Ability to change the timeout of the graceful shutdown via env var

Author: ericallam

apps/webapp/server.ts

@@ -62,7 +62,23 @@ if (process.env.HTTP_SERVER_DISABLED !== "true") {
   });
 
   // Handle shutdowns gracefully
-  createTerminus(server, { signals: ["SIGINT", "SIGTERM"], timeout: 5000 });
+  createTerminus(server, {
+    signals: ["SIGINT", "SIGTERM"],
+    timeout: process.env.GRACEFUL_SHUTDOWN_TIMEOUT
+      ? Number(process.env.GRACEFUL_SHUTDOWN_TIMEOUT)
+      : 5000,
+    onSignal: async () => {
+      console.log("[terminus] onSignal: starting cleanup");
+    },
+    onShutdown: async () => {
+      console.log("[terminus] onShutdown: cleanup finished, server is shutting down");
+    },
+    onSendFailureDuringShutdown: async () => {
+      console.log(
+        "[terminus] onSendFailureDuringShutdown: cleanup finished, server is shutting down"
+      );
+    },
+  });
 } else {
   console.log(`✅ app ready (skipping http server)`);
 }