/*
* =========================================================================================
* 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.statsd
import akka.actor._
import kamon.Kamon
import kamon.metrics.Subscriptions.TickMetricSnapshot
import kamon.metrics.{ TickMetricSnapshotBuffer, CustomMetric, TraceMetrics, Metrics }
import scala.concurrent.duration._
object Statsd extends ExtensionId[StatsdExtension] with ExtensionIdProvider {
override def lookup(): ExtensionId[_ <: Extension] = Statsd
override def createExtension(system: ExtendedActorSystem): StatsdExtension = new StatsdExtension(system)
}
class StatsdExtension(private val system: ExtendedActorSystem) extends Kamon.Extension {
private val config = system.settings.config.getConfig("kamon.statsd")
val hostname = config.getString("hostname")
val port = config.getInt("port")
val prefix = config.getString("prefix")
val statsdMetricsListener = system.actorOf(Props(new StatsdMetricsListener(hostname, port, prefix)), "kamon-statsd-metrics-listener")
Kamon(Metrics)(system).subscribe(TraceMetrics, "*", statsdMetricsListener, permanently = true)
Kamon(Metrics)(system).subscribe(CustomMetric, "*", statsdMetricsListener, permanently = true)
}
class StatsdMetricsListener(host: String, port: Int, prefix: String) extends Actor with ActorLogging {
import java.net.{ InetAddress, InetSocketAddress }
log.info("Starting the Kamon(Statsd) extension")
val statsdActor = context.actorOf(StatsdMetricsSender.props(prefix, new InetSocketAddress(InetAddress.getByName(host), port)), "statsd-metrics-sender")
val translator = context.actorOf(StatsdMetricTranslator.props(statsdActor), "statsd-metrics-translator")
val buffer = context.actorOf(TickMetricSnapshotBuffer.props(1 minute, translator), "statsd-metrics-buffer")
def receive = {
case tick: TickMetricSnapshot ⇒ buffer.forward(tick)
}
}
