1 files changed, 122 insertions, 0 deletions
diff --git a/kamon-play/src/test/scala/kamon/play/LoggerLikeInstrumentationSpec.scala b/kamon-play/src/test/scala/kamon/play/LoggerLikeInstrumentationSpec.scala
new file mode 100644
index 00000000..c41f7004
--- /dev/null
+++ b/kamon-play/src/test/scala/kamon/play/LoggerLikeInstrumentationSpec.scala
@@ -0,0 +1,122 @@
+/* =========================================================================================
+ * 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 ch.qos.logback.classic.spi.ILoggingEvent
+import ch.qos.logback.classic.{ AsyncAppender, LoggerContext }
+import ch.qos.logback.core.read.ListAppender
+import ch.qos.logback.core.status.NopStatusListener
+import kamon.trace.TraceLocal
+import org.scalatest.BeforeAndAfter
+import org.scalatestplus.play._
+import org.slf4j
+import play.api.LoggerLike
+import play.api.mvc.Results.Ok
+import play.api.mvc._
+import play.api.test.Helpers._
+import play.api.test._
+
+import scala.concurrent.Future
+
+class LoggerLikeInstrumentationSpec extends PlaySpec with OneServerPerSuite with BeforeAndAfter {
+
+  System.setProperty("config.file", "./kamon-play/src/test/resources/conf/application.conf")
+
+  val executor = scala.concurrent.ExecutionContext.Implicits.global
+
+  val infoMessage = "Info Message"
+  val headerValue = "My header value"
+  val otherValue = "My other value"
+
+  case class LocalStorageValue(header: String, other: String)
+
+  object TraceLocalKey extends TraceLocal.TraceLocalKey {
+    type ValueType = LocalStorageValue
+  }
+
+  before {
+    LoggingHandler.startLogging()
+  }
+
+  after {
+    LoggingHandler.stopLogging()
+  }
+
+  implicit override lazy val app = FakeApplication(withRoutes = {
+
+    case ("GET", "/logging") ⇒
+      Action.async {
+        Future {
+          TraceLocal.store(TraceLocalKey)(LocalStorageValue(headerValue, otherValue))
+          LoggingHandler.info(infoMessage)
+          Ok("OK")
+        }(executor)
+      }
+  })
+
+  "the LoggerLike instrumentation" should {
+    "be put the properties of TraceLocal into the MDC as key -> value in a request" in {
+      LoggingHandler.appenderStart()
+
+      val Some(result) = route(FakeRequest(GET, "/logging"))
+      Thread.sleep(500) // wait to complete the future
+      TraceLocal.retrieve(TraceLocalKey) must be(Some(LocalStorageValue(headerValue, otherValue)))
+
+      LoggingHandler.appenderStop()
+
+      headerValue must be(LoggingHandler.getValueFromMDC("header"))
+      otherValue must be(LoggingHandler.getValueFromMDC("other"))
+    }
+  }
+}
+
+object LoggingHandler extends LoggerLike {
+
+  val loggerContext = new LoggerContext()
+  val rootLogger = loggerContext.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME)
+  val asyncAppender = new AsyncAppender()
+  val listAppender = new ListAppender[ILoggingEvent]()
+  val nopStatusListener = new NopStatusListener()
+
+  override val logger: slf4j.Logger = rootLogger
+
+  def startLogging(): Unit = {
+    loggerContext.getStatusManager().add(nopStatusListener)
+    asyncAppender.setContext(loggerContext)
+    listAppender.setContext(loggerContext)
+    listAppender.setName("list")
+    listAppender.start()
+  }
+
+  def stopLogging(): Unit = {
+    listAppender.stop()
+  }
+
+  def appenderStart(): Unit = {
+    asyncAppender.addAppender(listAppender)
+    asyncAppender.start()
+    rootLogger.addAppender(asyncAppender)
+  }
+
+  def appenderStop(): Unit = {
+    asyncAppender.stop()
+  }
+
+  def getValueFromMDC(key: String): String = {
+    listAppender.list.get(0).getMDCPropertyMap.get(key)
+  }
+}
+