1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/* ===================================================
* Copyright © 2013-2015 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 {
System.setProperty("config.file", "./kamon-play-2.4.x/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")
}
}
}
|
