| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.help.internal.appserver; |
| import org.eclipse.core.runtime.*; |
| import org.osgi.framework.*; |
| /** |
| */ |
| public class AppserverPlugin extends Plugin { |
| public final static String PLUGIN_ID = "org.eclipse.help.appserver"; //$NON-NLS-1$ |
| public final static String HOST_KEY = "host"; //$NON-NLS-1$ |
| public final static String PORT_KEY = "port"; //$NON-NLS-1$ |
| private final static String APP_SERVER_EXTENSION_ID = PLUGIN_ID + ".server"; //$NON-NLS-1$ |
| private static final String APP_SERVER_CLASS_ATTRIBUTE = "class"; //$NON-NLS-1$ |
| private static final String APP_SERVER_DEFAULT_ATTRIBUTE = "default"; //$NON-NLS-1$ |
| // singleton object |
| private static AppserverPlugin plugin; |
| private static BundleContext bundleContext; |
| private IWebappServer appServer; |
| private String contributingServerPlugin; |
| private boolean initialized = false; |
| private String hostAddress; |
| private int port; |
| /** |
| */ |
| public static AppserverPlugin getDefault() { |
| return plugin; |
| } |
| /** |
| * Returns the instance of WebappServer. |
| */ |
| public synchronized IWebappServer getAppServer() throws CoreException { |
| if (appServer == null) { |
| createWebappServer(); |
| startWebappServer(); |
| } |
| return appServer; |
| } |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext) |
| */ |
| public void stop(BundleContext context) throws Exception { |
| if (appServer != null) { |
| appServer.stop(); |
| } |
| plugin = null; |
| bundleContext = null; |
| super.stop(context); |
| } |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext) |
| */ |
| public void start(BundleContext context) throws Exception { |
| super.start(context); |
| plugin = this; |
| bundleContext = context; |
| } |
| /** |
| * Returns the plugin ID that contributes the server implementation |
| * |
| * @return String |
| */ |
| public String getContributingServerPlugin() { |
| return contributingServerPlugin; |
| } |
| private void createWebappServer() throws CoreException { |
| initialized = true; |
| // Initializes the app server by getting an instance via |
| // app-server the extension point |
| // get the app server extension from the system plugin registry |
| IExtensionPoint point = Platform.getExtensionRegistry() |
| .getExtensionPoint(APP_SERVER_EXTENSION_ID); |
| if (point != null) { |
| IExtension[] extensions = point.getExtensions(); |
| if (extensions.length != 0) { |
| // We need to pick up the non-default configuration |
| IConfigurationElement[] elements = extensions[0] |
| .getConfigurationElements(); |
| if (elements.length == 0) |
| return; |
| IConfigurationElement serverElement = null; |
| for (int i = 0; i < elements.length; i++) { |
| String defaultValue = elements[i] |
| .getAttribute(APP_SERVER_DEFAULT_ATTRIBUTE); |
| if (defaultValue == null || defaultValue.equals("false")) { //$NON-NLS-1$ |
| serverElement = elements[i]; |
| break; |
| } |
| } |
| // if all the servers are default, then pick the first one |
| if (serverElement == null) |
| serverElement = elements[0]; |
| // Instantiate the app server |
| try { |
| appServer = (IWebappServer) serverElement |
| .createExecutableExtension(APP_SERVER_CLASS_ATTRIBUTE); |
| contributingServerPlugin = serverElement |
| .getDeclaringExtension() |
| .getNamespace(); |
| } catch (CoreException e) { |
| getLog().log(e.getStatus()); |
| throw e; |
| } |
| } |
| } |
| } |
| private void startWebappServer() throws CoreException { |
| // Initialize host and port from preferences |
| hostAddress = getPluginPreferences().getString(HOST_KEY); |
| if ("".equals(hostAddress)) { //$NON-NLS-1$ |
| hostAddress = null; |
| } |
| port = getPluginPreferences().getInt(PORT_KEY); |
| // apply host and port overrides passed as command line arguments |
| try { |
| String hostCommandLineOverride = System.getProperty("server_host"); //$NON-NLS-1$ |
| if (hostCommandLineOverride != null |
| && hostCommandLineOverride.trim().length() > 0) { |
| hostAddress = hostCommandLineOverride; |
| } |
| } catch (Exception e) { |
| } |
| try { |
| String portCommandLineOverride = System.getProperty("server_port"); //$NON-NLS-1$ |
| if (portCommandLineOverride != null |
| && portCommandLineOverride.trim().length() > 0) { |
| port = Integer.parseInt(portCommandLineOverride); |
| } |
| } catch (Exception e) { |
| } |
| if (appServer == null) |
| throw new CoreException(new Status(IStatus.ERROR, PLUGIN_ID, |
| IStatus.OK, |
| AppserverResources.getString("Appserver.start"), null)); //$NON-NLS-1$ |
| appServer.start(port, hostAddress); |
| } |
| } |