fix: promisified methods (#398)

* chore: update ws rendezvous dep

test(fix): fix tests with latest ws rendezvous server

* fix: promisification of libp2p methods

test: add tests to verify promisify support until async/await endeavor is complete

* chore: fix linting

test/circuit-relay.browser.js

@@ -43,12 +43,7 @@ describe('circuit relay', () => {
   let peerRelay
 
   before('get peer relay', async () => {
-    peerRelay = await new Promise(resolve => {
-      getPeerRelay((err, peer) => {
-        expect(err).to.not.exist()
-        resolve(peer)
-      })
-    })
+    peerRelay = await getPeerRelay()
   })
 
   before('create the browser nodes', async () => {

test/node.js

@@ -6,6 +6,7 @@ require('./stream-muxing.node')
 require('./peer-discovery.node')
 require('./peer-routing.node')
 require('./ping.node')
+require('./promisify.node')
 require('./pubsub.node')
 require('./content-routing.node')
 require('./circuit-relay.node')

test/promisify.node.js

@@ -0,0 +1,87 @@
+/* eslint-env mocha */
+'use strict'
+
+/**
+ * This test suite is intended to validate compatability of
+ * the promisified api, until libp2p has been fully migrated to
+ * async/await. Once the migration is complete and all tests
+ * are using async/await, this file can be removed.
+ */
+
+const chai = require('chai')
+chai.use(require('dirty-chai'))
+const expect = chai.expect
+const promisify = require('promisify-es6')
+const createNode = promisify(require('./utils/create-node'))
+const { createPeerInfo } = require('./utils/create-node')
+const Node = require('./utils/bundle-nodejs')
+const pull = require('pull-stream')
+const Ping = require('libp2p-ping')
+
+/**
+ * As libp2p is currently promisified, when extending libp2p,
+ * method arguments must be passed to `super` to ensure the
+ * promisify callbacks are properly resolved
+ */
+class AsyncLibp2p extends Node {
+  async start (...args) {
+    await super.start(...args)
+  }
+
+  async stop (...args) {
+    await super.start(...args)
+  }
+}
+
+async function createAsyncNode () {
+  const peerInfo = await promisify(createPeerInfo)()
+  peerInfo.multiaddrs.add('/ip4/0.0.0.0/tcp/0')
+  return new AsyncLibp2p({ peerInfo })
+}
+
+describe('promisified libp2p', () => {
+  let libp2p
+  let otherNode
+  const ECHO_PROTO = '/echo/1.0.0'
+
+  before('Create and Start', async () => {
+    [libp2p, otherNode] = await Promise.all([
+      createNode('/ip4/0.0.0.0/tcp/0'),
+      createAsyncNode()
+    ])
+
+    return [libp2p, otherNode].map(node => {
+      node.handle(ECHO_PROTO, (_, conn) => pull(conn, conn))
+      return node.start()
+    })
+  })
+
+  after('Stop', () => {
+    return [libp2p, otherNode].map(node => node.stop())
+  })
+
+  afterEach('Hang up', () => {
+    return libp2p.hangUp(otherNode.peerInfo)
+  })
+
+  it('dial', async () => {
+    const stream = await libp2p.dial(otherNode.peerInfo)
+    expect(stream).to.not.exist()
+    expect(libp2p._switch.connection.getAll()).to.have.length(1)
+  })
+
+  it('dialFSM', async () => {
+    const connectionFSM = await libp2p.dialFSM(otherNode.peerInfo, ECHO_PROTO)
+    expect(connectionFSM).to.exist()
+  })
+
+  it('dialProtocol', async () => {
+    const stream = await libp2p.dialProtocol(otherNode.peerInfo, ECHO_PROTO)
+    expect(stream).to.exist()
+  })
+
+  it('ping', async () => {
+    const ping = await libp2p.ping(otherNode.peerInfo)
+    expect(ping).to.be.an.instanceOf(Ping)
+  })
+})

test/transports.browser.js

@@ -25,14 +25,11 @@ describe('transports', () => {
     let peerBMultiaddr
     let nodeA
 
