diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta2-RC3/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta2-RC3/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC3/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java b/sca-java-2.x/tags/2.0-Beta2-RC3/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java deleted file mode 100644 index 99792d0215..0000000000 --- a/sca-java-2.x/tags/2.0-Beta2-RC3/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -package org.apache.tuscany.sca.core; - -import static org.apache.tuscany.sca.extensibility.ServiceHelper.newInstance; - -import java.io.IOException; -import java.util.ArrayList; -import java.util.Collection; -import java.util.List; -import java.util.Map; -import java.util.logging.Level; -import java.util.logging.Logger; - -import org.apache.tuscany.sca.extensibility.ServiceDeclaration; - -/** - * Default implementation of an extension point to hold Tuscany module activators. - * - * @version $Rev$ $Date$ - */ -public class DefaultModuleActivatorExtensionPoint implements ModuleActivatorExtensionPoint { - private final static Logger logger = Logger.getLogger(DefaultModuleActivatorExtensionPoint.class.getName()); - private List<ModuleActivator> activators = new ArrayList<ModuleActivator>(); - private boolean loadedActivators; - private boolean started; - private ExtensionPointRegistry registry; - - /** - * Constructs a new extension point. - */ - public DefaultModuleActivatorExtensionPoint(ExtensionPointRegistry registry) { - this.registry = registry; - } - - public void addModuleActivator(ModuleActivator activator) { - activators.add(activator); - } - - public List<ModuleActivator> getModuleActivators() { - loadModuleActivators(); - return activators; - } - - public void removeModuleActivator(ModuleActivator activator) { - if (activators.remove(activator)) { - activator.stop(); - } - } - - /** - * Dynamically load module activators declared under META-INF/services - */ - private synchronized void loadModuleActivators() { - if (loadedActivators) - return; - - // Get the activator service declarations - Collection<ServiceDeclaration> activatorDeclarations; - try { - // Load the module activators by ranking - activatorDeclarations = registry.getServiceDiscovery().getServiceDeclarations(ModuleActivator.class.getName(), true); - } catch (IOException e) { - throw new IllegalStateException(e); - } - - // Load and instantiate module activators - for (ServiceDeclaration activatorDeclaration : activatorDeclarations) { - if (logger.isLoggable(Level.FINE)) { - logger.fine("Loading " + activatorDeclaration.getClassName()); - } - ModuleActivator activator = null; - try { - Class<ModuleActivator> activatorClass = (Class<ModuleActivator>)activatorDeclaration.loadClass(); - try { - activator = newInstance(activatorClass, ExtensionPointRegistry.class, registry); - } catch (NoSuchMethodException e) { - try { - activator = - newInstance(activatorClass, - new Class<?>[] {ExtensionPointRegistry.class, Map.class}, - registry, - activatorDeclaration.getAttributes()); - - } catch (NoSuchMethodException e1) { - activator = newInstance(activatorClass); - - } - } - } catch (Throwable e) { - String optional = activatorDeclaration.getAttributes().get("optional"); - if ("true".equalsIgnoreCase(optional)) { - // If the optional flag is true, just log the error - logger.log(Level.SEVERE, e.getMessage(), e); - continue; - } else { - throw new IllegalArgumentException(e); - } - } - addModuleActivator(activator); - } - - loadedActivators = true; - } - - public void start() { - if (started) { - return; - } - getModuleActivators(); - for (ModuleActivator activator : activators) { - try { - activator.start(); - } catch (Throwable e) { - // Ignore the failing module for now - logger.log(Level.SEVERE, e.getMessage(), e); - } - } - started = true; - } - - public void stop() { - if (!started) { - return; - } - for (int i = activators.size() - 1; i >= 0; i--) { - try { - activators.get(i).stop(); - } catch (Throwable e) { - // Ignore the failing module for now - logger.log(Level.SEVERE, e.getMessage(), e); - } - } - started = false; - } - -} |