addgossip"); + struct out_req *req = add_to_rpcbatch( + r->batch, "addgossip", NULL, addgossip_fail, r); json_add_hex_talarr(req->js, "message", update); send_outreq(req); @@ -175,42 +220,8 @@ static void route_final_error(struct route *route, enum jsonrpc_errcode error, route->final_msg = tal_strdup(route, what); } -static void disable_node(struct command *cmd, struct request_batch *batch, - struct routefail *r, struct node_id *node) -{ - struct out_req *req = add_to_batch(cmd, batch, "askrene-disable-node"); - json_add_string(req->js, "layer", r->payment->payment_layer); - json_add_node_id(req->js, "node", node); - send_outreq(req); -} - -static void disable_channel(struct command *cmd, struct request_batch *batch, - struct routefail *r, struct short_channel_id_dir scidd) -{ - struct out_req *req = - add_to_batch(cmd, batch, "askrene-udpate-channel"); - json_add_string(req->js, "layer", r->payment->payment_layer); - json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); - json_add_bool(req->js, "enabled", false); - send_outreq(req); -} - -static void bias_channel(struct command *cmd, struct request_batch *batch, - struct routefail *r, struct short_channel_id_dir scidd, - int bias) -{ - // FIXME: we want to increment the bias, not set it - struct out_req *req = add_to_batch(cmd, batch, "askrene-bias-channel"); - json_add_string(req->js, "layer", r->payment->payment_layer); - json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); - json_add_num(req->js, "bias", bias); - send_outreq(req); -} - /* FIXME: do proper error handling for BOLT12 */ -static void handle_failure(struct command *cmd, - struct request_batch *batch, - struct routefail *r) +static void handle_failure(struct routefail *r) { /* BOLT #4: * @@ -259,6 +270,7 @@ static void handle_failure(struct command *cmd, assert(result); struct payment *payment = r->payment; assert(payment); + struct short_channel_id_dir scidd; int path_len = 0; if (route->hops) @@ -334,8 +346,7 @@ static void handle_failure(struct command *cmd, LOG_DBG, "received %s from previous hop", onion_wire_name(failcode)); disable_node( - cmd, batch, r, - &route->hops[*result->erring_index].node_id); + r, &route->hops[*result->erring_index].node_id); break; case UNKNOWN_NODE: break; @@ -366,8 +377,7 @@ static void handle_failure(struct command *cmd, LOG_INFORM, "received error %s", onion_wire_name(failcode)); disable_node( - cmd, batch, r, - &route->hops[*result->erring_index - 1].node_id); + r, &route->hops[*result->erring_index - 1].node_id); break; case UNKNOWN_NODE: break; @@ -417,8 +427,7 @@ static void handle_failure(struct command *cmd, LOG_INFORM, "received error %s", onion_wire_name(failcode)); disable_node( - cmd, batch, r, - &route->hops[*result->erring_index - 1].node_id); + r, &route->hops[*result->erring_index - 1].node_id); break; case UNKNOWN_NODE: break; @@ -457,12 +466,10 @@ static void handle_failure(struct command *cmd, case INTERMEDIATE_NODE: if (!route->hops) break; - struct short_channel_id_dir scidd = { - .scid = route->hops[*result->erring_index].scid, - .dir = route->hops[*result->erring_index].direction}; payment_disable_chan(payment, scidd, LOG_INFORM, "%s", onion_wire_name(failcode)); - disable_channel(cmd, batch, r, scidd); + if (get_erring_scidd(r->route, &scidd)) + disable_channel(r, scidd); break; case UNKNOWN_NODE: break; @@ -490,8 +497,7 @@ static void handle_failure(struct command *cmd, LOG_INFORM, "received error %s", onion_wire_name(failcode)); disable_node( - cmd, batch, r, - &route->hops[*result->erring_index - 1].node_id); + r, &route->hops[*result->erring_index - 1].node_id); break; case ORIGIN_NODE: case FINAL_NODE: @@ -534,13 +540,11 @@ static void handle_failure(struct command *cmd, /* Usually this means we need to update the channel * information and try again. To avoid hitting this * error again with the same channel we flag it. */ - struct short_channel_id_dir scidd = { - .scid = route->hops[*result->erring_index].scid, - .dir = route->hops[*result->erring_index].direction}; payment_warn_chan(payment, scidd, LOG_INFORM, "received error %s", onion_wire_name(failcode)); - bias_channel(cmd, batch, r, scidd, -1); + if (get_erring_scidd(r->route, &scidd)) + bias_channel(r, scidd, -1); break; case UNKNOWN_NODE: break; diff --git a/plugins/renepay/routefail.h b/plugins/renepay/routefail.h index 509945b7af9f..10e24aa94607 100644 --- a/plugins/renepay/routefail.h +++ b/plugins/renepay/routefail.h @@ -6,8 +6,8 @@ #include "config.h" #include -struct command_result *routefail_start(const tal_t *ctx, +struct command_result *routefail_start(struct command *cmd, struct payment *payment, - struct route *route, struct command *cmd); + struct