content: /*
   * 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.
   */
  package io.airlift.compress.v3.snappy;
  
  import io.airlift.compress.v3.hadoop.CodecAdapter;
  import org.apache.hadoop.conf.Configuration;
  
  import java.util.Optional;
  
  import static org.apache.hadoop.fs.CommonConfigurationKeys.IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_DEFAULT;
  import static org.apache.hadoop.fs.CommonConfigurationKeys.IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY;
  
  public class SnappyCodec
          extends CodecAdapter
  {
      public SnappyCodec()
      {
          super(configuration -> new SnappyHadoopStreams(true, getBufferSize(configuration)));
      }
  
      private static int getBufferSize(Optional<Configuration> configuration)
      {
          // Favor using the configured buffer size.  This is not as critical for Snappy
          // since Snappy always writes the compressed chunk size, so we always know the
          // correct buffer size to create.
          return configuration
                  .map(conf -> conf.getInt(IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY, IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_DEFAULT))
                  .orElse(IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_DEFAULT);
      }
  }
  