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Timefold solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the Spring Boot autoconfigure.

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package ai.timefold.solver.spring.boot.autoconfigure.config;

import java.time.Duration;
import java.util.Map;
import java.util.TreeSet;

public class TerminationProperties {

    /**
     * How long the solver can run.
     * For example: "30s" is 30 seconds. "5m" is 5 minutes. "2h" is 2 hours. "1d" is 1 day.
     * Also supports ISO-8601 format, see java.time.Duration.
     */
    private Duration spentLimit;
    /**
     * How long the solver can run without finding a new best solution after finding a new best solution.
     * For example: "30s" is 30 seconds. "5m" is 5 minutes. "2h" is 2 hours. "1d" is 1 day.
     * Also supports ISO-8601 format, see java.time.Duration.
     */
    private Duration unimprovedSpentLimit;
    /**
     * Terminates the solver when a specific or higher score has been reached.
     * For example: "0hard/-1000soft" terminates when the best score changes from "0hard/-1200soft" to "0hard/-900soft".
     * Wildcards are supported to replace numbers.
     * For example: "0hard/*soft" to terminate when any feasible score is reached.
     */
    private String bestScoreLimit;

    // ************************************************************************
    // Getters/setters
    // ************************************************************************

    public Duration getSpentLimit() {
        return spentLimit;
    }

    public void setSpentLimit(Duration spentLimit) {
        this.spentLimit = spentLimit;
    }

    public Duration getUnimprovedSpentLimit() {
        return unimprovedSpentLimit;
    }

    public void setUnimprovedSpentLimit(Duration unimprovedSpentLimit) {
        this.unimprovedSpentLimit = unimprovedSpentLimit;
    }

    public String getBestScoreLimit() {
        return bestScoreLimit;
    }

    public void setBestScoreLimit(String bestScoreLimit) {
        this.bestScoreLimit = bestScoreLimit;
    }

    public void loadProperties(Map properties) {
        // Check if the keys are valid
        var invalidKeySet = new TreeSet<>(properties.keySet());
        invalidKeySet.removeAll(TerminationProperty.getValidPropertyNames());

        if (!invalidKeySet.isEmpty()) {
            throw new IllegalStateException("""
                    The termination properties [%s] are not valid.
                    Maybe try changing the property name to kebab-case.
                    Here is the list of valid properties: %s"""
                    .formatted(invalidKeySet, String.join(", ", TerminationProperty.getValidPropertyNames())));
        }
        properties.forEach(this::loadProperty);
    }

    private void loadProperty(String key, Object value) {
        if (value == null) {
            return;
        }
        var property = TerminationProperty.forPropertyName(key);
        property.update(this, value);
    }

}