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.assertEquals;
  
  import alluxio.clock.ManualClock;
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.grpc.RegisterWorkerPOptions;
  import alluxio.master.AlwaysPrimaryPrimarySelector;
  import alluxio.master.CoreMasterContext;
  import alluxio.master.MasterRegistry;
  import alluxio.master.MasterTestUtils;
  import alluxio.master.block.BlockMaster;
  import alluxio.master.block.DefaultBlockMaster;
  import alluxio.master.block.meta.MasterWorkerInfo;
  import alluxio.master.journal.noop.NoopJournalSystem;
  import alluxio.master.metrics.MetricsMaster;
  import alluxio.master.metrics.MetricsMasterFactory;
  import alluxio.util.executor.ExecutorServiceFactories;
  import alluxio.wire.WorkerNetAddress;
  
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  
  import java.util.Collections;
  import java.util.concurrent.Executors;
  
  public class BlockMasterDeleteLostWorkerIntegrationTest {
    private BlockMaster mBlockMaster;
    private ManualClock mClock;
    private MasterRegistry mRegistry;
  
    private static final int MASTER_WORKER_DELETE_TIMEOUT_MS = 10;
    private static final int MASTER_WORKER_TIMEOUT_MS = 10;
    static final WorkerNetAddress NET_ADDRESS_1 = new WorkerNetAddress()
            .setHost("localhost").setRpcPort(80).setDataPort(81).setWebPort(82);
  
    /**
     * Sets up the dependencies before a test runs.
     */
    @Before
    public void before() throws Exception {
      Configuration.set(PropertyKey.MASTER_LOST_WORKER_DELETION_TIMEOUT_MS,
          MASTER_WORKER_DELETE_TIMEOUT_MS);
      Configuration.set(PropertyKey.MASTER_WORKER_TIMEOUT_MS, MASTER_WORKER_TIMEOUT_MS);
  
      mRegistry = new MasterRegistry();
      CoreMasterContext masterContext = MasterTestUtils.testMasterContext(new NoopJournalSystem(),
          null, new AlwaysPrimaryPrimarySelector());
      MetricsMaster metricsMaster = new MetricsMasterFactory().create(mRegistry, masterContext);
      mRegistry.add(MetricsMaster.class, metricsMaster);
      mClock = new ManualClock();
  
      mBlockMaster = new DefaultBlockMaster(metricsMaster, masterContext, mClock,
          ExecutorServiceFactories.constantExecutorServiceFactory(
              Executors.newFixedThreadPool(10)));
      mRegistry.add(BlockMaster.class, mBlockMaster);
      mRegistry.start(true);
    }
  
    @After
    public void after() throws Exception {
      mRegistry.stop();
    }
  
    @Test
    public void lostWorkerDeletedAfterTimeout() throws Exception {
      long workerId = mBlockMaster.getWorkerId(NET_ADDRESS_1);
      mBlockMaster.workerRegister(workerId, Collections.EMPTY_LIST, Collections.EMPTY_MAP,
          Collections.EMPTY_MAP, Collections.EMPTY_MAP, Collections.EMPTY_MAP,
          RegisterWorkerPOptions.getDefaultInstance());
      DefaultBlockMaster.LostWorkerDetectionHeartbeatExecutor lostWorkerDetector =
            ((DefaultBlockMaster) mBlockMaster).new LostWorkerDetectionHeartbeatExecutor();
      // Verify the worker
      assertEquals(1, mBlockMaster.getWorkerCount());
      assertEquals(0, mBlockMaster.getLostWorkerCount());
      MasterWorkerInfo worker = mBlockMaster.getWorker(workerId);
  
      // The worker will not be deleted, if the lost time is less than MASTER_WORKER_TIMEOUT_MS
      long newTimeMs = worker.getLastUpdatedTimeMs() + MASTER_WORKER_TIMEOUT_MS + 1;
      mClock.setTimeMs(newTimeMs);
      lostWorkerDetector.heartbeat(Long.MAX_VALUE);
      assertEquals(0, mBlockMaster.getWorkerCount());
      assertEquals(1, mBlockMaster.getLostWorkerCount());
  
      // The worker will be deleted, if the lost time is greater than MASTER_WORKER_TIMEOUT_MS
      newTimeMs = newTimeMs + MASTER_WORKER_DELETE_TIMEOUT_MS + 1;
      mClock.setTimeMs(newTimeMs);
      lostWorkerDetector.heartbeat(Long.MAX_VALUE);
      assertEquals(0, mBlockMaster.getWorkerCount());
      assertEquals(0, mBlockMaster.getLostWorkerCount());
    }
  }
  