SynchronizeTwitterMessageListener.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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 2.1 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.
 */

package com.liferay.twitter.internal.model.listener;

import com.liferay.portal.configuration.metatype.bnd.util.ConfigurableUtil;
import com.liferay.portal.kernel.messaging.BaseMessageListener;
import com.liferay.portal.kernel.messaging.DestinationNames;
import com.liferay.portal.kernel.messaging.Message;
import com.liferay.portal.kernel.scheduler.SchedulerEngineHelper;
import com.liferay.portal.kernel.scheduler.SchedulerEntry;
import com.liferay.portal.kernel.scheduler.SchedulerEntryImpl;
import com.liferay.portal.kernel.scheduler.TimeUnit;
import com.liferay.portal.kernel.scheduler.Trigger;
import com.liferay.portal.kernel.scheduler.TriggerFactory;
import com.liferay.twitter.configuration.TwitterGroupServiceConfiguration;
import com.liferay.twitter.service.FeedLocalService;

import java.util.Map;

import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.osgi.service.component.annotations.Modified;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Brian Wing Shun Chan
 * @author Peter Fellwock
 */
@Component(
	configurationPid = "com.liferay.twitter.configuration.TwitterConfiguration",
	configurationPolicy = ConfigurationPolicy.OPTIONAL, immediate = true,
	service = SynchronizeTwitterMessageListener.class
)
public class SynchronizeTwitterMessageListener extends BaseMessageListener {

	@Activate
	@Modified
	protected void activate(Map<String, Object> properties) {
		_twitterGroupServiceConfiguration = ConfigurableUtil.createConfigurable(
			TwitterGroupServiceConfiguration.class, properties);

		Class<?> clazz = getClass();

		String className = clazz.getName();

		Trigger trigger = _triggerFactory.createTrigger(
			className, className, null, null,
			_twitterGroupServiceConfiguration.twitterSynchronizationInterval(),
			TimeUnit.MINUTE);

		SchedulerEntry schedulerEntry = new SchedulerEntryImpl(
			className, trigger);

		_schedulerEngineHelper.register(
			this, schedulerEntry, DestinationNames.SCHEDULER_DISPATCH);
	}

	@Override
	protected void doReceive(Message message) throws Exception {
		_feedLocalService.updateFeeds();
	}

	@Reference(unbind = "-")
	protected void setFeedLocalService(FeedLocalService feedLocalService) {
		_feedLocalService = feedLocalService;
	}

	@Reference(unbind = "-")
	protected void setSchedulerEngineHelper(
		SchedulerEngineHelper schedulerEngineHelper) {

		_schedulerEngineHelper = schedulerEngineHelper;
	}

	@Reference(unbind = "-")
	protected void setTriggerFactory(TriggerFactory triggerFactory) {
	}

	private static volatile TwitterGroupServiceConfiguration
		_twitterGroupServiceConfiguration;

	private FeedLocalService _feedLocalService;
	private SchedulerEngineHelper _schedulerEngineHelper;

	@Reference
	private TriggerFactory _triggerFactory;

}