From 7a10c0ef2a6566229e8571f6d385ca2ff794cc20 Mon Sep 17 00:00:00 2001
From: Ivan Topolnak <itopolnak@despegar.com>
Date: Thu, 2 Jan 2014 18:09:53 -0300
Subject: integrate trace and metrics into the base project

---
 .../ActorMessagePassingTracingSpec.scala           | 84 ++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 kamon-core/src/test/scala/kamon/trace/instrumentation/ActorMessagePassingTracingSpec.scala

(limited to 'kamon-core/src/test/scala/kamon/trace/instrumentation/ActorMessagePassingTracingSpec.scala')

diff --git a/kamon-core/src/test/scala/kamon/trace/instrumentation/ActorMessagePassingTracingSpec.scala b/kamon-core/src/test/scala/kamon/trace/instrumentation/ActorMessagePassingTracingSpec.scala
new file mode 100644
index 00000000..89251bf4
--- /dev/null
+++ b/kamon-core/src/test/scala/kamon/trace/instrumentation/ActorMessagePassingTracingSpec.scala
@@ -0,0 +1,84 @@
+/* ===================================================
+ * Copyright © 2013 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 kamon.trace.instrumentation
+
+import org.scalatest.{ WordSpecLike, Matchers }
+import akka.actor.{ ActorRef, Actor, Props, ActorSystem }
+
+import akka.testkit.{ ImplicitSender, TestKit }
+import kamon.trace.Trace
+import akka.pattern.{ pipe, ask }
+import akka.util.Timeout
+import scala.concurrent.duration._
+import scala.concurrent.{ Await, Future }
+import akka.routing.RoundRobinRouter
+import kamon.trace.TraceContext
+
+class ActorMessagePassingTracingSpec extends TestKit(ActorSystem("actor-message-passing-tracing-spec")) with WordSpecLike with ImplicitSender {
+  implicit val executionContext = system.dispatcher
+
+  "the message passing instrumentation" should {
+    "propagate the TraceContext using bang" in new TraceContextEchoFixture {
+      Trace.withContext(testTraceContext) {
+        ctxEchoActor ! "test"
+      }
+
+      expectMsg(testTraceContext)
+    }
+
+    "propagate the TraceContext using tell" in new TraceContextEchoFixture {
+      Trace.withContext(testTraceContext) {
+        ctxEchoActor.tell("test", testActor)
+      }
+
+      expectMsg(testTraceContext)
+    }
+
+    "propagate the TraceContext using ask" in new TraceContextEchoFixture {
+      implicit val timeout = Timeout(1 seconds)
+      Trace.withContext(testTraceContext) {
+        // The pipe pattern use Futures internally, so FutureTracing test should cover the underpinnings of it.
+        (ctxEchoActor ? "test") pipeTo (testActor)
+      }
+
+      expectMsg(testTraceContext)
+    }
+
+    "propagate the TraceContext to actors behind a router" in new RoutedTraceContextEchoFixture {
+      Trace.withContext(testTraceContext) {
+        ctxEchoActor ! "test"
+      }
+
+      expectMsg(testTraceContext)
+    }
+  }
+
+  trait TraceContextEchoFixture {
+    val testTraceContext = Some(Trace.newTraceContext(""))
+    val ctxEchoActor = system.actorOf(Props[TraceContextEcho])
+  }
+
+  trait RoutedTraceContextEchoFixture extends TraceContextEchoFixture {
+    override val ctxEchoActor = system.actorOf(Props[TraceContextEcho].withRouter(RoundRobinRouter(nrOfInstances = 1)))
+  }
+}
+
+class TraceContextEcho extends Actor {
+  def receive = {
+    case msg: String ⇒ sender ! Trace.context()
+  }
+}
+
-- 
cgit v1.2.3