associating CompletionStage operations with the request

[someone-1]

hi I am new to play framework, my team is using apache-skywalking for observablity.

when integrating play framework with the agent I noticed that its not able to link (with common traceId) db calls with http requests, as they run in different threads
trace context is stored/retreived from threadlocal variable (in framework like springmvc single thread makes all the operations for a particular request),

I wanted to understand if there a way to link the operations ?
any suggestions would be helpful

discussion from skywalking repo apache/skywalking#10430

[Squeng]

Yes, ThreadLocals and asynchronous handling of requests don't go together. (I originally stumbled upon the problem in the context of https://logback.qos.ch/manual/mdc.html).

The now deprecated https://www.playframework.com/documentation/2.7.x/JavaHttpContextMigration27#Http.Context.current()-and-Http.Context.request()-deprecated may provide some further background information, by the way.

That said, you could consider using the request ID: https://www.playframework.com/documentation/2.8.x/api/java/play/mvc/Http.RequestHeader.html#id--

Or you could consider propagating the traceId as an attribute: https://www.playframework.com/documentation/2.7.x/api/java/play/mvc/Http.Request.html#addAttr-play.libs.typedmap.TypedKey-A-

I hope this helps!

[someone-1]

thank you
I explored Http.Context.current() internally its also using threadlocal so it won't work when I try to get it from a different thread executing a db operation.