add guage metric to fetchWithRetry function

Author: nsdeschenes

packages/bundler-plugin-core/src/utils/fetchWithRetry.ts

@@ -1,3 +1,4 @@
+import { type SentryClient } from "../sentry.ts";
 import { BadResponseError } from "../errors/BadResponseError";
 import { DEFAULT_RETRY_DELAY } from "./constants";
 import { delay } from "./delay";
@@ -8,19 +9,22 @@ interface FetchWithRetryArgs {
   retryCount: number;
   requestData: RequestInit;
   name?: string;
+  sentryClient?: SentryClient;
 }
 
 export const fetchWithRetry = async ({
   url,
   retryCount,
   requestData,
   name,
+  sentryClient,
 }: FetchWithRetryArgs) => {
   let response = new Response(null, { status: 400 });
+  let retryCounter = 0;
 
   for (let i = 0; i < retryCount + 1; i++) {
     try {
-      debug(`Attempting to fetch ${name}, attempt: ${i}`);
+      debug(`Attempting to fetch \`${name}\`, attempt: ${i}`);
       await delay(DEFAULT_RETRY_DELAY * i);
       response = await fetch(url, requestData);
 
@@ -29,19 +33,27 @@ export const fetchWithRetry = async ({
       }
       break;
     } catch (err) {
-      debug(`${name} fetch attempt ${i} failed`);
+      debug(`\`${name}\` fetch attempt ${i} failed`);
       const isLastAttempt = i + 1 === retryCount;
+      retryCounter = i;
 
       if (isLastAttempt) {
         red(`${name} failed after ${i} attempts`);
 
         if (!(err instanceof BadResponseError)) {
           throw err;
         }
+
+        sentryClient?.metricsAggregator?.add(
+          "g",
+          `fetch.${name}`,
+          retryCounter,
+        );
         return response;
       }
     }
   }
 
+  sentryClient?.metricsAggregator?.add("g", `fetch.${name}`, retryCounter);
   return response;
 };