1 files changed, 65 insertions, 0 deletions
diff --git a/kamon-statsd/src/main/scala/kamon/statsd/StatsDMetricsSender.scala b/kamon-statsd/src/main/scala/kamon/statsd/StatsDMetricsSender.scala
new file mode 100644
index 00000000..b14e6022
--- /dev/null
+++ b/kamon-statsd/src/main/scala/kamon/statsd/StatsDMetricsSender.scala
@@ -0,0 +1,65 @@
+/*
+ * =========================================================================================
+ * 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
+import kamon.Kamon
+import scala.annotation.tailrec
+
+class StatsDMetricsSender extends Actor with ActorLogging {
+  import context.system
+
+  val statsDExtension = Kamon(StatsD)
+  val remote = new InetSocketAddress(statsDExtension.hostname, statsDExtension.port)
+  val maxPacketSize = 1024
+
+  IO(Udp) ! Udp.SimpleSender
+
+  def receive = {
+    case Udp.SimpleSenderReady ⇒
+      context.become(ready(sender))
+  }
+
+  def ready(udpSender: ActorRef): Receive = {
+    case StatsD.MetricBatch(metrics) ⇒ writeDown(metrics, ByteString.empty, udpSender)
+  }
+
+
+  def flushToRemote(data: ByteString, udpSender: ActorRef): Unit =  udpSender ! Udp.Send(data, remote)
+
+  @tailrec final def writeDown(metrics: Iterable[StatsD.Metric], buffer: ByteString, udpSender: ActorRef): Unit = {
+    if(metrics.isEmpty)
+      flushToRemote(buffer, udpSender)
+    else {
+      val headData = metrics.head.toByteString
+      if(buffer.size + headData.size > maxPacketSize) {
+        flushToRemote(buffer, udpSender)
+        writeDown(metrics.tail, headData, udpSender)
+      } else {
+        writeDown(metrics.tail, buffer ++ headData, udpSender)
+      }
+
+    }
+  }
+}
+
+object StatsDMetricsSender {
+  def props: Props = Props[StatsDMetricsSender]
+}
+\ No newline at end of file