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.dht.tokenallocator;
  
  import java.util.NavigableMap;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.dht.IPartitioner;
  import org.apache.cassandra.dht.Token;
  import org.apache.cassandra.locator.InetAddressAndPort;
  
  public class TokenAllocatorFactory
  {
      private static final Logger logger = LoggerFactory.getLogger(TokenAllocatorFactory.class);
      public static TokenAllocator<InetAddressAndPort> createTokenAllocator(NavigableMap<Token, InetAddressAndPort> sortedTokens,
                                                                            ReplicationStrategy<InetAddressAndPort> strategy,
                                                                            IPartitioner partitioner)
      {
          if(strategy.replicas() == 1)
          {
              logger.info("Using NoReplicationTokenAllocator.");
              NoReplicationTokenAllocator<InetAddressAndPort> allocator = new NoReplicationTokenAllocator<>(sortedTokens, strategy, partitioner);
              TokenAllocatorDiagnostics.noReplicationTokenAllocatorInstanciated(allocator);
              return allocator;
          }
          logger.info("Using ReplicationAwareTokenAllocator.");
          ReplicationAwareTokenAllocator<InetAddressAndPort> allocator = new ReplicationAwareTokenAllocator<>(sortedTokens, strategy, partitioner);
          TokenAllocatorDiagnostics.replicationTokenAllocatorInstanciated(allocator);
          return allocator;
      }
  }
  