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 alluxio.master.transport.GrpcMessagingConnection;
  
  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 introducing backup-worker to leader.
   */
  public class BackupHandshakeMessage implements CatalystSerializable {
    /** Backup-worker's hostname. */
    private String mBackupWorkerHostname;
  
    /** Used to attach connection to message when arrived at the target. */
    private GrpcMessagingConnection mConnection;
  
    /**
     * Empty constructor as per deserialization requirement.
     */
    public BackupHandshakeMessage() {
      mBackupWorkerHostname = null;
    }
  
    /**
     * Creates a handshake message.
     *
     * @param hostname backup-worker hostname
     */
    public BackupHandshakeMessage(String hostname) {
      mBackupWorkerHostname = hostname;
    }
  
    /**
     * @return the hostname for the backup-worker
     */
    public String getBackupWorkerHostname() {
      return mBackupWorkerHostname;
    }
  
    /**
     * @param connection connection from which this message is coming from
     */
    public void setConnection(GrpcMessagingConnection connection) {
      mConnection = connection;
    }
  
    /**
     * @return connection from which this message is coming from
     */
    public GrpcMessagingConnection getConnection() {
      return mConnection;
    }
  
    @Override
    public void writeObject(BufferOutput<?> bufferOutput, Serializer serializer) {
      bufferOutput.writeString(mBackupWorkerHostname);
    }
  
    @Override
    public void readObject(BufferInput<?> bufferInput, Serializer serializer) {
      mBackupWorkerHostname = bufferInput.readString();
    }
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("BackupWorkerHostName", mBackupWorkerHostname)
          .toString();
    }
  }
  