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.kafka.clients;
  
  import java.net.InetAddress;
  
  class AddressChangeHostResolver implements HostResolver {
      private final InetAddress[] initialAddresses;
      private final InetAddress[] newAddresses;
      private boolean useNewAddresses;
      private int resolutionCount = 0;
  
      public AddressChangeHostResolver(InetAddress[] initialAddresses, InetAddress[] newAddresses) {
          this.initialAddresses = initialAddresses;
          this.newAddresses = newAddresses;
      }
  
      @Override
      public InetAddress[] resolve(String host) {
          ++resolutionCount;
          return useNewAddresses ? newAddresses : initialAddresses;
      }
  
      public void changeAddresses() {
          useNewAddresses = true;
      }
  
      public boolean useNewAddresses() {
          return useNewAddresses;
      }
  
      public int resolutionCount() {
          return resolutionCount;
      }
  }
  