1 files changed, 80 insertions, 0 deletions
diff --git a/kamon-core/src/main/scala/kamon/instrumentation/akka/ActorSystemMessageInstrumentation.scala b/kamon-core/src/main/scala/kamon/instrumentation/akka/ActorSystemMessageInstrumentation.scala
new file mode 100644
index 00000000..9b6b6866
--- /dev/null
+++ b/kamon-core/src/main/scala/kamon/instrumentation/akka/ActorSystemMessageInstrumentation.scala
@@ -0,0 +1,80 @@
+/*
+ * =========================================================================================
+ * 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.instrumentation
+
+import akka.dispatch.sysmsg.EarliestFirstSystemMessageList
+import kamon.trace.{ TraceContextAware, TraceRecorder }
+import org.aspectj.lang.ProceedingJoinPoint
+import org.aspectj.lang.annotation._
+
+@Aspect
+class ActorSystemMessageInstrumentation {
+
+  @Pointcut("execution(* akka.actor.ActorCell.invokeAll$1(..)) && args(messages, *)")
+  def systemMessageProcessing(messages: EarliestFirstSystemMessageList): Unit = {}
+
+  @Around("systemMessageProcessing(messages)")
+  def aroundSystemMessageInvoke(pjp: ProceedingJoinPoint, messages: EarliestFirstSystemMessageList): Any = {
+    if (messages.nonEmpty) {
+      val ctx = messages.head.asInstanceOf[TraceContextAware].traceContext
+      TraceRecorder.withTraceContext(ctx)(pjp.proceed())
+
+    } else pjp.proceed()
+  }
+}
+
+@Aspect
+class TraceContextIntoSystemMessageMixin {
+
+  @DeclareMixin("akka.dispatch.sysmsg.SystemMessage+")
+  def mixinTraceContextAwareToSystemMessage: TraceContextAware = TraceContextAware.default
+
+  @Pointcut("execution(akka.dispatch.sysmsg.SystemMessage+.new(..)) && this(ctx)")
+  def envelopeCreation(ctx: TraceContextAware): Unit = {}
+
+  @After("envelopeCreation(ctx)")
+  def afterEnvelopeCreation(ctx: TraceContextAware): Unit = {
+    // Necessary to force the initialization of ContextAware at the moment of creation.
+    ctx.traceContext
+  }
+}
+
+@Aspect
+class TraceContextIntoRepointableActorRefMixin {
+
+  @DeclareMixin("akka.actor.RepointableActorRef")
+  def mixinTraceContextAwareToRepointableActorRef: TraceContextAware = TraceContextAware.default
+
+  @Pointcut("execution(akka.actor.RepointableActorRef.new(..)) && this(ctx)")
+  def envelopeCreation(ctx: TraceContextAware): Unit = {}
+
+  @After("envelopeCreation(ctx)")
+  def afterEnvelopeCreation(ctx: TraceContextAware): Unit = {
+    // Necessary to force the initialization of ContextAware at the moment of creation.
+    ctx.traceContext
+  }
+
+  @Pointcut("execution(* akka.actor.RepointableActorRef.point(..)) && this(repointableActorRef)")
+  def repointableActorRefCreation(repointableActorRef: TraceContextAware): Unit = {}
+
+  @Around("repointableActorRefCreation(repointableActorRef)")
+  def afterRepointableActorRefCreation(pjp: ProceedingJoinPoint, repointableActorRef: TraceContextAware): Any = {
+    TraceRecorder.withTraceContext(repointableActorRef.traceContext) {
+      pjp.proceed()
+    }
+  }
+}
+\ No newline at end of file