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.testutils.master;
  
  import static org.mockito.Mockito.mock;
  
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.master.AlwaysStandbyPrimarySelector;
  import alluxio.master.BackupManager;
  import alluxio.master.CoreMasterContext;
  import alluxio.master.MasterRegistry;
  import alluxio.master.MasterUtils;
  import alluxio.master.SafeModeManager;
  import alluxio.master.TestSafeModeManager;
  import alluxio.master.block.BlockMasterFactory;
  import alluxio.master.file.FileSystemMaster;
  import alluxio.master.file.FileSystemMasterFactory;
  import alluxio.master.journal.JournalSystem;
  import alluxio.master.journal.JournalTestUtils;
  import alluxio.master.metrics.MetricsMasterFactory;
  import alluxio.security.user.ServerUserState;
  import alluxio.security.user.UserState;
  import alluxio.underfs.MasterUfsManager;
  
  import com.google.common.io.Files;
  import org.apache.commons.io.FileUtils;
  
  import java.io.File;
  
  public class MasterTestUtils {
  
    /**
     * Creates a new leader {@link FileSystemMaster} from journal along with its dependencies, and
     * returns the master registry and the journal system.
     *
     * @return a resource that contains the master registry and the journal system
     */
    public static FsMasterResource createLeaderFileSystemMasterFromJournal() throws Exception {
      return createFileSystemMasterFromJournal(true, null);
    }
  
    /**
     * Creates a new leader {@link FileSystemMaster} from journal along with its dependencies, and
     * returns the master registry and the journal system.
     *
     * @param userState the user state for the server
     * @return a resource that contains the master registry and the journal system
     */
    public static FsMasterResource createLeaderFileSystemMasterFromJournal(UserState userState)
        throws Exception {
      return createFileSystemMasterFromJournal(true, userState);
    }
  
    /**
     * Creates a new standby {@link FileSystemMaster} from journal along with its dependencies, and
     * returns the master registry and the journal system.
     *
     * @return a resource that contains the master registry and the journal system
     */
    public static FsMasterResource createStandbyFileSystemMasterFromJournal() throws Exception {
      return createFileSystemMasterFromJournal(false, null);
    }
  
    /**
     * Creates a new leader {@link FileSystemMaster} from a copy of the journal along with its
     * dependencies, and returns the master registry and the journal system.
     *
     * @return a resource that contains the master registry and the journal system
     */
    public static FsMasterResource createLeaderFileSystemMasterFromJournalCopy() throws Exception {
      String masterJournal = Configuration.getString(PropertyKey.MASTER_JOURNAL_FOLDER);
      File tmpDirFile = Files.createTempDir();
      tmpDirFile.deleteOnExit();
      String tempDir = tmpDirFile.getAbsolutePath();
      FileUtils.copyDirectory(new File(masterJournal), new File(tempDir));
      return createFileSystemMasterFromJournal(true, null, tempDir);
    }
  
    /**
     * Creates a new {@link FileSystemMaster} from journal along with its dependencies, and returns
     * the master registry and the journal system.
     *
     * @param isLeader whether to start as a leader
     * @param userState the user state for the server. if null, will use ServerUserState.global()
     * @return a resource that contains the master registry and the journal system
     */
    private static FsMasterResource createFileSystemMasterFromJournal(boolean isLeader,
        UserState userState) throws Exception {
      String masterJournal = Configuration.getString(PropertyKey.MASTER_JOURNAL_FOLDER);
      return createFileSystemMasterFromJournal(isLeader, userState, masterJournal);
    }
  
    /**
     * Creates a new {@link FileSystemMaster} from journal along with its dependencies, and returns
     * the master registry and the journal system.
     *
     * @param isLeader whether to start as a leader
     * @param userState the user state for the server. if null, will use ServerUserState.global()
     * @param journalFolder the folder of the master journal
     * @return a resource that contains the master registry and the journal system
     */
    private static FsMasterResource createFileSystemMasterFromJournal(boolean isLeader,
        UserState userState, String journalFolder) throws Exception {
      String masterJournal = journalFolder;
      MasterRegistry registry = new MasterRegistry();
      SafeModeManager safeModeManager = new TestSafeModeManager();
      long startTimeMs = System.currentTimeMillis();
      int port = Configuration.getInt(PropertyKey.MASTER_RPC_PORT);
      String baseDir = Configuration.getString(PropertyKey.MASTER_METASTORE_DIR);
      JournalSystem journalSystem = JournalTestUtils.createJournalSystem(masterJournal);
      if (userState == null) {
        userState = ServerUserState.global();
      }
      CoreMasterContext masterContext = CoreMasterContext.newBuilder()
          .setJournalSystem(journalSystem)
          .setPrimarySelector(new AlwaysStandbyPrimarySelector())
          .setSafeModeManager(safeModeManager)
          .setBackupManager(mock(BackupManager.class))
          .setBlockStoreFactory(MasterUtils.getBlockStoreFactory(baseDir))
          .setInodeStoreFactory(MasterUtils.getInodeStoreFactory(baseDir))
          .setStartTimeMs(startTimeMs)
          .setUserState(userState)
          .setPort(port)
          .setUfsManager(new MasterUfsManager())
          .build();
      new MetricsMasterFactory().create(registry, masterContext);
      new BlockMasterFactory().create(registry, masterContext);
      new FileSystemMasterFactory().create(registry, masterContext);
      journalSystem.start();
      if (isLeader) {
        journalSystem.gainPrimacy();
      }
      registry.start(isLeader);
      return new FsMasterResource(registry, journalSystem);
    }
  }
  