hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/protocol/commands/ReregisterCommand.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.ozone.protocol.commands;

import org.apache.hadoop.hdds.protocol.proto
    .StorageContainerDatanodeProtocolProtos.SCMCommandProto;

import static org.apache.hadoop.hdds.protocol.proto
    .StorageContainerDatanodeProtocolProtos.ReregisterCommandProto;

/**
 * Informs a datanode to register itself with SCM again.
 */
public class ReregisterCommand extends
    SCMCommand<ReregisterCommandProto>{

  /**
   * Returns the type of this command.
   *
   * @return Type
   */
  @Override
  public SCMCommandProto.Type getType() {
    return SCMCommandProto.Type.reregisterCommand;
  }

  /**
   * Not implemented for ReregisterCommand.
   *
   * @return cmdId.
   */
  @Override
  public long getId() {
    return 0;
  }

  @Override
  public ReregisterCommandProto getProto() {
    return ReregisterCommandProto
        .newBuilder()
        .build();
  }
}