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/* ===================================================
* Copyright © 2013 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.newrelic
import akka.actor._
import scala.concurrent.duration._
import kamon.Kamon
import kamon.metric.{ UserMetrics, TickMetricSnapshotBuffer, TraceMetrics, Metrics }
import kamon.metric.Subscriptions.TickMetricSnapshot
import akka.actor
import java.util.concurrent.TimeUnit.MILLISECONDS
class NewRelicExtension(system: ExtendedActorSystem) extends Kamon.Extension {
val config = system.settings.config.getConfig("kamon.newrelic")
val metricsListener = system.actorOf(Props[NewRelicMetricsListener], "kamon-newrelic")
val apdexT: Double = config.getDuration("apdexT", MILLISECONDS) / 1E3 // scale to seconds.
Kamon(Metrics)(system).subscribe(TraceMetrics, "*", metricsListener, permanently = true)
//Kamon(Metrics)(system).subscribe(UserMetrics, "*", metricsListener, permanently = true)
}
class NewRelicMetricsListener extends Actor with ActorLogging {
log.info("Starting the Kamon(NewRelic) extension")
val agent = context.actorOf(Props[Agent], "agent")
val translator = context.actorOf(MetricTranslator.props(agent), "translator")
val buffer = context.actorOf(TickMetricSnapshotBuffer.props(1 minute, translator), "metric-buffer")
def receive = {
case tick: TickMetricSnapshot ⇒ buffer.forward(tick)
}
}
object NewRelic extends ExtensionId[NewRelicExtension] with ExtensionIdProvider {
def lookup(): ExtensionId[_ <: actor.Extension] = NewRelic
def createExtension(system: ExtendedActorSystem): NewRelicExtension = new NewRelicExtension(system)
case class Metric(name: String, scope: Option[String], callCount: Long, total: Double, totalExclusive: Double,
min: Double, max: Double, sumOfSquares: Double) {
def merge(that: Metric): Metric = {
Metric(name, scope,
callCount + that.callCount,
total + that.total,
totalExclusive + that.totalExclusive,
math.min(min, that.min),
math.max(max, that.max),
sumOfSquares + that.sumOfSquares)
}
}
}
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