diff options
Diffstat (limited to 'tags/java/sca/1.3-RC1/modules/extensibility/src')
11 files changed, 0 insertions, 1165 deletions
diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java deleted file mode 100644 index 48f240559c..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java +++ /dev/null @@ -1,184 +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 java.io.IOException; -import java.lang.reflect.Constructor; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Modifier; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Map; -import java.util.Set; - -import org.apache.tuscany.sca.extensibility.ServiceDiscovery; - -/** - * Default implementation of a registry to hold all the Tuscany core extension - * points. As the point of contact for all extension artifacts this registry - * allows loaded extensions to find all other parts of the system and register - * themselves appropriately. - * - * @version $Rev$ $Date$ - */ -public class DefaultExtensionPointRegistry implements ExtensionPointRegistry { - private Map<Class<?>, Object> extensionPoints = new HashMap<Class<?>, Object>(); - - /** - * Constructs a new registry. - */ - public DefaultExtensionPointRegistry() { - } - - /** - * Add an extension point to the registry. This default implementation - * stores extensions against the interfaces that they implement. - * - * @param extensionPoint The instance of the extension point - * - * @throws IllegalArgumentException if extensionPoint is null - */ - public void addExtensionPoint(Object extensionPoint) { - if (extensionPoint == null) { - throw new IllegalArgumentException("Cannot register null as an ExtensionPoint"); - } - - Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass()); - for (Class<?> i : interfaces) { - extensionPoints.put(i, extensionPoint); - } - } - - private Constructor<?> getConstructor(Constructor<?>[] constructors, Class<?>[] paramTypes) { - for (Constructor<?> c : constructors) { - Class<?>[] types = c.getParameterTypes(); - if (c.getParameterTypes().length == paramTypes.length) { - boolean found = true; - for (int i = 0; i < types.length; i++) { - if (types[i] != paramTypes[i]) { - found = false; - break; - } - } - if (found) { - return c; - } - } - } - return null; - } - - /** - * Get the extension point by the interface that it implements - * - * @param extensionPointType The lookup key (extension point interface) - * @return The instance of the extension point - * - * @throws IllegalArgumentException if extensionPointType is null - */ - public <T> T getExtensionPoint(Class<T> extensionPointType) { - if (extensionPointType == null) { - throw new IllegalArgumentException("Cannot lookup ExtensionPoint of type null"); - } - - Object extensionPoint = extensionPoints.get(extensionPointType); - if (extensionPoint == null) { - - // Dynamically load an extension point class declared under META-INF/services - try { - Class<?> extensionPointClass = - ServiceDiscovery.getInstance().loadFirstServiceClass(extensionPointType); - if (extensionPointClass != null) { - // Construct the extension point - Constructor<?>[] constructors = extensionPointClass.getConstructors(); - Constructor<?> constructor = getConstructor(constructors, new Class<?>[] {ExtensionPointRegistry.class}); - if (constructor != null) { - extensionPoint = constructor.newInstance(this); - } else { - constructor = getConstructor(constructors, new Class<?>[] {}); - if (constructor != null) { - extensionPoint = constructor.newInstance(); - } else { - throw new IllegalArgumentException( - "No valid constructor is found for " + extensionPointClass); - } - } - - // Cache the loaded extension point - addExtensionPoint(extensionPoint); - } - } catch (InvocationTargetException e) { - throw new IllegalArgumentException(e); - } catch (IOException e) { - throw new IllegalArgumentException(e); - } catch (ClassNotFoundException e) { - throw new IllegalArgumentException(e); - } catch (InstantiationException e) { - throw new IllegalArgumentException(e); - } catch (IllegalAccessException e) { - throw new IllegalArgumentException(e); - } - } - return extensionPointType.cast(extensionPoint); - } - - /** - * Remove an extension point based on the interface that it implements - * - * @param extensionPoint The extension point to remove - * - * @throws IllegalArgumentException if extensionPoint is null - */ - public void removeExtensionPoint(Object extensionPoint) { - if (extensionPoint == null) { - throw new IllegalArgumentException("Cannot remove null as an ExtensionPoint"); - } - - Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass()); - for (Class<?