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.backup;
  
  import com.google.common.base.MoreObjects;
  import io.atomix.catalyst.buffer.BufferInput;
  import io.atomix.catalyst.buffer.BufferOutput;
  import io.atomix.catalyst.serializer.CatalystSerializable;
  import io.atomix.catalyst.serializer.Serializer;
  
  /**
   * The backup message used for signaling follower to suspend its journals.
   */
  public class BackupSuspendMessage implements CatalystSerializable {
    /**
     * Empty constructor as per deserialization requirement.
     */
    public BackupSuspendMessage() {}
  
    @Override
    public void writeObject(BufferOutput<?> bufferOutput, Serializer serializer) {}
  
    @Override
    public void readObject(BufferInput<?> bufferInput, Serializer serializer) {}
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this).toString();
    }
  }
  