refactor(realtime): extract "save note as revision" to job

Signed-off-by: BoHong Li <a60814billy@gmail.com>

lib/realtime.js

@@ -25,6 +25,7 @@ const { ProcessQueue } = require('./processQueue')
 const { RealtimeClientConnection } = require('./realtimeClientConnection')
 const { UpdateDirtyNoteJob } = require('./realtimeUpdateDirtyNoteJob')
 const { CleanDanglingUserJob } = require('./realtimeCleanDanglingUserJob')
+const { SaveRevisionJob } = require('./realtimeSaveRevisionJob')
 
 // public
 const realtime = {
@@ -38,6 +39,11 @@ const realtime = {
   maintenance: true
 }
 
+const disconnectProcessQueue = new ProcessQueue(2000, 500)
+const updateDirtyNoteJob = new UpdateDirtyNoteJob(realtime)
+const cleanDanglingUserJob = new CleanDanglingUserJob(realtime)
+const saveRevisionJob = new SaveRevisionJob(realtime)
+
 function onAuthorizeSuccess (data, accept) {
   accept()
 }
@@ -88,11 +94,10 @@ function emitCheck (note) {
 var users = {}
 var notes = {}
 
-const disconnectProcessQueue = new ProcessQueue(2000, 500)
 disconnectProcessQueue.start()
-
-const updateDirtyNoteJob = new UpdateDirtyNoteJob(realtime)
-updateDirtyNoteJob.start(realtime)
+updateDirtyNoteJob.start()
+cleanDanglingUserJob.start()
+saveRevisionJob.start()
 
 function disconnectSocketOnNote (note) {
   note.socks.forEach((sock) => {
@@ -157,7 +162,7 @@ function finishUpdateNote (note, _note, callback) {
     lastchangeAt: Date.now()
   }
   _note.update(values).then(function (_note) {
-    saverSleep = false
+    saveRevisionJob.setSaverSleep(false)
     return callback(null, _note)
   }).catch(function (err) {
     logger.error(err)
@@ -165,20 +170,6 @@ function finishUpdateNote (note, _note, callback) {
   })
 }
 
-const cleanDanglingUserJob = new CleanDanglingUserJob(realtime)
-cleanDanglingUserJob.start()
-
-var saverSleep = false
-// save note revision in interval
-setInterval(function () {
-  if (saverSleep) return
-  models.Revision.saveAllNotesRevision(function (err, notes) {
-    if (err) return logger.error('revision saver failed: ' + err)
-    if (notes && notes.length <= 0) {
-      saverSleep = true
-    }
-  })
-}, 5 * 60 * 1000) // 5 mins
 
 function getStatus (callback) {
   models.Note.count().then(function (notecount) {
@@ -806,3 +797,4 @@ exports.getUserPool = getUserPool
 exports.disconnectProcessQueue = disconnectProcessQueue
 exports.notes = notes
 exports.users = users
+exports.saveRevisionJob = saveRevisionJob

lib/realtimeSaveRevisionJob.js

@@ -0,0 +1,45 @@
+'use strict'
+
+const models = require('./models')
+const logger = require('./logger')
+
+/**
+ * clean when user not in any rooms or user not in connected list
+ */
+class SaveRevisionJob {
+  constructor (realtime) {
+    this.realtime = realtime
+    this.saverSleep = false
+  }
+
+  start () {
+    if (this.timer) return
+    this.timer = setInterval(this.saveRevision.bind(this), 5 * 60 * 1000)
+  }
+
+  stop () {
+    if (!this.timer) return
+    clearInterval(this.timer)
+    this.timer = undefined
+  }
+
+  saveRevision () {
+    if (this.getSaverSleep()) return
+    models.Revision.saveAllNotesRevision((err, notes) => {
+      if (err) return logger.error('revision saver failed: ' + err)
+      if (notes && notes.length <= 0) {
+        this.setSaverSleep(true)
+      }
+    })
+  }
+
+  getSaverSleep () {
+    return this.saverSleep
+  }
+
+  setSaverSleep (val) {
+    this.saverSleep = val
+  }
+}
+
+exports.SaveRevisionJob = SaveRevisionJob

test/realtime/cleanDanglingUser.test.js

@@ -25,7 +25,8 @@ describe('cleanDanglingUser', function () {
     mock('../../lib/config', {
       debug: true
     })
-    mock('../../lib/realtimeUpdateDirtyNoteJob', require('../testDoubles/realtimeUpdateDirtyNoteJobStub'))
+    mock('../../lib/realtimeUpdateDirtyNoteJob', require('../testDoubles/realtimeJobStub'))
+    mock('../../lib/realtimeSaveRevisionJob', require('../testDoubles/realtimeJobStub'))
   })
 
   afterEach(() => {
@@ -35,7 +36,7 @@ describe('cleanDanglingUser', function () {
     sinon.restore()
   })
 
