feat: Notify systemd for start, stop, watchdog

lib/controller.ts

@@ -165,6 +165,16 @@ export class Controller {
             (data) => utils.publishLastSeen(data, settings.get(), false, this.publishEntityState));
 
         logger.info(`Zigbee2MQTT started!`);
+
+        if (process.env.NOTIFY_SOCKET) {
+            const notify = require('sd-notify');
+            const watchdogInterval = notify.watchdogInterval();
+            if (watchdogInterval > 0) {
+                const interval = Math.floor(watchdogInterval / 2);
+                notify.startWatchdogMode(interval);
+            }
+            notify.ready();
+        }
     }
 
     @bind async enableDisableExtension(enable: boolean, name: string): Promise<void> {
@@ -189,6 +199,10 @@ export class Controller {
     }
 
     async stop(restart = false): Promise<void> {
+        if (process.env.NOTIFY_SOCKET) {
+            require('sd-notify').stopping();
+        }
+
         // Call extensions
         await this.callExtensions('stop', this.extensions);
         this.eventBus.removeListeners(this);
@@ -205,6 +219,10 @@ export class Controller {
             logger.error('Failed to stop Zigbee2MQTT');
             await this.exit(1, restart);
         }
+
+        if (process.env.NOTIFY_SOCKET) {
+            require('sd-notify').stopWatchdogMode();
+        }
     }
 
     async exit(code: number, restart = false): Promise<void> {

package.json

@@ -54,6 +54,7 @@
     "mqtt": "^5.3.4",
     "object-assign-deep": "^0.4.0",
     "rimraf": "^5.0.5",
+    "sd-notify": "^2.8.0",
     "semver": "^7.5.4",
     "source-map-support": "^0.5.21",
     "uri-js": "^4.4.1",

scripts/install.sh

@@ -36,7 +36,8 @@ Description=zigbee2mqtt
 After=network.target
 
 [Service]
-ExecStart=/usr/bin/npm start
+Type=notify
+ExecStart=/usr/bin/node index.js
 WorkingDirectory=/opt/zigbee2mqtt
 StandardOutput=inherit
 StandardError=inherit