feat: add undici fetch interceptor (#687)

Co-authored-by: Meier Lukas <meierschlumpf@gmail.com>

apps/tasks/package.json

@@ -33,7 +33,8 @@
     "@homarr/analytics": "workspace:^0.1.0",
     "dotenv": "^16.4.5",
     "node-cron": "^3.0.3",
-    "superjson": "2.2.1"
+    "superjson": "2.2.1",
+    "undici": "6.18.2"
   },
   "devDependencies": {
     "@homarr/eslint-config": "workspace:^0.2.0",

apps/tasks/src/main.ts

@@ -1,3 +1,6 @@
+// This import has to be the first import in the file so that the agent is overridden before any other modules are imported.
+import "./undici-log-agent-override";
+
 import { jobs } from "./jobs";
 import { seedServerSettingsAsync } from "./seed-server-settings";
 

apps/tasks/src/undici-log-agent-override.ts

@@ -0,0 +1,20 @@
+import type { Dispatcher } from "undici";
+import { Agent, setGlobalDispatcher } from "undici";
+
+import { logger } from "@homarr/log";
+
+class LoggingAgent extends Agent {
+  constructor(...props: ConstructorParameters<typeof Agent>) {
+    super(...props);
+  }
+
+  dispatch(options: Dispatcher.DispatchOptions, handler: Dispatcher.DispatchHandlers): boolean {
+    logger.info(
+      `Dispatching request ${options.method} ${options.origin as string}${options.path} (${Object.keys(options.headers as object).length} headers)`,
+    );
+    return super.dispatch(options, handler);
+  }
+}
+
+const agent = new LoggingAgent();
+setGlobalDispatcher(agent);