From a4898bc197ec51d0c82cd011b0cd2680973fc2c6 Mon Sep 17 00:00:00 2001
From: rickkwa <rickyk.162@gmail.com>
Date: Sun, 21 May 2023 02:25:27 -0400
Subject: [PATCH] Add SIGTERM handler

---
 src/backend/server.ts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/backend/server.ts b/src/backend/server.ts
index 078b4b6b..93597a18 100644
--- a/src/backend/server.ts
+++ b/src/backend/server.ts
@@ -131,6 +131,15 @@ export class Server {
     this.server.listen(Config.Server.port, Config.Server.host);
     this.server.on('error', this.onError);
     this.server.on('listening', this.onListening);
+    this.server.on('close', this.onClose);
+
+    // Sigterm handler
+    process.on('SIGTERM', () => {
+      Logger.info(LOG_TAG, 'SIGTERM signal received');
+      this.server.close(() => {
+        process.exit(0);
+      });
+    });
 
     this.onStarted.trigger();
   }
@@ -170,6 +179,13 @@ export class Server {
       typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port;
     Logger.info(LOG_TAG, 'Listening on ' + bind);
   };
+
+  /**
+   * Event listener for HTTP server "close" event.
+   */
+  private onClose = () => {
+    Logger.info(LOG_TAG, 'Closed http server');
+  };
 }