D-Net

package eu.dnetlib.dhp.common.counter;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Properties;

/**

 * Writer of {@link NamedCounters} object into a properties file.

 * 

 * @author madryk

 */

public class NamedCountersFileWriter {

    //------------------------ LOGIC --------------------------

    /**

     * Writes {@link NamedCounters} as a properties file located under

     * provided filePath.

     * 

     * @throws IOException if writing to properties file resulted in an error

     */

    public void writeCounters(NamedCounters counters, String filePath) throws IOException {

        Properties counterProperties = buildPropertiesFromCounters(counters);

        File file = new File(filePath);

        try (OutputStream os = new FileOutputStream(file)) {

            counterProperties.store(os, null);

        }

    }

    //------------------------ PRIVATE --------------------------

    private Properties buildPropertiesFromCounters(NamedCounters counters) {

        Properties properties = new Properties();

        for (String counterName : counters.counterNames()) {

            long count = counters.currentValue(counterName);

            properties.put(counterName, String.valueOf(count));

        }

        return properties;

    }

}