-  it('should ', (done) => {
+  it('should call queueForDisconnectSpy when user is dangling', (done) => {
     const realtime = require('../../lib/realtime')
     const queueForDisconnectSpy = sinon.spy(realtime, 'queueForDisconnect')
     realtime.io = {

test/realtime/disconnect-process.test.js

@@ -61,6 +61,7 @@ describe('realtime#disconnect', function () {
 
   afterEach(() => {
     removeModuleFromRequireCache('../../lib/realtime')
+    mock.stopAll()
     sinon.restore()
   })
 

test/realtime/saveRevisionJob.test.js

@@ -0,0 +1,70 @@
+/* eslint-env node, mocha */
+'use strict'
+
+const assert = require('assert')
+const mock = require('mock-require')
+const sinon = require('sinon')
+const { removeModuleFromRequireCache, removeLibModuleCache } = require('./utils')
+
+describe('save revision job', function () {
+  let clock
+  let mockModels
+  let realtime
+  beforeEach(() => {
+    removeLibModuleCache()
+    mockModels = {
+      Revision: {
+        saveAllNotesRevision: sinon.stub()
+      }
+    }
+    clock = sinon.useFakeTimers()
+    mock('../../lib/processQueue', require('../testDoubles/ProcessQueueFake'))
+    mock('../../lib/logger', {
+      error: () => {},
+      info: () => {}
+    })
+    mock('../../lib/history', {})
+    mock('../../lib/models', mockModels)
+    mock('../../lib/config', {
+      debug: true
+    })
+    mock('../../lib/realtimeUpdateDirtyNoteJob', require('../testDoubles/realtimeJobStub'))
+    mock('../../lib/realtimeCleanDanglingUserJob', require('../testDoubles/realtimeJobStub'))
+  })
+
+  afterEach(() => {
+    clock.restore()
+    removeModuleFromRequireCache('../../lib/realtime')
+    removeModuleFromRequireCache('../../lib/realtimeSaveRevisionJob')
+    mock.stopAll()
+    sinon.restore()
+  })
+
+  it('should execute save revision job every 5 min', (done) => {
+    mockModels.Revision.saveAllNotesRevision.callsFake((callback) => {
+      callback(null, [])
+    })
+    realtime = require('../../lib/realtime')
+    clock.tick(5 * 60 * 1000)
+    clock.restore()
+    setTimeout(() => {
+      assert(mockModels.Revision.saveAllNotesRevision.called)
+      assert(realtime.saveRevisionJob.getSaverSleep() === true)
+      done()
+    }, 50)
+  })
+
+  it('should not set saverSleep when more than 1 note save revision', (done) => {
+    mockModels.Revision.saveAllNotesRevision.callsFake((callback) => {
+      callback(null, [1])
+    })
+    realtime = require('../../lib/realtime')
+    clock.tick(5 * 60 * 1000)
+    clock.restore()
+    setTimeout(() => {
+      assert(mockModels.Revision.saveAllNotesRevision.called)
+      assert(realtime.saveRevisionJob.getSaverSleep() === false)
+      done()
+    }, 50)
+  })
+})

test/realtime/utils.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const sinon = require('sinon')
+const path = require('path')
 
 function makeMockSocket (headers, query) {
   const broadCastChannelCache = {}
@@ -32,6 +33,15 @@ function makeMockSocket (headers, query) {
 function removeModuleFromRequireCache (modulePath) {
   delete require.cache[require.resolve(modulePath)]
 }
+function removeLibModuleCache () {
+  const libPath = path.resolve(path.join(__dirname, '../../lib'))
+  Object.keys(require.cache).forEach(key => {
+    if (key.startsWith(libPath)) {
+      delete require.cache[require.resolve(key)]
+    }
+  })
+}
 
 exports.makeMockSocket = makeMockSocket
 exports.removeModuleFromRequireCache = removeModuleFromRequireCache
+exports.removeLibModuleCache = removeLibModuleCache

test/testDoubles/realtimeJobStub.js

@@ -0,0 +1,14 @@
+'use strict'
+
+class realtimeJobStub {
+  start() {
+  }
+
+  stop() {
+  }
+}
+
+exports.realtimeJobStub = realtimeJobStub
+exports.UpdateDirtyNoteJob = realtimeJobStub
+exports.CleanDanglingUserJob = realtimeJobStub
+exports.SaveRevisionJob = realtimeJobStub

test/testDoubles/realtimeUpdateDirtyNoteJobStub.js

@@ -1,12 +0,0 @@
-'use strict'
-
-class UpdateDirtyNoteJobStub {
-  start() {
-  }
-
-  stop() {
-  }
-}
-
-exports.UpdateDirtyNoteJobStub = UpdateDirtyNoteJobStub
-exports.UpdateDirtyNoteJob = UpdateDirtyNoteJobStub