overleaf/services/document-updater/test/acceptance/js/CheckRedisMongoSyncStateTests.js

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const MockWebApi = require('./helpers/MockWebApi')
const DocUpdaterClient = require('./helpers/DocUpdaterClient')
const DocUpdaterApp = require('./helpers/DocUpdaterApp')
const { promisify } = require('util')
const { exec } = require('child_process')
const { expect } = require('chai')
const Settings = require('@overleaf/settings')
const fs = require('fs')
const Path = require('path')
const rclient = require('@overleaf/redis-wrapper').createClient(
Settings.redis.documentupdater
)
describe('CheckRedisMongoSyncState', function () {
beforeEach(function (done) {
DocUpdaterApp.ensureRunning(done)
})
beforeEach(async function () {
await rclient.flushall()
})
async function runScript(options) {
let result
try {
result = await promisify(exec)(
Object.entries(options)
.map(([key, value]) => `${key}=${value}`)
.concat(['node', 'scripts/check_redis_mongo_sync_state.js'])
.join(' ')
)
} catch (error) {
// includes details like exit code, stdErr and stdOut
return error
}
result.code = 0
return result
}
describe('without projects', function () {
it('should work when in sync', async function () {
const result = await runScript({})
expect(result.code).to.equal(0)
expect(result.stdout).to.include('Processed 0 projects')
expect(result.stdout).to.include(
'Found 0 projects with 0 out of sync docs'
)
})
})
describe('with a project', function () {
let projectId, docId
beforeEach(function (done) {
projectId = DocUpdaterClient.randomId()
docId = DocUpdaterClient.randomId()
MockWebApi.insertDoc(projectId, docId, {
lines: ['mongo', 'lines'],
version: 1,
})
DocUpdaterClient.getDoc(projectId, docId, done)
})
it('should work when in sync', async function () {
const result = await runScript({})
expect(result.code).to.equal(0)
expect(result.stdout).to.include('Processed 1 projects')
expect(result.stdout).to.include(
'Found 0 projects with 0 out of sync docs'
)
})
describe('with out of sync lines', function () {
beforeEach(function () {
MockWebApi.insertDoc(projectId, docId, {
lines: ['updated', 'mongo', 'lines'],
version: 1,
})
})
it('should detect the out of sync state', async function () {
const result = await runScript({})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 1 projects')
expect(result.stdout).to.include(
'Found 1 projects with 1 out of sync docs'
)
})
})
describe('with out of sync ranges', function () {
beforeEach(function () {
MockWebApi.insertDoc(projectId, docId, {
lines: ['mongo', 'lines'],
version: 1,
ranges: { changes: ['FAKE CHANGE'] },
})
})
it('should detect the out of sync state', async function () {
const result = await runScript({})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 1 projects')
expect(result.stdout).to.include(
'Found 1 projects with 1 out of sync docs'
)
})
})
describe('with out of sync version', function () {
beforeEach(function () {
MockWebApi.insertDoc(projectId, docId, {
lines: ['mongo', 'lines'],
version: 2,
})
})
it('should detect the out of sync state', async function () {
const result = await runScript({})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 1 projects')
expect(result.stdout).to.include(
'Found 1 projects with 1 out of sync docs'
)
})
it('should auto-fix the out of sync state', async function () {
const result = await runScript({
AUTO_FIX_VERSION_MISMATCH: 'true',
})
expect(result.code).to.equal(0)
expect(result.stdout).to.include('Processed 1 projects')
expect(result.stdout).to.include(
'Found 0 projects with 0 out of sync docs'
)
})
})
describe('with a project', function () {
let projectId2, docId2
beforeEach(function (done) {
projectId2 = DocUpdaterClient.randomId()
docId2 = DocUpdaterClient.randomId()
MockWebApi.insertDoc(projectId2, docId2, {
lines: ['mongo', 'lines'],
version: 1,
})
DocUpdaterClient.getDoc(projectId2, docId2, done)
})
it('should work when in sync', async function () {
const result = await runScript({})
expect(result.code).to.equal(0)
expect(result.stdout).to.include('Processed 2 projects')
expect(result.stdout).to.include(
'Found 0 projects with 0 out of sync docs'
)
})
describe('with one out of sync', function () {
beforeEach(function () {
MockWebApi.insertDoc(projectId, docId, {
lines: ['updated', 'mongo', 'lines'],
version: 1,
})
})
it('should detect one project out of sync', async function () {
const result = await runScript({})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 2 projects')
expect(result.stdout).to.include(
'Found 1 projects with 1 out of sync docs'
)
})
it('should write differences to disk', async function () {
const FOLDER = '/tmp/folder'
await fs.promises.rm(FOLDER, { recursive: true, force: true })
const result = await runScript({
WRITE_CONTENT: 'true',
FOLDER,
})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 2 projects')
expect(result.stdout).to.include(
'Found 1 projects with 1 out of sync docs'
)
const dir = Path.join(FOLDER, projectId, docId)
expect(await fs.promises.readdir(FOLDER)).to.deep.equal([projectId])
expect(await fs.promises.readdir(dir)).to.deep.equal([
'mongo-snapshot.txt',
'redis-snapshot.txt',
])
expect(
await fs.promises.readFile(
Path.join(dir, 'mongo-snapshot.txt'),
'utf-8'
)
).to.equal('updated\nmongo\nlines')
expect(
await fs.promises.readFile(
Path.join(dir, 'redis-snapshot.txt'),
'utf-8'
)
).to.equal('mongo\nlines')
})
})
describe('with both out of sync', function () {
beforeEach(function () {
MockWebApi.insertDoc(projectId, docId, {
lines: ['updated', 'mongo', 'lines'],
version: 1,
})
MockWebApi.insertDoc(projectId2, docId2, {
lines: ['updated2', 'mongo', 'lines'],
version: 1,
})
})
it('should detect both projects out of sync', async function () {
const result = await runScript({})
expect(result.code).to.equal(1)
expect(result.stdout).to.include('Processed 2 projects')
expect(result.stdout).to.include(
'Found 2 projects with 2 out of sync docs'
)
})
})
})
})
describe('with more projects than the LIMIT', function () {
for (let i = 0; i < 20; i++) {
beforeEach(function (done) {
const projectId = DocUpdaterClient.randomId()
const docId = DocUpdaterClient.randomId()
MockWebApi.insertDoc(projectId, docId, {
lines: ['mongo', 'lines'],
version: 1,
})
DocUpdaterClient.getDoc(projectId, docId, done)
})
}
it('should flag limit', async function () {
const result = await runScript({ LIMIT: '4' })
expect(result.code).to.equal(2)
// A redis SCAN may return more than COUNT (aka LIMIT) entries. Match loosely.
expect(result.stdout).to.match(/Processed \d+ projects/)
expect(result.stderr).to.include(
'Found too many un-flushed projects (LIMIT=4). Please fix the reported projects first, then try again.'
)
})
it('should continue with auto-flush', async function () {
const result = await runScript({
LIMIT: '4',
FLUSH_IN_SYNC_PROJECTS: 'true',
})
expect(result.code).to.equal(0)
expect(result.stdout).to.include('Processed 20 projects')
})
})
})