> i : interfaces) { - extensionPoints.remove(i); - } - } - - /** - * Returns the set of interfaces implemented by the given class and its - * ancestors or a blank set if none - */ - private static Set<Class<?>> getAllInterfaces(Class<?> clazz) { - Set<Class<?>> implemented = new HashSet<Class<?>>(); - getAllInterfaces(clazz, implemented); - return implemented; - } - - private static void getAllInterfaces(Class<?> clazz, Set<Class<?>> implemented) { - Class<?>[] interfaces = clazz.getInterfaces(); - for (Class<?> interfaze : interfaces) { - if (Modifier.isPublic(interfaze.getModifiers())) { - implemented.add(interfaze); - } - } - Class<?> superClass = clazz.getSuperclass(); - // Object has no superclass so check for null - if (superClass != null && !superClass.equals(Object.class)) { - getAllInterfaces(superClass, implemented); - } - } - -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java deleted file mode 100644 index 8ca030c0dd..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultModuleActivatorExtensionPoint.java +++ /dev/null @@ -1,92 +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 java.io.IOException; -import java.util.ArrayList; -import java.util.List; -import java.util.Set; - -import org.apache.tuscany.sca.extensibility.ServiceDeclaration; -import org.apache.tuscany.sca.extensibility.ServiceDiscovery; - -/** - * Default implementation of an extension point to hold Tuscany module activators. - * - * @version $Rev$ $Date$ - */ -public class DefaultModuleActivatorExtensionPoint implements ModuleActivatorExtensionPoint { - private List<ModuleActivator> activators = new ArrayList<ModuleActivator>(); - private boolean loadedActivators; - - /** - * Constructs a new extension point. - */ - public DefaultModuleActivatorExtensionPoint() { - } - - public void addModuleActivator(ModuleActivator activator) { - activators.add(activator); - } - - public List<ModuleActivator> getModuleActivators() { - loadModuleActivators(); - return activators; - } - - public void removeModuleActivator(Object activator) { - activators.remove(activator); - } - - /** - * Dynamically load module activators declared under META-INF/services - */ - private void loadModuleActivators() { - if (loadedActivators) - return; - - // Get the activator service declarations - Set<ServiceDeclaration> activatorDeclarations; - try { - activatorDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(ModuleActivator.class); - } catch (IOException e) { - throw new IllegalStateException(e); - } - - // Load and instantiate module activators - for (ServiceDeclaration activatorDeclaration: activatorDeclarations) { - ModuleActivator activator; - try { - Class<ModuleActivator> activatorClass = (Class<ModuleActivator>)activatorDeclaration.loadClass(); - activator = activatorClass.newInstance(); - } catch (ClassNotFoundException e) { - throw new IllegalArgumentException(e); - } catch (InstantiationException e) { - throw new IllegalArgumentException(e); - } catch (IllegalAccessException e) { - throw new IllegalArgumentException(e); - } - addModuleActivator(activator); - } - - loadedActivators = true; - } - -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultUtilityExtensionPoint.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultUtilityExtensionPoint.java deleted file mode 100644 index 6f7c83c8d9..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultUtilityExtensionPoint.java +++ /dev/null @@ -1,184 +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 java.io.IOException; -import java.lang.reflect.Constructor; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Modifier; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Map; -import java.util.Set; - -import org.apache.tuscany.sca.extensibility.ServiceDiscovery; - -/** - * Default implementation of an extension point to hold Tuscany utility utilities. - * - * @version $Rev$ $Date$ - */ -public class DefaultUtilityExtensionPoint implements UtilityExtensionPoint { - private Map<Class<?>, Object> utilities = new HashMap<Class<?