hadoop-hdds/tools/src/main/java/org/apache/hadoop/hdds/scm/cli/pipeline/CreatePipelineSubcommand.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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.hdds.scm.cli.pipeline;

import org.apache.hadoop.hdds.cli.HddsVersionProvider;
import org.apache.hadoop.hdds.protocol.proto.HddsProtos;
import org.apache.hadoop.hdds.scm.cli.SCMCLI;
import org.apache.hadoop.hdds.scm.client.ScmClient;
import picocli.CommandLine;

import java.util.concurrent.Callable;

/**
 * Handler of createPipeline command.
 */
@CommandLine.Command(
    name = "createPipeline",
    description = "create pipeline",
    mixinStandardHelpOptions = true,
    versionProvider = HddsVersionProvider.class)
public class CreatePipelineSubcommand implements Callable<Void> {
  @CommandLine.ParentCommand
  private SCMCLI parent;

  @CommandLine.Option(
      names = {"-t", "--replicationType"},
      description = "Replication type (STAND_ALONE, RATIS)",
      defaultValue = "STAND_ALONE"
  )
  private HddsProtos.ReplicationType type
      = HddsProtos.ReplicationType.STAND_ALONE;

  @CommandLine.Option(
      names = {"-f", "--replicationFactor"},
      description = "Replication factor (ONE, THREE)",
      defaultValue = "ONE"
  )
  private HddsProtos.ReplicationFactor factor
      = HddsProtos.ReplicationFactor.ONE;

  @Override
  public Void call() throws Exception {
    if (type == HddsProtos.ReplicationType.CHAINED) {
      throw new IllegalArgumentException(type.name()
          + " is not supported yet.");
    }
    try (ScmClient scmClient = parent.createScmClient()) {
      scmClient.createReplicationPipeline(
          type,
          factor,
          HddsProtos.NodePool.getDefaultInstance());
      return null;
    }
  }
}