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pubsub.js
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pubsub.js
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/* eslint max-nested-callbacks: ["error", 6] */
/* eslint-env mocha */
import pRetry from 'p-retry'
import { expect } from 'aegir/chai'
import { daemonFactory } from './utils/daemon-factory.js'
import { fromString as uint8ArrayFromString } from 'uint8arrays/from-string'
import { equals as uint8ArrayEquals } from 'uint8arrays/equals'
import { isPeerId } from '@libp2p/interface-peer-id'
import pTimeout from 'p-timeout'
import delay from 'delay'
/**
* @typedef {import('ipfsd-ctl').Controller} Controller
* @typedef {import('ipfsd-ctl').Factory} Factory
* @typedef {import('ipfsd-ctl').ControllerOptions} ControllerOptions
*/
const retryOptions = {
retries: 5
}
/**
* @param {string} topic
* @param {Controller["peer"]} peer
* @param {Controller} daemon
*/
const waitForTopicPeer = (topic, peer, daemon) => {
return pRetry(async () => {
const peers = await daemon.api.pubsub.peers(topic)
if (!peers.map(p => p.toString()).includes(peer.id.toString())) {
throw new Error(`Could not find peer ${peer.id}`)
}
}, retryOptions)
}
/**
* @type {ControllerOptions}
*/
const daemonOptions = {
test: true,
args: ['--enable-pubsub-experiment']
}
const timeout = 20e3
describe('pubsub', function () {
this.timeout(60e3)
/** @type {Record<string, ((fac: Factory) => Promise<Controller>)[]>} */
const tests = {
'publish from Go, subscribe on Go': [(factory) => factory.spawn({ ...daemonOptions, type: 'go' }), (factory) => factory.spawn({ ...daemonOptions, type: 'go' })],
'publish from JS, subscribe on JS': [(factory) => factory.spawn({ type: 'js' }), (factory) => factory.spawn({ type: 'js' })],
'publish from JS, subscribe on Go': [(factory) => factory.spawn({ type: 'js' }), (factory) => factory.spawn({ ...daemonOptions, type: 'go' })],
'publish from Go, subscribe on JS': [(factory) => factory.spawn({ ...daemonOptions, type: 'go' }), (factory) => factory.spawn({ type: 'js' })]
}
Object.keys(tests).forEach((name) => {
describe(name, function () {
/** @type {Controller} */
let daemon1
/** @type {Controller} */
let daemon2
/** @type {Factory} */
let factory
before(async () => {
factory = await daemonFactory()
})
after(() => factory.clean())
before('spawn nodes', async function () {
[daemon1, daemon2] = await Promise.all(tests[name].map(fn => fn(factory)))
})
before('connect', async function () {
await daemon1.api.swarm.connect(daemon2.peer.addresses[0])
await daemon2.api.swarm.connect(daemon1.peer.addresses[0])
const peers = await Promise.all([
daemon1.api.swarm.peers(),
daemon2.api.swarm.peers()
])
expect(peers[0].map((p) => p.peer.toString())).to.include(daemon2.peer.id.toString())
expect(peers[1].map((p) => p.peer.toString())).to.include(daemon1.peer.id.toString())
})
after(() => factory.clean())
it('should exchange ascii data', function () {
const data = uint8ArrayFromString('hello world')
const topic = 'pubsub-ascii'
/** @type {() => Promise<void>} */
const subscriber = () => new Promise((resolve, reject) => {
daemon2.api.pubsub.subscribe(topic, (msg) => {
try {
if (msg.type !== 'signed') {
throw new Error('Message was unsigned')
}
expect(uint8ArrayEquals(data, msg.data)).to.be.true()
expect(msg).to.have.property('sequenceNumber')
expect(msg.sequenceNumber).to.be.a('bigint')
expect(msg).to.have.property('topic', topic)
expect(isPeerId(msg.from)).to.be.true()
expect(msg.from.toString()).to.equal(daemon1.peer.id.toString())
resolve()
} catch (err) {
reject(err)
}
})
})