>, Object>(); - - private ExtensionPointRegistry extensionPoints; - - /** - * Constructs a new extension point. - */ - public DefaultUtilityExtensionPoint(ExtensionPointRegistry extensionPoints) { - this.extensionPoints = extensionPoints; - } - - /** - * Add a utility to the extension point. This default implementation - * stores utilities against the interfaces that they implement. - * - * @param utility The instance of the utility - * - * @throws IllegalArgumentException if utility is null - */ - public void addUtility(Object utility) { - if (utility == null) { - throw new IllegalArgumentException("Cannot register null as a Service"); - } - - Set<Class<?>> interfaces = getAllInterfaces(utility.getClass()); - for (Class<?> i : interfaces) { - utilities.put(i, utility); - } - } - - private Constructor<?> getConstructor(Constructor<?>[] constructors, Class<?>[] paramTypes) { - for (Constructor<?> c : constructors) { - Class<?>[] types = c.getParameterTypes(); - if (c.getParameterTypes().length == paramTypes.length) { - boolean found = true; - for (int i = 0; i < types.length; i++) { - if (types[i] != paramTypes[i]) { - found = false; - break; - } - } - if (found) { - return c; - } - } - } - return null; - } - - /** - * Get the utility by the interface that it implements - * - * @param utilityType The lookup key (utility interface) - * @return The instance of the utility - * - * @throws IllegalArgumentException if utilityType is null - */ - public <T> T getUtility(Class<T> utilityType) { - if (utilityType == null) { - throw new IllegalArgumentException("Cannot lookup Service of type null"); - } - - Object utility = utilities.get(utilityType); - if (utility == null) { - - // Dynamically load a utility class declared under META-INF/utilities - try { - Class<?> utilityClass = - ServiceDiscovery.getInstance().loadFirstServiceClass(utilityType); - if (utilityClass != null) { - // Construct the utility - Constructor<?>[] constructors = utilityClass.getConstructors(); - Constructor<?> constructor = getConstructor(constructors, new Class<?>[] {ExtensionPointRegistry.class}); - if (constructor != null) { - utility = constructor.newInstance(extensionPoints); - } else { - constructor = getConstructor(constructors, new Class<?>[] {}); - if (constructor != null) { - utility = constructor.newInstance(); - } else { - throw new IllegalArgumentException( - "No valid constructor is found for " + utilityClass); - } - } - - // Cache the loaded utility - addUtility(utility); - } - } catch (InvocationTargetException e) { - throw new IllegalArgumentException(e); - } catch (IOException e) { - throw new IllegalArgumentException(e); - } catch (ClassNotFoundException e) { - throw new IllegalArgumentException(e); - } catch (InstantiationException e) { - throw new IllegalArgumentException(e); - } catch (IllegalAccessException e) { - throw new IllegalArgumentException(e); - } - } - return utilityType.cast(utility); - } - - /** - * Remove a utility based on the interface that it implements - * - * @param utility The utility to remove - * - * @throws IllegalArgumentException if utility is null - */ - public void removeUtility(Object utility) { - if (utility == null) { - throw new IllegalArgumentException("Cannot remove null as a Service"); - } - - Set<Class<?>> interfaces = getAllInterfaces(utility.getClass()); - for (Class<?> i : interfaces) { - utilities.remove(i); - } - } - - /** - * Returns the set of interfaces implemented by the given class and its - * ancestors or a blank set if none - */ - private static Set<Class<?>> getAllInterfaces(Class<?> clazz) { - Set<Class<?>> implemented = new HashSet<Class<?>>(); - getAllInterfaces(clazz, implemented); - return implemented; - } - - private static void getAllInterfaces(Class<?> clazz, Set<Class<?>> implemented) { - Class<?>[] interfaces = clazz.getInterfaces(); - for (Class<?> interfaze : interfaces) { - if (Modifier.isPublic(interfaze.getModifiers())) { - implemented.add(interfaze); - } - } - Class<?> superClass = clazz.getSuperclass(); - // Object has no superclass so check for null - if (superClass != null && !superClass.equals(Object.class)) { - getAllInterfaces(superClass, implemented); - } - } - -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java deleted file mode 100644 index f2f67b2d52..