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/*
* =========================================================================================
* Copyright © 2013-2016 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.metric
import akka.testkit.ImplicitSender
import com.typesafe.config.ConfigFactory
import kamon.testkit.BaseKamonSpec
import kamon.trace.Tracer
import kamon.metric.instrument.Histogram
import scala.util.control.NoStackTrace
class TraceMetricsSpec extends BaseKamonSpec("trace-metrics-spec") with ImplicitSender {
"the TraceMetrics" should {
"record the elapsed time between a trace creation and finish" in {
for (repetitions ← 1 to 10) {
Tracer.withContext(newContext("record-elapsed-time")) {
Tracer.currentContext.finish()
}
}
val snapshot = takeSnapshotOf("record-elapsed-time", "trace")
snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(10)
}
"record the elapsed time for segments that occur inside a given trace" in {
Tracer.withContext(newContext("trace-with-segments")) {
val segment = Tracer.currentContext.startSegment("test-segment", "test-category", "test-library")
segment.finish()
Tracer.currentContext.finish()
}
val snapshot = takeSnapshotOf("test-segment", "trace-segment",
tags = Map(
"trace" → "trace-with-segments",
"category" → "test-category",
"library" → "test-library"
))
snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1)
}
"record the elapsed time for segments that finish after their correspondent trace has finished" in {
val segment = Tracer.withContext(newContext("closing-segment-after-trace")) {
val s = Tracer.currentContext.startSegment("test-segment", "test-category", "test-library")
Tracer.currentContext.finish()
s
}
val beforeFinishSegmentSnapshot = takeSnapshotOf("closing-segment-after-trace", "trace")
beforeFinishSegmentSnapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1)
intercept[NoSuchElementException] {
// The segment metric should not exist before we it has finished.
takeSnapshotOf("test-segment", "trace-segment",
tags = Map(
"trace" → "closing-segment-after-trace",
"category" → "test-category",
"library" → "test-library"
))
}
segment.finish()
val afterFinishSegmentSnapshot = takeSnapshotOf("test-segment", "trace-segment",
tags = Map(
"trace" → "closing-segment-after-trace",
"category" → "test-category",
"library" → "test-library"
))
afterFinishSegmentSnapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1)
}
"record the elapsed time between a trace creation and finish with an error" in {
for (repetitions ← 1 to 10) {
Tracer.withContext(newContext("record-elapsed-time-with-error")) {
Tracer.currentContext.finishWithError(new RuntimeException("awesome-trace-error") with NoStackTrace)
}
}
val snapshot = takeSnapshotOf("record-elapsed-time-with-error", "trace")
snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(10)
snapshot.counter("errors").get.count should be(10)
}
"record the elapsed time for segments that finish with an error and that occur inside a given trace" in {
Tracer.withContext(newContext("trace-with-segments")) {
val segment = Tracer.currentContext.startSegment("test-segment-with-error", "test-category", "test-library")
segment.finishWithError(new RuntimeException("awesome-segment-error") with NoStackTrace)
Tracer.currentContext.finish()
}
val snapshot = takeSnapshotOf("test-segment-with-error", "trace-segment",
tags = Map(
"trace" → "trace-with-segments",
"category" → "test-category",
"library" → "test-library"
))
snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1)
snapshot.counter("errors").get.count should be(1)
}
}
}
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