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   * 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.cassandra.tools;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  
  import org.apache.cassandra.config.EncryptionOptions;
  import org.apache.cassandra.net.OutboundConnectionSettings;
  import org.apache.cassandra.streaming.StreamingChannel;
  import org.apache.cassandra.streaming.async.NettyStreamingConnectionFactory;
  import org.apache.cassandra.streaming.async.NettyStreamingChannel;
  
  import static org.apache.cassandra.locator.InetAddressAndPort.getByAddress;
  
  public class BulkLoadConnectionFactory extends NettyStreamingConnectionFactory
  {
      private final int storagePort;
      private final EncryptionOptions.ServerEncryptionOptions encryptionOptions;
  
      public BulkLoadConnectionFactory(EncryptionOptions.ServerEncryptionOptions encryptionOptions, int storagePort)
      {
          this.storagePort = storagePort;
          this.encryptionOptions = encryptionOptions;
      }
  
      @Override
      public NettyStreamingChannel create(InetSocketAddress to, int messagingVersion, StreamingChannel.Kind kind) throws IOException
      {
          OutboundConnectionSettings template = new OutboundConnectionSettings(getByAddress(to));
          return create(template, messagingVersion, kind);
      }
  
      @Override
      public StreamingChannel create(InetSocketAddress to,
                                     InetSocketAddress preferred,
                                     int messagingVersion,
                                     StreamingChannel.Kind kind) throws IOException
      {
          // The preferred address is always overwritten in create(). This method override only exists so we can avoid
          // falling back to the NettyStreamingConnectionFactory implementation.
          OutboundConnectionSettings template = new OutboundConnectionSettings(getByAddress(to), getByAddress(preferred));
          return create(template, messagingVersion, kind);
      }
  
      private NettyStreamingChannel create(OutboundConnectionSettings template, int messagingVersion, StreamingChannel.Kind kind) throws IOException
      {
          // storage port can handle both encrypted and unencrypted traffic from 4.0
          // so from sstableloader's point of view we can use just storage port for both cases
  
          template = template.withConnectTo(template.to.withPort(storagePort));
  
          if (encryptionOptions != null && encryptionOptions.internode_encryption != EncryptionOptions.ServerEncryptionOptions.InternodeEncryption.none)
              template = template.withEncryption(encryptionOptions);
  
          return connect(template, messagingVersion, kind);
      }
      @Override
      public boolean supportsPreferredIp()
      {
          return false; // called in a tool context, do not use getPreferredIP
      }
  }
  