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();
    }
}
