io.covert.binary.analysis.BuildSequenceFile.java Source code

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Here is the source code for io.covert.binary.analysis.BuildSequenceFile.java

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/*
 * 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 io.covert.binary.analysis;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.SequenceFile.CompressionType;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

public class BuildSequenceFile extends Configured implements Tool {

    public static void main(String[] args) throws Exception {

        ToolRunner.run(new BuildSequenceFile(), args);
    }

    @Override
    public int run(String[] args) throws Exception {

        File inDir = new File(args[0]);
        Path name = new Path(args[1]);

        Text key = new Text();
        BytesWritable val = new BytesWritable();

        Configuration conf = getConf();
        FileSystem fs = FileSystem.get(conf);
        SequenceFile.Writer writer = SequenceFile.createWriter(fs, conf, name, Text.class, BytesWritable.class,
                CompressionType.RECORD);

        for (File file : inDir.listFiles()) {
            if (!file.isFile()) {
                System.out.println("Skipping " + file + " (not a file) ...");
                continue;
            }

            FileInputStream fileIn = new FileInputStream(file);
            ByteArrayOutputStream bytesOut = new ByteArrayOutputStream((int) file.length());
            int b;
            while (-1 != (b = fileIn.read())) {
                bytesOut.write(b);
            }
            fileIn.close();
            bytesOut.close();
            byte[] bytes = bytesOut.toByteArray();

            val.set(bytes, 0, bytes.length);
            key.set(file.getName());

            writer.append(key, val);
        }
        writer.close();

        return 0;
    }
}