route *route); #endif /* LIGHTNING_PLUGINS_RENEPAY_ROUTEFAIL_H */ diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index 7965a19a80f5..5aae696179d2 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -207,6 +207,26 @@ void payment_collect_results(struct payment *payment, tal_resize(&routetracker->finalized_routes, 0); } +static void get_erring_scidd_from_index(struct route *route) +{ + struct payment_result *result = route->result; + /* Both direction and short_channel_id are known, this step is not + * necessary. */ + if (result->erring_direction && result->erring_channel) + return; + /* If the hops or the index are not known, this step is not possible. */ + if (!route->hops || !result->erring_index) + return; + /* Is this an error in the destination? */ + if (*result->erring_index >= tal_count(route->hops)) + return; + result->erring_channel = + tal_dup(result, struct short_channel_id, + &route->hops[*result->erring_index].scid); + result->erring_direction = + tal_dup(result, int, &route->hops[*result->erring_index].direction); +} + struct command_result *notification_sendpay_failure(struct command *cmd, const char *buf, const jsmntok_t *params) @@ -270,10 +290,10 @@ struct command_result *notification_sendpay_failure(struct command *cmd, status_str); route->result->status = SENDPAY_FAILED; } - + get_erring_scidd_from_index(route); /* we do some error processing steps before calling * route_failure_register. */ - return routefail_start(payment, payment, route, cmd); + return routefail_start(cmd, payment, route); } struct command_result *notification_sendpay_success(struct command *cmd, From 45342a2aca3889479842d5be402172142eec947b Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 26 Feb 2025 08:54:19 +0100 Subject: [PATCH 16/22] renepay: use askrene-inform-channel Use askrene-inform-channel to update the knowledge of the liquidity when a payment attempt fails. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/routefail.c | 48 ++++++++++++++++++++++++++++++++++ plugins/renepay/routetracker.c | 2 ++ 2 files changed, 50 insertions(+) diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 8e1cb8d8337d..1f2d2616fd23 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -2,11 +2,14 @@ #include #include #include +#include #include #include #include #include +#define MIN(x, y) ((x) < (y) ? (x) : (y)) + enum node_type { FINAL_NODE, INTERMEDIATE_NODE, @@ -102,6 +105,32 @@ static void bias_channel(struct routefail *r, struct short_channel_id_dir scidd, send_outreq(req); } +static void channel_can_send(struct routefail *r, + struct short_channel_id_dir scidd, + struct amount_msat amount) +{ + struct out_req *req = add_to_rpcbatch( + r->batch, "askrene-inform-channel", NULL, log_routefail_err, r); + json_add_string(req->js, "layer", RENEPAY_LAYER); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_amount_msat(req->js, "amount_msat", amount); + json_add_string(req->js, "inform", "unconstrained"); + send_outreq(req); +} + +static void channel_cannot_send(struct routefail *r, + struct short_channel_id_dir scidd, + struct amount_msat amount) +{ + struct out_req *req = add_to_rpcbatch( + r->batch, "askrene-inform-channel", NULL, log_routefail_err, r); + json_add_string(req->js, "layer", RENEPAY_LAYER); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", scidd); + json_add_amount_msat(req->js, "amount_msat", amount); + json_add_string(req->js, "inform", "constrained"); + send_outreq(req); +} + /***************************************************************************** * update_gossip * @@ -301,6 +330,25 @@ static void handle_failure(struct routefail *r) node_type = ORIGIN_NODE; else node_type = INTERMEDIATE_NODE; + + /* All channels before the hop that failed have supposedly the + * ability to forward the payment. This is information. */ + const int last_good_channel = + MIN(*result->erring_index, path_len) - 1; + for (int i = 0; i <= last_good_channel; i++) { + scidd.scid = route->hops[i].scid; + scidd.dir = route->hops[i].direction; + channel_can_send(r, scidd, route->hops[i].amount); + } + if (failcode == WIRE_TEMPORARY_CHANNEL_FAILURE && + (last_good_channel + 1) < path_len) { + scidd.scid = route->hops[last_good_channel + 1].scid; + scidd.dir = + route->hops[last_good_channel + 1].direction; + channel_cannot_send( + r, scidd, + route->hops[last_good_channel + 1].amount); + } } switch (failcode) { diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index 5aae696179d2..e74a1c42d199 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -345,6 +345,8 @@ struct command_result *notification_sendpay_success(struct command *cmd, json_tok_full_len(sub), json_tok_full(buf, sub)); assert(route->result->status == SENDPAY_COMPLETE); + // FIXME: call askrene-inform-channel with inform=succeeded for this + // route routetracker_add_to_final(payment, payment->routetracker, route); return notification_handled(cmd); } From 72cc777c14172b8dcbabcce8beda6e099eb6708d Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 26 Feb 2025 13:53:25 +0100 Subject: [PATCH 17/22] renepay: split send routes into two steps Splig send routes into two steps: 1. reserve liquidity, 2. call sendpay Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 98 +++++++++++++++++++++++++++++------------- 1 file changed, 67 insertions(+), 31 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index e8fa91a96286..5b39c0a94393 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -589,18 +589,11 @@ static struct command_result *getroutes_cb(struct payment *payment) REGISTER_PAYMENT_MODIFIER(getroutes, getroutes_cb); /***************************************************************************** - * send_routes + * reserve_routes * - * This payment modifier takes the payment routes and starts the payment - * request calling sendpay. + * Use askrene API to reserve liquidity on the computed routes. */ -static struct command_result *sendroutes_done(struct command *cmd, - struct payment *payment) -{ - return payment_continue(payment); -} - static struct command_result *unreserve_done(struct command *aux_cmd, const char *method UNUSED, const char *buf UNUSED, @@ -663,6 +656,62 @@ static struct command_result *reserve_fail(struct command *cmd, return command_still_pending(cmd); } +static struct command_result *reserve_routes_done(struct command *cmd, + struct payment *payment) +{ + return payment_continue(payment); +} + +static void add_reserve_request(struct rpcbatch *batch, struct route *route) +{ + struct out_req *req = add_to_rpcbatch( + batch, "askrene-reserve", reserve_done, reserve_fail, route); + json_array_start(req->js, "path"); + for (int i = 0; i < tal_count(route->hops); i++) { + const struct route_hop *hop = &route->hops[i]; + struct short_channel_id_dir scidd = {.scid = hop->scid, + .dir = hop->direction}; + json_object_start(req->js, NULL); + json_add_short_channel_id_dir(req->js, "short_channel_id_dir", + scidd); + json_add_amount_msat(req->js, "amount_msat", hop->amount); + json_object_end(req->js); + } + json_array_end(req->js); + send_outreq(req); +} + +static struct command_result *reserve_routes_cb(struct payment *payment) +{ + assert(payment); + struct command *cmd = payment_command(payment); + assert(cmd); + struct rpcbatch *batch = + rpcbatch_new(cmd, reserve_routes_done, payment); + + for (size_t i = 0; + i < tal_count(payment->routetracker->computed_routes); i++) { + struct route *route = payment->routetracker->computed_routes[i]; + add_reserve_request(batch, route); + } + return rpcbatch_done(batch); +} + +REGISTER_PAYMENT_MODIFIER(reserve_routes, reserve_routes_cb); + +/***************************************************************************** + * send_routes + * + * This payment modifier takes the payment routes and starts the payment + * request calling sendpay. + */ + +static struct command_result *sendroutes_done(struct command *cmd, + struct payment *payment) +{ + return payment_continue(payment); +} + /* Callback function for sendpay request success. */ static struct command_result * renesendpay_done(struct command *cmd, const char *method UNUSED, @@ -693,21 +742,7 @@ renesendpay_done(struct command *cmd, const char *method UNUSED, } else route->shared_secrets = NULL; - struct out_req *req = jsonrpc_request_start( - cmd, "askrene-reserve", reserve_done, reserve_fail, route); - json_array_start(req->js, "path"); - for (i = 0; i < tal_count(route->hops); i++) { - const struct route_hop *hop = &route->hops[i]; - struct short_channel_id_dir scidd = {.scid = hop->scid, - .dir = hop->direction}; - json_object_start(req->js, NULL); - json_add_short_channel_id_dir(req->js, "short_channel_id_dir", - scidd); - json_add_amount_msat(req->js, "amount_msat", hop->amount); - json_object_end(req->js); - } - json_array_end(req->js); - return send_outreq(req); + return command_still_pending(cmd); } /* FIXME: check when will renesendpay fail */ @@ -1427,13 +1462,14 @@ void *payment_virtual_program[] = { /*16*/ OP_CALL, &checktimeout_pay_mod, /*18*/ OP_CALL, &refreshgossmap_pay_mod, /*20*/ OP_CALL, &getroutes_pay_mod, - /*22*/ OP_CALL, &send_routes_pay_mod, + /*22*/ OP_CALL, &reserve_routes_pay_mod, + /*24*/ OP_CALL, &send_routes_pay_mod, /*do*/ - /*24*/ OP_CALL, &sleep_pay_mod, - /*26*/ OP_CALL, &collect_results_pay_mod, + /*26*/ OP_CALL, &sleep_pay_mod, + /*28*/ OP_CALL, &collect_results_pay_mod, /*while*/ - /*28*/ OP_IF, ¬haveresults_pay_cond, (void *)24, + /*30*/ OP_IF, ¬haveresults_pay_cond, (void *)26, /* while */ - /*31*/ OP_IF, &retry_pay_cond, (void *)14, - /*34*/ OP_CALL, &end_pay_mod, /* safety net, default failure if reached */ - /*36*/ NULL}; + /*33*/ OP_IF, &retry_pay_cond, (void *)14, + /*36*/ OP_CALL, &end_pay_mod, /* safety net, default failure if reached */ + /*38*/ NULL}; From 7f7d48ec0fcda80f462dcf1caf896432f2d4e7c6 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Thu, 27 Feb 2025 10:15:10 +0100 Subject: [PATCH 18/22] renepay: define a new struct rpcaction struct rpcaction: encapsulates the concept of an RPC action, ie. an RPC call object. It can be attached to an rpcbatch. Changelog-None. Signed-off-by: Lagrang3 --- plugins/renepay/utils.c | 39 +++++++++++++++++++++++++++++++++++++++ plugins/renepay/utils.h | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 75 insertions(+) diff --git a/plugins/renepay/utils.c b/plugins/renepay/utils.c index f5d9905ad5ef..43ef62e4ebb1 100644 --- a/plugins/renepay/utils.c +++ b/plugins/renepay/utils.c @@ -1,4 +1,5 @@ #include "config.h" +#include #include #include @@ -24,6 +25,44 @@ struct rpcbatch_aux { void *); }; +struct rpcaction { + const char *method; + void *arg; + void (*json_cb)(struct json_stream *, void *); + struct command_result *(*cb)(struct command *cmd, const char *, + const char *, const jsmntok_t *, void *); + struct command_result *(*errcb)(struct command *cmd, const char *, + const char *, const jsmntok_t *, + void *); +}; + +struct rpcaction *rpcaction_new_( + const tal_t *ctx, const char *cmdname, + struct command_result *(*cb)(struct command *, const char *, const char *, + const jsmntok_t *, void *), + struct command_result *(*errcb)(struct command *, const char *, + const char *, const jsmntok_t *, void *), + void (*json_cb)(struct json_stream *, void *), void *arg) +{ + struct rpcaction *action = tal(ctx, struct rpcaction); + action->method = tal_strdup(action, cmdname); + action->arg = arg; + action->cb = cb; + action->errcb = errcb; + action->json_cb = json_cb; + return action; +} + +struct out_req *rpcbatch_append_action(struct rpcbatch *batch, + struct rpcaction *action) +{ + struct out_req *req = add_to_rpcbatch_( + batch, action->method, action->cb, action->errcb, action->arg); + if (action->json_cb) + action->json_cb(req->js, action->arg); + return req; +} + struct rpcbatch * rpcbatch_new_(struct command *cmd, struct command_result *(*finalcb)(struct command *, void *), diff --git a/plugins/renepay/utils.h b/plugins/renepay/utils.h index c509058ca869..28e2cee5601f 100644 --- a/plugins/renepay/utils.h +++ b/plugins/renepay/utils.h @@ -56,4 +56,40 @@ struct out_req *add_to_rpcbatch_( struct command_result *rpcbatch_done(struct rpcbatch *batch); +struct rpcaction *rpcaction_new_( + const tal_t *ctx, const char *cmdname, + struct command_result *(*cb)(struct command *, const char *, const char *, + const jsmntok_t *, void *), + struct command_result *(*errcb)(struct command *, const char *, + const char *, const jsmntok_t *, void *), + void (*json_cb)(struct json_stream *, void *), void *arg); + +/* Returns a new rpcaction object. An rpcaction represents a single step an + * rpcbatch. It can be created before the batch and then appended. + * + * @ctx: allocator + * @cmdname: RPC name + * @cb: callback function on success + * @errcb: callback function on failure + * @jsoncb: callback function to populate the json stream + * @arg: callback functions argument + * */ +#define rpcaction_new(ctx, cmdname, cb, errcb, jsoncb, arg) \ + rpcaction_new_( \ + (ctx), (cmdname), \ + typesafe_cb_preargs(struct command_result *, void *, (cb), (arg), \ + struct command *command, const char *method, \ + const char *buf, const jsmntok_t *result), \ + typesafe_cb_preargs(struct command_result *, void *, (errcb), \ + (arg), struct command *command, \ + const char *method, const char *buf, \ + const jsmntok_t *result), \ + typesafe_cb_preargs(void, void *, (jsoncb), (arg), \ + struct json_stream *), \ + (arg)) + +/* Append an action into a batch. */ +struct out_req *rpcbatch_append_action(struct rpcbatch *batch, + struct rpcaction *action); + #endif /* LIGHTNING_PLUGINS_RENEPAY_UTILS_H */ From 4c815d2b847c217f8d39967b714ab2a63a369b25 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Thu, 27 Feb 2025 10:19:30 +0100 Subject: [PATCH 19/22] renepay: use rpcActions to unreserve routes Calling askrene-unreserve using rpcActions. Either: - after geting a fail notification, - or success notification, - or if the route destructor is called. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/json.c | 1 + plugins/renepay/mods.c | 63 ++++++++++++++++++++++------------ plugins/renepay/route.c | 1 + plugins/renepay/route.h | 3 ++ plugins/renepay/routefail.c | 18 +++++++--- plugins/renepay/routefail.h | 4 ++- plugins/renepay/routetracker.c | 24 +++++++++---- 7 files changed, 81 insertions(+), 33 deletions(-) diff --git a/plugins/renepay/json.c b/plugins/renepay/json.c index eb63ea6acf42..2b3b7e3dcb9c 100644 --- a/plugins/renepay/json.c +++ b/plugins/renepay/json.c @@ -67,6 +67,7 @@ struct route *tal_route_from_json(const tal_t *ctx, const char *buf, route->final_msg = NULL; route->final_error = LIGHTNINGD; route->shared_secrets = NULL; + route->unreserve_action = NULL; return route; fail: diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 5b39c0a94393..140050a2fffe 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -594,42 +594,55 @@ REGISTER_PAYMENT_MODIFIER(getroutes, getroutes_cb); * Use askrene API to reserve liquidity on the computed routes. */ -static struct command_result *unreserve_done(struct command *aux_cmd, - const char *method UNUSED, - const char *buf UNUSED, - const jsmntok_t *result UNUSED, - struct route *route UNUSED) +static struct command_result * +unreserve_done(struct command *cmd, const char *method, const char *buf, + const jsmntok_t *result, struct route *route UNUSED) { - return aux_command_done(aux_cmd); + route->unreserve_action = tal_free(route->unreserve_action); + return command_still_pending(cmd); } static struct command_result * -unreserve_fail(struct command *aux_cmd, const char *method, const char *buf, +unreserve_fail(struct command *cmd, const char *method, const char *buf, const jsmntok_t *result, struct route *route UNUSED) { - plugin_log(aux_cmd->plugin, LOG_UNUSUAL, "%s failed: %.*s", method, + plugin_log(cmd->plugin, LOG_UNUSUAL, "%s failed: %.*s", method, json_tok_full_len(result), json_tok_full(buf, result)); - return aux_command_done(aux_cmd); + return command_still_pending(cmd); } -static void unreserve_route(struct route *route, struct command *aux_cmd) +static void json_unreserve(struct json_stream *js, struct route *route) { - struct out_req *req = - jsonrpc_request_start(aux_cmd, "askrene-unreserve", unreserve_done, - unreserve_fail, route); - json_array_start(req->js, "path"); + json_array_start(js, "path"); for (size_t i = 0; i < tal_count(route->hops); i++) { const struct route_hop *hop = &route->hops[i]; struct short_channel_id_dir scidd = {.scid = hop->scid, .dir = hop->direction}; - json_object_start(req->js, NULL); - json_add_short_channel_id_dir(req->js, "short_channel_id_dir", + json_object_start(js, NULL); + json_add_short_channel_id_dir(js, "short_channel_id_dir", scidd); - json_add_amount_msat(req->js, "amount_msat", hop->amount); - json_object_end(req->js); + json_add_amount_msat(js, "amount_msat", hop->amount); + json_object_end(js); } - json_array_end(req->js); - send_outreq(req); + json_array_end(js); +} + +static struct command_result *unreserve_aux_final(struct command *aux_cmd, + struct route *route) +{ + return aux_command_done(aux_cmd); +} + +static void unreserve_route(struct route *route, struct command *aux_cmd) +{ + struct rpcbatch *batch = + rpcbatch_new(aux_cmd, unreserve_aux_final, route); + if (route->unreserve_action) { + struct out_req *req = + rpcbatch_append_action(batch, route->unreserve_action); + send_outreq(req); + } + rpcbatch_done(batch); } static struct command_result *reserve_done(struct command *cmd, @@ -639,8 +652,15 @@ static struct command_result *reserve_done(struct command *cmd, struct route *route) { /* A new command is issued to handle the destruction of this route. - * I hope aux_cmd outlives the current payment session cmd. */ + * I hope aux_cmd outlives the current payment session cmd. + * We encode this action as an entity of its own "struct rpcaction". + * We can attach the unreserve action to the route destructor but also + * if we need to unreserve after a notification we can do that as well + * without repeating the same code again, just re-use the action. */ struct command *aux_cmd = aux_command(cmd); + route->unreserve_action = + rpcaction_new(aux_cmd, "askrene-unreserve", unreserve_done, + unreserve_fail, json_unreserve, route); tal_add_destructor2(route, unreserve_route, aux_cmd); return command_still_pending(cmd); } @@ -664,6 +684,7 @@ static struct command_result *reserve_routes_done(struct command *cmd, static void add_reserve_request(struct rpcbatch *batch, struct route *route) { + assert(route->unreserve_action == NULL); struct out_req *req = add_to_rpcbatch( batch, "askrene-reserve", reserve_done, reserve_fail, route); json_array_start(req->js, "path"); diff --git a/plugins/renepay/route.c b/plugins/renepay/route.c index 340a4f2f1d7a..288b6227a646 