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.assertEquals;
  import static org.junit.Assert.fail;
  
  import alluxio.AlluxioURI;
  import alluxio.ClientContext;
  import alluxio.client.file.FileSystemMasterClient;
  import alluxio.client.file.RetryHandlingFileSystemMasterClient;
  import alluxio.client.meta.MetaMasterClient;
  import alluxio.client.meta.RetryHandlingMetaMasterClient;
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.exception.AccessControlException;
  import alluxio.grpc.BackupPOptions;
  import alluxio.grpc.BackupPRequest;
  import alluxio.grpc.CreateDirectoryPOptions;
  import alluxio.grpc.UfsPMode;
  import alluxio.grpc.UpdateUfsModePOptions;
  import alluxio.grpc.WritePType;
  import alluxio.master.LocalAlluxioCluster;
  import alluxio.master.MasterClientContext;
  import alluxio.testutils.BaseIntegrationTest;
  import alluxio.testutils.LocalAlluxioClusterResource;
  
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  import java.io.File;
  
  /**
   * Tests checkpoints remain consistent with intended master state.
   */
  public class JournalCheckpointIntegrationTest extends BaseIntegrationTest {
    @Rule
    public LocalAlluxioClusterResource mClusterResource =
        new LocalAlluxioClusterResource.Builder()
            .setProperty(PropertyKey.MASTER_JOURNAL_TAILER_SHUTDOWN_QUIET_WAIT_TIME_MS, 0)
            .setNumWorkers(0)
            .build();
  
    @Rule
    public TemporaryFolder mFolder = new TemporaryFolder();
  
    public LocalAlluxioCluster mCluster;
  
    @Before
    public void before() {
      mCluster = mClusterResource.get();
    }
  
    @Test
    public void recoverMounts() throws Exception {
      AlluxioURI alluxioMount1 = new AlluxioURI("/mount1");
      AlluxioURI alluxioMount2 = new AlluxioURI("/mount2");
      AlluxioURI fileMount1 = new AlluxioURI(mFolder.newFolder("1").getAbsolutePath());
      AlluxioURI fileMount2 = new AlluxioURI(mFolder.newFolder("2").getAbsolutePath());
      mCluster.getClient().mount(alluxioMount1, fileMount1);
      mCluster.getClient().mount(alluxioMount2, fileMount2);
  
      backupAndRestore();
  
      assertEquals(3, mCluster.getClient().getMountTable().size());
      mCluster.getClient().unmount(alluxioMount1);
      assertEquals(2, mCluster.getClient().getMountTable().size());
      Configuration.unset(PropertyKey.MASTER_JOURNAL_INIT_FROM_BACKUP);
    }
  
    @Test
    public void recoverUfsState() throws Exception {
      FileSystemMasterClient client =
          new RetryHandlingFileSystemMasterClient(MasterClientContext
              .newBuilder(ClientContext.create(Configuration.global())).build());
      client.updateUfsMode(new AlluxioURI(""),
          UpdateUfsModePOptions.newBuilder().setUfsMode(UfsPMode.READ_ONLY).build());
  
      backupAndRestore();
      try {
        mCluster.getClient().createDirectory(new AlluxioURI("/test"),
            CreateDirectoryPOptions.newBuilder().setWriteType(WritePType.THROUGH).build());
        fail("Expected an exception to be thrown");
      } catch (AccessControlException e) {
        // Expected
      }
    }
  
    private void backupAndRestore() throws Exception {
      File backup = mFolder.newFolder("backup");
      MetaMasterClient metaClient =
          new RetryHandlingMetaMasterClient(MasterClientContext
              .newBuilder(ClientContext.create(Configuration.global())).build());
      AlluxioURI backupURI = metaClient
          .backup(BackupPRequest.newBuilder().setTargetDirectory(backup.getAbsolutePath())
              .setOptions(BackupPOptions.newBuilder().setLocalFileSystem(true)).build())
          .getBackupUri();
      Configuration.set(PropertyKey.MASTER_JOURNAL_INIT_FROM_BACKUP, backupURI);
      mCluster.formatAndRestartMasters();
    }
  }
  