brave backend

To use, add the following dependency to your project:

"com.softwaremill.sttp" %% "brave-backend" % "1.3.0"

This backend depends on brave, a distributed tracing implementation compatible with Zipkin backend services.

The brave backend wraps any other backend, and needs an instance of brave’s HttpTracing or Tracing, for example:

val httpTracing: HttpTracing = ...
implicit val sttpBackend = BraveBackend(AkkaHttpBackend(), httpTracing)

The backend obtains the current trace context using default Brave’s propagation mechanisms. As it’s often challenging to integrate context propagation in an asynchronous setting, there’s also a possibility to add the trace context to the request’s tags:

import com.softwaremill.sttp.brave.BraveBackend._

val parent: TraceContext = ...

sttp
  .get(...)
  .tagWithTraceContext(parent))