wip

1 files changed, 65 insertions, 0 deletions

diff --git a/kamon-core/src/main/scala/kamon/metrics/TraceMetrics.scala b/kamon-core/src/main/scala/kamon/metrics/TraceMetrics.scala
new file mode 100644
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--- /dev/null
+++ b/kamon-core/src/main/scala/kamon/metrics/TraceMetrics.scala
@@ -0,0 +1,65 @@
+/*
+ * =========================================================================================
+ * 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.metrics
+
+import org.HdrHistogram.HighDynamicRangeRecorder
+import scala.collection.concurrent.TrieMap
+import com.typesafe.config.Config
+
+object TraceMetrics extends MetricGroupIdentity.Category with MetricGroupFactory {
+  type GroupRecorder = TraceMetricRecorder
+  val entityName = "trace"
+
+  case object ElapsedTime extends MetricIdentity {
+    val name = "ElapsedTime"
+  }
+
+  case class HttpClientRequest(name: String) extends MetricIdentity
+
+  class TraceMetricRecorder(val elapsedTime: HighDynamicRangeRecorder, private val segmentRecorderFactory: () ⇒ HighDynamicRangeRecorder)
+      extends MetricGroupRecorder {
+
+    private val segments = TrieMap[MetricIdentity, HighDynamicRangeRecorder]()
+
+    def record(identity: MetricIdentity, value: Long): Unit = identity match {
+      case ElapsedTime        ⇒ elapsedTime.record(value)
+      case id: MetricIdentity ⇒ segments.getOrElseUpdate(id, segmentRecorderFactory.apply()).record(value)
+    }
+
+    def collect: MetricGroupSnapshot = TraceMetricSnapshot(elapsedTime.collect(),
+      segments.map { case (identity, recorder) ⇒ (identity, recorder.collect()) }.toMap)
+  }
+
+  case class TraceMetricSnapshot(elapsedTime: MetricSnapshot, segments: Map[MetricIdentity, MetricSnapshot])
+      extends MetricGroupSnapshot {
+
+    def metrics: Map[MetricIdentity, MetricSnapshot] = segments + (ElapsedTime -> elapsedTime)
+  }
+
+  def create(config: Config): TraceMetricRecorder = {
+    import HighDynamicRangeRecorder.Configuration
+
+    val settings = config.getConfig("kamon.metrics.precision.trace")
+    val elapsedTimeHdrConfig = Configuration.fromConfig(settings.getConfig("elapsed-time"))
+    val segmentHdrConfig = Configuration.fromConfig(settings.getConfig("segment"))
+
+    new TraceMetricRecorder(
+      HighDynamicRangeRecorder(elapsedTimeHdrConfig),
+      () ⇒ HighDynamicRangeRecorder(segmentHdrConfig))
+  }
+
+}