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Diffstat (limited to 'kamon-play-2.4.x/src/test/scala/kamon/play/WSInstrumentationSpec.scala')
-rw-r--r-- | kamon-play-2.4.x/src/test/scala/kamon/play/WSInstrumentationSpec.scala | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/kamon-play-2.4.x/src/test/scala/kamon/play/WSInstrumentationSpec.scala b/kamon-play-2.4.x/src/test/scala/kamon/play/WSInstrumentationSpec.scala new file mode 100644 index 00000000..fe16ccbf --- /dev/null +++ b/kamon-play-2.4.x/src/test/scala/kamon/play/WSInstrumentationSpec.scala @@ -0,0 +1,98 @@ +/* =================================================== + * Copyright © 2013-2014 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.play + +import kamon.Kamon +import kamon.metric.{ Entity, EntitySnapshot, TraceMetrics } +import kamon.trace.{ Tracer, TraceContext, SegmentCategory } +import org.scalatest.{ Matchers, WordSpecLike } +import org.scalatestplus.play.OneServerPerSuite +import play.api.libs.ws.WS +import play.api.mvc.Action +import play.api.mvc.Results.Ok +import play.api.test.Helpers._ +import play.api.test._ + +import scala.concurrent.Await +import scala.concurrent.duration._ + +class WSInstrumentationSpec extends WordSpecLike with Matchers with OneServerPerSuite { + Kamon.start() + + System.setProperty("config.file", "./kamon-play/src/test/resources/conf/application.conf") + + override lazy val port: Port = 19003 + implicit override lazy val app = FakeApplication(withRoutes = { + case ("GET", "/async") ⇒ Action { Ok("ok") } + case ("GET", "/outside") ⇒ Action { Ok("ok") } + case ("GET", "/inside") ⇒ callWSinsideController(s"http://localhost:$port/async") + }) + + "the WS instrumentation" should { + "propagate the TraceContext inside an Action and complete the WS request" in { + Await.result(route(FakeRequest(GET, "/inside")).get, 10 seconds) + + val snapshot = takeSnapshotOf("GET: /inside", "trace") + snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1) + + val segmentMetricsSnapshot = takeSnapshotOf(s"http://localhost:$port/async", "trace-segment", + tags = Map( + "trace" -> "GET: /inside", + "category" -> SegmentCategory.HttpClient, + "library" -> Play.SegmentLibraryName)) + + segmentMetricsSnapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1) + } + + "propagate the TraceContext outside an Action and complete the WS request" in { + Tracer.withContext(newContext("trace-outside-action")) { + Await.result(WS.url(s"http://localhost:$port/outside").get(), 10 seconds) + Tracer.currentContext.finish() + } + + val snapshot = takeSnapshotOf("trace-outside-action", "trace") + snapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1) + + val segmentMetricsSnapshot = takeSnapshotOf(s"http://localhost:$port/outside", "trace-segment", + tags = Map( + "trace" -> "trace-outside-action", + "category" -> SegmentCategory.HttpClient, + "library" -> Play.SegmentLibraryName)) + + segmentMetricsSnapshot.histogram("elapsed-time").get.numberOfMeasurements should be(1) + } + } + + lazy val collectionContext = Kamon.metrics.buildDefaultCollectionContext + + def newContext(name: String): TraceContext = + Kamon.tracer.newContext(name) + + def takeSnapshotOf(name: String, category: String, tags: Map[String, String] = Map.empty): EntitySnapshot = { + val recorder = Kamon.metrics.find(Entity(name, category, tags)).get + recorder.collect(collectionContext) + } + + def callWSinsideController(url: String) = Action.async { + import play.api.Play.current + import play.api.libs.concurrent.Execution.Implicits.defaultContext + + WS.url(url).get().map { response ⇒ + Ok("Ok") + } + } +}
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