100644 --- a/plugins/renepay/route.c +++ b/plugins/renepay/route.c @@ -21,6 +21,7 @@ struct route *new_route(const tal_t *ctx, u64 groupid, route->amount_sent = amount_sent; route->path_num = -1; route->shared_secrets = NULL; + route->unreserve_action = NULL; return route; } diff --git a/plugins/renepay/route.h b/plugins/renepay/route.h index a944033cdcc6..4d92a7f0b24e 100644 --- a/plugins/renepay/route.h +++ b/plugins/renepay/route.h @@ -75,6 +75,9 @@ struct route { /* blinded path index if any */ int path_num; + + /* An rpcaction that calls askrene-unreserve. */ + struct rpcaction *unreserve_action; }; static inline struct routekey routekey(const struct sha256 *hash, u64 groupid, diff --git a/plugins/renepay/routefail.c b/plugins/renepay/routefail.c index 1f2d2616fd23..41e34ab5c44e 100644 --- a/plugins/renepay/routefail.c +++ b/plugins/renepay/routefail.c @@ -60,14 +60,24 @@ static struct command_result *routefail_done(struct command *cmd, return notification_handled(cmd); } -struct command_result *routefail_start(struct command *cmd, - struct payment *payment, - struct route *route) +struct command_result *routesuccess_start(struct command *cmd, + struct route *route) { + // FIXME: call askrene-inform-channel with inform=succeeded for this + // route + struct renepay *renepay = get_renepay(cmd->plugin); + struct payment *payment = route_get_payment_verify(renepay, route); + routetracker_add_to_final(payment, payment->routetracker, route); + return notification_handled(cmd); +} + +struct command_result *routefail_start(struct command *cmd, struct route *route) +{ + struct renepay *renepay = get_renepay(cmd->plugin); struct routefail *r = tal(cmd, struct routefail); r->batch = rpcbatch_new(cmd, routefail_done, r); r->route = route; - r->payment = payment; + r->payment = route_get_payment_verify(renepay, route); update_gossip(r); handle_failure(r); return rpcbatch_done(r->batch); diff --git a/plugins/renepay/routefail.h b/plugins/renepay/routefail.h index 10e24aa94607..9fa2dccf42ac 100644 --- a/plugins/renepay/routefail.h +++ b/plugins/renepay/routefail.h @@ -7,7 +7,9 @@ #include struct command_result *routefail_start(struct command *cmd, - struct payment *payment, struct route *route); +struct command_result *routesuccess_start(struct command *cmd, + struct route *route); + #endif /* LIGHTNING_PLUGINS_RENEPAY_ROUTEFAIL_H */ diff --git a/plugins/renepay/routetracker.c b/plugins/renepay/routetracker.c index e74a1c42d199..46cd068d6c37 100644 --- a/plugins/renepay/routetracker.c +++ b/plugins/renepay/routetracker.c @@ -291,9 +291,15 @@ struct command_result *notification_sendpay_failure(struct command *cmd, route->result->status = SENDPAY_FAILED; } get_erring_scidd_from_index(route); - /* we do some error processing steps before calling - * route_failure_register. */ - return routefail_start(cmd, payment, route); + + /* Unreserve first and then call routefail_start */ + struct rpcbatch *batch = rpcbatch_new(cmd, routefail_start, route); + if (route->unreserve_action) { + struct out_req *req = + rpcbatch_append_action(batch, route->unreserve_action); + send_outreq(req); + } + return rpcbatch_done(batch); } struct command_result *notification_sendpay_success(struct command *cmd, @@ -345,8 +351,12 @@ struct command_result *notification_sendpay_success(struct command *cmd, json_tok_full_len(sub), json_tok_full(buf, sub)); assert(route->result->status == SENDPAY_COMPLETE); - // FIXME: call askrene-inform-channel with inform=succeeded for this - // route - routetracker_add_to_final(payment, payment->routetracker, route); - return notification_handled(cmd); + /* Unreserve first and then call routesuccess_start */ + struct rpcbatch *batch = rpcbatch_new(cmd, routesuccess_start, route); + if (route->unreserve_action) { + struct out_req *req = + rpcbatch_append_action(batch, route->unreserve_action); + send_outreq(req); + } + return rpcbatch_done(batch); } From 4eaa21d39e8079a3cb18c68d1444444a10cb39e5 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Fri, 28 Feb 2025 08:09:24 +0100 Subject: [PATCH 20/22] renepay: fine tuning test_renepay - skip test on local htlc max limits which is not supported by askrene, on privacy leak issue. - skip very extreme flow cases, where sats per HTLC in reserve must be taken into account. - adjust the expected error response for messages coming from askrene. - on getroutes failure return a command fail with the same error code as getroutes response. Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/mods.c | 20 ++++++++++++++------ tests/test_renepay.py | 36 +++++++++++++----------------------- 2 files changed, 27 insertions(+), 29 deletions(-) diff --git a/plugins/renepay/mods.c b/plugins/renepay/mods.c index 140050a2fffe..0ca329f8ddd6 100644 --- a/plugins/renepay/mods.c +++ b/plugins/renepay/mods.c @@ -503,12 +503,20 @@ static struct command_result *getroutes_fail(struct command *cmd, // return payment_fail(payment, PAY_STOPPED_RETRYING, "getroutes // failed to find a feasible solution %s", explain_error(buf, // tok)); - const jsmntok_t *messtok = json_get_member(buf, tok, "message"); - assert(messtok); - return payment_fail( - payment, PAYMENT_PENDING, - "getroutes failed to find a feasible solution: %.*s", - json_tok_full_len(messtok), json_tok_full(buf, messtok)); + enum jsonrpc_errcode errcode; + const char *msg; + const char *err = + json_scan(tmpctx, buf, tok, "{code:%,message:%}", + JSON_SCAN(json_to_jsonrpc_errcode, &errcode), + JSON_SCAN_TAL(tmpctx, json_strdup, &msg)); + if (err) + plugin_err(cmd->plugin, + "Unable to parse getroutes error: %s, json: %.*s", + err, json_tok_full_len(tok), + json_tok_full(buf, tok)); + return payment_fail(payment, errcode, + "getroutes failed to find a feasible solution: %s", + msg); } static struct command_result *getroutes_cb(struct payment *payment) diff --git a/tests/test_renepay.py b/tests/test_renepay.py index 392cb4bde9b4..098394b680c3 100644 --- a/tests/test_renepay.py +++ b/tests/test_renepay.py @@ -105,13 +105,16 @@ def test_errors(node_factory, bitcoind): inv_deleted = l6.rpc.invoice(send_amount, "test_renepay2", "description2")["bolt11"] l6.rpc.delinvoice("test_renepay2", "unpaid") - failmsg = r"We don\'t have any channels" + # What happens if we don't have any channels? + # This would be a useful error message: failmsg = r"We don\'t have any channels" + failmsg = f"Unknown source node {l1.info['id']}" with pytest.raises(RpcError, match=failmsg): l1.rpc.call("renepay", {"invstring": inv}) node_factory.join_nodes([l1, l2, l4], wait_for_announce=True, fundamount=1000000) node_factory.join_nodes([l1, l3, l5], wait_for_announce=True, fundamount=1000000) - failmsg = r"failed to find a feasible flow" + # What happens if the destination is unreacheable? + failmsg = r"There is no connection between source and destination" with pytest.raises(RpcError, match=failmsg): l1.rpc.call("renepay", {"invstring": inv}) @@ -256,6 +259,7 @@ def test_limits(node_factory): - CLTV delay is too high, - probability of success is too low. """ + # FIXME: check error codes returned by askrene opts = [ {"disable-mpp": None, "fee-base": 0, "fee-per-satoshi": 100}, ] @@ -272,32 +276,14 @@ def test_limits(node_factory): inv = l5.rpc.invoice("any", "any", "description") l3.rpc.call("pay", {"bolt11": inv["bolt11"], "amount_msat": 500000000}) - # FIXME: pylightning should define these! - # PAY_STOPPED_RETRYING = 210 - PAY_ROUTE_TOO_EXPENSIVE = 206 - inv = l6.rpc.invoice("any", "any", "description") # Fee too high. - failmsg = r"Fee exceeds our fee budget" - with pytest.raises(RpcError, match=failmsg) as err: + failmsg = r"Could not find route without excessive cost" + with pytest.raises(RpcError, match=failmsg): l1.rpc.call( "renepay", {"invstring": inv["bolt11"], "amount_msat": 1000000, "maxfee": 1} ) - assert err.value.error["code"] == PAY_ROUTE_TOO_EXPENSIVE - # TODO(eduardo): which error code shall we use here? - - # TODO(eduardo): shall we list attempts in renepay? - # status = l1.rpc.call('renepaystatus', {'invstring':inv['bolt11']})['paystatus'][0]['attempts'] - - failmsg = r"CLTV delay exceeds our CLTV budget" - # Delay too high. - with pytest.raises(RpcError, match=failmsg) as err: - l1.rpc.call( - "renepay", - {"invstring": inv["bolt11"], "amount_msat": 1000000, "maxdelay": 0}, - ) - assert err.value.error["code"] == PAY_ROUTE_TOO_EXPENSIVE inv2 = l6.rpc.invoice("800000sat", "inv2", "description") l1.rpc.call("renepay", {"invstring": inv2["bolt11"]}) @@ -640,6 +626,7 @@ def test_fees(node_factory): assert invoice["amount_received_msat"] == Millisatoshi("150000sat") +@unittest.skip("Not supported by askrene") def test_local_htlcmax0(node_factory): """Testing a simple pay route when local channels have htlcmax=0.""" l1, l2, l3 = node_factory.line_graph(3, wait_for_announce=True) @@ -773,7 +760,8 @@ def test_privatechan(node_factory, bitcoind): assert invoice["amount_received_msat"] >= Millisatoshi("1000sat") -@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "broken for some reason") +# Skipping this test for now, we can make it pass with askrene. +@unittest.skip def test_hardmpp2(node_factory, bitcoind): """Credits to @daywalker90 for this test case.""" opts = {"disable-mpp": None, "fee-base": 0, "fee-per-satoshi": 10} @@ -852,6 +840,8 @@ def test_offers(node_factory): assert response["status"] == "complete" +# FIXME: we skip this until #8129 is merged +@unittest.skip def test_offer_selfpay(node_factory): """We can fetch an pay our own offer""" l1 = node_factory.get_node() From 0b0c122fae66915e7dd136d57347394d8f4a5075 Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 5 Mar 2025 08:45:14 +0100 Subject: [PATCH 21/22] renepay: use the same global layer as xpay Changelog-None Signed-off-by: Lagrang3 --- plugins/renepay/renepayconfig.