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.autorecovery;
  
  
  import com.google.common.util.concurrent.UncheckedExecutionException;
  import java.io.IOException;
  import lombok.Cleanup;
  import org.apache.bookkeeper.client.BKException;
  import org.apache.bookkeeper.client.BookKeeperAdmin;
  import org.apache.bookkeeper.conf.ClientConfiguration;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.net.BookieId;
  import org.apache.bookkeeper.tools.cli.helpers.BookieCommand;
  import org.apache.bookkeeper.tools.framework.CliFlags;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Command to print which node has the auditor lock.
   */
  public class WhoIsAuditorCommand extends BookieCommand<CliFlags> {
  
      static final Logger LOG = LoggerFactory.getLogger(WhoIsAuditorCommand.class);
  
      private static final String NAME = "whoisauditor";
      private static final String DESC = "Print the node which holds the auditor lock.";
  
      private BookKeeperAdmin bka;
  
      public WhoIsAuditorCommand() {
          this(null);
      }
  
      public WhoIsAuditorCommand(BookKeeperAdmin bka) {
          super(CliSpec.newBuilder()
                       .withName(NAME)
                       .withDescription(DESC)
                       .withFlags(new CliFlags())
                       .build());
          this.bka = bka;
      }
  
      @Override
      public boolean apply(ServerConfiguration conf, CliFlags cmdFlags) {
          try {
              return getAuditor(conf);
          } catch (Exception e) {
              throw new UncheckedExecutionException(e.getMessage(), e);
          }
      }
  
      private boolean getAuditor(ServerConfiguration conf)
              throws BKException, InterruptedException, IOException {
          ClientConfiguration clientConfiguration = new ClientConfiguration(conf);
  
          BookieId bookieId;
          if (this.bka != null) {
              bookieId = bka.getCurrentAuditor();
          } else {
              @Cleanup
              BookKeeperAdmin bka = new BookKeeperAdmin(clientConfiguration);
              bookieId = bka.getCurrentAuditor();
          }
          if (bookieId == null) {
              LOG.info("No auditor elected");
              return false;
          }
          LOG.info("Auditor: " + bookieId);
          return true;
      }
  }
  