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/*
* =========================================================================================
* 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 kamon.trace
import akka.actor.{ Terminated, ActorRef, Actor }
class TraceSubscriptions extends Actor {
import TraceSubscriptions._
var subscribers: List[ActorRef] = Nil
def receive = {
case Subscribe(newSubscriber) ⇒
if (!subscribers.contains(newSubscriber))
subscribers = context.watch(newSubscriber) :: subscribers
case Unsubscribe(leavingSubscriber) ⇒
subscribers = subscribers.filter(_ == leavingSubscriber)
case Terminated(terminatedSubscriber) ⇒
subscribers = subscribers.filter(_ == terminatedSubscriber)
case trace: TraceInfo ⇒
subscribers.foreach(_ ! trace)
}
}
object TraceSubscriptions {
case class Subscribe(subscriber: ActorRef)
case class Unsubscribe(subscriber: ActorRef)
}
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