Mongodb integration doesn't work when used with promises

[richardsimko]

What version of OpenTelemetry are you using?

0.39.0

What version of Node are you using?

20.12

What did you do?

Running the OpenTelemetry Mongodb integration provided through Sentry v8.

What did you expect to see?

Traces for Mongo DB requests when making queries using promises

What did you see instead?

No traces

Additional context

From my understanding the patch of the server command function only applies the span if there is a callback provided (https://github.com/open-telemetry/opentelemetry-js-contrib/blob/main/plugins/node/opentelemetry-instrumentation-mongodb/src/instrumentation.ts#L443-L447). When using the mongo library with promises no callback is provided (https://github.com/mongodb/node-mongodb-native/blob/main/src/sdam/server.ts#L326) and as a result no spans are created.

I couldn't find anything in the docs saying that promises aren't supported, so perhaps there is something I'm missing?

[AbhiPrasad]

Does this apply for all versions of mongodb?

[richardsimko]

I'm not sure, we're running mongodb@6.6.2

[mydea]

Could you share a concrete code snippet of something that is not instrumented today? (Just to clarify and make it easier to test this)

[richardsimko]

I think it was incorrect of me to assume this was the issue as it seems to have been resolved downstream in Sentry. See getsentry/sentry-javascript#12181 (comment)