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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.metric
import com.typesafe.config.ConfigFactory
import kamon.Kamon
import kamon.metric.instrument.Histogram
import kamon.metric.instrument.Histogram.MutableRecord
import org.scalatest.{ Matchers, WordSpecLike }
import akka.testkit.{ ImplicitSender, TestKitBase }
import akka.actor.ActorSystem
import scala.concurrent.duration._
import kamon.metric.Subscriptions.TickMetricSnapshot
class TickMetricSnapshotBufferSpec extends TestKitBase with WordSpecLike with Matchers with ImplicitSender {
implicit lazy val system: ActorSystem = ActorSystem("trace-metrics-spec", ConfigFactory.parseString(
"""
|kamon.metrics {
| tick-interval = 1 hour
| filters = [
| {
| trace {
| includes = [ "*" ]
| excludes = [ "non-tracked-trace"]
| }
| }
| ]
|}
""".stripMargin))
"the TickMetricSnapshotBuffer" should {
"merge TickMetricSnapshots received until the flush timeout is reached and fix the from/to fields" in new SnapshotFixtures {
val buffer = system.actorOf(TickMetricSnapshotBuffer.props(3 seconds, testActor))
buffer ! firstEmpty
buffer ! secondEmpty
buffer ! thirdEmpty
within(2 seconds)(expectNoMsg())
val mergedSnapshot = expectMsgType[TickMetricSnapshot]
mergedSnapshot.from should equal(1000)
mergedSnapshot.to should equal(4000)
mergedSnapshot.metrics should be('empty)
}
"merge empty and non-empty snapshots" in new SnapshotFixtures {
val buffer = system.actorOf(TickMetricSnapshotBuffer.props(3 seconds, testActor))
buffer ! firstNonEmpty
buffer ! secondNonEmpty
buffer ! thirdEmpty
within(2 seconds)(expectNoMsg())
val mergedSnapshot = expectMsgType[TickMetricSnapshot]
mergedSnapshot.from should equal(1000)
mergedSnapshot.to should equal(4000)
mergedSnapshot.metrics should not be ('empty)
val testMetricSnapshot = mergedSnapshot.metrics(testTraceIdentity).metrics(TraceMetrics.ElapsedTime).asInstanceOf[Histogram.Snapshot]
testMetricSnapshot.min should equal(10)
testMetricSnapshot.max should equal(300)
testMetricSnapshot.numberOfMeasurements should equal(6)
testMetricSnapshot.recordsIterator.toStream should contain allOf (
MutableRecord(10, 3),
MutableRecord(20, 1),
MutableRecord(30, 1),
MutableRecord(300, 1))
}
}
trait SnapshotFixtures {
val collectionContext = CollectionContext.default
val testTraceIdentity = TraceMetrics("buffer-spec-test-trace")
val traceRecorder = Kamon(Metrics).register(testTraceIdentity, TraceMetrics.Factory).get
val firstEmpty = TickMetricSnapshot(1000, 2000, Map.empty)
val secondEmpty = TickMetricSnapshot(2000, 3000, Map.empty)
val thirdEmpty = TickMetricSnapshot(3000, 4000, Map.empty)
traceRecorder.elapsedTime.record(10L)
traceRecorder.elapsedTime.record(20L)
traceRecorder.elapsedTime.record(30L)
val firstNonEmpty = TickMetricSnapshot(1000, 2000, Map(
(testTraceIdentity -> traceRecorder.collect(collectionContext))))
traceRecorder.elapsedTime.record(10L)
traceRecorder.elapsedTime.record(10L)
traceRecorder.elapsedTime.record(300L)
val secondNonEmpty = TickMetricSnapshot(1000, 2000, Map(
(testTraceIdentity -> traceRecorder.collect(collectionContext))))
}
}
|
