source: java/main/src/main/java/com/framsticks/test/PrimeExperiment.java @ 103

package com.framsticks.test;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

import com.framsticks.core.ValueChange;
import com.framsticks.experiment.Experiment;
import com.framsticks.experiment.WorkPackageLogic;
import com.framsticks.params.EventListener;
import com.framsticks.params.EventListeners;
import com.framsticks.params.annotations.FramsClassAnnotation;
import com.framsticks.params.annotations.ParamAnnotation;
import com.framsticks.test.prime.ExpParams;
import com.framsticks.test.prime.PrimePackage;
import com.framsticks.util.FramsticksException;
import com.framsticks.util.dispatching.Future;

@FramsClassAnnotation
public class PrimeExperiment extends Experiment {
        private static final Logger log = LogManager.getLogger(PrimeExperiment.class);

        @ParamAnnotation
        public final WorkPackageLogic<PrimePackage> workPackageLogic;

        final PrimePackage task = new PrimePackage();

        protected int step = 100;

        protected int nextWaitNumber = 1;
        protected List<PrimePackage> waitingPackages = new LinkedList<>();
        protected List<Integer> primes = new LinkedList<>();

        protected final EventListeners<ValueChange> primesListeners = new EventListeners<>();

        /**
         *
         */
        public PrimeExperiment() {
                setExpdef("prime");

                task.params.from_number = 1;
                task.params.to_number = 1000;
                task.state.current_number = 1;

                workPackageLogic = new WorkPackageLogic<PrimePackage>(this, PrimePackage.class) {

                        @Override
                        protected void generateNextPackage(Future<PrimePackage> future) {
                                assert isActive();
                                if (task.state.current_number > task.params.to_number) {
                                        log.debug("no more packages in range left");
                                        future.pass(null);
                                        return;
                                }

                                PrimePackage wp = PrimePackage.compose(task.state.current_number, Math.min(task.params.to_number, task.state.current_number + step - 1));

                                task.state.current_number += step;

                                log.debug("generated package: {}", wp.getShortDescription());

                                future.pass(wp);
                        }

                        @Override
                        protected void returnPackage(PrimePackage result) {
                                log.debug("returned package: {}", result);

                                if (tryAddResult(result)) {
                                        while (tryMergeWaitingPackages()) {
                                        }
                                } else if (result.params.from_number > nextWaitNumber) {
                                        waitingPackages.add(result);
                                }

                                try {
                                        isComplete();
                                } catch (FramsticksException e) {
                                        log.debug("experiment is not done yet: {}", e.getShortMessage(new StringBuilder()));
                                        return;
                                }
                                log.info("experiment is done, {} primes found", primes.size());
                                log.debug("primes: {}", primes);
                        }
                };
        }

        protected boolean tryAddResult(PrimePackage result) {
                if (result.params.from_number > nextWaitNumber) {
                        return false;
                }
                if (result.params.from_number < nextWaitNumber) {
                        throw new FramsticksException().msg("duplicate result").arg("result", result);
                }

                primes.addAll(result.state.getResultList());
                nextWaitNumber = result.params.to_number + 1;

                primesListeners.actionForAll(new ValueChange(getDescription()));

                return true;
        }

        protected boolean tryMergeWaitingPackages() {
                Iterator<PrimePackage> i = waitingPackages.iterator();
                while (i.hasNext()) {
                        if (tryAddResult(i.next())) {
                                i.remove();
                                return true;
                        }
                }
                return false;
        }

        protected void isComplete() {
                if (nextWaitNumber - 1 != task.params.to_number) {
                        throw new FramsticksException().msg("not ready yet").arg("done to", nextWaitNumber - 1);
                }
        }

        /**
         * @return the maxNumber
         */
        @ParamAnnotation
        public int getMaxNumber() {
                return task.params.to_number;
        }

        /**
         * @param maxNumber the maxNumber to set
         */
        @ParamAnnotation
        public void setMaxNumber(int maxNumber) {
                task.params.to_number = maxNumber;
        }

        @ParamAnnotation
        public String getDescription() {
                return primes.size() + " found in range " + new ExpParams(task.params.from_number, nextWaitNumber - 1);
        }

        @ParamAnnotation(id = "description_changed")
        public void addPrimesListener(EventListener<ValueChange> listener) {
                primesListeners.add(listener);
        }

        @ParamAnnotation(id = "description_changed")
        public void removePrimesListener(EventListener<ValueChange> listener) {
                primesListeners.remove(listener);
        }

}