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.journal;
  
  import alluxio.exception.status.UnavailableException;
  import alluxio.proto.journal.Journal.JournalEntry;
  
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * Noop version of JournalContext.
   */
  @ThreadSafe
  public final class NoopJournalContext implements JournalContext {
    public static final NoopJournalContext INSTANCE = new NoopJournalContext();
  
    /**
     * Constructs the {@link NoopJournalContext}.
     */
    private NoopJournalContext() {}
  
    @Override
    public void append(JournalEntry entry) {}
  
    @Override
    public void flush() throws UnavailableException {}
  
    @Override
    public void close() {}
  }
  