js-executor - improved lifecycle events and added kill for crash event

msa/js-executor/queue/kafkaTemplate.ts

@@ -30,6 +30,8 @@ import {
     TopicMessages
 } from 'kafkajs';
 
+import process, { kill, exit } from 'process';
+
 export class KafkaTemplate implements IQueue {
 
     private logger = _logger(`kafkaTemplate`);
@@ -122,6 +124,7 @@ export class KafkaTemplate implements IQueue {
             this.logger.error(`Got consumer CRASH event, should restart: ${e.payload.restart}`);
             if (!e.payload.restart) {
                 this.logger.error('Going to exit due to not retryable error!');
+                kill(process.pid, 'SIGTERM'); //sending signal to myself process to trigger the handler
                 await this.destroy();
             }
         });
@@ -253,6 +256,7 @@ export class KafkaTemplate implements IQueue {
             }
         }
         this.logger.info('Kafka resources stopped.');
+        exit(0); //same as in version before
     }
 
     private async disconnectProducer(): Promise<void> {

msa/js-executor/server.ts

@@ -81,15 +81,19 @@ process.on('exit', (code: number) => {
 
 async function exit(status: number) {
     logger.info('Exiting with status: %d ...', status);
-    if (httpServer) {
-        const _httpServer = httpServer;
-        httpServer = null;
-        await _httpServer.stop();
-    }
-    if (queues) {
-        const _queues = queues;
-        queues = null;
-        await _queues.destroy();
+    try {
+        if (httpServer) {
+            const _httpServer = httpServer;
+            httpServer = null;
+            await _httpServer.stop();
+        }
+        if (queues) {
+            const _queues = queues;
+            queues = null;
+            await _queues.destroy();
+        }
+    } catch (e) {
+        logger.error('Error on exit');
     }
     process.exit(status);
 }