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package kamon.instrumentation
import org.aspectj.lang.annotation._
import kamon.{Tracer, TraceContext}
import org.aspectj.lang.ProceedingJoinPoint
import scala.Some
/**
* Marker interface, just to make sure we don't instrument all the Runnables in the classpath.
*/
trait TraceContextAwareRunnable {
def traceContext: Option[TraceContext]
}
@Aspect
class RunnableInstrumentation {
/**
* These are the Runnables that need to be instrumented and make the TraceContext available
* while their run method is executed.
*/
@DeclareMixin("scala.concurrent.impl.CallbackRunnable || scala.concurrent.impl.Future.PromiseCompletingRunnable")
def onCompleteCallbacksRunnable: TraceContextAwareRunnable = new TraceContextAwareRunnable {
val traceContext: Option[TraceContext] = Tracer.context()
}
/**
* Pointcuts
*/
@Pointcut("execution(kamon.instrumentation.TraceContextAwareRunnable+.new(..)) && this(runnable)")
def instrumentedRunnableCreation(runnable: TraceContextAwareRunnable): Unit = {}
@Pointcut("execution(* kamon.instrumentation.TraceContextAwareRunnable+.run()) && this(runnable)")
def runnableExecution(runnable: TraceContextAwareRunnable) = {}
import kamon.TraceContextSwap.withContext
@After("instrumentedRunnableCreation(runnable)")
def beforeCreation(runnable: TraceContextAwareRunnable) = {
val x = runnable.traceContext
/*if(runnable.traceContext.isEmpty)
println("WTFWI from: " + (new Throwable).getStackTraceString)
else
println("NOWTF: " + (new Throwable).getStackTraceString)*/
/* if(traceContext.isEmpty)
println("NO TRACE CONTEXT FOR RUNNABLE at: [[[%s]]]", (new Throwable).getStackTraceString)//println((new Throwable).getStackTraceString)
else
println("SUPER TRACE CONTEXT FOR RUNNABLE at: [[[%s]]]", (new Throwable).getStackTraceString)*/
}
@Around("runnableExecution(runnable)")
def around(pjp: ProceedingJoinPoint, runnable: TraceContextAwareRunnable) = {
import pjp._
/*println("EXECUTING")
if(runnable.traceContext.isEmpty)
println("NOMONEY")
runnable.traceContext match {
case Some(context) => {
//MDC.put("uow", context.userContext.get.asInstanceOf[String])
Tracer.set(context)
val bodyResult = proceed()
Tracer.clear
//MDC.remove("uow")
bodyResult
}
case None => proceed()
}*/
withContext(runnable.traceContext, proceed())
}
}
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