BoundleLoaderObjects.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.plugins.impl;

import com.freedomotic.api.Client;
import com.freedomotic.app.Freedomotic;
import com.freedomotic.exceptions.PluginLoadingException;
import com.freedomotic.util.JarFilter;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Loads plugin that are freedomotic objects
 *
 * @author Enrico Nicoletti
 */
class BoundleLoaderObjects implements BoundleLoader {

    private static final Logger LOG = LoggerFactory.getLogger(BoundleLoaderObjects.class.getName());
    private File path;

    BoundleLoaderObjects(File path) {
        this.path = path;
    }

    /**
     * Loads all plugins from filesystem. Note that this method always return an
     * empty list of object as the
     */
    @Override
    public List<Client> loadBoundle()
            throws PluginLoadingException {
        File pluginFolder = new File(path.getAbsolutePath());
        List<Client> results = new ArrayList<>();

        if (pluginFolder.isFile()) {
            //return an empty list
            return results;
        }

        //the list of jars in the current folder
        File[] jarList = pluginFolder.listFiles(new JarFilter());

        if (jarList != null) {
            //the list of files in the jar
            for (File jar : jarList) {
                if (jar.isFile()) {
                    List<String> classNames = null;

                    try {
                        classNames = BoundleLoaderFactory.getClassesInside(jar.getAbsolutePath());
                    } catch (IOException ex) {
                        LOG.error("Error loading classes", Freedomotic.getStackTraceInfo(ex));
                    }

                    for (String className : classNames) {
                        String name = className.substring(0, className.length() - 6);
                        Class clazz;

                        try {
                            clazz = BoundleLoaderFactory.getClass(jar, name);

                            if (clazz.getName().startsWith("com.freedomotic.things.")
                                    && !clazz.getName().contains("$")) {
                                if (LOG.isDebugEnabled()) {
                                    LOG.debug("Found object plugin \"{}\" in \"{}\"", new Object[]{clazz.getSimpleName(), path});
                                }
                            }
                        } catch (Exception ex) {
                            LOG.error("Error loading thing plugin", Freedomotic.getStackTraceInfo(ex));
                        }
                    }
                }
            }
        } else {
            LOG.warn("No object can be found in folder \"{}\"", pluginFolder.getAbsolutePath());
        }

        return results;
    }

    @Override
    public File getPath() {
        return path;
    }
}