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package akka
import actor.{Props, Actor, ActorSystemImpl}
import scala.concurrent.forkjoin.ForkJoinPool
import scala.concurrent.duration._
import com.newrelic.api.agent.NewRelic
import akka.dispatch.Mailbox
import scala._
object Tracer {
protected[this] var mailboxes:List[Mailbox] = List.empty
protected[this] var tracerActorSystem: ActorSystemImpl = _
protected[this] var forkJoinPool:ForkJoinPool = _
def collectPool(pool: ForkJoinPool) = forkJoinPool = pool
def collectActorSystem(actorSystem: ActorSystemImpl) = tracerActorSystem = actorSystem
def collectMailbox(mb: akka.dispatch.Mailbox) = mailboxes ::= mb
def start():Unit ={
implicit val dispatcher = tracerActorSystem.dispatcher
val metricsActor = tracerActorSystem.actorOf(Props[MetricsActor], "MetricsActor")
tracerActorSystem.scheduler.schedule(10 seconds, 6 second, metricsActor, PoolMetrics(forkJoinPool))
tracerActorSystem.scheduler.schedule(10 seconds, 6 second, metricsActor, MailboxMetrics(mailboxes))
}
}
case class PoolMetrics(poolName:String, data:Map[String,Int])
case class MailboxMetrics(mailboxes:Map[String,Mailbox])
object PoolMetrics {
def apply(pool: ForkJoinPool) = new PoolMetrics(pool.getClass.getSimpleName, toMap(pool))
def toMap(pool: scala.concurrent.forkjoin.ForkJoinPool):Map[String,Int] = Map[String,Int](
"ActiveThreadCount" -> pool.getActiveThreadCount,
"Parallelism" -> pool.getParallelism,
"PoolSize" -> pool.getPoolSize,
"QueuedSubmissionCount" -> pool.getQueuedSubmissionCount,
"StealCount" -> pool.getStealCount.toInt,
"QueuedTaskCount" -> pool.getQueuedTaskCount.toInt,
"RunningThreadCount" -> pool.getRunningThreadCount
)
}
object MailboxMetrics {
def apply(mailboxes: List[Mailbox]) = {
new MailboxMetrics(mailboxes.take(mailboxes.length - 1).map{m => (m.actor.self.path.toString -> m)}.toMap) //TODO:reseach why collect an ActorSystemImpl
}
}
class MetricsActor extends Actor {
def receive = {
case poolMetrics:PoolMetrics => {
println(poolMetrics)
poolMetrics.data.map{case(k,v) => NewRelic.recordMetric(s"${poolMetrics.poolName}:${k}",v)}
}
case mailboxMetrics:MailboxMetrics => {
mailboxMetrics.mailboxes.map { case(actorName,mb) =>
println(s"Sending metrics to Newrelic MailBoxMonitor -> ${actorName}")
NewRelic.recordMetric(s"${actorName}:Mailbox:NumberOfMessages",mb.numberOfMessages)
NewRelic.recordMetric(s"${actorName}:Mailbox:MailboxDispatcherThroughput",mb.dispatcher.throughput)
NewRelic.addCustomParameter(s"${actorName}:Mailbox:Status", mb.hasMessages.toString)
NewRelic.addCustomParameter(s"${actorName}:Mailbox:HasMessages", mb.hasMessages.toString)
}
}
}
}
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