fix: graceful shutdown (#3821)

* fix: missing graceful shutdown handler

* fix: asar - use async fs operation

* fix: scheduler - graceful shutdown and wait for running jobs to complete

server/core/scheduler.js

@@ -12,7 +12,8 @@ class Job {
     schedule = 'P1D',
     repeat = false,
     worker = false
-  }) {
+  }, queue) {
+    this.queue = queue
     this.finished = Promise.resolve()
     this.name = name
     this.immediate = immediate
@@ -27,6 +28,7 @@ class Job {
    * @param {Object} data Job Data
    */
   start(data) {
+    this.queue.jobs.push(this)
     if (this.immediate) {
       this.invoke(data)
     } else {
@@ -82,16 +84,20 @@ class Job {
     } catch (err) {
       WIKI.logger.warn(err)
     }
-    if (this.repeat) {
+    if (this.repeat && this.queue.jobs.includes(this)) {
       this.queue(data)
+    } else {
+      this.stop().catch(() => {})
     }
   }
 
   /**
    * Stop any future job invocation from occuring
    */
-  stop() {
+  async stop() {
     clearTimeout(this.timeout)
+    this.queue.jobs = this.queue.jobs.filter(x => x !== this)
+    return this.finished
   }
 }
 
@@ -118,16 +124,11 @@ module.exports = {
     })
   },
   registerJob(opts, data) {
-    const job = new Job(opts)
+    const job = new Job(opts, this)
     job.start(data)
-    if (job.repeat) {
-      this.jobs.push(job)
-    }
     return job
   },
-  stop() {
-    this.jobs.forEach(job => {
-      job.stop()
-    })
+  async stop() {
+    return Promise.all(this.jobs.map(job => job.stop()))
   }
 }