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;
  
  import java.util.Iterator;
  import java.util.ServiceLoader;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.bookkeeper.tools.common.BKFlags;
  import org.apache.bookkeeper.tools.framework.Cli;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  import org.apache.bookkeeper.tools.framework.CommandGroup;
  
  /**
   * <b>bkctl</b> interacts and operates the <i>Apache BookKeeper</i> cluster.
   */
  @Slf4j
  public class BKCtl {
  
      public static final String NAME = "bkctl";
  
      @SuppressWarnings("unchecked")
      public static void main(String[] args) {
          // load command groups
          ServiceLoader<CommandGroup> loader = ServiceLoader.load(
              CommandGroup.class, BKCtl.class.getClassLoader());
  
          CliSpec.Builder<BKFlags> specBuilder = CliSpec.<BKFlags>newBuilder()
              .withName(NAME)
              .withUsage(NAME + " [flags] [command group] [commands]")
              .withDescription(NAME + " interacts and operates Apache BookKeeper clusters")
              .withFlags(new BKFlags())
              .withConsole(System.out);
  
          Iterator<CommandGroup> cgIter = loader.iterator();
          while (cgIter.hasNext()) {
              CommandGroup<BKFlags> cg = cgIter.next();
              specBuilder.addCommand(cg);
          }
  
          CliSpec<BKFlags> spec = specBuilder.build();
  
          int retCode = Cli.runCli(spec, args);
          Runtime.getRuntime().exit(retCode);
      }
  
  }
  