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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, TestKit }
import akka.actor.ActorSystem
import org.scalatest.{ Matchers, WordSpecLike }
import kamon.Kamon
import org.scalatest.concurrent.{ PatienceConfiguration, ScalaFutures }
import spray.http.HttpHeaders.RawHeader
import spray.http.{ HttpResponse, HttpRequest }
import kamon.metrics.{ TraceMetrics, Metrics }
import kamon.metrics.Subscriptions.TickMetricSnapshot
class ServerRequestInstrumentationSpec extends TestKit(ActorSystem("spec")) with WordSpecLike with Matchers with RequestBuilding
with ScalaFutures with PatienceConfiguration with TestServer {
"the spray server request tracing instrumentation" should {
"reply back with the same trace token header provided in the request" in {
val (connection, server) = buildClientConnectionAndServer
val client = TestProbe()
client.send(connection, Get("/").withHeaders(RawHeader("X-Trace-Token", "reply-trace-token")))
server.expectMsgType[HttpRequest]
server.reply(HttpResponse(entity = "ok"))
val response = client.expectMsgType[HttpResponse]
response.headers should contain(RawHeader("X-Trace-Token", "reply-trace-token"))
}
"reply back with a automatically assigned trace token if none was provided with the request" in {
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.filter(_.name == "X-Trace-Token").size should be(1)
}
"open and finish a trace during the lifetime of a request" in {
val (connection, server) = buildClientConnectionAndServer
val client = TestProbe()
val metricListener = TestProbe()
Kamon(Metrics)(system).subscribe(TraceMetrics, "*", metricListener.ref, permanently = true)
client.send(connection, Get("/open-and-finish"))
server.expectMsgType[HttpRequest]
server.reply(HttpResponse(entity = "ok"))
client.expectMsgType[HttpResponse]
metricListener.fishForMessage() {
case snapshot @ TickMetricSnapshot(_, _, metrics) ⇒ metrics.keys.exists(_.name.contains("open-and-finish"))
case other ⇒ false
}
}
}
}
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