Update:Remove node-cron dependency

server/libs/nodeCron/background-scheduled-task/index.js

@@ -0,0 +1,67 @@
+const EventEmitter = require('events');
+const path = require('path');
+const { fork } = require('child_process');
+const { getId } = require('../../../utils/index')
+
+const daemonPath = `${__dirname}/daemon.js`;
+
+class BackgroundScheduledTask extends EventEmitter {
+    constructor(cronExpression, taskPath, options) {
+        super();
+        if (!options) {
+            options = {
+                scheduled: true,
+                recoverMissedExecutions: false,
+            };
+        }
+        this.cronExpression = cronExpression;
+        this.taskPath = taskPath;
+        this.options = options;
+        this.options.name = this.options.name || getId()
+
+        if (options.scheduled) {
+            this.start();
+        }
+    }
+
+    start() {
+        this.stop();
+        this.forkProcess = fork(daemonPath);
+
+        this.forkProcess.on('message', (message) => {
+            switch (message.type) {
+                case 'task-done':
+                    this.emit('task-done', message.result);
+                    break;
+            }
+        });
+
+        let options = this.options;
+        options.scheduled = true;
+
+        this.forkProcess.send({
+            type: 'register',
+            path: path.resolve(this.taskPath),
+            cron: this.cronExpression,
+            options: options
+        });
+    }
+
+    stop() {
+        if (this.forkProcess) {
+            this.forkProcess.kill();
+        }
+    }
+
+    pid() {
+        if (this.forkProcess) {
+            return this.forkProcess.pid;
+        }
+    }
+
+    isRunning() {
+        return !this.forkProcess.killed;
+    }
+}
+
+module.exports = BackgroundScheduledTask;