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java +++ /dev/null @@ -1,56 +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; - - -/** - * The registry for the Tuscany core extension points. As the point of contact - * for all extension artifacts this registry allows loaded extensions to find - * all other parts of the system and register themselves appropriately. - * - * @version $Rev$ $Date$ - */ -public interface ExtensionPointRegistry { - - /** - * Add an extension point to the registry - * @param extensionPoint The instance of the extension point - * - * @throws IllegalArgumentException if extensionPoint is null - */ - void addExtensionPoint(Object extensionPoint); - - /** - * Get the extension point by the interface - * @param extensionPointType The lookup key (extension point interface) - * @return The instance of the extension point - * - * @throws IllegalArgumentException if extensionPointType is null - */ - <T> T getExtensionPoint(Class<T> extensionPointType); - - /** - * Remove an extension point - * @param extensionPoint The extension point to remove - * - * @throws IllegalArgumentException if extensionPoint is null - */ - void removeExtensionPoint(Object extensionPoint); -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java deleted file mode 100644 index dbfd0dcd90..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java +++ /dev/null @@ -1,60 +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; - - -/** - * ModuleActivator represents a module that plugs into the Tuscany system. Each - * module should provide an implementation of this interface and register the - * ModuleActivator implementation class by defining a file named - * - * "META-INF/services/org.apache.tuscany.core.ModuleActivator" - * - * The content of the file is the class name of the ModuleActivator implementation. - * The implementation class must have a no-arg constructor. The same instance - * will be used to invoke all the methods during different phases of the module - * activation. Note that the start and stop methods defined by this interface - * take a reference to the Tuscany SCA runtime ExtensionPointRegistry. This - * gives the ModuleActivator the opportunity to add extension points to the - * registry as it is requested to start up and remove them when it is requested - * to shut down. - * - * @version $Rev$ $Date$ - */ -public interface ModuleActivator { - - /** - * This method is invoked when the module is started by the Tuscany system. - * It can be used by this module to register extensions against extension - * points. - * - * @param registry The extension point registry - */ - void start(ExtensionPointRegistry registry); - - /** - * This method is invoked when the module is stopped by the Tuscany system. - * It can be used by this module to unregister extensions against the - * extension points. - * - * @param registry The extension point registry - */ - void stop(ExtensionPointRegistry registry); -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivatorExtensionPoint.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivatorExtensionPoint.java deleted file mode 100644 index ec0f12b8ba..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/ModuleActivatorExtensionPoint.java +++ /dev/null @@ -1,53 +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 java.util.List; - - -/** - * The extension point for the Tuscany module activator extensions. - * - * @version $Rev$ $Date$ - */ -public interface ModuleActivatorExtensionPoint { - - /** - * Add a module activator extension to the extension point - * @param activator The instance of the module activator - * - * @throws IllegalArgumentException if activator is null - */ - void addModuleActivator(ModuleActivator activator); - - /** - * Returns the module activator extensions. - * @return The module activator extensions - */ - List<ModuleActivator> getModuleActivators(); - - /** - * Remove a module activator - * @param activator The module activator to remove - * - * @throws IllegalArgumentException if activator is null - */ - void removeModuleActivator(Object activator); -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/UtilityExtensionPoint.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/UtilityExtensionPoint.java deleted file mode 100644 index 6b14b95666..