blob: ce19a7e68dc94dea394493fa444b3cf375c79cd7 (
plain) (
blame)
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
|
package kamon.instrumentation
import org.aspectj.lang.annotation._
import kamon.TraceContext
import org.aspectj.lang.ProceedingJoinPoint
import scala.Some
/**
* Marker interface, just to make sure we don't instrument all the Runnables in the classpath.
*/
trait TraceContextAwareRunnable extends Runnable {}
@Aspect("perthis(instrumentedRunnableCreation())")
class PromiseCompletingRunnableInstrumentation {
/**
* These are the Runnables that need to be instrumented and make the TraceContext available
* while their run method is executed.
*/
@DeclareMixin("scala.concurrent.impl.CallbackRunnable || scala.concurrent.impl.Future.PromiseCompletingRunnable")
def onCompleteCallbacksRunnable: TraceContextAwareRunnable = null
/**
* Pointcuts
*/
@Pointcut("execution(kamon.instrumentation.TraceContextAwareRunnable+.new(..))")
def instrumentedRunnableCreation(): Unit = {}
@Pointcut("execution(* kamon.instrumentation.TraceContextAwareRunnable.run())")
def runnableExecution() = {}
/**
* Aspect members
*/
private val traceContext = TraceContext.current
/**
* Advices
*/
@Around("runnableExecution()")
def around(pjp: ProceedingJoinPoint) = {
import pjp._
traceContext match {
case Some(ctx) => {
TraceContext.set(ctx)
proceed()
TraceContext.clear
}
case None => proceed()
}
}
}
|
