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.service.reads.repair;
  
  import java.util.Map;
  import java.util.function.Consumer;
  
  import org.apache.cassandra.db.DecoratedKey;
  import org.apache.cassandra.db.Mutation;
  import org.apache.cassandra.db.partitions.PartitionIterator;
  import org.apache.cassandra.db.partitions.UnfilteredPartitionIterators;
  import org.apache.cassandra.exceptions.ReadTimeoutException;
  import org.apache.cassandra.locator.Endpoints;
  import org.apache.cassandra.locator.Replica;
  import org.apache.cassandra.locator.ReplicaPlan;
  import org.apache.cassandra.service.reads.DigestResolver;
  import org.apache.cassandra.service.reads.ReadCoordinator;
  
  /**
   * Bypasses the read repair path for short read protection and testing
   */
  public class NoopReadRepair<E extends Endpoints<E>, P extends ReplicaPlan.ForRead<E, P>> implements ReadRepair<E, P>
  {
      public static final NoopReadRepair instance = new NoopReadRepair();
  
      private NoopReadRepair() {}
  
      @Override
      public UnfilteredPartitionIterators.MergeListener getMergeListener(P replicas)
      {
          return UnfilteredPartitionIterators.MergeListener.NOOP;
      }
  
      @Override
      public void startRepair(DigestResolver<E, P> digestResolver, Consumer<PartitionIterator> resultConsumer)
      {
          resultConsumer.accept(digestResolver.getData());
      }
  
      public void awaitReads() throws ReadTimeoutException
      {
      }
  
      @Override
      public void maybeSendAdditionalReads()
      {
  
      }
  
      @Override
      public void maybeSendAdditionalWrites()
      {
  
      }
  
      @Override
      public void awaitWrites()
      {
  
      }
  
      @Override
      public void repairPartition(DecoratedKey partitionKey, Map<Replica, Mutation> mutations, ReplicaPlan.ForWrite writePlan, ReadRepairSource rrSource)
      {
  
      }
  
      @Override
      public void repairPartitionDirectly(ReadCoordinator coordinator, DecoratedKey partitionKey, Map<Replica, Mutation> mutations, ReplicaPlan.ForWrite writePlan)
      {
          // Shouldn't be possible to invoke this since repairPartition is a no op
          throw new UnsupportedOperationException();
      }
  }
  