/*
 * =========================================================================================
 * 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.{ ActorLogging, Props, ActorRef, Actor }
import akka.io.{ Udp, IO }
import java.net.InetSocketAddress
import akka.util.ByteString

class StatsdMetricsSender(statPrefix: String, remote: InetSocketAddress) extends Actor with ActorLogging {
  import context.system

  IO(Udp) ! Udp.SimpleSender

  def receive = {
    case Udp.SimpleSenderReady ⇒
      context.become(ready(sender))
  }

  def ready(send: ActorRef): Receive = {
    // TODO: batch writes
    case metric: StatsD.Metric ⇒
      send ! Udp.Send(metric.toByteString, remote)

    case _ ⇒ log.error("Unknown Metric")
  }
}

object StatsdMetricsSender {
  def props(statPrefix: String, remote: InetSocketAddress): Props = Props(new StatsdMetricsSender(statPrefix, remote))
}