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.hints;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.nio.channels.FileChannel;
  import java.util.zip.CRC32;
  import javax.crypto.Cipher;
  
  import com.google.common.annotations.VisibleForTesting;
  
  import org.apache.cassandra.io.util.File;
  import org.apache.cassandra.security.EncryptionUtils;
  import org.apache.cassandra.io.compress.ICompressor;
  
  import static org.apache.cassandra.utils.FBUtilities.updateChecksum;
  
  public class EncryptedHintsWriter extends HintsWriter
  {
      private final Cipher cipher;
      private final ICompressor compressor;
      private volatile ByteBuffer byteBuffer;
  
      protected EncryptedHintsWriter(File directory, HintsDescriptor descriptor, File file, FileChannel channel, int fd, CRC32 globalCRC)
      {
          super(directory, descriptor, file, channel, fd, globalCRC);
          cipher = descriptor.getCipher();
          compressor = descriptor.createCompressor();
      }
  
      protected void writeBuffer(ByteBuffer input) throws IOException
      {
          byteBuffer = EncryptionUtils.compress(input, byteBuffer, true, compressor);
          ByteBuffer output = EncryptionUtils.encryptAndWrite(byteBuffer, channel, true, cipher);
          updateChecksum(globalCRC, output);
      }
  
      @VisibleForTesting
      Cipher getCipher()
      {
          return cipher;
      }
  
      @VisibleForTesting
      ICompressor getCompressor()
      {
          return compressor;
      }
  }
  