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.cassandra.concurrent;
  
  import java.io.IOException;
  import java.util.concurrent.CancellationException;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.ScheduledFuture;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.TimeoutException;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.junit.AfterClass;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.junit.Assert;
  
  import org.apache.cassandra.ServerTestUtils;
  import org.apache.cassandra.service.EmbeddedCassandraService;
  import org.apache.cassandra.service.StorageService;
  
  import static org.apache.cassandra.concurrent.ExecutorFactory.Global.executorFactory;
  
  public class DebuggableScheduledThreadPoolExecutorTest
  {
  
      static EmbeddedCassandraService service;
  
      @BeforeClass
      public static void startup() throws IOException
      {
          service = ServerTestUtils.startEmbeddedCassandraService();
      }
  
      @AfterClass
      public static void tearDown()
      {
          if (service != null)
              service.stop();
      }
  
      @Test
      public void testShutdown() throws ExecutionException, InterruptedException, IOException
      {
          ScheduledExecutorPlus testPool = executorFactory().scheduled("testpool");
  
          final AtomicInteger value = new AtomicInteger(0);
  
          //Normal scheduled task
          ScheduledFuture future = testPool.schedule(new Runnable()
          {
              public void run()
              {
                  value.incrementAndGet();
              }
          }, 1, TimeUnit.SECONDS);
  
          future.get();
          assert value.get() == 1;
  
  
          //Shut down before schedule
          future = testPool.schedule(new Runnable()
          {
              public void run()
              {
                  value.incrementAndGet();
              }
          }, 10, TimeUnit.SECONDS);
  
  
          StorageService.instance.drain();
          testPool.shutdown();
  
          future.get();
          assert value.get() == 2;
  
  
          //Now shut down verify task isn't just swallowed
          future = testPool.schedule(new Runnable()
          {
              public void run()
              {
                  value.incrementAndGet();
              }
          }, 1, TimeUnit.SECONDS);
  
  
          try
          {
              future.get(2, TimeUnit.SECONDS);
              Assert.fail("Task should be cancelled");
          }
          catch (CancellationException e)
          {
  
          }
          catch (TimeoutException e)
          {
              Assert.fail("Task should be cancelled");
          }
  
          assert future.isCancelled();
          assert value.get() == 2;
      }
  }
  