content: /*
   * 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.bookkeeper.tools.cli.commands.bookies;
  
  import com.google.common.util.concurrent.UncheckedExecutionException;
  import org.apache.bookkeeper.client.BookKeeperAdmin;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.tools.cli.helpers.BookieCommand;
  import org.apache.bookkeeper.tools.framework.CliFlags;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  
  /**
   * Initializes new cluster by creating required znodes for the cluster. If
   * ledgersrootpath is already existing then it will error out. If for any
   * reason it errors out while creating znodes for the cluster, then before
   * running initnewcluster again, try nuking existing cluster by running
   * nukeexistingcluster. This is required because ledgersrootpath znode would
   * be created after verifying that it doesn't exist, hence during next retry
   * of initnewcluster it would complain saying that ledgersrootpath is
   * already existing.
   */
  public class InitCommand extends BookieCommand<CliFlags> {
  
      private static final String NAME = "init";
      private static final String DESC =
          "Initializes a new bookkeeper cluster. If initnewcluster fails then try nuking "
          + "existing cluster by running nukeexistingcluster before running initnewcluster again";
  
      public InitCommand() {
          super(CliSpec.newBuilder()
                       .withName(NAME)
                       .withDescription(DESC)
                       .withFlags(new CliFlags())
                       .build());
      }
  
      @Override
      public boolean apply(ServerConfiguration conf, CliFlags cmdFlags) {
          try {
              return BookKeeperAdmin.initNewCluster(conf);
          } catch (Exception e) {
              throw new UncheckedExecutionException(e.getMessage(), e);
          }
      }
  }
  