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.helpers;
  
  import lombok.extern.slf4j.Slf4j;
  import org.apache.bookkeeper.client.api.BookKeeper;
  import org.apache.bookkeeper.common.net.ServiceURI;
  import org.apache.bookkeeper.conf.ClientConfiguration;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.tools.common.BKCommand;
  import org.apache.bookkeeper.tools.common.BKFlags;
  import org.apache.bookkeeper.tools.framework.CliFlags;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  import org.apache.commons.configuration2.CompositeConfiguration;
  
  /**
   * This is a mixin class for commands that needs a bookkeeper client.
   */
  @Slf4j
  public abstract class ClientCommand<ClientFlagsT extends CliFlags> extends BKCommand<ClientFlagsT> {
  
      protected ClientCommand(CliSpec<ClientFlagsT> spec) {
          super(spec);
      }
  
      @Override
      protected boolean apply(ServiceURI serviceURI,
                              CompositeConfiguration conf,
                              BKFlags globalFlags,
                              ClientFlagsT cmdFlags) {
          ClientConfiguration clientConf = new ClientConfiguration();
          clientConf.loadConf(conf);
  
          if (null != serviceURI) {
              clientConf.setMetadataServiceUri(serviceURI.getUri().toString());
          }
  
          return apply(clientConf, cmdFlags);
      }
  
      public boolean apply(ServerConfiguration conf,
                           ClientFlagsT cmdFlags) {
          ClientConfiguration clientConf = new ClientConfiguration(conf);
          return apply(clientConf, cmdFlags);
      }
  
      protected boolean apply(ClientConfiguration conf,
                              ClientFlagsT cmdFlags) {
          try (BookKeeper bk = BookKeeper.newBuilder(conf).build()) {
              run(bk, cmdFlags);
              return true;
          } catch (Exception e) {
              log.error("Failed to process command '{}'", name(), e);
              return false;
          }
      }
  
      protected abstract void run(BookKeeper bk, ClientFlagsT cmdFlags)
          throws Exception;
  
  }
  