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/UtilityExtensionPoint.java +++ /dev/null @@ -1,54 +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; - - -/** - * The extension point for the Tuscany core utility extensions. - * - * @version $Rev$ $Date$ - */ -public interface UtilityExtensionPoint { - - /** - * Add a utility to the extension point - * @param utility The instance of the utility - * - * @throws IllegalArgumentException if utility is null - */ - void addUtility(Object utility); - - /** - * Get the utility by the interface - * @param utilityType The lookup key (utility interface) - * @return The instance of the utility - * - * @throws IllegalArgumentException if utilityType is null - */ - <T> T getUtility(Class<T> utilityType); - - /** - * Remove a utility - * @param utility The utility to remove - * - * @throws IllegalArgumentException if utility is null - */ - void removeUtility(Object utility); -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java deleted file mode 100644 index 4b25f2adc2..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java +++ /dev/null @@ -1,136 +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.extensibility; - -import java.lang.ref.WeakReference; -import java.net.URL; -import java.util.Map; - -/** - * Service declaration using J2SE Jar service provider spec Classes specified - * inside this declaration are loaded using the ClassLoader used to read the - * configuration file corresponding to this declaration. - * - * @version $Rev$ $Date$ - */ -public class ServiceDeclaration { - - private WeakReference<ClassLoader> classLoader; - - private String className; - - private Map<String, String> attributes; - - /** - * Service declaration constructor - * - * @param className Service implementation class name - * @param classLoader ClassLoader corresponding to this service - * implementation - * @param attributes Optional attributes for this service declaration - */ - public ServiceDeclaration(String className, ClassLoader classLoader, Map<String, String> attributes) { - - this.className = className; - this.classLoader = new WeakReference<ClassLoader>(classLoader); - this.attributes = attributes; - } - - /** - * Load this service implementation class - * - * @return Class - * @throws ClassNotFoundException - */ - @SuppressWarnings("unchecked") - public Class<?> loadClass() throws ClassNotFoundException { - - return Class.forName(className, true, classLoader.get()); - } - - /** - * Load another class using the ClassLoader of this service implementation - * - * @param anotherClassName - * @return Class - * @throws ClassNotFoundException - */ - public Class<?> loadClass(String anotherClassName) throws ClassNotFoundException { - - return Class.forName(anotherClassName, true, classLoader.get()); - } - - /** - * Return the resource corresponding to this service implementation class - * - * @return resource URL - */ - public URL getResource() { - return classLoader.get().getResource(className); - } - - /** - * ClassLoader associated with this service declaration - * - * @return ClassLoader - */ - public ClassLoader getClassLoader() { - return classLoader.get(); - } - - /** - * Service implementation class corresponding to this declaration - * - * @return The Service implementation class corresponding to this declaration - */ - public String getClassName() { - return className; - } - - /** - * Attributes specified for this declaration - * - * @return attributes - */ - public Map<String, String> getAttributes() { - return attributes; - } - - /** - * Equals method used to ensure that each service declaration is stored only - * once in a set of declarations. - */ - @Override - public boolean equals(Object o) { - if (!(o instanceof ServiceDeclaration)) - return false; - ServiceDeclaration s = (ServiceDeclaration)o; - if (!className.equals(s.className)) - return false; - else if (!classLoader.equals(s.classLoader)) - return false; - else if (attributes == null) - return s.attributes == null; - else - return attributes.equals(s.attributes); - - } - -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDiscovery.java b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDiscovery.java deleted file mode 100644 index 45a4494f24..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDiscovery.java +++ /dev/null @@ -1,310 +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.extensibility; - -import java.io.BufferedReader; -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.net.URL; -import java.security.AccessController; -import java.security.PrivilegedActionException; -import java.security.PrivilegedExceptionAction; -import java.util.ArrayList; -import java.util.Collections; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Hashtable; -import java.util.Map; -import java.util.Set; -import java.util.StringTokenizer; -import java.util.logging.Level; -import java.util.logging.Logger; - -/** - * Service