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.master;
  
  import alluxio.Server;
  import alluxio.grpc.GrpcService;
  import alluxio.grpc.ServiceType;
  import alluxio.master.journal.JournalContext;
  import alluxio.master.journal.checkpoint.CheckpointName;
  import alluxio.proto.journal.Journal;
  import alluxio.proto.journal.Journal.JournalEntry;
  import alluxio.resource.CloseableIterator;
  
  import java.util.ArrayDeque;
  import java.util.Map;
  import java.util.Queue;
  import java.util.Set;
  import javax.annotation.Nullable;
  
  /**
   * A fake master implementation.
   */
  public final class MockMaster implements Master {
    private Queue<JournalEntry> mEntries;
  
    public MockMaster() {
      mEntries = new ArrayDeque<>();
    }
  
    @Override
    @Nullable
    public Map<ServiceType, GrpcService> getServices() {
      return null;
    }
  
    @Override
    public String getName() {
      return "MockMaster";
    }
  
    @Override
    @Nullable
    public Set<Class<? extends Server>> getDependencies() {
      return null;
    }
  
    @Override
    public void start(Boolean isPrimary) {}
  
    @Override
    public void stop() {}
  
    @Override
    public void close() {}
  
    @Override
    public boolean processJournalEntry(Journal.JournalEntry entry) {
      mEntries.add(entry);
      return true;
    }
  
    @Override
    public void resetState() {}
  
    @Override
    public CloseableIterator<JournalEntry> getJournalEntryIterator() {
      return CloseableIterator.noopCloseable(mEntries.iterator());
    }
  
    @Override
    public JournalContext createJournalContext() {
      throw new IllegalStateException("Cannot create journal contexts for MockMaster");
    }
  
    @Override
    public MasterContext getMasterContext() {
      return null;
    }
  
    @Override
    public CheckpointName getCheckpointName() {
      return CheckpointName.NOOP;
    }
  }
  
  