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.cassandra.repair.asymmetric;
  
  import java.util.Set;
  
  import com.google.common.collect.ImmutableMap;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.dht.Range;
  import org.apache.cassandra.dht.Token;
  import org.apache.cassandra.locator.InetAddressAndPort;
  
  /**
   * Tracks incoming streams for a single host
   */
  public class IncomingRepairStreamTracker
  {
      private static final Logger logger = LoggerFactory.getLogger(IncomingRepairStreamTracker.class);
      private final DifferenceHolder differences;
      private final RangeMap<StreamFromOptions> incoming = new RangeMap<>();
  
      public IncomingRepairStreamTracker(DifferenceHolder differences)
      {
          this.differences = differences;
      }
  
      public String toString()
      {
          return "IncomingStreamTracker{" +
                 "incoming=" + incoming +
                 '}';
      }
  
      /**
       * Adds a range to be streamed from streamFromNode
       *
       * First the currently tracked ranges are denormalized to make sure that no ranges overlap, then
       * the streamFromNode is added to the StreamFromOptions for the range
       *
       * @param range the range we need to stream from streamFromNode
       * @param streamFromNode the node we should stream from
       */
      public void addIncomingRangeFrom(Range<Token> range, InetAddressAndPort streamFromNode)
      {
          logger.trace("adding incoming range {} from {}", range, streamFromNode);
          Set<Range<Token>> newInput = RangeDenormalizer.denormalize(range, incoming);
          for (Range<Token> input : newInput)
              incoming.computeIfAbsent(input, (newRange) -> new StreamFromOptions(differences, newRange)).add(streamFromNode);
      }
  
      public ImmutableMap<Range<Token>, StreamFromOptions> getIncoming()
      {
          return ImmutableMap.copyOf(incoming);
      }
  }
  
  
  
  
  