overleaf/services/document-updater/test/unit/js/DispatchManager/DispatchManagerTests.js

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/* eslint-disable
no-return-assign,
no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS102: Remove unnecessary code created because of implicit returns
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
const sinon = require('sinon')
const modulePath = '../../../../app/js/DispatchManager.js'
const SandboxedModule = require('sandboxed-module')
const Errors = require('../../../../app/js/Errors.js')
describe('DispatchManager', function () {
beforeEach(function () {
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let Timer
this.timeout(3000)
this.DispatchManager = SandboxedModule.require(modulePath, {
requires: {
'./UpdateManager': (this.UpdateManager = {}),
'@overleaf/settings': (this.settings = {
redis: {
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documentupdater: {},
},
}),
'@overleaf/redis-wrapper': (this.redis = {}),
'./RateLimitManager': {},
'./Errors': Errors,
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'./Metrics': (this.Metrics = {
Timer: (Timer = (function () {
Timer = class Timer {
static initClass() {
this.prototype.done = sinon.stub()
}
}
Timer.initClass()
return Timer
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})()),
}),
},
})
this.callback = sinon.stub()
return (this.RateLimiter = {
run(task, cb) {
return task(cb)
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},
})
}) // run task without rate limit
return describe('each worker', function () {
beforeEach(function () {
this.client = { auth: sinon.stub() }
this.redis.createClient = sinon.stub().returns(this.client)
return (this.worker = this.DispatchManager.createDispatcher(
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this.RateLimiter,
0
))
})
it('should create a new redis client', function () {
return this.redis.createClient.called.should.equal(true)
})
describe('_waitForUpdateThenDispatchWorker', function () {
beforeEach(function () {
this.project_id = 'project-id-123'
this.doc_id = 'doc-id-123'
this.doc_key = `${this.project_id}:${this.doc_id}`
return (this.client.blpop = sinon
.stub()
.callsArgWith(2, null, ['pending-updates-list', this.doc_key]))
})
describe('in the normal case', function () {
beforeEach(function () {
this.UpdateManager.processOutstandingUpdatesWithLock = sinon
.stub()
.callsArg(2)
return this.worker._waitForUpdateThenDispatchWorker(this.callback)
})
it('should call redis with BLPOP', function () {
return this.client.blpop
.calledWith('pending-updates-list', 0)
.should.equal(true)
})
it('should call processOutstandingUpdatesWithLock', function () {
return this.UpdateManager.processOutstandingUpdatesWithLock
.calledWith(this.project_id, this.doc_id)
.should.equal(true)
})
it('should not log any errors', function () {
this.logger.error.called.should.equal(false)
return this.logger.warn.called.should.equal(false)
})
return it('should call the callback', function () {
return this.callback.called.should.equal(true)
})
})
describe('with an error', function () {
beforeEach(function () {
this.UpdateManager.processOutstandingUpdatesWithLock = sinon
.stub()
.callsArgWith(2, new Error('a generic error'))
return this.worker._waitForUpdateThenDispatchWorker(this.callback)
})
it('should log an error', function () {
return this.logger.error.called.should.equal(true)
})
return it('should call the callback', function () {
return this.callback.called.should.equal(true)
})
})
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describe("with a 'Delete component' error", function () {
beforeEach(function () {
this.UpdateManager.processOutstandingUpdatesWithLock = sinon
.stub()
.callsArgWith(2, new Errors.DeleteMismatchError())
return this.worker._waitForUpdateThenDispatchWorker(this.callback)
})
it('should log a debug message', function () {
return this.logger.debug.called.should.equal(true)
})
return it('should call the callback', function () {
return this.callback.called.should.equal(true)
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})
})
describe('pending updates list with shard key', function () {
beforeEach(function (done) {
this.client = {
auth: sinon.stub(),
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blpop: sinon.stub().callsArgWith(2),
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}
this.redis.createClient = sinon.stub().returns(this.client)
this.queueShardNumber = 7
this.worker = this.DispatchManager.createDispatcher(
this.RateLimiter,
this.queueShardNumber
)
this.worker._waitForUpdateThenDispatchWorker(done)
})
it('should call redis with BLPOP with the correct key', function () {
this.client.blpop
.calledWith(`pending-updates-list-${this.queueShardNumber}`, 0)
.should.equal(true)
})
})
})
return describe('run', function () {
return it('should call _waitForUpdateThenDispatchWorker until shutting down', function (done) {
let callCount = 0
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this.worker._waitForUpdateThenDispatchWorker = callback => {
if (callback == null) {
callback = function () {}
}
callCount++
if (callCount === 3) {
this.settings.shuttingDown = true
}
return setTimeout(() => callback(), 10)
}
sinon.spy(this.worker, '_waitForUpdateThenDispatchWorker')
this.worker.run()
const checkStatus = () => {
if (!this.settings.shuttingDown) {
// retry until shutdown
setTimeout(checkStatus, 100)
} else {
this.worker._waitForUpdateThenDispatchWorker.callCount.should.equal(
3
)
return done()
}
}
return checkStatus()
})
})
})
})