Create a new Tracing decorator

API sketch:

Tracing trace = Tracing.of("traceName")
   .withTag("tagKey, "tagValue")
   .withTag("tagKey, "tagValue")
   .build();

Supplier<String> supplier = Tracing.decorateSupplier(trace, backendService::doSomething);


Flowable<TraceEvent> evenStream = trace.getEventStream();

A TraceEvent contains the trace ID, create time, the processing duration of the trace and a custom list of tags.

A client can consume the trace event stream and store events in InfluxDB, ElasticSearch.

We should have a look at the OpenTracing API (https://github.com/opentracing/opentracing-java)

@storozhukBM What do you thing about it?

[RobWin]

You can’t. I closed the issue because noboday wants to implement it

[RobWin]

@camproto If you are using the Bulkhead or TimeLimiter, you can already configure how to propagate threadLocals from thread to thread by implement the ContextPropagator interface. There are too many frameworks which are using different thread locals. We cannot support all of them. But the community could provide implementations of the ContextPropagator interface. We are using the same concept to propagate the SLf4j MDC.