How to get nested spans for a request ```const trace = signo SigNoz Community #support

How to get nested spans for a request? ```const tr...

Dhruv garg

04/15/2024, 8:07 AM

How to get nested spans for a request?

Copy code

const trace = signozTracer.startSpan(functionName);
const span = trace.addEvent('mongo-getbyid');

I tried the above approach, but I am getting

mongo-getbyid

in events section, instead of in spans below main span. Any advice to manually instrument database performance traces so that I can see it in a request span as well as separately in mongo group for example.

Dhruv garg

04/15/2024, 8:32 AM

I checked about

tracer*.*startActiveSpan

, but this must be using something like

asynclocalstorage

which I would prefer to avoid.

Srikanth Chekuri

04/15/2024, 12:43 PM

mongo-getbyid

is not a span. You are adding it as an event to the existing span.

Srikanth Chekuri

04/15/2024, 12:44 PM

Why are you trying to manually instrument? Are you aware that there are libraries to help capture db requests automatically https://github.com/open-telemetry/opentelemetry-js-contrib/tree/main/plugins/node?

Dhruv garg

04/15/2024, 1:32 PM

they use asyncContext APIs, which reduces performance by 50% at least. I have already mentioned that, I am not looking for

node:async