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vasco-santosAlan Shaw
vasco-santos
authored and
Alan Shaw
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refactor: dht api (#890)
BREAKING CHANGE: DHT API methods renamed and return types changed * `ipfs.dht.findprovs` renamed to `ipfs.dht.findProvs` and returns an array of [PeerInfo](https://github.com/libp2p/js-peer-info) * `ipfs.dht.findpeer` renamed to `ipfs.dht.findPeer` and returns a [PeerInfo](https://github.com/libp2p/js-peer-info) * `ipfs.dht.query` now returns an array of [PeerId](https://github.com/libp2p/js-peer-id) * [More info](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md)
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‎README.md‎

Lines changed: 2 additions & 2 deletions
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@@ -259,8 +259,8 @@ const ipfs = ipfsClient({
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- [`ipfs.bitswap.unwant(cid)`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/BITSWAP.md#bitswapunwant)
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- [dht](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md)
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- [`ipfs.dht.findpeer(peerId, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtfindpeer)
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- [`ipfs.dht.findprovs(hash, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtfindprovs)
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- [`ipfs.dht.findPeer(peerId, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtfindpeer)
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- [`ipfs.dht.findProvs(hash, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtfindprovs)
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- [`ipfs.dht.get(key, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtget)
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- [`ipfs.dht.provide(cid, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtprovide)
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- [`ipfs.dht.put(key, value, [callback])`](https://github.com/ipfs/interface-ipfs-core/blob/master/SPEC/DHT.md#dhtput)

‎package.json‎

Lines changed: 6 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -36,6 +36,7 @@
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"debug": "^4.1.0",
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"detect-node": "^2.0.4",
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"end-of-stream": "^1.4.1",
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"err-code": "^1.1.2",
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"flatmap": "0.0.3",
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"glob": "^7.1.3",
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"ipfs-block": "~0.8.0",
@@ -47,14 +48,14 @@
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"is-stream": "^1.1.0",
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"libp2p-crypto": "~0.14.0",
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"lodash": "^4.17.11",
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"lru-cache": "^4.1.3",
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"multiaddr": "^5.0.2",
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"lru-cache": "^5.1.1",
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"multiaddr": "^6.0.0",
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"multibase": "~0.6.0",
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"multihashes": "~0.4.14",
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"ndjson": "^1.5.0",
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"once": "^1.4.0",
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"peer-id": "~0.12.0",
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"peer-info": "~0.14.1",
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"peer-info": "~0.15.0",
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"promisify-es6": "^1.0.3",
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"pull-defer": "~0.2.3",
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"pull-pushable": "^2.2.0",
@@ -66,7 +67,7 @@
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"stream-to-pull-stream": "^1.7.2",
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"streamifier": "~0.1.1",
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"tar-stream": "^1.6.2",
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"through2": "^2.0.3"
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"through2": "^3.0.0"
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},
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"engines": {
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"node": ">=8.0.0",
@@ -85,7 +86,7 @@
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"eslint-plugin-react": "^7.11.1",
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"go-ipfs-dep": "~0.4.18",
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"gulp": "^3.9.1",
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"interface-ipfs-core": "~0.90.0",
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"interface-ipfs-core": "~0.91.0",
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"ipfsd-ctl": "~0.40.0",
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"nock": "^10.0.2",
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"pull-stream": "^3.6.9",

‎src/dht/findpeer.js‎

Lines changed: 39 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,12 @@
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'use strict'
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const promisify = require('promisify-es6')
4-
const streamToValue = require('../utils/stream-to-value')
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const streamToValueWithTransformer = require('../utils/stream-to-value-with-transformer')
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const multiaddr = require('multiaddr')
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const PeerId = require('peer-id')
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const PeerInfo = require('peer-info')
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const errcode = require('err-code')
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module.exports = (send) => {
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return promisify((peerId, opts, callback) => {
@@ -17,10 +22,41 @@ module.exports = (send) => {
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opts = {}
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}
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20-
send.andTransform({
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const handleResult = (res, callback) => {
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// Inconsistent return values in the browser
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if (Array.isArray(res)) {
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res = res[0]
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}
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// Type 2 keys
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if (res.Type !== 2) {
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const errMsg = `key was not found (type 2)`
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return callback(errcode(new Error(errMsg), 'ERR_KEY_TYPE_2_NOT_FOUND'))
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}
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const responseReceived = res.Responses[0]
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const peerInfo = new PeerInfo(PeerId.createFromB58String(responseReceived.ID))
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responseReceived.Addrs.forEach((addr) => {
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const ma = multiaddr(addr)
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peerInfo.multiaddrs.add(ma)
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})
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callback(null, peerInfo)
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}
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send({
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path: 'dht/findpeer',
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args: peerId,
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qs: opts
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}, streamToValue, callback)
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}, (err, result) => {
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if (err) {
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return callback(err)
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}
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streamToValueWithTransformer(result, handleResult, callback)
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})
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})
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}