discovery for Tuscany based on J2SE Jar service provider spec. - * Services are described using configuration files in META-INF/services. - * Service description specifies a class name followed by optional properties. - * Multi-ClassLoader environments are supported through a ClassLoader - * registration API - * - * @version $Rev$ $Date$ - */ -public class ServiceDiscovery { - private static final Logger logger = Logger.getLogger(ServiceDiscovery.class.getName()); - - private static ServiceDiscovery instance; - - private HashSet<ClassLoader> registeredClassLoaders; - - /** - * Get an instance of Service discovery, one instance is created per - * ClassLoader that this class is loaded from - * - * @return - */ - public static ServiceDiscovery getInstance() { - - if (instance == null) { - instance = new ServiceDiscovery(); - instance.registeredClassLoaders = new HashSet<ClassLoader>(); - instance.registeredClassLoaders.add(ServiceDiscovery.class.getClassLoader()); - } - return instance; - } - - /** - * Register a ClassLoader with this discovery mechanism. Tuscany extension - * ClassLoaders are registered here. - * - * @param classLoader - */ - public synchronized void registerClassLoader(ClassLoader classLoader) { - registeredClassLoaders.add(classLoader); - } - - /** - * Unregister a ClassLoader with this discovery mechanism. - * - * @param classLoader - */ - public synchronized void unregisterClassLoader(ClassLoader classLoader) { - registeredClassLoaders.remove(classLoader); - } - - /** - * Get all service declarations for this name - * - * @param name - * @return set of service declarations - * @throws IOException - */ - public synchronized Set<ServiceDeclaration> getServiceDeclarations(String name) throws IOException { - - Set<ServiceDeclaration> classSet = new HashSet<ServiceDeclaration>(); - - for (ClassLoader classLoader : registeredClassLoaders) { - getServiceClasses(classLoader, name, classSet, true); - } - return classSet; - } - - /** - * Get all service declarations for this interface - * - * @param serviceInterface - * @return set of service declarations - * @throws IOException - */ - public Set<ServiceDeclaration> getServiceDeclarations(Class<?> serviceInterface) throws IOException { - - return getServiceDeclarations(serviceInterface.getName()); - } - - /** - * Load one service implementation class for this interface - * - * @param serviceInterface - * @return service implementation class - * @throws IOException - * @throws ClassNotFoundException - */ - public synchronized Class<?> loadFirstServiceClass(Class<?> serviceInterface) throws IOException, ClassNotFoundException { - - Set<ServiceDeclaration> classSet = new HashSet<ServiceDeclaration>(); - - for (ClassLoader classLoader : registeredClassLoaders) { - getServiceClasses(classLoader, serviceInterface.getName(), classSet, false); - if (classSet.size() > 0) - break; - } - if (classSet.size() > 0) - return classSet.iterator().next().loadClass(); - else - return null; - - } - - /** - * Returns a unique list of resource URLs of name META-INF/services/<name> - * Each URL is associated with the first ClassLoader that it was visible - * from - * - * @param name Name of resource - * @return Table of URLs with associated ClassLoaders - * @throws IOException - */ - public synchronized Hashtable<ClassLoader, Set<URL>> getServiceResources(final String name) throws IOException { - - Hashtable<ClassLoader, Set<URL>> resourceTable = new Hashtable<ClassLoader, Set<URL>>(); - - HashSet<URL> allURLs = new HashSet<URL>(); - for (final ClassLoader classLoader : registeredClassLoaders) { - HashSet<URL> urls = new HashSet<URL>(); - resourceTable.put(classLoader, urls); - boolean debug = logger.isLoggable(Level.FINE); - if (debug) { - logger.fine("Discovering service resources using class loader " + classLoader); - } - // Allow privileged access to read META-INF/services/*. Add FilePermission to added to security policy file. - ArrayList<URL> urlList; - try { - // FIXME J2 Security - promote this to callers of this method - urlList = AccessController.doPrivileged(new PrivilegedExceptionAction<ArrayList<URL>>() { - public ArrayList<URL> run() throws IOException { - return Collections.list(classLoader.getResources("META-INF/services/" + name)); - } - }); - } catch (PrivilegedActionException e) { - throw (IOException)e.getException(); - } - - for (URL url : urlList) { - if (allURLs.contains(url)) - continue; - urls.add(url); - } - allURLs.addAll(urls); - } - return resourceTable; - } - - /** - * Parse a service declaration in the form class;attr=value,attr=value and - * return a map of attributes - * - * @param declaration - * @return a map of attributes - */ - private Map<String, String> parseServiceDeclaration(String declaration) { - Map<String, String> attributes = new HashMap<String, String>(); - int index = declaration.indexOf(';'); - if (index != -1) { - attributes.put("class", declaration.substring(0, index).trim()); - declaration = declaration.substring(index); - } else { - int j = declaration.indexOf('='); - if (j == -1) { - attributes.put("class", declaration.trim()); - return attributes; - } else { - declaration = ";" + declaration; - } - } - StringTokenizer tokens = new StringTokenizer(declaration); - for (; tokens.hasMoreTokens();) { - String key = tokens.nextToken("=").substring(1).trim(); - if (key == null) - break; - String value = tokens.nextToken(",").substring(1).trim(); - if (value == null) - break; - attributes.put(key, value); - } - return attributes; - } - - /** - * Load the service class whose name specified in a configuration file - * - * @param classLoader - * @param name The name of the service class - * @param classSet Populate this set with classes extends/implements the - * service class - * @throws IOException - */ - private void getServiceClasses(final ClassLoader classLoader, - final String name, - Set<ServiceDeclaration> classSet, - boolean findAllClasses) throws IOException { - - boolean debug = logger.isLoggable(Level.FINE); - if (debug) { - logger.fine("Discovering service providers using class loader " + classLoader); - } - // Allow privileged access to read META-INF/services/*. Add FilePermission to added to - // security policy file. - ArrayList<URL> urlList; - try { - urlList = AccessController.doPrivileged(new PrivilegedExceptionAction<ArrayList<URL>>() { - public ArrayList<URL> run() throws IOException { - return Collections.list(classLoader.getResources("META-INF/services/" + name)); - } - }); - } catch (PrivilegedActionException e) { - throw (IOException)e.getException(); - } - - for (final URL url : urlList) { - if (debug) { - logger.fine("Reading service provider file: " + url.toExternalForm()); - } - - // Allow privileged access to open URL stream. Add FilePermission to added to security - // policy file. - InputStream is; - try { - is = AccessController.doPrivileged(new PrivilegedExceptionAction<InputStream>() { - public InputStream run() throws IOException { - return url.openStream(); - } - }); - } catch (PrivilegedActionException e) { - throw (IOException)e.getException(); - } - BufferedReader reader = null; - try { - reader = new BufferedReader(new InputStreamReader(is)); - while (true) { - String line = reader.readLine(); - if (line == null) - break; - line = line.trim(); - if (!line.startsWith("#") && !"".equals(line)) { - String reg = line.trim(); - if (debug) { - logger.fine("Registering service provider: " + reg); - } - - Map<String, String> attributes = parseServiceDeclaration(reg); - String className = attributes.get("class"); - ServiceDeclaration serviceClass = new ServiceDeclaration(className, classLoader, attributes); - classSet.add(serviceClass); - - if (!findAllClasses) - break; - } - } - } finally { - if (reader != null) - reader.close(); - if (is != null) { - try { - is.close(); - } catch (IOException ioe) { - } - } - } - if (!findAllClasses && classSet.size() > 0) - break; - } - } - -} diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivatorExtensionPoint b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivatorExtensionPoint deleted file mode 100644 index 42bad63132..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivatorExtensionPoint +++ /dev/null @@ -1,18 +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.
-
-org.apache.tuscany.sca.core.DefaultModuleActivatorExtensionPoint
diff --git a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.UtilityExtensionPoint b/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.UtilityExtensionPoint deleted file mode 100644 index d769bad283..0000000000 --- a/tags/java/sca/1.3-RC1/modules/extensibility/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.UtilityExtensionPoint +++ /dev/null @@ -1,18 +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.
-
-org.apache.tuscany.sca.core.DefaultUtilityExtensionPoint
|