! core: generalize ThreadPoolExecutors metrics

1 files changed, 77 insertions, 0 deletions

diff --git a/kamon-core/src/test/scala/kamon/util/executors/ExecutorServiceMetricsSpec.scala b/kamon-core/src/test/scala/kamon/util/executors/ExecutorServiceMetricsSpec.scala
new file mode 100644
index 00000000..91f3cb71
--- /dev/null
+++ b/kamon-core/src/test/scala/kamon/util/executors/ExecutorServiceMetricsSpec.scala
@@ -0,0 +1,77 @@
+/*
+ * =========================================================================================
+ * 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.util.executors
+
+import java.util.concurrent.Executors
+
+import kamon.Kamon
+import kamon.metric.EntityRecorder
+import kamon.testkit.BaseKamonSpec
+
+class ExecutorServiceMetricsSpec extends BaseKamonSpec("executor-service-metrics-spec") {
+
+  "the ExecutorServiceMetrics" should {
+    "register a SingleThreadPool, collect their metrics and remove it" in {
+      val singleThreadPoolExecutor = Executors.newSingleThreadExecutor()
+      ExecutorServiceMetrics.register("single-thread-pool", singleThreadPoolExecutor)
+      findExecutorRecorder("single-thread-pool") should not be empty
+
+      ExecutorServiceMetrics.remove("single-thread-pool")
+      findExecutorRecorder("single-thread-pool") should be (empty)
+    }
+
+    "register a ThreadPoolExecutor, collect their metrics and remove it" in {
+      val threadPoolExecutor = Executors.newCachedThreadPool()
+      ExecutorServiceMetrics.register("thread-pool-executor", threadPoolExecutor)
+      findExecutorRecorder("thread-pool-executor") should not be empty
+
+      ExecutorServiceMetrics.remove("thread-pool-executor")
+      findExecutorRecorder("thread-pool-executor") should be (empty)
+    }
+
+    "register a ScheduledThreadPoolExecutor, collect their metrics and remove it" in {
+      val scheduledThreadPoolExecutor = Executors.newSingleThreadScheduledExecutor()
+      ExecutorServiceMetrics.register("scheduled-thread-pool-executor", scheduledThreadPoolExecutor)
+      findExecutorRecorder("scheduled-thread-pool-executor") should not be empty
+
+      ExecutorServiceMetrics.remove("scheduled-thread-pool-executor")
+      findExecutorRecorder("scheduled-thread-pool-executor") should be (empty)
+    }
+
+    "register a Java ForkJoinPool, collect their metrics and remove it" in {
+      val javaForkJoinPool = Executors.newWorkStealingPool()
+      ExecutorServiceMetrics.register("java-fork-join-pool", javaForkJoinPool)
+      findExecutorRecorder("java-fork-join-pool") should not be empty
+
+      ExecutorServiceMetrics.remove("java-fork-join-pool")
+      findExecutorRecorder("java-fork-join-pool") should be (empty)
+    }
+
+    "register a Scala ForkJoinPool, collect their metrics and remove it" in {
+      val scalaForkJoinPool = new scala.concurrent.forkjoin.ForkJoinPool()
+      ExecutorServiceMetrics.register("scala-fork-join-pool", scalaForkJoinPool)
+      findExecutorRecorder("scala-fork-join-pool") should not be empty
+
+      ExecutorServiceMetrics.remove("scala-fork-join-pool")
+      findExecutorRecorder("scala-fork-join-pool") should be (empty)
+    }
+
+    def findExecutorRecorder(name: String): Option[EntityRecorder] =
+      Kamon.metrics.find(name, ExecutorServiceMetrics.Category, Map.empty)
+  }
+
+}