-    before((done) => {
-      getPeerRelay((err, peerInfo) => {
-        expect(err).to.not.exist()
-        peerB = new PeerInfo(peerInfo.id)
-        peerBMultiaddr = `/ip4/127.0.0.1/tcp/9200/ws/p2p/${peerInfo.id.toB58String()}`
-        peerB.multiaddrs.add(peerBMultiaddr)
-        done()
-      })
+    before(async () => {
+      const peerInfo = await getPeerRelay()
+      peerB = new PeerInfo(peerInfo.id)
+      peerBMultiaddr = `/ip4/127.0.0.1/tcp/9200/ws/p2p/${peerInfo.id.toB58String()}`
+      peerB.multiaddrs.add(peerBMultiaddr)
     })
 
     after((done) => nodeA.stop(done))

test/transports.node.js

@@ -17,7 +17,9 @@ const createNode = require('./utils/create-node.js')
 const tryEcho = require('./utils/try-echo')
 const echo = require('./utils/echo')
 
-const { WRTC_RENDEZVOUS_MULTIADDR } = require('./utils/constants')
+const {
+  WRTC_RENDEZVOUS_MULTIADDR
+} = require('./utils/constants')
 
 describe('transports', () => {
   describe('TCP only', () => {
@@ -576,25 +578,24 @@ describe('transports', () => {
     let nodeTCP
     let nodeWS
     let nodeWebSocketStar
-
     let ss
+    const PORT = 24642
+
+    before(async () => {
+      ss = await rendezvous.start({
+        port: PORT
+      })
+    })
 
     before((done) => {
       parallel([
-        (cb) => {
-          rendezvous.start({ port: 24642 }, (err, server) => {
-            expect(err).to.not.exist()
-            ss = server
-            cb()
-          })
-        },
         (cb) => {
           const wstar = new WSStar()
 
           createNode([
             '/ip4/0.0.0.0/tcp/0',
             '/ip4/127.0.0.1/tcp/25011/ws',
-            '/ip4/127.0.0.1/tcp/24642/ws/p2p-websocket-star'
+            `/ip4/127.0.0.1/tcp/${PORT}/ws/p2p-websocket-star`
           ], {
             modules: {
               transport: [
@@ -603,13 +604,6 @@ describe('transports', () => {
                 wstar
               ],
               peerDiscovery: [wstar.discovery]
-            },
-            config: {
-              peerDiscovery: {
-                [wstar.discovery.tag]: {
-                  enabled: true
-                }
-              }
             }
           }, (err, node) => {
             expect(err).to.not.exist()
@@ -640,18 +634,11 @@ describe('transports', () => {
           const wstar = new WSStar({})
 
           createNode([
-            '/ip4/127.0.0.1/tcp/24642/ws/p2p-websocket-star'
+            `/ip4/127.0.0.1/tcp/${PORT}/ws/p2p-websocket-star`
           ], {
             modules: {
               transport: [wstar],
               peerDiscovery: [wstar.discovery]
-            },
-            config: {
-              peerDiscovery: {
-                [wstar.discovery.tag]: {
-                  enabled: true
-                }
-              }
             }
           }, (err, node) => {
             expect(err).to.not.exist()
@@ -670,7 +657,9 @@ describe('transports', () => {
         (cb) => nodeTCP.stop(cb),
         (cb) => nodeWS.stop(cb),
         (cb) => nodeWebSocketStar.stop(cb),
-        (cb) => ss.stop(cb)
+        async () => {
+          await ss.stop()
+        }
       ], done)
     })
 

test/utils/constants.js

@@ -5,6 +5,7 @@ const PeerInfo = require('peer-info')
 const nextTick = require('async/nextTick')
 const peerJSON = require('../fixtures/test-peer')
 const multiaddr = require('multiaddr')
+const promisify = require('promisify-es6')
 
 let peerRelay = null
 
@@ -20,7 +21,7 @@ let peerRelay = null
  * @param {function(error, PeerInfo)} callback
  * @returns {void}
  */
-module.exports.getPeerRelay = (callback) => {
+module.exports.getPeerRelay = promisify((callback) => {
   if (peerRelay) return nextTick(callback, null, peerRelay)
 
   PeerId.createFromJSON(peerJSON, (err, peerId) => {
@@ -34,7 +35,7 @@ module.exports.getPeerRelay = (callback) => {
 
     callback(null, peerRelay)
   })
-}
+})
 
-module.exports.WS_RENDEZVOUS_MULTIADDR = multiaddr('/ip4/127.0.0.1/tcp/14444/wss')
-module.exports.WRTC_RENDEZVOUS_MULTIADDR = multiaddr('/ip4/127.0.0.1/tcp/15555/wss')
+module.exports.WS_RENDEZVOUS_MULTIADDR = multiaddr('/ip4/127.0.0.1/tcp/14444/ws')
+module.exports.WRTC_RENDEZVOUS_MULTIADDR = multiaddr('/ip4/127.0.0.1/tcp/15555/ws')