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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.spray
import _root_.spray.httpx.RequestBuilding
import akka.testkit.TestProbe
import kamon.testkit.BaseKamonSpec
import kamon.Kamon
import org.scalatest.concurrent.{ PatienceConfiguration, ScalaFutures }
import spray.http.HttpHeaders.RawHeader
import spray.http.{ HttpResponse, HttpRequest }
class SprayServerTracingSpec extends BaseKamonSpec("spray-server-tracing-spec") with RequestBuilding with ScalaFutures
with PatienceConfiguration with TestServer {
"the spray server request tracing instrumentation" should {
"include the trace-token header in responses when the automatic-trace-token-propagation is enabled" in {
enableAutomaticTraceTokenPropagation()
val (connection, server) = buildClientConnectionAndServer
val client = TestProbe()
client.send(connection, Get("/").withHeaders(traceTokenHeader("propagation-enabled")))
server.expectMsgType[HttpRequest]
server.reply(HttpResponse(entity = "ok"))
val response = client.expectMsgType[HttpResponse]
response.headers should contain(traceTokenHeader("propagation-enabled"))
}
"reply back with an automatically assigned trace token if none was provided with the request and automatic-trace-token-propagation is enabled" in {
enableAutomaticTraceTokenPropagation()
val (connection, server) = buildClientConnectionAndServer
val client = TestProbe()
client.send(connection, Get("/"))
server.expectMsgType[HttpRequest]
server.reply(HttpResponse(entity = "ok"))
val response = client.expectMsgType[HttpResponse]
response.headers.count(_.name == Kamon(Spray).settings.traceTokenHeaderName) should be(1)
}
"not include the trace-token header in responses when the automatic-trace-token-propagation is disabled" in {
disableAutomaticTraceTokenPropagation()
val (connection, server) = buildClientConnectionAndServer
val client = TestProbe()
client.send(connection, Get("/").withHeaders(traceTokenHeader("propagation-disabled")))
server.expectMsgType[HttpRequest]
server.reply(HttpResponse(entity = "ok"))
val response = client.expectMsgType[HttpResponse]
response.headers should not contain traceTokenHeader("propagation-disabled")
}
}
def traceTokenHeader(token: String): RawHeader =
RawHeader(Kamon(Spray).settings.traceTokenHeaderName, token)
def enableAutomaticTraceTokenPropagation(): Unit = setIncludeTraceToken(true)
def disableAutomaticTraceTokenPropagation(): Unit = setIncludeTraceToken(false)
def setIncludeTraceToken(include: Boolean): Unit = {
val target = Kamon(Spray)(system).settings
val field = target.getClass.getDeclaredField("includeTraceTokenHeader")
field.setAccessible(true)
field.set(target, include)
}
}
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