org.opentripplanner.transit.raptor.rangeraptor.multicriteria.DebugStopArrivalsStatistics Maven / Gradle / Ivy

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The OpenTripPlanner multimodal journey planning system
There is a newer version: 2.5.0
package org.opentripplanner.transit.raptor.rangeraptor.multicriteria;

import static java.util.Locale.ROOT;
import static org.opentripplanner.transit.raptor.api.debug.DebugTopic.STOP_ARRIVALS_STATISTICS;

import org.opentripplanner.transit.raptor.api.debug.DebugLogger;


/**
 * Utility class to print some statistics about stop arrivals.
 */
class DebugStopArrivalsStatistics {
    private final DebugLogger debugLogger;
    private static boolean firstTime = true;



    DebugStopArrivalsStatistics(DebugLogger debugLogger) {
        this.debugLogger = debugLogger;
    }

    void debugStatInfo(StopArrivalParetoSet[] stops) {
        if(!debugLogger.isEnabled(STOP_ARRIVALS_STATISTICS)) return;

        long total = 0;
        long arrayLen = 0;
        long numOfStops = 0;
        int max = 0;

        for (StopArrivalParetoSet stop : stops) {
            if(stop != null) {
                ++numOfStops;
                total += stop.size();
                max = Math.max(stop.size(), max);
                arrayLen += stop.internalArrayLength();
            }
        }
        double avg = ((double)total) / numOfStops;
        double arrayLenAvg = ((double)arrayLen) / numOfStops;

        if(firstTime) {
            debugLogger.debug(
                    STOP_ARRIVALS_STATISTICS,
                    "Debug stop arrivals statistics. The number logged are: \n" +
                    "  - For each stop the number of arrivals logged with:\n" +
                    "    - Avarage number of arrivals for stops visited.\n" +
                    "    - The maximum numbers of arriavels for any stop.\n" +
                    "    - The total number of stop arrivals.\n" +
                    "  - The capasity(array length) used.\n" +
                    "    - The avarage array length for stops visited.\n" +
                    "    - The total array length allocated.\n" +
                    "  - The number of stops:\n" +
                    "    - The number of stops visited.\n" +
                    "    - The total number of stops.\n"
            );
            firstTime = false;
        }
        debugLogger.debug(
                STOP_ARRIVALS_STATISTICS,
                "Arrivals %5s %3s %6s (avg/max/tot)  -  Array Length: %5s %5s (avg/tot) -  Stops: %5s %5s (visited/tot)",
                toStr(avg), toStr(max), toStr(total),
                toStr(arrayLenAvg), toStr(arrayLen),
                toStr(numOfStops), toStr(stops.length)
        );
    }


    private static String toStr(long number) {
        if(number > 1_000_000) {
            return toStr(number/1_000_000.0) + "\"";
        }
        if(number > 1_000) {
            return toStr(number/1_000.0) + "'";
        }
        return Long.toString(number);
    }

    private static String toStr(double number) {
        if(number > 10) {
            return String.format(ROOT, "%.0f", number);
        }
        return String.format(ROOT, "%.1f", number);
    }
}