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package kamon
import org.slf4j.MDC
/**
* Provides support for making a TraceContext available as ThreadLocal and cleanning up afterwards.
*/
trait TraceContextSwap {
def withContext[A](ctx: Option[TraceContext], body: => A): A = withContext(ctx, body, body)
def withContext[A](ctx: Option[TraceContext], primary: => A, fallback: => A): A = {
ctx match {
case Some(context) => {
MDC.put("uow", context.userContext.get.asInstanceOf[String])
Tracer.set(context)
val bodyResult = primary
Tracer.clear
MDC.remove("uow")
bodyResult
}
case None => fallback
}
}
}
object TraceContextSwap extends TraceContextSwap
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