jstorm-core/src/main/java/backtype/storm/utils/CRC32OutputStream.java

/**
 * 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 backtype.storm.utils;

import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.CRC32;

public class CRC32OutputStream extends OutputStream {
    private CRC32 hasher;

    public CRC32OutputStream() {
        hasher = new CRC32();
    }

    public long getValue() {
        return hasher.getValue();
    }

    @Override
    public void write(int i) throws IOException {
        hasher.update(i);
    }

    @Override
    public void write(byte[] bytes, int start, int end) throws IOException {
        hasher.update(bytes, start, end);
    }
}