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/*
* =========================================================================================
* Copyright © 2013-2014 the kamon project <http://kamon.io/>
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
* =========================================================================================
*/
package akka.kamon.instrumentation
import kamon.Kamon
import kamon.trace.{ Trace, TraceContextAware }
import akka.actor.ActorRef
import akka.event.Logging.Warning
import akka.pattern.AskTimeoutException
import org.aspectj.lang.ProceedingJoinPoint
import org.aspectj.lang.annotation._
import org.aspectj.lang.reflect.SourceLocation
import scala.concurrent.Future
@Aspect
class AskPatternInstrumentation {
@DeclareMixin("akka.pattern.AskableActorRef$")
def mixinContextAwareToAskableActorRef: TraceContextAware = TraceContextAware.default
@Pointcut("call(* akka.pattern.AskableActorRef$.$qmark$extension(..)) && target(traceContext) && args(actor, *, *)")
def askableActorRefAsk(traceContext: TraceContextAware, actor: ActorRef): Unit = {}
@Around("askableActorRefAsk(traceContext,actor)")
def hookAskTimeoutWarning(pjp: ProceedingJoinPoint, traceContext: TraceContextAware, actor: ActorRef): AnyRef = {
val callInfo = CallInfo(s"${actor.path.name} ?", pjp.getSourceLocation)
val system = traceContext.traceContext.system
val traceExtension = Kamon(Trace)(system)
val future = pjp.proceed().asInstanceOf[Future[AnyRef]]
if (traceExtension.enableAskPatternTracing) {
future.onFailure {
case timeout: AskTimeoutException ⇒
system.eventStream.publish(Warning("AskPatternTracing", classOf[AskPatternInstrumentation],
s"Timeout triggered for ask pattern registered at: ${callInfo.getMessage}"))
}(traceExtension.defaultDispatcher)
}
future
}
case class CallInfo(name: String, sourceLocation: SourceLocation) {
def getMessage: String = {
def locationInfo: String = Option(sourceLocation).map(location ⇒ s"${location.getFileName}:${location.getLine}").getOrElse("<unknown position>")
def line: String = s"$name @ $locationInfo"
s"$line"
}
}
}
//"""Timeout triggered for actor [actor-que-pregunta] asking [actor-al-que-le-pregunta] @ [source location]"?"""
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