From cabcd24b92d2ccbb82c24fbf658b2390d6e9cf89 Mon Sep 17 00:00:00 2001
From: Diego <diegolparra@gmail.com>
Date: Sun, 19 Oct 2014 23:17:19 -0300
Subject: = kamon-newrelic: minor refactor when merge metrics

---
 .../src/main/scala/kamon/logreporter/LogReporter.scala           | 2 +-
 .../src/main/scala/kamon/newrelic/AgentJsonProtocol.scala        | 2 +-
 .../src/main/scala/kamon/newrelic/MetricTranslator.scala         | 9 ++++++---
 kamon-newrelic/src/test/scala/kamon/newrelic/AgentSpec.scala     | 2 +-
 4 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/kamon-log-reporter/src/main/scala/kamon/logreporter/LogReporter.scala b/kamon-log-reporter/src/main/scala/kamon/logreporter/LogReporter.scala
index 05841c14..41ecb757 100644
--- a/kamon-log-reporter/src/main/scala/kamon/logreporter/LogReporter.scala
+++ b/kamon-log-reporter/src/main/scala/kamon/logreporter/LogReporter.scala
@@ -311,7 +311,7 @@ object LogReporterSubscriber {
 
   implicit class RichHistogramSnapshot(histogram: Histogram.Snapshot) {
     def average: Double = {
-      if(histogram.numberOfMeasurements == 0) 0D
+      if (histogram.numberOfMeasurements == 0) 0D
       else histogram.sum / histogram.numberOfMeasurements
     }
   }
diff --git a/kamon-newrelic/src/main/scala/kamon/newrelic/AgentJsonProtocol.scala b/kamon-newrelic/src/main/scala/kamon/newrelic/AgentJsonProtocol.scala
index ecb8ff09..9b3e6dea 100644
--- a/kamon-newrelic/src/main/scala/kamon/newrelic/AgentJsonProtocol.scala
+++ b/kamon-newrelic/src/main/scala/kamon/newrelic/AgentJsonProtocol.scala
@@ -58,6 +58,6 @@ object AgentJsonProtocol extends DefaultJsonProtocol {
         JsNumber(obj.runId),
         JsNumber(obj.timeSliceMetrics.from),
         JsNumber(obj.timeSliceMetrics.to),
-        obj.timeSliceMetrics.metrics.toJson)
+        obj.timeSliceMetrics.metrics.values.toSeq.toJson)
   }
 }
diff --git a/kamon-newrelic/src/main/scala/kamon/newrelic/MetricTranslator.scala b/kamon-newrelic/src/main/scala/kamon/newrelic/MetricTranslator.scala
index 6313a2aa..5fa571e1 100644
--- a/kamon-newrelic/src/main/scala/kamon/newrelic/MetricTranslator.scala
+++ b/kamon-newrelic/src/main/scala/kamon/newrelic/MetricTranslator.scala
@@ -28,16 +28,19 @@ class MetricTranslator(receiver: ActorRef) extends Actor
       val fromInSeconds = (from / 1E3).toInt
       val toInSeconds = (to / 1E3).toInt
       val allMetrics = collectWebTransactionMetrics(metrics) ++ collectCustomMetrics(metrics)
+      val groupedMetrics: Map[String, NewRelic.Metric] = allMetrics.map(metric ⇒ metric.name -> metric)(collection.breakOut) // avoid intermediate tuple
 
-      receiver ! TimeSliceMetrics(fromInSeconds, toInSeconds, allMetrics)
+      receiver ! TimeSliceMetrics(fromInSeconds, toInSeconds, groupedMetrics)
   }
 
 }
 
 object MetricTranslator {
-  case class TimeSliceMetrics(from: Long, to: Long, metrics: Seq[NewRelic.Metric]) {
+  case class TimeSliceMetrics(from: Long, to: Long, metrics: Map[String, NewRelic.Metric]) {
+    import kamon.metric._
+
     def merge(thatMetrics: Option[TimeSliceMetrics]): TimeSliceMetrics = {
-      thatMetrics.map(that ⇒ TimeSliceMetrics(from + that.from, to + that.to, metrics ++ that.metrics)).getOrElse(this)
+      thatMetrics.map(that ⇒ TimeSliceMetrics(from + that.from, to + that.to, combineMaps(metrics, that.metrics)((l, r) ⇒ l.merge(r)))).getOrElse(this)
     }
   }
 
diff --git a/kamon-newrelic/src/test/scala/kamon/newrelic/AgentSpec.scala b/kamon-newrelic/src/test/scala/kamon/newrelic/AgentSpec.scala
index a3785d17..8b61c241 100644
--- a/kamon-newrelic/src/test/scala/kamon/newrelic/AgentSpec.scala
+++ b/kamon-newrelic/src/test/scala/kamon/newrelic/AgentSpec.scala
@@ -152,7 +152,7 @@ class AgentSpec extends TestKitBase with WordSpecLike with BeforeAndAfterAll {
 
 object AgentSpec {
   def sendDelayedMetric(agent: ActorRef, delay: Int = 1000): Unit = {
-    agent ! TimeSliceMetrics(100000L, 200000L, Seq(NewRelic.Metric("Latency", None, 1000L, 2000D, 3000D, 1D, 100000D, 300D)))
+    agent ! TimeSliceMetrics(100000L, 200000L, Map("Latency" -> NewRelic.Metric("Latency", None, 1000L, 2000D, 3000D, 1D, 100000D, 300D)))
     Thread.sleep(delay)
   }
 }
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