From 9c0db0e0f85b17a7686429176f63ad92ab37f59a Mon Sep 17 00:00:00 2001
From: Ivan Topolnjak <ivantopo@gmail.com>
Date: Mon, 4 Aug 2014 22:07:38 -0300
Subject: + statsd: subscribe to user metrics

---
 kamon-statsd/src/main/scala/kamon/statsd/StatsD.scala | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'kamon-statsd/src/main/scala')

diff --git a/kamon-statsd/src/main/scala/kamon/statsd/StatsD.scala b/kamon-statsd/src/main/scala/kamon/statsd/StatsD.scala
index e9350fae..ff273d9f 100644
--- a/kamon-statsd/src/main/scala/kamon/statsd/StatsD.scala
+++ b/kamon-statsd/src/main/scala/kamon/statsd/StatsD.scala
@@ -18,6 +18,7 @@ package kamon.statsd
 
 import akka.actor._
 import kamon.Kamon
+import kamon.metric.UserMetrics._
 import kamon.metric._
 import kamon.metrics._
 import scala.concurrent.duration._
@@ -52,6 +53,12 @@ class StatsDExtension(system: ExtendedActorSystem) extends Kamon.Extension {
 
   val statsDMetricsListener = buildMetricsListener(tickInterval, flushInterval)
 
+  // Subscribe to all user metrics
+  Kamon(Metrics)(system).subscribe(UserHistograms, "*", statsDMetricsListener, permanently = true)
+  Kamon(Metrics)(system).subscribe(UserCounters, "*", statsDMetricsListener, permanently = true)
+  Kamon(Metrics)(system).subscribe(UserMinMaxCounters, "*", statsDMetricsListener, permanently = true)
+  Kamon(Metrics)(system).subscribe(UserGauges, "*", statsDMetricsListener, permanently = true)
+
   // Subscribe to Actors
   val includedActors = statsDConfig.getStringList("includes.actor").asScala
   for (actorPathPattern ← includedActors) {
@@ -107,7 +114,16 @@ class SimpleMetricKeyGenerator(config: Config) extends StatsD.MetricKeyGenerator
 
   def generateKey(groupIdentity: MetricGroupIdentity, metricIdentity: MetricIdentity): String = {
     val normalizedGroupName = groupIdentity.name.replace(": ", "-").replace(" ", "_").replace("/", "_")
-    s"${application}.${normalizedLocalhostName}.${groupIdentity.category.name}.${normalizedGroupName}.${metricIdentity.name}"
+
+    if (isUserMetric(groupIdentity))
+      s"${application}.${normalizedLocalhostName}.${groupIdentity.category.name}.${normalizedGroupName}"
+    else
+      s"${application}.${normalizedLocalhostName}.${groupIdentity.category.name}.${normalizedGroupName}.${metricIdentity.name}"
+  }
+
+  def isUserMetric(groupIdentity: MetricGroupIdentity): Boolean = groupIdentity match {
+    case someUserMetric: UserMetricGroup ⇒ true
+    case everythingElse                  ⇒ false
   }
 }
 
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