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package kamon
import akka.testkit.TestKit
import akka.actor.{Props, Actor, ActorSystem}
import org.scalatest.{Matchers, WordSpecLike}
import akka.event.Logging.Warning
import scala.concurrent.duration._
import akka.pattern.ask
import akka.util.Timeout
import kamon.trace.{Trace, ContextAware}
import org.scalatest.OptionValues._
class AskPatternTracingSpec extends TestKit(ActorSystem("ask-pattern-tracing-spec")) with WordSpecLike with Matchers {
"the AskPatternTracing" should {
"log a warning with a stack trace and TraceContext taken from the moment the ask was triggered" in {
implicit val ec = system.dispatcher
implicit val timeout = Timeout(10 milliseconds)
val noReply = system.actorOf(Props[NoReply])
system.eventStream.subscribe(testActor, classOf[Warning])
within(500 milliseconds) {
val initialCtx = Trace.start("ask-test")
noReply ? "hello"
val warn = expectMsgPF() {
case warn: Warning if warn.message.toString.contains("Timeout triggered for ask pattern") => warn
}
val capturedCtx = warn.asInstanceOf[ContextAware].traceContext
capturedCtx should be('defined)
capturedCtx.value should equal (initialCtx)
}
}
}
}
class NoReply extends Actor {
def receive = {
case any =>
}
}
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