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/plugins/renepay/renepayconfig.h b/plugins/renepay/renepayconfig.h index 968d82198ea7..2856d114d9a4 100644 --- a/plugins/renepay/renepayconfig.h +++ b/plugins/renepay/renepayconfig.h @@ -2,7 +2,8 @@ #define LIGHTNING_PLUGINS_RENEPAY_RENEPAYCONFIG_H #include "config.h" -#define RENEPAY_LAYER "renepay" +/* Use the same global layer as xpay */ +#define RENEPAY_LAYER "xpay" #define MAX_NUM_ATTEMPTS 10 From 2facae2144caeb8dc0fab6178f5a39a8d18f6eec Mon Sep 17 00:00:00 2001 From: Lagrang3 Date: Wed, 5 Mar 2025 07:41:41 +0100 Subject: [PATCH 22/22] Fix CI tests ... that broke because of layers created by renepay Changelog-None Signed-off-by: Lagrang3 --- tests/autogenerate-rpc-examples.py | 2 +- tests/test_askrene.py | 12 +++++++----- tests/test_misc.py | 12 +++++++----- 3 files changed, 15 insertions(+), 11 deletions(-) diff --git a/tests/autogenerate-rpc-examples.py b/tests/autogenerate-rpc-examples.py index bcd3981c0295..3a53c77edc00 100644 --- a/tests/autogenerate-rpc-examples.py +++ b/tests/autogenerate-rpc-examples.py @@ -2134,8 +2134,8 @@ def list_missing_examples(): rune_l21 = generate_runes_examples(l1, l2, l3) generate_datastore_examples(l2) generate_bookkeeper_examples(l2, l3, c23res2['channel_id']) - offer_l23, inv_req_l1_l22 = generate_offers_renepay_examples(l1, l2, inv_l21, inv_l34) generate_askrene_examples(l1, l2, l3, c12, c23_2) + offer_l23, inv_req_l1_l22 = generate_offers_renepay_examples(l1, l2, inv_l21, inv_l34) generate_wait_examples(l1, l2, bitcoind, executor) address_l22 = generate_utils_examples(l1, l2, l3, l4, l5, l6, c23_2, c34_2, inv_l11, inv_l22, rune_l21, bitcoind) generate_splice_examples(node_factory, bitcoind) diff --git a/tests/test_askrene.py b/tests/test_askrene.py index 7404d4664cc3..ed4610b3870f 100644 --- a/tests/test_askrene.py +++ b/tests/test_askrene.py @@ -121,9 +121,10 @@ def test_reserve(node_factory): def test_layers(node_factory): """Test manipulating information in layers""" - # remove xpay, since it creates a layer! - l1, l2, l3 = node_factory.line_graph(3, wait_for_announce=True, - opts={'disable-plugin': 'cln-xpay'}) + # remove xpay and renepay, since they create a layer! + l1, l2, l3 = node_factory.line_graph( + 3, wait_for_announce=True, opts={"disable-plugin": ["cln-xpay", "cln-renepay"]} + ) assert l2.rpc.askrene_listlayers() == {'layers': []} with pytest.raises(RpcError, match="Unknown layer"): @@ -294,8 +295,9 @@ def test_layers(node_factory): def test_layer_persistence(node_factory): """Test persistence of layers across restart""" - l1, l2 = node_factory.line_graph(2, wait_for_announce=True, - opts={'disable-plugin': 'cln-xpay'}) + l1, l2 = node_factory.line_graph( + 2, wait_for_announce=True, opts={"disable-plugin": ["cln-xpay", "cln-renepay"]} + ) assert l1.rpc.askrene_listlayers() == {'layers': []} with pytest.raises(RpcError, match="Unknown layer"): diff --git a/tests/test_misc.py b/tests/test_misc.py index d21c5cff7014..cc625c8d73d5 100644 --- a/tests/test_misc.py +++ b/tests/test_misc.py @@ -3620,8 +3620,8 @@ def test_datastore_escapeing(node_factory): def test_datastore(node_factory): - # Suppress xpay, which makes a layer - l1 = node_factory.get_node(options={"disable-plugin": "cln-xpay"}) + # Suppress xpay and renepay, which makes a layer + l1 = node_factory.get_node(options={"disable-plugin": ["cln-xpay", "cln-renepay"]}) # Starts empty assert l1.rpc.listdatastore() == {'datastore': []} @@ -3735,8 +3735,8 @@ def test_datastore(node_factory): def test_datastore_keylist(node_factory): - # Suppress xpay, which makes a layer - l1 = node_factory.get_node(options={"disable-plugin": "cln-xpay"}) + # Suppress xpay and renepay, which makes a layer + l1 = node_factory.get_node(options={"disable-plugin": ["cln-xpay", "cln-renepay"]}) # Starts empty assert l1.rpc.listdatastore() == {'datastore': []} @@ -3798,7 +3798,9 @@ def test_datastore_keylist(node_factory): def test_datastoreusage(node_factory): - l1: LightningNode = node_factory.get_node(options={"disable-plugin": "cln-xpay"}) + l1: LightningNode = node_factory.get_node( + options={"disable-plugin": ["cln-xpay", "cln-renepay"]} + ) assert l1.rpc.datastoreusage() == {'datastoreusage': {'key': '[]', 'total_bytes': 0}} data = 'somedatatostoreinthedatastore' # len 29