com.l2jfree.gameserver.AutoAnnouncements.java Source code

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Here is the source code for com.l2jfree.gameserver.AutoAnnouncements.java

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/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jfree.gameserver;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.List;
import java.util.concurrent.Future;

import javolution.util.FastList;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.l2jfree.L2DatabaseFactory;

public final class AutoAnnouncements {
    private static final Log _log = LogFactory.getLog(Announcements.class);

    public static AutoAnnouncements getInstance() {
        return SingletonHolder._instance;
    }

    private final List<AutoAnnouncer> _announcers = new FastList<AutoAnnouncer>();

    private AutoAnnouncements() {
        restore();
    }

    public void reload() {
        for (AutoAnnouncer exec : _announcers)
            exec.cancel();

        _announcers.clear();

        restore();
    }

    private void announce(String text) {
        Announcements.getInstance().announceToAll(text);

        _log.info("AutoAnnounce: " + text);
    }

    private void restore() {
        Connection conn = null;
        try {
            conn = L2DatabaseFactory.getInstance().getConnection();

            PreparedStatement statement = conn
                    .prepareStatement("SELECT initial, delay, cycle, memo FROM auto_announcements");
            ResultSet data = statement.executeQuery();

            while (data.next()) {
                final long initial = data.getLong("initial");
                final long delay = data.getLong("delay");
                final int repeat = data.getInt("cycle");
                final String[] memo = data.getString("memo").split("\n");

                _announcers.add(new AutoAnnouncer(memo, repeat, initial, delay));
            }

            data.close();
            statement.close();
        } catch (Exception e) {
            _log.fatal("AutoAnnoucements: Failed to load announcements data.", e);
        } finally {
            L2DatabaseFactory.close(conn);
        }

        _log.info("AutoAnnoucements: Loaded " + _announcers.size() + " Auto Annoucement Data.");
    }

    private final class AutoAnnouncer implements Runnable {
        private final String[] memo;
        private final Future<?> task;

        private int repeat;

        private AutoAnnouncer(String[] memo, int repeat, long initial, long delay) {
            this.memo = memo;

            if (repeat > 0)
                this.repeat = repeat;
            else
                this.repeat = -1;

            task = ThreadPoolManager.getInstance().scheduleAtFixedRate(this, initial * 1000, delay * 1000);
        }

        private void cancel() {
            task.cancel(false);
        }

        @Override
        public void run() {
            for (String text : memo)
                announce(text);

            if (repeat > 0)
                repeat--;

            if (repeat == 0)
                cancel();
        }
    }

    @SuppressWarnings("synthetic-access")
    private static class SingletonHolder {
        protected static final AutoAnnouncements _instance = new AutoAnnouncements();
    }
}