Fetch.java

package org.code_house.webconsole.monitor.jmx;

import org.joda.time.DateTime;
import org.rrd4j.ConsolFun;
import org.rrd4j.core.FetchData;
import org.rrd4j.core.FetchRequest;
import org.rrd4j.core.RrdDb;
import org.rrd4j.core.Util;

public class Fetch {

    public static void main(String[] args) throws Exception {
        String file = "jmx-memory.rrd";

        RrdDb db = new RrdDb(file);

        long now = Util.getTimestamp() - 1;
        long back = Util.getTimestamp() - 300;


        FetchRequest request = db.createFetchRequest(ConsolFun.AVERAGE, back, now);
        FetchData data = request.fetchData();

        long[] timestamps = data.getTimestamps();
        for (String ds : data.getDsNames()) {
            for (int i = 0; i < timestamps.length; i++) {
                System.out.println(ds + " " + new DateTime(timestamps[i] * 1000).toString("dd.MM.YYYY HH:mm:ss") + " " + data.getValues(ds)[i]);
            }
            System.out.println("-");
        }


    }
}