metrics: remove path from fetch and request metrics

src/metrics.ts

@@ -3,13 +3,13 @@ import { Counter } from 'prom-client';
 export const httpRequestCounter = new Counter({
   name: 'http_requests_total',
   help: 'Total number of HTTP requests',
-  labelNames: ['method', 'path'],
+  labelNames: ['method'],
 });
 
 export const fetchCounter = new Counter({
   name: 'fetch_total',
   help: 'Total number of fetch requests',
-  labelNames: ['method', 'path'],
+  labelNames: ['method'],
 });
 
 export const firehoseEventCounter = new Counter({

src/middleware/metricsMiddleware.ts

@@ -3,8 +3,8 @@ import { MiddlewareHandler } from '@hono/hono';
 import { httpRequestCounter } from '@/metrics.ts';
 
 export const metricsMiddleware: MiddlewareHandler = async (c, next) => {
-  const { method, path } = c.req;
+  const { method } = c.req;
-  httpRequestCounter.inc({ method, path });
+  httpRequestCounter.inc({ method });
 
   await next();
 };

src/workers/fetch.ts

@@ -25,7 +25,7 @@ const fetchWorker: typeof fetch = async (...args) => {
   await ready;
   const [url, init] = serializeFetchArgs(args);
   const { body, signal, ...rest } = init;
-  fetchCounter.inc({ method: init.method, path: new URL(url).pathname });
+  fetchCounter.inc({ method: init.method });
   const result = await client.fetch(url, { ...rest, body: await prepareBodyForWorker(body) }, signal);
   return new Response(...result);
 };