content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.client.fs;
  
  import static org.junit.Assert.assertTrue;
  
  import alluxio.TestLoggerRule;
  import alluxio.client.block.stream.BlockWorkerClient;
  import alluxio.client.file.FileSystemContext;
  import alluxio.conf.Configuration;
  import alluxio.resource.CloseableResource;
  import alluxio.security.user.TestUserState;
  import alluxio.testutils.BaseIntegrationTest;
  import alluxio.testutils.LocalAlluxioClusterResource;
  import alluxio.wire.WorkerNetAddress;
  
  import io.netty.util.ResourceLeakDetector;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Ignore;
  import org.junit.Rule;
  import org.junit.Test;
  
  import java.util.concurrent.ThreadLocalRandom;
  
  public final class BlockWorkerClientCloseIntegrationTest extends BaseIntegrationTest {
    @Rule
    public LocalAlluxioClusterResource mClusterResource =
        new LocalAlluxioClusterResource.Builder().build();
  
    @Rule
    public TestLoggerRule mLogger = new TestLoggerRule();
  
    private WorkerNetAddress mWorkerNetAddress;
    private FileSystemContext mFsContext;
  
    @Before
    public void before() throws Exception {
      mWorkerNetAddress = mClusterResource.get().getWorkerAddress();
      mFsContext = FileSystemContext
          .create(new TestUserState("test", Configuration.global()).getSubject(),
              Configuration.global());
    }
  
    @After
    public void after() throws Exception {
      mFsContext.close();
    }
  
    @Test
    public void close() throws Exception {
      for (int i = 0; i < 1000; i++) {
        CloseableResource<BlockWorkerClient> client = mFsContext
            .acquireBlockWorkerClient(mWorkerNetAddress);
        Assert.assertFalse(client.get().isShutdown());
        client.get().close();
        assertTrue(client.get().isShutdown());
        client.close();
      }
    }
  
    @Ignore
    @Test
    public void testLeakTracker() throws Exception {
      ResourceLeakDetector.setLevel(ResourceLeakDetector.Level.PARANOID);
      for (int i = 0; i < 5; i++) {
        CloseableResource<BlockWorkerClient> client = mFsContext
            .acquireBlockWorkerClient(mWorkerNetAddress);
      }
      for (int i = 0; i < 10; i++) {
        byte[] mem = new byte[1024 * 1024 * 1024];
        if (mem[0] == 0x7a) {
          continue;
        }
        mem[ThreadLocalRandom.current().nextInt(1024 * 1024)] += 1;
      }
      for (int i = 0; i < 5; i++) {
        CloseableResource<BlockWorkerClient> client = mFsContext
            .acquireBlockWorkerClient(mWorkerNetAddress);
      }
      System.gc();
      assertTrue(mLogger.wasLogged(
              "DefaultBlockWorkerClient\\.close\\(\\) was not called before resource "
              + "is garbage-collected"));
    }
  }
  