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.server.ft.journal;
  
  import static org.junit.Assert.assertNotEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import alluxio.master.AlluxioMasterProcess;
  import alluxio.master.LocalAlluxioCluster;
  import alluxio.master.meta.DefaultMetaMaster;
  import alluxio.master.meta.MetaMaster;
  import alluxio.testutils.LocalAlluxioClusterResource;
  
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  
  /**
   * Integration tests for meta master journaling.
   */
  public class MetaMasterJournalTest {
    @Rule
    public LocalAlluxioClusterResource mClusterResource =
        new LocalAlluxioClusterResource.Builder()
            .build();
    private LocalAlluxioCluster mCluster;
  
    @Before
    public void before() {
      mCluster = mClusterResource.get();
    }
  
    @Test
    public void journalClusterID() throws Exception {
      MetaMaster metaMaster =
          mCluster.getLocalAlluxioMaster().getMasterProcess().getMaster(MetaMaster.class);
      String clusterID = metaMaster.getClusterID();
      assertNotNull(clusterID);
      assertNotEquals(clusterID, DefaultMetaMaster.INVALID_CLUSTER_ID);
      mCluster.stopMasters();
      mCluster.startMasters();
      AlluxioMasterProcess masterProcess = mCluster.getLocalAlluxioMaster().getMasterProcess();
      assertTrue(masterProcess.getMaster(MetaMaster.class).getClusterID().equals(clusterID));
    }
  }
  