ValidateExecutor.java

/**
 * Copyright (c) Codice Foundation
 * <p>
 * This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 * <p>
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package org.codice.ddf.commands.catalog.validation;

import java.util.Collections;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ForkJoinPool;
import java.util.stream.Collectors;

import ddf.catalog.data.Metacard;
import ddf.catalog.util.Describable;
import ddf.catalog.validation.MetacardValidator;
import ddf.catalog.validation.ValidationException;

public class ValidateExecutor {

    public static List<ValidateReport> execute(List<Metacard> metacards,
            List<MetacardValidator> validators) throws ExecutionException, InterruptedException {

        ForkJoinPool forkJoinPool = new ForkJoinPool();
        List<ValidateReport> results;
        results = forkJoinPool.submit(() -> metacards.stream()
                .parallel()
                .map(metacard -> generateReport(metacard, validators))
                .collect(Collectors.toList()))
                .get();
        return results;
    }

    private static ValidateReport generateReport(Metacard metacard,
            List<MetacardValidator> validators) {

        ValidateReport report = new ValidateReport(metacard.getTitle());

        for (MetacardValidator validator : validators) {
            try {
                validator.validate(metacard);
            } catch (ValidationException e) {
                String name = validator.getClass()
                        .getName();
                if (validator instanceof Describable && ((Describable) validator).getId() != null) {
                    name = ((Describable) validator).getId();
                }
                List<String> warnings =
                        e.getWarnings() == null ? Collections.emptyList() : e.getWarnings();
                List<String> errors =
                        e.getErrors() == null ? Collections.emptyList() : e.getErrors();
                report.addEntry(new ValidateReportEntry(name, errors, warnings));
            }
        }

        return report;
    }
}