org.apache.hadoop.hive.common.io.SortAndDigestPrintStream Maven / Gradle / Ivy
/**
* 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.hadoop.hive.common.io;
import org.apache.commons.codec.binary.Base64;
import java.io.OutputStream;
import java.security.MessageDigest;
public class SortAndDigestPrintStream extends SortPrintStream {
private final MessageDigest digest;
public SortAndDigestPrintStream(OutputStream out, String encoding) throws Exception {
super(out, encoding);
this.digest = MessageDigest.getInstance("MD5");
}
@Override
public void processFinal() {
while (!outputs.isEmpty()) {
String row = outputs.removeFirst();
digest.update(row.getBytes());
printDirect(row);
}
printDirect(new String(Base64.encodeBase64(digest.digest())));
digest.reset();
}
}