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 com.google.common.net.InetAddresses;
  import java.net.InetAddress;
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import org.apache.bookkeeper.net.BookieId;
  import org.apache.bookkeeper.net.BookieSocketAddress;
  import org.apache.bookkeeper.proto.BookieAddressResolver;
  
  
  /**
   * Helper classes used by the cli commands.
   */
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public final class CommandHelpers {
  
      private  static final String UNKNOWN = "UNKNOWN";
      /*
       * The string returned is of the form:
       * BookieID:bookieId, IP:ip, Port: port, Hostname: hostname
       * When using hostname as bookie id, it's possible that the host is no longer valid and
       * can't get a ip from the hostname, so using UNKNOWN to indicate ip is unknown for the hostname
       */
      public static String getBookieSocketAddrStringRepresentation(BookieId bookieId,
                                                                   BookieAddressResolver bookieAddressResolver) {
          try {
              BookieSocketAddress networkAddress = bookieAddressResolver.resolve(bookieId);
              String hostname = networkAddress.getHostName();
              String realHostname;
              String ip;
              if (InetAddresses.isInetAddress(hostname)){
                  ip = hostname;
                  realHostname = networkAddress.getSocketAddress().getAddress().getCanonicalHostName();
              } else {
                 InetAddress ia = networkAddress.getSocketAddress().getAddress();
                 if (null != ia){
                    ip = ia.getHostAddress();
                 } else {
                    ip = UNKNOWN;
                 }
                 realHostname = hostname;
              }
              return formatBookieSocketAddress(bookieId, ip, networkAddress.getPort(), realHostname);
          } catch (BookieAddressResolver.BookieIdNotResolvedException bookieNotAvailable) {
              return formatBookieSocketAddress(bookieId, UNKNOWN, 0, UNKNOWN);
          }
      }
  
      /**
       * Format {@link BookieSocketAddress}.
       **/
      private static String formatBookieSocketAddress(BookieId bookieId, String ip, int port, String hostName) {
         return String.format("BookieID:%s, IP:%s, Port:%d, Hostname:%s", bookieId.toString(), ip, port, hostName);
      }
  
  }
  