DelegatingFacilities.java

/*
   Copyright (c) 2012 LinkedIn Corp.

   Licensed 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.
*/

/**
 * $Id: $
 */

package com.linkedin.d2.balancer.util;

import com.linkedin.d2.balancer.Directory;
import com.linkedin.d2.balancer.Facilities;
import com.linkedin.d2.balancer.KeyMapper;
import com.linkedin.d2.balancer.ServiceUnavailableException;
import com.linkedin.d2.balancer.util.partitions.PartitionAccessor;
import com.linkedin.d2.balancer.util.partitions.PartitionInfoProvider;
import com.linkedin.r2.transport.common.TransportClientFactory;

import java.net.URI;
import java.util.Collection;

/**
 * @author Josh Walker
 * @version $Revision: $
 */

public class DelegatingFacilities implements Facilities
{
  private final DirectoryProvider _directoryProvider;
  private final KeyMapperProvider _keyMapperProvider;
  private final ClientFactoryProvider _clientFactoryProvider;
  private final PartitionInfoProvider _partitionInfoProvider;

  @Deprecated
  public DelegatingFacilities(DirectoryProvider directoryProvider,
                              KeyMapperProvider keyMapperProvider,
                              ClientFactoryProvider clientFactoryProvider)
  {
    this(directoryProvider, keyMapperProvider, clientFactoryProvider, new PartitionInfoProvider()
    {
      @Override
      public <K> HostToKeyMapper<K> getPartitionInformation (URI serviceUri,
                                                                       Collection<K> keys,
                                                                       int limitHostPerPartition,
                                                                       int hash)
          throws ServiceUnavailableException
      {
        return null;
      }

      @Override
      public PartitionAccessor getPartitionAccessor(URI serviceUri) throws ServiceUnavailableException
      {
        return null;
      }
    });
  }

  public DelegatingFacilities(DirectoryProvider directoryProvider,
                              KeyMapperProvider keyMapperProvider,
                              ClientFactoryProvider clientFactoryProvider,
                              PartitionInfoProvider partitionInfoProvider)
  {
    _directoryProvider = directoryProvider;
    _keyMapperProvider = keyMapperProvider;
    _clientFactoryProvider = clientFactoryProvider;
    _partitionInfoProvider = partitionInfoProvider;
  }

  @Override
  public Directory getDirectory()
  {
    return _directoryProvider.getDirectory();
  }

  @Override
  public PartitionInfoProvider getPartitionInfoProvider ()
  {
    return _partitionInfoProvider;
  }

  @Override
  public KeyMapper getKeyMapper()
  {
    return _keyMapperProvider.getKeyMapper();
  }

  @Override
  public TransportClientFactory getClientFactory(String scheme)
  {
    return _clientFactoryProvider.getClientFactory(scheme);
  }
}