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package kamon.instrumentation
import org.aspectj.lang.annotation._
import java.util.concurrent._
import org.aspectj.lang.ProceedingJoinPoint
import java.util
import kamon.metric.{DispatcherMetricCollector, Histogram, MetricDirectory, ExecutorServiceMetricCollector}
import akka.dispatch.{MonitorableThreadFactory, ExecutorServiceFactory}
import com.typesafe.config.Config
import kamon.Kamon
import scala.concurrent.forkjoin.ForkJoinPool
import akka.dispatch.ForkJoinExecutorConfigurator.AkkaForkJoinPool
@Aspect
class ActorSystemInstrumentation {
@Pointcut("execution(akka.actor.ActorSystemImpl.new(..)) && args(name, applicationConfig, classLoader)")
def actorSystemInstantiation(name: String, applicationConfig: Config, classLoader: ClassLoader) = {}
@After("actorSystemInstantiation(name, applicationConfig, classLoader)")
def registerActorSystem(name: String, applicationConfig: Config, classLoader: ClassLoader): Unit = {
//Kamon.Metric.registerActorSystem(name)
}
}
@Aspect("perthis(forkJoinPoolInstantiation(int, scala.concurrent.forkjoin.ForkJoinPool.ForkJoinWorkerThreadFactory, java.lang.Thread.UncaughtExceptionHandler))")
class ForkJoinPoolInstrumentation {
var activeThreadsHistogram: Histogram = _
var poolSizeHistogram: Histogram = _
@Pointcut("execution(akka.dispatch.ForkJoinExecutorConfigurator.AkkaForkJoinPool.new(..)) && args(parallelism, threadFactory, exceptionHandler)")
def forkJoinPoolInstantiation(parallelism: Int, threadFactory: ForkJoinPool.ForkJoinWorkerThreadFactory, exceptionHandler: Thread.UncaughtExceptionHandler) = {}
@After("forkJoinPoolInstantiation(parallelism, threadFactory, exceptionHandler)")
def initializeMetrics(parallelism: Int, threadFactory: ForkJoinPool.ForkJoinWorkerThreadFactory, exceptionHandler: Thread.UncaughtExceptionHandler): Unit = {
/*val (actorSystemName, dispatcherName) = threadFactory match {
case mtf: MonitorableThreadFactory => splitName(mtf.name, Kamon.Metric.actorSystemNames)
case _ => ("Unknown", "Unknown")
}
val metrics = Kamon.Metric.actorSystem(actorSystemName).get.registerDispatcher(dispatcherName)
for(m <- metrics) {
activeThreadsHistogram = m.activeThreadCount
poolSizeHistogram = m.poolSize
println(s"Registered $dispatcherName for actor system $actorSystemName")
}*/
}
def splitName(threadFactoryName: String, knownActorSystems: List[String]): (String, String) = {
knownActorSystems.find(threadFactoryName.startsWith(_)).map(asName => (asName, threadFactoryName.substring(asName.length+1))).getOrElse(("Unkown", "Unkown"))
}
@Pointcut("execution(* scala.concurrent.forkjoin.ForkJoinPool.scan(..)) && this(fjp)")
def forkJoinScan(fjp: AkkaForkJoinPool): Unit = {}
@After("forkJoinScan(fjp)")
def updateMetrics(fjp: AkkaForkJoinPool): Unit = {
activeThreadsHistogram.update(fjp.getActiveThreadCount)
poolSizeHistogram.update(fjp.getPoolSize)
}
}
/**
* ExecutorService monitoring base:
*/
trait ExecutorServiceCollector {
def updateActiveThreadCount(diff: Int): Unit
def updateTotalThreadCount(diff: Int): Unit
def updateQueueSize(diff: Int): Unit
}
trait WatchedExecutorService {
def collector: ExecutorServiceCollector
}
trait ExecutorServiceMonitoring {
def dispatcherMetrics: DispatcherMetricCollector
}
class ExecutorServiceMonitoringImpl extends ExecutorServiceMonitoring {
