1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* ===================================================
* 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 akka.instrumentation
import org.aspectj.lang.annotation._
import org.aspectj.lang.ProceedingJoinPoint
import akka.actor.{ Cell, Props, ActorSystem, ActorRef }
import akka.dispatch.{ Envelope, MessageDispatcher }
import kamon.trace.{ TraceContext, ContextAware, Trace }
import kamon.metrics.{ HdrActorMetricsRecorder, ActorMetrics }
import kamon.Kamon
@Aspect("perthis(actorCellCreation(*, *, *, *, *))")
class BehaviourInvokeTracing {
var path: Option[String] = None
var actorMetrics: Option[HdrActorMetricsRecorder] = None
@Pointcut("execution(akka.actor.ActorCell.new(..)) && args(system, ref, props, dispatcher, parent)")
def actorCellCreation(system: ActorSystem, ref: ActorRef, props: Props, dispatcher: MessageDispatcher, parent: ActorRef): Unit = {}
@After("actorCellCreation(system, ref, props, dispatcher, parent)")
def afterCreation(system: ActorSystem, ref: ActorRef, props: Props, dispatcher: MessageDispatcher, parent: ActorRef): Unit = {
val metricsExtension = Kamon(ActorMetrics)(system)
val simplePathString = ref.path.elements.mkString("/")
if (metricsExtension.shouldTrackActor(simplePathString)) {
path = Some(ref.path.toString)
actorMetrics = Some(metricsExtension.registerActor(simplePathString))
}
}
@Pointcut("(execution(* akka.actor.ActorCell.invoke(*)) || execution(* akka.routing.RoutedActorCell.sendMessage(*))) && args(envelope)")
def invokingActorBehaviourAtActorCell(envelope: Envelope) = {}
@Around("invokingActorBehaviourAtActorCell(envelope)")
def aroundBehaviourInvoke(pjp: ProceedingJoinPoint, envelope: Envelope): Unit = {
val timestampBeforeProcessing = System.nanoTime()
val contextAndTimestamp = envelope.asInstanceOf[ContextAndTimestampAware]
Trace.withContext(contextAndTimestamp.traceContext) {
pjp.proceed()
}
actorMetrics.map { am ⇒
am.recordProcessingTime(System.nanoTime() - timestampBeforeProcessing)
am.recordTimeInMailbox(timestampBeforeProcessing - contextAndTimestamp.timestamp)
}
}
@Pointcut("execution(* akka.actor.ActorCell.stop()) && this(cell)")
def actorStop(cell: Cell): Unit = {}
@After("actorStop(cell)")
def afterStop(cell: Cell): Unit = {
path.map(p ⇒ Kamon(ActorMetrics)(cell.system).unregisterActor(p))
}
}
@Aspect
class EnvelopeTraceContextMixin {
@DeclareMixin("akka.dispatch.Envelope")
def mixin: ContextAndTimestampAware = new ContextAndTimestampAware {
val traceContext: Option[TraceContext] = Trace.context()
val timestamp: Long = System.nanoTime()
}
@Pointcut("execution(akka.dispatch.Envelope.new(..)) && this(ctx)")
def envelopeCreation(ctx: ContextAware): Unit = {}
@After("envelopeCreation(ctx)")
def afterEnvelopeCreation(ctx: ContextAware): Unit = {
// Necessary to force the initialization of ContextAware at the moment of creation.
ctx.traceContext
}
}
trait ContextAndTimestampAware extends ContextAware {
def timestamp: Long
}
|
