Correctly configuring route handlers transaction names for OTel and New Relic integration

[thomasoreilly]

Summary

I'm looking for guidance on configuring OTel integration that will be consumed by New Relic. For the correct transaction names to appear I need to explicitly provide a route name to OTel. How I do this is by wrapping all route handlers with a function that sets rpcMetadata.route with a provided name.

Additional information

Here's the function that sets the transaction name, this works and the names are correctly displayed in New Relic transactions page. If I don't set this explicitly then all transaction will be named as their HTTP verbs. Is there a better way to have the route handler names correctly configured which would remove the need to wrap all route handlers?

import { NextRequest, NextResponse } from 'next/server';
import { getRPCMetadata, RPCType } from '@opentelemetry/core';
import { context } from '@opentelemetry/api';

export function applyRouteName(route: string, handler: (req: NextRequest) => Promise<NextResponse>) {
  return async (req: NextRequest) => {
    try {
      // Set OpenTelemetry route metadata
      const rpcMetadata = getRPCMetadata(context.active());
      if (rpcMetadata?.type === RPCType.HTTP) {
        // Logic to set route name so the transaction name is set correctly in APM
        rpcMetadata.route = route;
      }
    } catch {
      // swallow errors...
    }
    return handler(req);
  };
}

### Example

_No response_