@volatile var dispatcherMetrics: DispatcherMetricCollector = _
}
case class NamedExecutorServiceFactoryDelegate(actorSystemName: String, dispatcherName: String, delegate: ExecutorServiceFactory) extends ExecutorServiceFactory {
def createExecutorService: ExecutorService = delegate.createExecutorService
}
@Aspect
class ExecutorServiceFactoryProviderInstrumentation {
@Pointcut("execution(* akka.dispatch.ExecutorServiceFactoryProvider+.createExecutorServiceFactory(..)) && args(dispatcherName, threadFactory) && if()")
def factoryMethodCall(dispatcherName: String, threadFactory: ThreadFactory): Boolean = {
true
}
@Around("factoryMethodCall(dispatcherName, threadFactory)")
def enrichFactoryCreationWithNames(pjp: ProceedingJoinPoint, dispatcherName: String, threadFactory: ThreadFactory): ExecutorServiceFactory = {
val delegate = pjp.proceed().asInstanceOf[ExecutorServiceFactory] // Safe Cast
val actorSystemName = threadFactory match {
case m: MonitorableThreadFactory => m.name
case _ => "Unknown" // Find an alternative way to find the actor system name in case we start seeing "Unknown" as the AS name.
}
new NamedExecutorServiceFactoryDelegate(actorSystemName, dispatcherName, delegate)
}
}
@Aspect
class NamedExecutorServiceFactoryDelegateInstrumentation {
@Pointcut("execution(* akka.dispatch.NamedExecutorServiceFactoryDelegate.createExecutorService()) && this(namedFactory)")
def factoryMethodCall(namedFactory: NamedExecutorServiceFactoryDelegate) = {}
@Around("factoryMethodCall(namedFactory)")
def enrichExecutorServiceWithMetricNameRoot(pjp: ProceedingJoinPoint, namedFactory: NamedExecutorServiceFactoryDelegate): ExecutorService = {
val delegate = pjp.proceed().asInstanceOf[ExecutorService]
val executorFullName = MetricDirectory.nameForDispatcher(namedFactory.actorSystemName, namedFactory.dispatcherName)
ExecutorServiceMetricCollector.register(executorFullName, delegate)
new NamedExecutorServiceDelegate(executorFullName, delegate)
}
}
case class NamedExecutorServiceDelegate(fullName: String, delegate: ExecutorService) extends ExecutorService {
def shutdown() = {
ExecutorServiceMetricCollector.deregister(fullName)
delegate.shutdown()
}
def shutdownNow(): util.List[Runnable] = delegate.shutdownNow()
def isShutdown: Boolean = delegate.isShutdown
def isTerminated: Boolean = delegate.isTerminated
def awaitTermination(timeout: Long, unit: TimeUnit): Boolean = delegate.awaitTermination(timeout, unit)
def submit[T](task: Callable[T]): Future[T] = delegate.submit(task)
def submit[T](task: Runnable, result: T): Future[T] = delegate.submit(task, result)
def submit(task: Runnable): Future[_] = delegate.submit(task)
def invokeAll[T](tasks: util.Collection[_ <: Callable[T]]): util.List[Future[T]] = delegate.invokeAll(tasks)
def invokeAll[T](tasks: util.Collection[_ <: Callable[T]], timeout: Long, unit: TimeUnit): util.List[Future[T]] = delegate.invokeAll(tasks, timeout, unit)
def invokeAny[T](tasks: util.Collection[_ <: Callable[T]]): T = delegate.invokeAny(tasks)
def invokeAny[T](tasks: util.Collection[_ <: Callable[T]], timeout: Long, unit: TimeUnit): T = delegate.invokeAny(tasks, timeout, unit)
def execute(command: Runnable) = delegate.execute(command)
}
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