Activator.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008, Red Hat Middleware LLC, and others contributors as indicated
 * by the @authors tag. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package org.savara.tools.common.osgi;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.savara.protocol.util.ProtocolServices;
import org.savara.tools.common.eclipse.BundleRegistry;
import org.savara.tools.common.generation.Generator;
import org.savara.tools.common.generation.ui.GenerateDialog;
import org.scribble.protocol.export.DefaultProtocolExportManager;
import org.scribble.protocol.parser.DefaultProtocolParserManager;
import org.scribble.protocol.parser.ProtocolParser;
import org.scribble.protocol.parser.antlr.ANTLRProtocolParser;
import org.scribble.protocol.projection.impl.ProtocolProjectorImpl;
import org.scribble.protocol.validation.DefaultProtocolValidationManager;
import org.scribble.protocol.validation.rules.DefaultProtocolComponentValidator;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.savara.tools.core";

	// The shared instance
	private static Activator plugin;
	
	private static final Logger LOG=Logger.getLogger(Activator.class.getName());
	
    /**
	 * The constructor
	 */
	public Activator() {
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		
        ProtocolServices.setParserManager(new DefaultProtocolParserManager());

        ANTLRProtocolParser pp=new ANTLRProtocolParser();
        
        ProtocolServices.getParserManager().getParsers().add(pp);
        
        ProtocolServices.setProtocolProjector(new ProtocolProjectorImpl());
        
        ProtocolServices.setValidationManager(new DefaultProtocolValidationManager());
        ProtocolServices.getValidationManager().setProtocolProjector(ProtocolServices.getProtocolProjector());
        ProtocolServices.getValidationManager().getValidators().add(new DefaultProtocolComponentValidator());
        
        ProtocolServices.setProtocolExportManager(new DefaultProtocolExportManager());
        ProtocolServices.getProtocolExportManager().getExporters().add(
        		new org.scribble.protocol.export.text.TextProtocolExporter());
        ProtocolServices.getProtocolExportManager().getExporters().add(
        		new org.scribble.protocol.export.monitor.MonitorProtocolExporter());
        
		try {
			// Initialize list of generators
			IExtensionRegistry registry = Platform.getExtensionRegistry();
			IExtensionPoint point = registry.getExtensionPoint("org.savara.tools.common.generation.Generator");
	
			if (point != null) {
				IExtension[] extensions = point.getExtensions();
				
				for (int i = 0; i < extensions.length; i++) {
					for (int j=0; j < extensions[i].getConfigurationElements().length; j++) {
						
						if (extensions[i].getConfigurationElements()[j].getName().equals("generator")) {
							IConfigurationElement elem=extensions[i].getConfigurationElements()[j];
							
							if (LOG.isLoggable(Level.FINE)) {
								LOG.fine("Generator extension: "+elem.getAttribute("class"));
							}
							
							try {
								Object am=elem.createExecutableExtension("class");	
								
								if (am instanceof Generator) {
									GenerateDialog.addGenerator((Generator)am);
								} else {
									LOG.severe("Failed to load generator: "+am);
								}
							} catch(Exception e) {
								LOG.log(Level.SEVERE, "Failed to load generator", e);
							}
						}
					}
				}
			}
		} catch(Throwable t) {
			// Ignore classes not found, so can be used outside Eclipse
		}
		
		try {
			// Initialize list of generators
			IExtensionRegistry registry = Platform.getExtensionRegistry();
			IExtensionPoint point = registry.getExtensionPoint("org.scribble.protocol.parser.ProtocolParser");
	
			if (point != null) {
				IExtension[] extensions = point.getExtensions();
				
				for (int i = 0; i < extensions.length; i++) {
					for (int j=0; j < extensions[i].getConfigurationElements().length; j++) {
						
						if (extensions[i].getConfigurationElements()[j].getName().equals("parser")) {
							IConfigurationElement elem=extensions[i].getConfigurationElements()[j];
							
							if (LOG.isLoggable(Level.FINE)) {
								LOG.fine("Protocol parser extension: "+elem.getAttribute("class"));
							}
							
							try {
								Object am=elem.createExecutableExtension("class");	
								
								if (am instanceof ProtocolParser) {
									ProtocolServices.getParserManager().getParsers().add((ProtocolParser)am);

									String bundleName=elem.getAttribute("bundle");
									
									Bundle bundle=Platform.getBundle(bundleName);
									
									if (bundle != null) {
										BundleRegistry.register(bundle);
									}
								} else {
									LOG.severe("Failed to load protocol parser: "+am);
								}
							} catch(Exception e) {
								LOG.log(Level.SEVERE, "Failed to load protocol parser", e);
							}
						}
					}
				}
			}
		} catch(Throwable t) {
			// Ignore classes not found, so can be used outside Eclipse
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}

	/**
	 * This method logs an error against the plugin.
	 * 
	 * @param mesg The error message
	 * @param t The optional exception
	 */
	public static void logError(String mesg, Throwable t) {
		
		if (getDefault() != null) {
			Status status=new Status(IStatus.ERROR,
					PLUGIN_ID, 0, mesg, t);
			
			getDefault().getLog().log(status);
		}
		
		LOG.log(Level.SEVERE, "LOG ERROR: "+mesg+
				(t == null ? "" : ": "+t), t);
	}
}