Throttle data being written

/*

 * Copyright (c) 2006-2008 North Concepts Inc.  All rights reserved.

 * Proprietary and Confidential.  Use is subject to license terms.

 *

 * http://northconcepts.com/data-pipeline/licensing/

 *

 */

package com.northconcepts.datapipeline.examples.cookbook;



import java.io.File;



import org.apache.log4j.Logger;



import com.northconcepts.datapipeline.core.DataEndpoint;

import com.northconcepts.datapipeline.core.DataReader;

import com.northconcepts.datapipeline.core.DataWriter;

import com.northconcepts.datapipeline.csv.CSVReader;

import com.northconcepts.datapipeline.csv.CSVWriter;

import com.northconcepts.datapipeline.job.JobTemplate;

import com.northconcepts.datapipeline.throttle.ThrottledWriter;



public class ThrottleDataBeingWritten {

    

    public static final Logger log = DataEndpoint.log; 



    private static final int MAX_BYTES_PER_SECOND = 256;



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

        DataReader reader = new CSVReader(new File("credit-balance.csv"))

            .setFieldNamesInFirstRow(true);

        

        DataWriter writer = new CSVWriter(new File("credit-balance4.csv"))

            .setFieldNamesInFirstRow(true);



        ThrottledWriter throttledWriter = new ThrottledWriter(writer, MAX_BYTES_PER_SECOND);



        JobTemplate.DEFAULT.transfer(reader, throttledWriter);

        

        log.debug("write rate: " + throttledWriter.getMeter().getUnitsPerSecondAsString());

    }



}
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