JoinPlugin.java

/**
 *
 * Copyright (c) 2009-2016 Freedomotic team http://freedomotic.com
 *
 * This file is part of Freedomotic
 *
 * 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 2, 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
 * Freedomotic; see the file COPYING. If not, see
 * <http://www.gnu.org/licenses/>.
 */
package com.freedomotic.core;

import com.freedomotic.api.Plugin;
import com.freedomotic.app.Freedomotic;
import com.freedomotic.bus.BusConsumer;
import com.freedomotic.bus.BusMessagesListener;
import com.freedomotic.bus.BusService;
import com.freedomotic.model.ds.Config;
import com.freedomotic.plugins.ClientStorage;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.slf4j.LoggerFactory;
import javax.jms.JMSException;
import javax.jms.ObjectMessage;
import org.slf4j.Logger;

/**
 *
 * @author Enrico Nicoletti
 */
@Singleton
public class JoinPlugin
        implements BusConsumer {

    private static final Logger LOG = LoggerFactory.getLogger(JoinPlugin.class.getName());
    private static final String MESSAGING_CHANNEL = "app.objects.create";
    private static BusMessagesListener listener;

    //dependency
    private ClientStorage clientStorage;
    private BusService busService;

    private static String getMessagingChannel() {
        return MESSAGING_CHANNEL;
    }

    @Inject
    private JoinPlugin(BusService busService, ClientStorage clientStorage) {
        this.clientStorage = clientStorage;
        this.busService = busService;
        register();
    }

    /**
     * Register one or more channels to listen to
     */
    private void register() {
        listener = new BusMessagesListener(this, busService);
        listener.consumeCommandFrom(getMessagingChannel());
    }

    @Override
    public void onMessage(ObjectMessage message) {
        try {
            //here a plugin manifest is expected
            Config manifest = (Config) message.getObject();
            Plugin plugin = new Plugin(manifest.getProperty("name"), manifest);
            clientStorage.add(plugin);
            LOG.info("Enqueued remote plugin \"{}\"", plugin.getName());
        } catch (JMSException ex) {
            LOG.error("Join Plugin receives a not valid plugin manifest", Freedomotic.getStackTraceInfo(ex));
        }
    }
}