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.locator;
  
  import java.util.Comparator;
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.tcm.ClusterMetadata;
  import org.apache.cassandra.tcm.membership.Location;
  import org.apache.cassandra.utils.Sortable;
  
  public class SnitchAdapter implements InitialLocationProvider, NodeProximity, NodeAddressConfig
  {
      public final IEndpointSnitch snitch;
  
      public SnitchAdapter(IEndpointSnitch snitch)
      {
          this.snitch = snitch;
      }
  
      @Override
      public Location initialLocation()
      {
          return new Location(snitch.getLocalDatacenter(), snitch.getLocalRack());
      }
  
      @Override
      public void validate(ClusterMetadata metadata)
      {
          Set<String> datacenters = metadata.directory.allDatacenterRacks().keySet();
          Set<String> racks = new HashSet<>();
          for (String dc : datacenters)
              racks.addAll(metadata.directory.datacenterRacks(dc).keySet());
          if (!snitch.validate(datacenters, racks))
              throw new ConfigurationException("Initial location provider rejected registration location, " +
                                               "please check the system log for errors");
      }
  
      @Override
      public <C extends ReplicaCollection<? extends C>> C sortedByProximity(InetAddressAndPort address, C addresses)
      {
          return snitch.sortedByProximity(address, addresses);
      }
  
      @Override
      public int compareEndpoints(InetAddressAndPort target, Replica r1, Replica r2)
      {
          return snitch.compareEndpoints(target, r1, r2);
      }
  
      @Override
      public boolean isWorthMergingForRangeQuery(ReplicaCollection<?> merged, ReplicaCollection<?> l1, ReplicaCollection<?> l2)
      {
          return snitch.isWorthMergingForRangeQuery(merged, l1, l2);
      }
  
      @Override
      public void configureAddresses()
      {
          snitch.configureAddresses();
      }
  
      @Override
      public boolean preferLocalConnections()
      {
          return snitch.preferLocalConnections();
      }
  
      @Override
      public boolean supportCompareByEndpoint()
      {
          return snitch.supportCompareByEndpoint();
      }
  
      @Override
      public <C extends Sortable<? extends Endpoint, ? extends C>> Comparator<Endpoint> endpointComparator(InetAddressAndPort address, C addresses)
      {
          return snitch.endpointComparator(address, addresses);
      }
  }
  