com.jeffy.hdfs.compression.StreamCompressor.java Source code

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Here is the source code for com.jeffy.hdfs.compression.StreamCompressor.java

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/*
 * Copyright AsiaInfo Authors.
 * 
 * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
 */
package com.jeffy.hdfs.compression;

import java.io.IOException;

import org.apache.commons.io.IOUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.io.compress.CompressionOutputStream;
import org.apache.hadoop.util.ReflectionUtils;

/**
 * Hadoop?????
 * 
 * @author Jeffy<renwu58@gmail.com>
 *
 */
public class StreamCompressor {

    public static void main(String[] args) throws ClassNotFoundException, IOException {
        //
        String codecClassname = args[0];

        Class<?> codecClass = Class.forName(codecClassname);

        Configuration conf = new Configuration();

        CompressionCodec codec = (CompressionCodec) ReflectionUtils.newInstance(codecClass, conf);

        CompressionOutputStream out = codec.createOutputStream(System.out);

        IOUtils.copy(System.in, out);

        out.finish();

    }
}