/*
* Copyright (c) 2009, 2010, 2011, 2012, B3log Team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.b3log.solo.event.plugin;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.b3log.latke.event.AbstractEventListener;
import org.b3log.latke.event.Event;
import org.b3log.latke.event.EventException;
import org.b3log.latke.plugin.AbstractPlugin;
import org.b3log.latke.plugin.PluginManager;
import org.b3log.latke.repository.Transaction;
import org.b3log.solo.repository.PluginRepository;
import org.b3log.solo.repository.impl.PluginRepositoryImpl;
import org.b3log.solo.util.Plugins;
/**
* This listener is responsible for refreshing plugin after every loaded.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.0.1, Nov 28, 2011
* @since 0.3.1
*/
public final class PluginRefresher extends AbstractEventListener<List<AbstractPlugin>> {
/**
* Logger.
*/
private static final Logger LOGGER =
Logger.getLogger(PluginRefresher.class.getName());
/**
* Plugin repository.
*/
private PluginRepository pluginRepository =
PluginRepositoryImpl.getInstance();
@Override
public void action(final Event<List<AbstractPlugin>> event) throws
EventException {
final List<AbstractPlugin> plugins = event.getData();
LOGGER.log(Level.FINER,
"Processing an event[type={0}, data={1}] in listener[className={2}]",
new Object[]{event.getType(), plugins,
PluginRefresher.class.getName()});
final Transaction transaction = pluginRepository.beginTransaction();
transaction.clearQueryCache(false);
try {
Plugins.refresh(plugins);
transaction.commit();
} catch (final Exception e) {
if (transaction.isActive()) {
transaction.rollback();
}
LOGGER.log(Level.SEVERE, "Processing plugin loaded event error", e);
throw new EventException(e);
}
}
/**
* Gets the event type {@linkplain PluginManager#PLUGIN_LOADED_EVENT}.
*
* @return event type
*/
@Override
public String getEventType() {
return PluginManager.PLUGIN_LOADED_EVENT;
}
}