const publisher = async () => {
await waitForTopicPeer(topic, daemon2.peer, daemon1)
await delay(1000)
await daemon1.api.pubsub.publish(topic, data)
}
return Promise.all([
pTimeout(subscriber(), {
milliseconds: timeout,
message: 'subscriber timed out'
}),
pTimeout(publisher(), {
milliseconds: timeout,
message: 'publisher timed out'
})
])
})
it('should exchange non ascii data', function () {
const data = uint8ArrayFromString('你好世界 zażółć gęślą jaźń')
const topic = 'pubsub-non-ascii'
/** @type {() => Promise<void>} */
const subscriber = () => new Promise((resolve, reject) => {
daemon2.api.pubsub.subscribe(topic, (msg) => {
try {
if (msg.type !== 'signed') {
throw new Error('Message was unsigned')
}
expect(uint8ArrayEquals(data, msg.data)).to.be.true()
expect(msg).to.have.property('sequenceNumber')
expect(msg.sequenceNumber).to.be.a('bigint')
expect(msg).to.have.property('topic', topic)
expect(isPeerId(msg.from)).to.be.true()
expect(msg.from.toString()).to.equal(daemon1.peer.id.toString())
resolve()
} catch (err) {
reject(err)
}
})
})
const publisher = async () => {
await waitForTopicPeer(topic, daemon2.peer, daemon1)
await delay(1000)
await daemon1.api.pubsub.publish(topic, data)
}
return Promise.all([
pTimeout(subscriber(), {
milliseconds: timeout,
message: 'subscriber timed out'
}),
pTimeout(publisher(), {
milliseconds: timeout,
message: 'publisher timed out'
})
])
})
it('should exchange binary data', function () {
const data = uint8ArrayFromString('a36161636179656162830103056164a16466666666f400010203040506070809', 'base16')
const topic = 'pubsub-binary'
/** @type {() => Promise<void>} */
const subscriber = () => new Promise((resolve, reject) => {
daemon2.api.pubsub.subscribe(topic, (msg) => {
try {
if (msg.type !== 'signed') {
throw new Error('Message was unsigned')
}
expect(uint8ArrayEquals(data, msg.data)).to.be.true()
expect(msg).to.have.property('sequenceNumber')
expect(msg.sequenceNumber).to.be.a('bigint')
expect(msg).to.have.property('topic', topic)
expect(isPeerId(msg.from)).to.be.true()
expect(msg.from.toString()).to.equal(daemon1.peer.id.toString())
resolve()
} catch (err) {
reject(err)
}
})
})
const publisher = async () => {
await waitForTopicPeer(topic, daemon2.peer, daemon1)
await delay(1000)
await daemon1.api.pubsub.publish(topic, data)
}
return Promise.all([
pTimeout(subscriber(), {
milliseconds: timeout,
message: 'subscriber timed out'
}),
pTimeout(publisher(), {
milliseconds: timeout,
message: 'publisher timed out'
})
])
})
it('should exchange data over a topic with unicode and newlines', function () {
const data = uint8ArrayFromString('你好世界\nzażółć\r\ngęślą\njaźń')
const topic = 'pubsub\n你好世界\r\njaźń'
/** @type {() => Promise<void>} */
const subscriber = () => new Promise((resolve, reject) => {
daemon2.api.pubsub.subscribe(topic, (msg) => {
try {
if (msg.type !== 'signed') {
throw new Error('Message was unsigned')
}
expect(uint8ArrayEquals(data, msg.data)).to.be.true()
expect(msg).to.have.property('sequenceNumber')
expect(msg.sequenceNumber).to.be.a('bigint')
expect(msg).to.have.property('topic', topic)
expect(isPeerId(msg.from)).to.be.true()
expect(msg.from.toString()).to.equal(daemon1.peer.id.toString())
resolve()
} catch (err) {
reject(err)
}
})
})
const publisher = async () => {
await waitForTopicPeer(topic, daemon2.peer, daemon1)
await delay(1000)
await daemon1.api.pubsub.publish(topic, data)
}
return Promise.all([
pTimeout(subscriber(), {
milliseconds: timeout,
message: 'subscriber timed out'
}),
pTimeout(publisher(), {
milliseconds: timeout,
message: 'publisher timed out'
})
])
})
})
})
})