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;
  }
}

@@ -1,8 +1,597 @@
+/*%0A * Copyright DataStax, Inc.%0A *%0A * Licensed under the Apache License, Version 2.0 (the %22License%22);%0A * you may not use this file except in compliance with the License.%0A * You may obtain a copy of the License at%0A *%0A * http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0A
 package 

Add missing header