com.github.rinde.gpem17.eval.SimRuntimeLogger.java Source code

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Here is the source code for com.github.rinde.gpem17.eval.SimRuntimeLogger.java

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/*
 * Copyright (C) 2011-2016 Rinde van Lon, iMinds-DistriNet, KU Leuven
 *
 * Licensed 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 com.github.rinde.gpem17.eval;

import java.io.File;
import java.io.IOException;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.math3.stat.descriptive.moment.StandardDeviation;
import org.joda.time.Period;
import org.joda.time.format.ISODateTimeFormat;
import org.joda.time.format.PeriodFormat;

import com.github.rinde.rinsim.experiment.Experiment.SimulationResult;
import com.github.rinde.rinsim.experiment.ExperimentResults;
import com.github.rinde.rinsim.experiment.MASConfiguration;
import com.github.rinde.rinsim.experiment.ResultListener;
import com.github.rinde.rinsim.scenario.Scenario;
import com.google.common.base.Charsets;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.common.math.DoubleMath;

/**
 * 
 * @author Rinde van Lon
 */
public class SimRuntimeLogger implements ResultListener {
    final File progressFile;
    int receivedSims;
    int totalSims;

    long lastWrite;

    List<SimulationResult> receivedResults;

    SimRuntimeLogger(File dir) {
        progressFile = new File(dir, "progress.csv");
        receivedResults = new ArrayList<>();
    }

    @Override
    public void startComputing(int numberOfSimulations, ImmutableSet<MASConfiguration> configurations,
            ImmutableSet<Scenario> scenarios, int repetitions, int seedRepetitions) {
        totalSims = numberOfSimulations;
    }

    @Override
    public void receive(SimulationResult result) {
        receivedSims++;
        receivedResults.add(result);
        if (System.currentTimeMillis() - lastWrite >= 60000 || receivedSims == totalSims) {
            write();
        }
    }

    void write() {
        lastWrite = System.currentTimeMillis();
        StringBuilder sb = new StringBuilder();
        String timestamp = ISODateTimeFormat.dateHourMinuteSecond().print(lastWrite);

        long sum = 0;
        double[] arr = new double[receivedResults.size()];
        for (int i = 0; i < receivedResults.size(); i++) {
            SimResult info = (SimResult) receivedResults.get(i).getResultObject();
            sum += info.getStats().computationTime;
            arr[i] = info.getStats().computationTime;
        }
        double mean = sum / receivedResults.size();
        long sd = DoubleMath.roundToLong(new StandardDeviation().evaluate(arr, mean), RoundingMode.HALF_DOWN);
        long longMean = DoubleMath.roundToLong(mean, RoundingMode.HALF_DOWN);

        sb.append(timestamp).append(",").append(receivedSims).append("/").append(totalSims).append(", Received ")
                .append(receivedResults.size()).append(" results in last minute, avg comp time,")
                .append(PeriodFormat.getDefault().print(new Period(longMean))).append(", standard deviation,")
                .append(PeriodFormat.getDefault().print(new Period(sd))).append(System.lineSeparator());
        try {
            Files.append(sb.toString(), progressFile, Charsets.UTF_8);
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
        receivedResults.clear();
    }

    @Override
    public void doneComputing(ExperimentResults results) {
    }

}