Update:Remove node-cron dependency

server/libs/nodeCron/scheduled-task.js

@@ -0,0 +1,51 @@
+'use strict';
+
+const EventEmitter = require('events');
+const Task = require('./task');
+const Scheduler = require('./scheduler');
+const { getId } = require('../../utils/index')
+
+class ScheduledTask extends EventEmitter {
+    constructor(cronExpression, func, options) {
+        super();
+        if (!options) {
+            options = {
+                scheduled: true,
+                recoverMissedExecutions: false
+            };
+        }
+
+        this.options = options;
+        this.options.name = this.options.name || getId()
+
+        this._task = new Task(func);
+        this._scheduler = new Scheduler(cronExpression, options.timezone, options.recoverMissedExecutions);
+
+        this._scheduler.on('scheduled-time-matched', (now) => {
+            this.now(now);
+        });
+
+        if (options.scheduled !== false) {
+            this._scheduler.start();
+        }
+
+        if (options.runOnInit === true) {
+            this.now('init');
+        }
+    }
+
+    now(now = 'manual') {
+        let result = this._task.execute(now);
+        this.emit('task-done', result);
+    }
+
+    start() {
+        this._scheduler.start();
+    }
+
+    stop() {
+        this._scheduler.stop();
+    }
+}
+
+module.exports = ScheduledTask;