content: /*
   *
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.bookkeeper.common.util;
  
  import org.apache.bookkeeper.test.TestStatsProvider;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Test OrderedExecutor/Scheduler .
   */
  public class TestOrderedExecutor {
  
      @Test
      public void testOrderExecutorPrometheusMetric() {
          testGenerateMetric(false);
          testGenerateMetric(true);
      }
  
      private void testGenerateMetric(boolean isTraceTaskExecution) {
          TestStatsProvider provider = new TestStatsProvider();
  
          TestStatsProvider.TestStatsLogger rootStatsLogger = provider.getStatsLogger("");
          TestStatsProvider.TestStatsLogger bookieStats =
                  (TestStatsProvider.TestStatsLogger) rootStatsLogger.scope("bookkeeper_server");
  
          OrderedExecutor executor = OrderedExecutor.newBuilder().statsLogger(bookieStats)
                  .name("test").numThreads(1).traceTaskExecution(isTraceTaskExecution).build();
  
          TestStatsProvider.TestStatsLogger testStatsLogger = (TestStatsProvider.TestStatsLogger)
                  bookieStats.scope("thread_test_OrderedExecutor_0_0");
  
          Assert.assertNotNull(testStatsLogger.getGauge("thread_executor_queue").getSample());
          Assert.assertNotNull(testStatsLogger.getGauge("thread_executor_completed").getSample());
          Assert.assertNotNull(testStatsLogger.getGauge("thread_executor_tasks_completed").getSample());
          Assert.assertNotNull(testStatsLogger.getGauge("thread_executor_tasks_rejected").getSample());
          Assert.assertNotNull(testStatsLogger.getGauge("thread_executor_tasks_failed").getSample());
      }
  }
  