chore: Adding OTEL for New Relic tracing

apps/web/next.config.js

@@ -137,6 +137,9 @@ const nextConfig = {
   eslint: {
     ignoreDuringBuilds: !!process.env.CI,
   },
+  experimental: {
+    instrumentationHook: true,
+  },
   transpilePackages: [
     "@calcom/app-store",
     "@calcom/core",

package.json

@@ -92,6 +92,12 @@
     "vitest-mock-extended": "^1.1.3"
   },
   "dependencies": {
+    "@opentelemetry/api": "^1.4.1",
+    "@opentelemetry/exporter-trace-otlp-grpc": "^0.38.0",
+    "@opentelemetry/resources": "^1.12.0",
+    "@opentelemetry/sdk-trace-base": "^1.12.0",
+    "@opentelemetry/semantic-conventions": "^1.12.0",
+    "@vercel/otel": "^0.2.0",
     "city-timezones": "^1.2.1",
     "eslint": "^8.34.0",
     "lucide-react": "^0.171.0",

packages/lib/server/otel-initiailizer.ts

@@ -0,0 +1,7 @@
+import { trace, context } from "@opentelemetry/api";
+import { registerOTel } from "@vercel/otel";
+
+registerOTel("cal-app-" + process.env.VERCEL_ENV);
+
+export const tracer = trace.getTracer("cal-app-tracer");
+export { context };

packages/trpc/server/middlewares/perfMiddleware.ts

@@ -1,10 +1,12 @@
+import { tracer, context } from "../../../lib/server/OTEL-initializer";
 import { middleware } from "../trpc";
 
 const perfMiddleware = middleware(async ({ path, type, next }) => {
-  performance.mark("Start");
+  const span = tracer.startSpan("tRPC." + path, undefined, context.active());
+  const ms = Math.floor(Math.random() * 1000);
+  span.setAttribute(path, ms);
   const result = await next();
-  performance.mark("End");
+  span.end();
-  performance.measure(`[${result.ok ? "OK" : "ERROR"}][$1] ${type} '${path}'`, "Start", "End");
   return result;
 });