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/*
* =========================================================================================
* 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.HdrRecorder
import scala.collection.concurrent.TrieMap
import com.typesafe.config.Config
case class TraceMetrics(name: String) extends MetricGroupIdentity {
val category = TraceMetrics
}
object TraceMetrics extends MetricGroupCategory {
val name = "trace"
case object ElapsedTime extends MetricIdentity { val name, tag = "elapsed-time" }
case class HttpClientRequest(name: String, tag: String) extends MetricIdentity
class TraceMetricRecorder(val elapsedTime: HdrRecorder, private val segmentRecorderFactory: () ⇒ HdrRecorder)
extends MetricGroupRecorder {
private val segments = TrieMap[MetricIdentity, HdrRecorder]()
def segmentRecorder(segmentIdentity: MetricIdentity): HdrRecorder =
segments.getOrElseUpdate(segmentIdentity, segmentRecorderFactory.apply())
def collect: MetricGroupSnapshot = TraceMetricSnapshot(elapsedTime.collect(),
segments.map { case (identity, recorder) ⇒ (identity, recorder.collect()) }.toMap)
}
case class TraceMetricSnapshot(elapsedTime: MetricSnapshotLike, segments: Map[MetricIdentity, MetricSnapshotLike])
extends MetricGroupSnapshot {
def metrics: Map[MetricIdentity, MetricSnapshotLike] = segments + (ElapsedTime -> elapsedTime)
}
val Factory = new MetricGroupFactory {
type GroupRecorder = TraceMetricRecorder
def create(config: Config): TraceMetricRecorder = {
val settings = config.getConfig("precision.trace")
val elapsedTimeConfig = extractPrecisionConfig(settings.getConfig("elapsed-time"))
val segmentConfig = extractPrecisionConfig(settings.getConfig("segment"))
new TraceMetricRecorder(
HdrRecorder(elapsedTimeConfig.highestTrackableValue, elapsedTimeConfig.significantValueDigits, Scale.Nano),
() ⇒ HdrRecorder(segmentConfig.highestTrackableValue, segmentConfig.significantValueDigits, Scale.Nano))
}
}
}
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