‎src/dht/findprovs.js‎

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,12 @@
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'use strict'
22

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const promisify = require('promisify-es6')
4-
const streamToValue = require('../utils/stream-to-value')
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const streamToValueWithTransformer = require('../utils/stream-to-value-with-transformer')
5+
6+
const multiaddr = require('multiaddr')
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const PeerId = require('peer-id')
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const PeerInfo = require('peer-info')
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const errcode = require('err-code')
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module.exports = (send) => {
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return promisify((cid, opts, callback) => {
@@ -17,10 +22,44 @@ module.exports = (send) => {
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opts = {}
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}
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20-
send.andTransform({
25+
const handleResult = (res, callback) => {
26+
// Inconsistent return values in the browser vs node
27+
if (Array.isArray(res)) {
28+
res = res[0]
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}
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31+
// Type 4 keys
32+
if (res.Type !== 4) {
33+
const errMsg = `key was not found (type 4)`
34+
35+
return callback(errcode(new Error(errMsg), 'ERR_KEY_TYPE_4_NOT_FOUND'))
36+
}
37+
38+
const responses = res.Responses.map((r) => {
39+
const peerInfo = new PeerInfo(PeerId.createFromB58String(r.ID))
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41+
r.Addrs.forEach((addr) => {
42+
const ma = multiaddr(addr)
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peerInfo.multiaddrs.add(ma)
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})
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return peerInfo
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})
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50+
callback(null, responses)
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}
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send({
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path: 'dht/findprovs',
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args: cid,
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qs: opts
24-
}, streamToValue, callback)
57+
}, (err, result) => {
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if (err) {
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return callback(err)
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}
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streamToValueWithTransformer(result, handleResult, callback)
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})
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})
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}

‎src/dht/index.js‎

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Original file line numberDiff line numberDiff line change
@@ -8,8 +8,8 @@ module.exports = (arg) => {
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return {
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get: require('./get')(send),
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put: require('./put')(send),
11-
findprovs: require('./findprovs')(send),
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findpeer: require('./findpeer')(send),
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findProvs: require('./findprovs')(send),
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findPeer: require('./findpeer')(send),
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provide: require('./provide')(send),
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// find closest peerId to given peerId
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query: require('./query')(send)

‎src/dht/query.js‎

Lines changed: 18 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,10 @@
11
'use strict'
22

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const promisify = require('promisify-es6')
4-
const streamToValue = require('../utils/stream-to-value')
4+
const streamToValueWithTransformer = require('../utils/stream-to-value-with-transformer')
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6+
const PeerId = require('peer-id')
7+
const PeerInfo = require('peer-info')
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module.exports = (send) => {
710
return promisify((peerId, opts, callback) => {
@@ -17,10 +20,22 @@ module.exports = (send) => {
1720
opts = {}
1821
}
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20-
send.andTransform({
23+
const handleResult = (res, callback) => {
24+
const peerIds = res.map((r) => (new PeerInfo(PeerId.createFromB58String(r.ID))))
25+
26+
callback(null, peerIds)
27+
}
28+
29+
send({
2130
path: 'dht/query',
2231
args: peerId,
2332
qs: opts
24-
}, streamToValue, callback)
33+
}, (err, result) => {
34+
if (err) {
35+
return callback(err)
36+
}
37+
38+
streamToValueWithTransformer(result, handleResult, callback)
39+
})
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})
2641
}

‎src/object/data.js‎

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@@ -8,7 +8,7 @@ const lruOptions = {
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max: 128
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}
1010

11-
const cache = LRU(lruOptions)
11+
const cache = new LRU(lruOptions)
1212

1313
module.exports = (send) => {
1414
return promisify((cid, options, callback) => {

‎src/object/get.js‎

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@@ -11,7 +11,7 @@ const lruOptions = {
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max: 128
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}
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14-
const cache = LRU(lruOptions)
14+
const cache = new LRU(lruOptions)
1515

1616
module.exports = (send) => {
1717
return promisify((cid, options, callback) => {

‎src/object/links.js‎

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@@ -9,7 +9,7 @@ const lruOptions = {
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max: 128
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}
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12-
const cache = LRU(lruOptions)
12+
const cache = new LRU(lruOptions)
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1414
module.exports = (send) => {
1515
return promisify((multihash, options, callback) => {

‎src/utils/stream-to-value-with-transformer.js‎

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@@ -0,0 +1,18 @@
1+
'use strict'
2+
3+
const streamToValue = require('./stream-to-value')
4+
5+
function streamToValueWithTransformer (response, transformer, callback) {
6+
if (typeof response.pipe === 'function') {
7+
streamToValue(response, (err, res) => {
8+
if (err) {
9+
return callback(err)
10+
}
11+
transformer(res, callback)
12+
})
13+
} else {
14+
transformer(response, callback)
15+
}
16+
}
17+
18+
module.exports = streamToValueWithTransformer

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