Merge pull request #5633 from chu11/issue5577_job_info_lookup_decode_update

job-info: add JSON_DECODE & CURRENT flags, deprecate job-info.update-lookup

Author: mergify[bot]

src/cmd/flux-job.c

@@ -3398,7 +3398,7 @@ int cmd_info (optparse_t *p, int argc, char **argv)
                                  "keys", "J",
                                  "flags", 0))
             || flux_rpc_get_unpack (f, "{s:s}", "J", &val) < 0)
-            log_msg_exit ("%s", future_strerror (f, errno ));
+            log_msg_exit ("%s", future_strerror (f, errno));
         if (!(new_val = flux_unwrap_string (val, false, NULL, &error)))
             log_msg_exit ("Failed to unwrap J to get jobspec: %s", error.text);
         val = new_val;
@@ -3423,27 +3423,23 @@ int cmd_info (optparse_t *p, int argc, char **argv)
                                     "{s:s s:s}",
                                     "jobspec", &jobspec,
                                     "eventlog", &eventlog) < 0)
-            log_msg_exit ("%s", future_strerror (f, errno ));
+            log_msg_exit ("%s", future_strerror (f, errno));
         val = new_val = reconstruct_current_jobspec (jobspec, eventlog);
     }
     /* The current (non --base) R is obtained through the
-     * job-info.update-lookup RPC, not the normal job-info.lookup.
+     * job-info.lookup RPC w/ the CURRENT flag.
      */
     else if (!optparse_hasopt (p, "base") && streq (key, "R")) {
-        json_t *o;
         if (!(f = flux_rpc_pack (h,
-                                 "job-info.update-lookup",
+                                 "job-info.lookup",
                                  FLUX_NODEID_ANY,
                                  0,
-                                 "{s:I s:s s:i}",
+                                 "{s:I s:[s] s:i}",
                                  "id", id,
-                                 "key", key,
-                                 "flags", 0))
-            || flux_rpc_get_unpack (f, "{s:o}", key, &o) < 0)
-            log_msg_exit ("%s", future_strerror (f, errno ));
-        if (!(new_val = json_dumps (o, JSON_COMPACT)))
-            log_msg_exit ("error encoding R object");
-        val = new_val;
+                                 "keys", key,
+                                 "flags", FLUX_JOB_LOOKUP_CURRENT))
+            || flux_rpc_get_unpack (f, "{s:s}", key, &val) < 0)
+            log_msg_exit ("%s", future_strerror (f, errno));
     }
     /* All other keys are obtained this way.
      */
@@ -3457,7 +3453,7 @@ int cmd_info (optparse_t *p, int argc, char **argv)
                                  "keys", key,
                                  "flags", 0))
             || flux_rpc_get_unpack (f, "{s:s}", key, &val) < 0)
-            log_msg_exit ("%s", future_strerror (f, errno ));
+            log_msg_exit ("%s", future_strerror (f, errno));
     }
 
     printf ("%s\n", val);

src/common/libjob/job.h

@@ -30,6 +30,18 @@ enum job_event_watch_flags {
     FLUX_JOB_EVENT_WATCH_WAITCREATE = 1, // wait for path to exist
 };
 
+enum job_lookup_flags {
+    /* return special fields as decoded JSON objects instead of strings
+     * - currently works for jobspec and R
+     */
+    FLUX_JOB_LOOKUP_JSON_DECODE = 1,
+    /* get current value of special fields by applying eventlog
+     * updates for those fields
+     * - currently works for R
+     */
+    FLUX_JOB_LOOKUP_CURRENT = 2,
+};
+
 enum job_urgency {
     FLUX_JOB_URGENCY_MIN = 0,
     FLUX_JOB_URGENCY_HOLD = FLUX_JOB_URGENCY_MIN,

src/modules/job-info/job-info.c

@@ -38,7 +38,7 @@ static void stats_cb (flux_t *h, flux_msg_handler_t *mh,
     int lookups = zlist_size (ctx->lookups);
     int watchers = zlist_size (ctx->watchers);
     int guest_watchers = zlist_size (ctx->guest_watchers);
-    int update_lookups = zlist_size (ctx->update_lookups);
+    int update_lookups = 0;     /* no longer supported */
     int update_watchers = update_watch_count (ctx);
     if (flux_respond_pack (h, msg, "{s:i s:i s:i s:i s:i}",
                            "lookups", lookups,
@@ -117,8 +117,6 @@ static void info_ctx_destroy (struct info_ctx *ctx)
             guest_watch_cleanup (ctx);
             zlist_destroy (&ctx->guest_watchers);
         }
-        if (ctx->update_lookups)
-            zlist_destroy (&ctx->update_lookups);
         if (ctx->update_watchers) {
             update_watch_cleanup (ctx);
             zlist_destroy (&ctx->update_watchers);
@@ -147,8 +145,6 @@ static struct info_ctx *info_ctx_create (flux_t *h)
         goto error;
     if (!(ctx->guest_watchers = zlist_new ()))
         goto error;
-    if (!(ctx->update_lookups = zlist_new ()))
-        goto error;
     if (!(ctx->update_watchers = zlist_new ()))
         goto error;
     /* no destructor for index_uw, destruction handled on

src/modules/job-info/job-info.h

@@ -26,7 +26,6 @@ struct info_ctx {
     zlist_t *lookups;
     zlist_t *watchers;
     zlist_t *guest_watchers;
-    zlist_t *update_lookups;
     zlist_t *update_watchers;
     zhashx_t *index_uw;        /* update_watchers lookup */
 };