nl.welteninstituut.tel.la.importers.ImportTask.java Source code

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Here is the source code for nl.welteninstituut.tel.la.importers.ImportTask.java

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/*
 * Copyright (C) 2015 Open Universiteit Nederland
 *
 * This library 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
 * (at your option) any later version.
 *
 * This library 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
package nl.welteninstituut.tel.la.importers;

import java.util.List;

import javax.jdo.PersistenceManager;
import javax.jdo.Query;

import nl.welteninstituut.tel.la.Configuration;
import nl.welteninstituut.tel.la.jdomanager.PMF;
import nl.welteninstituut.tel.oauth.jdo.OauthServiceAccount;

import org.joda.time.DateTime;
import org.joda.time.LocalTime;

import com.google.appengine.api.taskqueue.DeferredTask;
import com.google.appengine.api.taskqueue.Queue;
import com.google.appengine.api.taskqueue.QueueFactory;
import com.google.appengine.api.taskqueue.TaskOptions;

public abstract class ImportTask implements DeferredTask {

    private static final long serialVersionUID = 1L;

    private final boolean useWorkingDays;
    private final LocalTime starttime;
    private final LocalTime endtime;

    protected ImportTask() {
        useWorkingDays = Configuration.getAsBoolean(Configuration.WORKING_DAYS, true);
        starttime = getTime(Configuration.START_TIME);
        endtime = getTime(Configuration.END_TIME);
    }

    protected OauthServiceAccount getAccount(final int serviceId, final String accountId) {
        PersistenceManager pm = PMF.get().getPersistenceManager();
        try {
            Query q = pm.newQuery(OauthServiceAccount.class);
            try {
                q.setFilter("serviceId == serviceIdParam");
                q.setFilter("accountId == accountIdParam");
                q.declareParameters("Integer serviceIdParam, String accountIdParam");

                @SuppressWarnings("unchecked")
                List<OauthServiceAccount> result = (List<OauthServiceAccount>) q.execute(serviceId, accountId);
                return result.isEmpty() ? null : result.get(0);
            } finally {
                q.closeAll();
            }

        } finally {
            pm.close();
        }
    }

    /**
     * Checks if the specified time is allowed according to the configuration
     * settings.
     *
     * @param dateTime
     *            the date time
     * @return true, if is time allowed
     */
    protected boolean isTimeAllowed(final DateTime dateTime) {
        if (useWorkingDays && dateTime.dayOfWeek().get() > 5) {
            return false;
        }

        LocalTime time = dateTime.toLocalTime();

        if (starttime != null && time.isBefore(starttime)) {
            return false;
        }

        if (endtime != null && time.isAfter(endtime)) {
            return false;
        }

        return true;
    }

    private LocalTime getTime(final String key) {
        String value = Configuration.get(key);
        return value == null ? null : LocalTime.parse(value);
    }

    public static void scheduleTask(final DeferredTask task) {
        // Add the task to the default queue.
        Queue queue = QueueFactory.getDefaultQueue();

        queue.add(TaskOptions.Builder.withPayload(task));
    }

}