content: package org.apache.bookkeeper.proto.checksum;
  
  /*
  * 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.
  */
  
  import com.scurrilous.circe.checksum.Crc32cIntChecksum;
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.ByteBufAllocator;
  import lombok.extern.slf4j.Slf4j;
  
  @Slf4j
  class CRC32CDigestManager extends DigestManager {
  
      public CRC32CDigestManager(long ledgerId, boolean useV2Protocol, ByteBufAllocator allocator) {
          super(ledgerId, useV2Protocol, allocator);
      }
  
      @Override
      int getMacCodeLength() {
          return 4;
      }
  
      @Override
      boolean isInt32Digest() {
          return true;
      }
  
      @Override
      void populateValueAndReset(int digest, ByteBuf buf) {
          buf.writeInt(digest);
      }
  
      @Override
      int internalUpdate(int digest, ByteBuf data, int offset, int len) {
          return Crc32cIntChecksum.resumeChecksum(digest, data, offset, len);
      }
  
      @Override
      int internalUpdate(int digest, byte[] buffer, int offset, int len) {
          return Crc32cIntChecksum.resumeChecksum(digest, buffer, offset, len);
      }
  
      @Override
      boolean acceptsMemoryAddressBuffer() {
          return Crc32cIntChecksum.acceptsMemoryAddressBuffer();
      }
  }
  