com.awcoleman.ExampleJobSummaryLogWithOutput.utility.CreateBinaryDatafile.java Source code

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Here is the source code for com.awcoleman.ExampleJobSummaryLogWithOutput.utility.CreateBinaryDatafile.java

Source

package com.awcoleman.ExampleJobSummaryLogWithOutput.utility;

import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.Random;

import org.apache.commons.lang3.RandomStringUtils;

/*
 * Create a sample datafile to read in with the custom InputFormat
 * 
 * Datafile will not be splittable since there is no specific record marker
 * 
 * name,recid,eventType,eventDurationSec,endDatetime
 * string,long,int,int,string
 * 
 * @author awcoleman
 * @version 20150624
 * license: Apache License 2.0; http://www.apache.org/licenses/LICENSE-2.0
 */
public class CreateBinaryDatafile {

    public CreateBinaryDatafile(int numrecs) throws IOException {

        Random rangen = new Random();
        long recid = 0;
        try (DataOutputStream out = new DataOutputStream(new FileOutputStream("/tmp/sampleDatafile.bin"));) {

            for (int ii = 0; ii < numrecs; ii++) {
                out.writeUTF(RandomStringUtils.randomAlphabetic(10));
                out.writeLong(++recid);
                out.writeInt(rangen.nextInt(32));
                out.writeInt(rangen.nextInt(3600));
                out.writeUTF(generateDatetime());
            }
        }
    }

    public String generateDatetime() {
        long offset = Timestamp.valueOf("2015-02-21 00:00:00").getTime();
        long end = Timestamp.valueOf("2015-02-24 00:00:00").getTime();
        long diff = end - offset + 1;
        Timestamp rand = new Timestamp(offset + (long) (Math.random() * diff));

        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddkkmmss.SSS");

        return sdf.format(rand);
    }

    public static void main(String[] args) throws IOException {
        CreateBinaryDatafile mainObj = new CreateBinaryDatafile(200);
    }

}