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 com.datastax.oss.driver.api.testinfra.loadbalancing;
  
  import com.datastax.oss.driver.api.core.metadata.Node;
  import com.datastax.oss.driver.shaded.guava.common.primitives.UnsignedBytes;
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  import java.util.Comparator;
  
  public final class NodeComparator implements Comparator<Node> {
  
    public static final NodeComparator INSTANCE = new NodeComparator();
  
    private static final byte[] EMPTY = {};
  
    private NodeComparator() {}
  
    @Override
    public int compare(Node node1, Node node2) {
      // compare address bytes, byte by byte.
      byte[] address1 =
          node1
              .getBroadcastAddress()
              .map(InetSocketAddress::getAddress)
              .map(InetAddress::getAddress)
              .orElse(EMPTY);
      byte[] address2 =
          node2
              .getBroadcastAddress()
              .map(InetSocketAddress::getAddress)
              .map(InetAddress::getAddress)
              .orElse(EMPTY);
  
      int result = UnsignedBytes.lexicographicalComparator().compare(address1, address2);
      if (result != 0) {
        return result;
      }
  
      int port1 = node1.getBroadcastAddress().map(InetSocketAddress::getPort).orElse(0);
      int port2 = node2.getBroadcastAddress().map(InetSocketAddress::getPort).orElse(0);
      return port1 - port2;
    }
  }
  