| /******************************************************************************* |
| * Copyright (c) 2008-2010 Sonatype, Inc. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Sonatype, Inc. - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.m2e.scm.internal; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.eclipse.core.runtime.CoreException; |
| 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.Platform; |
| |
| import org.eclipse.m2e.scm.ScmUrl; |
| import org.eclipse.m2e.scm.spi.ScmHandler; |
| import org.eclipse.m2e.scm.spi.ScmHandlerUi; |
| |
| |
| /** |
| * An SCM handler factory |
| * |
| * @author Eugene Kuleshov |
| */ |
| public class ScmHandlerFactory { |
| private static final Logger log = LoggerFactory.getLogger(ScmHandlerFactory.class); |
| |
| public static final String EXTENSION_SCM_HANDLERS = "org.eclipse.m2e.scm.scmHandlers"; //$NON-NLS-1$ |
| |
| public static final String EXTENSION_SCM_HANDLERS_UI = "org.eclipse.m2e.scm.scmHandlersUi"; //$NON-NLS-1$ |
| |
| private static final String ELEMENT_SCM_HANDLER = "handler"; //$NON-NLS-1$ |
| |
| private static final String ELEMENT_SCM_HANDLER_UI = "handlerUi"; //$NON-NLS-1$ |
| |
| private static volatile Map<String, List<ScmHandler>> scms; |
| |
| private static volatile Map<String, ScmHandlerUi> scmUis; |
| |
| public static synchronized void addScmHandlerUi(ScmHandlerUi handlerUi) { |
| getScmUis().put(handlerUi.getType(), handlerUi); |
| } |
| |
| public static synchronized ScmHandlerUi getHandlerUiByType(String type) { |
| return type == null ? null : getScmUis().get(type); |
| } |
| |
| public static synchronized void addScmHandler(ScmHandler handler) { |
| List<ScmHandler> handlers = getScms().get(handler.getType()); |
| if(handlers == null) { |
| handlers = new ArrayList<ScmHandler>(); |
| getScms().put(handler.getType(), handlers); |
| } |
| handlers.add(handler); |
| Collections.sort(handlers); |
| } |
| |
| public static synchronized String[] getTypes() { |
| Map<String, List<ScmHandler>> scms = getScms(); |
| return scms.keySet().toArray(new String[scms.size()]); |
| } |
| |
| public static synchronized ScmHandler getHandler(String url) throws CoreException { |
| String type = ScmUrl.getType(url); |
| return getHandlerByType(type); |
| } |
| |
| public static synchronized ScmHandler getHandlerByType(String type) { |
| List<ScmHandler> handlers = getScms().get(type); |
| if(handlers == null) { |
| return null; |
| } |
| return handlers.get(0); |
| } |
| |
| private static Map<String, List<ScmHandler>> getScms() { |
| if(scms == null) { |
| scms = new TreeMap<String, List<ScmHandler>>(); |
| for(ScmHandler scmHandler : readScmHanderExtensions()) { |
| addScmHandler(scmHandler); |
| } |
| } |
| return scms; |
| } |
| |
| private static Map<String, ScmHandlerUi> getScmUis() { |
| if(scmUis == null) { |
| scmUis = new TreeMap<String, ScmHandlerUi>(); |
| List<ScmHandlerUi> scmHandlerUis = readScmHandlerUiExtensions(); |
| for(ScmHandlerUi scmHandlerUi : scmHandlerUis) { |
| addScmHandlerUi(scmHandlerUi); |
| } |
| } |
| return scmUis; |
| } |
| |
| private static List<ScmHandler> readScmHanderExtensions() { |
| List<ScmHandler> scmHandlers = new ArrayList<ScmHandler>(); |
| IExtensionRegistry registry = Platform.getExtensionRegistry(); |
| IExtensionPoint scmHandlersExtensionPoint = registry.getExtensionPoint(EXTENSION_SCM_HANDLERS); |
| if(scmHandlersExtensionPoint != null) { |
| IExtension[] scmHandlersExtensions = scmHandlersExtensionPoint.getExtensions(); |
| for(IExtension extension : scmHandlersExtensions) { |
| IConfigurationElement[] elements = extension.getConfigurationElements(); |
| for(IConfigurationElement element : elements) { |
| if(element.getName().equals(ELEMENT_SCM_HANDLER)) { |
| try { |
| scmHandlers.add((ScmHandler) element.createExecutableExtension(ScmHandler.ATTR_CLASS)); |
| } catch(CoreException ex) { |
| log.error(ex.getMessage(), ex); |
| } |
| } |
| } |
| } |
| } |
| return scmHandlers; |
| } |
| |
| private static List<ScmHandlerUi> readScmHandlerUiExtensions() { |
| ArrayList<ScmHandlerUi> scmHandlerUis = new ArrayList<ScmHandlerUi>(); |
| IExtensionRegistry registry = Platform.getExtensionRegistry(); |
| IExtensionPoint scmHandlersUiExtensionPoint = registry.getExtensionPoint(EXTENSION_SCM_HANDLERS_UI); |
| if(scmHandlersUiExtensionPoint != null) { |
| IExtension[] scmHandlersUiExtensions = scmHandlersUiExtensionPoint.getExtensions(); |
| for(IExtension extension : scmHandlersUiExtensions) { |
| IConfigurationElement[] elements = extension.getConfigurationElements(); |
| for(IConfigurationElement element : elements) { |
| if(element.getName().equals(ELEMENT_SCM_HANDLER_UI)) { |
| try { |
| scmHandlerUis.add((ScmHandlerUi) element.createExecutableExtension(ScmHandlerUi.ATTR_CLASS)); |
| } catch(CoreException ex) { |
| log.error(ex.getMessage(), ex); |
| } |
| } |
| } |
| } |
| } |
| return scmHandlerUis; |
| } |
| |
| } |