taskManager & recurrent events generation

server/taskManager.js

@@ -0,0 +1,123 @@
+const debug = require('debug')('TaskManager')
+const eventController = require('./api/controller/event')
+// const notifier = require('./notifier')
+
+class Task {
+  constructor ({ name, removable = false, repeatEach = 1, method, args = [] }) {
+    this.name = name
+    this.removable = removable
+    this.repeatEach = repeatEach
+    this.processInNTick = repeatEach
+    this.method = method
+    this.args = args
+  }
+
+  process () {
+    --this.processInNTick
+    if (this.processInNTick > 0) {
+      return
+    }
+    this.processInNTick = this.repeatEach
+    try {
+      const ret = this.method.apply(this, this.args)
+      if (ret && typeof ret.then === 'function') {
+        ret.catch(e => debug('TASK ERROR ', this.name, e))
+      }
+    } catch (e) {
+      debug('TASK ERROR ', this.name, e)
+    }
+  }
+}
+
+/**
+ * Manage tasks:
+ * - Send emails
+ * - Send AP notifications
+ * - Create recurrent events
+ * - Sync AP federation profiles
+ */
+
+class TaskManager {
+  constructor () {
+    this.interval = 60 * 100
+    this.tasks = []
+  }
+
+  start (interval = 60 * 100) {
+    this.interval = interval
+    this.timeout = setTimeout(this.tick.bind(this), interval)
+  }
+
+  stop () {
+    if (this.timeout) {
+      debug('STOP')
+      clearTimeout(this.timeout)
+      this.timeout = false
+    }
+  }
+
+  add (task) {
+    debug('ADD TASK ', task.name)
+    this.tasks.push(task)
+  }
+
+  process () {
+    if (!this.tasks.length) {
+      return
+    }
+
+    this.tasks = this.tasks
+      .filter(async task => {
+        if (task.removable) {
+          await task.process()
+        } else {
+          return task
+        }
+      })
+
+    return Promise.all(this.tasks.map(task => task.process()))
+  }
+
+  async tick () {
+    debug('TICK')
+    await this.process()
+    this.timeout = setTimeout(this.tick.bind(this), this.interval)
+  }
+}
+
+const TS = new TaskManager()
+
+// create and clean recurrent events
+TS.add(new Task({
+  name: 'RECURRENT_EVENT',
+  method: eventController._createRecurrent,
+  repeatEach: 10
+}))
+
+// daily morning notification
+// TS.add(new Task({
+//   name: 'NOTIFICATION',
+//   method: notifier._daily,
+//   repeatEach: 1
+// }))
+
+// AP users profile sync
+// TaskManager.add(new Task({
+//   name: 'AP_PROFILE_SYNC',
+//   method: federation._sync,
+//   repeatEach: 60 * 24
+// }))
+
+// Search for places position via nominatim
+// TaskManager.add(new Task({
+//   name: 'NOMINATIM_QUERY',
+//   method: places._nominatimQuery,
+//   repeatEach: 60
+// }))
+
+// TS.start()
+// TS.add(new Task({ name: 'removable #1', method: daje, args: ['removable #1'], removable: true }))
+// TS.add(new Task({ name: 'non removable #2', method: daje, args: ['non removable #2'] }))
+// TS.add(new Task({ name: 'non removable and repeat each #2', method: daje, args: ['nn rm and rpt #5'], repeatEach: 5 }))
+
+module.exports = { Task, TaskManager: TS }