overleaf/services/real-time/test/acceptance/js/EarlyDisconnect.js

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/* eslint-disable
no-return-assign,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS101: Remove unnecessary use of Array.from
* DS102: Remove unnecessary code created because of implicit returns
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
const async = require('async')
const { expect } = require('chai')
const RealTimeClient = require('./helpers/RealTimeClient')
const MockDocUpdaterServer = require('./helpers/MockDocUpdaterServer')
const MockWebServer = require('./helpers/MockWebServer')
const FixturesManager = require('./helpers/FixturesManager')
const settings = require('@overleaf/settings')
const redis = require('@overleaf/redis-wrapper')
const rclient = redis.createClient(settings.redis.pubsub)
const rclientRT = redis.createClient(settings.redis.realtime)
const KeysRT = settings.redis.realtime.key_schema
describe('EarlyDisconnect', function () {
before(function (done) {
return MockDocUpdaterServer.run(done)
})
describe('when the client disconnects before joinProject completes', function () {
before(function () {
// slow down web-api requests to force the race condition
let joinProject
this.actualWebAPIjoinProject = joinProject = MockWebServer.joinProject
return (MockWebServer.joinProject = (projectId, userId, cb) =>
setTimeout(() => joinProject(projectId, userId, cb), 300))
})
after(function () {
return (MockWebServer.joinProject = this.actualWebAPIjoinProject)
})
beforeEach(function (done) {
return async.series(
[
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cb => {
return FixturesManager.setUpProject(
{
privilegeLevel: 'owner',
project: {
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name: 'Test Project',
},
},
(e, { project_id: projectId, user_id: userId }) => {
this.project_id = projectId
this.user_id = userId
return cb()
}
)
},
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cb => {
this.clientA = RealTimeClient.connect()
return this.clientA.on('connectionAccepted', cb)
},
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cb => {
this.clientA.emit(
'joinProject',
{ project_id: this.project_id },
() => {}
)
// disconnect before joinProject completes
this.clientA.on('disconnect', () => cb())
return this.clientA.disconnect()
},
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cb => {
// wait for joinDoc and subscribe
return setTimeout(cb, 500)
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},
],
done
)
})
// we can force the race condition, there is no need to repeat too often
return Array.from(Array.from({ length: 5 }).map((_, i) => i + 1)).map(
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attempt =>
it(`should not subscribe to the pub/sub channel anymore (race ${attempt})`, function (done) {
rclient.pubsub('CHANNELS', (err, resp) => {
if (err) {
return done(err)
}
expect(resp).to.not.include(`editor-events:${this.project_id}`)
return done()
})
return null
})
)
})
describe('when the client disconnects before joinDoc completes', function () {
beforeEach(function (done) {
return async.series(
[
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cb => {
return FixturesManager.setUpProject(
{
privilegeLevel: 'owner',
project: {
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name: 'Test Project',
},
},
(e, { project_id: projectId, user_id: userId }) => {
this.project_id = projectId
this.user_id = userId
return cb()
}
)
},
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cb => {
this.clientA = RealTimeClient.connect()
return this.clientA.on('connectionAccepted', cb)
},
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cb => {
return this.clientA.emit(
'joinProject',
{ project_id: this.project_id },
(error, project, privilegeLevel, protocolVersion) => {
this.project = project
this.privilegeLevel = privilegeLevel
this.protocolVersion = protocolVersion
return cb(error)
}
)
},
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cb => {
return FixturesManager.setUpDoc(
this.project_id,
{ lines: this.lines, version: this.version, ops: this.ops },
(e, { doc_id: docId }) => {
this.doc_id = docId
return cb(e)
}
)
},
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cb => {
this.clientA.emit('joinDoc', this.doc_id, () => {})
// disconnect before joinDoc completes
this.clientA.on('disconnect', () => cb())
return this.clientA.disconnect()
},
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cb => {
// wait for subscribe and unsubscribe
return setTimeout(cb, 100)
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},
],
done
)
})
// we can not force the race condition, so we have to try many times
return Array.from(Array.from({ length: 20 }).map((_, i) => i + 1)).map(
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attempt =>
it(`should not subscribe to the pub/sub channels anymore (race ${attempt})`, function (done) {
rclient.pubsub('CHANNELS', (err, resp) => {
if (err) {
return done(err)
}
expect(resp).to.not.include(`editor-events:${this.project_id}`)
return rclient.pubsub('CHANNELS', (err, resp) => {
if (err) {
return done(err)
}
expect(resp).to.not.include(`applied-ops:${this.doc_id}`)
return done()
})
})
return null
})
)
})
return describe('when the client disconnects before clientTracking.updatePosition starts', function () {
beforeEach(function (done) {
return async.series(
[
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cb => {
return FixturesManager.setUpProject(
{
privilegeLevel: 'owner',
project: {
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name: 'Test Project',
},
},
(e, { project_id: projectId, user_id: userId }) => {
this.project_id = projectId
this.user_id = userId
return cb()
}
)
},
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cb => {
this.clientA = RealTimeClient.connect()
return this.clientA.on('connectionAccepted', cb)
},
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cb => {
return this.clientA.emit(
'joinProject',
{ project_id: this.project_id },
(error, project, privilegeLevel, protocolVersion) => {
this.project = project
this.privilegeLevel = privilegeLevel
this.protocolVersion = protocolVersion
return cb(error)
}
)
},
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cb => {
return FixturesManager.setUpDoc(
this.project_id,
{ lines: this.lines, version: this.version, ops: this.ops },
(e, { doc_id: docId }) => {
this.doc_id = docId
return cb(e)
}
)
},
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cb => {
return this.clientA.emit('joinDoc', this.doc_id, cb)
},
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cb => {
this.clientA.emit(
'clientTracking.updatePosition',
{
row: 42,
column: 36,
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doc_id: this.doc_id,
},
() => {}
)
// disconnect before updateClientPosition completes
this.clientA.on('disconnect', () => cb())
return this.clientA.disconnect()
},
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cb => {
// wait for updateClientPosition
return setTimeout(cb, 100)
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},
],
done
)
})
// we can not force the race condition, so we have to try many times
return Array.from(Array.from({ length: 20 }).map((_, i) => i + 1)).map(
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attempt =>
it(`should not show the client as connected (race ${attempt})`, function (done) {
rclientRT.smembers(
KeysRT.clientsInProject({ project_id: this.project_id }),
(err, results) => {
if (err) {
return done(err)
}
expect(results).to.deep.equal([])
return done()
}
)
return null
})
)
})
})