package org.apache.cassandra.io.util; /* * * 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 java.io.IOException; import java.io.OutputStream; import java.util.zip.Checksum; public class ChecksummedOutputStream extends OutputStream { private final OutputStream out; private final Checksum checksum; public ChecksummedOutputStream(OutputStream out, Checksum checksum) { this.out = out; this.checksum = checksum; } public void resetChecksum() { checksum.reset(); } public void write(int b) throws IOException { out.write(b); checksum.update(b); } @Override public void write(byte[] b, int off, int len) throws IOException { out.write(b, off, len); checksum.update(b, off, len); } }