tRPC + Express + Open Telemetry

PPatrickJ

6/27/2023

I'm wondering if anyone has experience using tRPC in conjunction with Express and Open Telemetry. I've noticed that the tRPC request handler is labeled as "middleware - <anonymous>" while other routes are labeled as "request handler - /path/to/handler". Can anyone shed some light on this?

IItsWendell

8/29/2023

Not sure how you're binding TRPC to Express, but most likely as a middleware, and it probably doesn't have a specific path. You should be able to overwrite the span name possibly with e.g. an trpc middleware.

PPatrickJ

8/29/2023

Yep that was something like that

IItsWendell

8/29/2023

@patrickj7332 Been working on adding OTEL Traces + Logging to my TRPC service on cloudflare workers, it's pretty nice, found this just to see if any packages or something exists for adding TRPC specific spans to the traces but doesn't seem so, so added some basic stuff myself, primarily wrote a trpc middleware that makes sure that each procedure is in it's own span so that batched requests are visualized properly.

PPatrickJ

8/30/2023

Wow that sounds awesome! Please cosinder open sourcing this

IItsWendell

9/20/2023

@PatrickJ there's an open telemetry library in the discord of Cloudflare, other than that the middleware is pretty simple, I've a pretty busy weeks ahead but I'll try to share something soon, if I don't feel free to DM me to remind me 😉

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tRPC + Express + Open Telemetry

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tRPC + Express + Open Telemetry

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