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Diffstat (limited to 'branches/sca-java-1.2/modules/node2-impl/src/main/java/org/apache/tuscany/sca/node/impl/NodeImpl.java')
| -rw-r--r-- | branches/sca-java-1.2/modules/node2-impl/src/main/java/org/apache/tuscany/sca/node/impl/NodeImpl.java | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/branches/sca-java-1.2/modules/node2-impl/src/main/java/org/apache/tuscany/sca/node/impl/NodeImpl.java b/branches/sca-java-1.2/modules/node2-impl/src/main/java/org/apache/tuscany/sca/node/impl/NodeImpl.java deleted file mode 100644 index 0bb9e18a54..0000000000 --- a/branches/sca-java-1.2/modules/node2-impl/src/main/java/org/apache/tuscany/sca/node/impl/NodeImpl.java +++ /dev/null @@ -1,397 +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.node.impl; - -import java.io.InputStream; -import java.net.URL; -import java.net.URLClassLoader; -import java.util.ArrayList; -import java.util.HashMap; -import java.util.List; -import java.util.Map; -import java.util.logging.Level; -import java.util.logging.Logger; - -import javax.xml.namespace.QName; -import javax.xml.stream.XMLInputFactory; -import javax.xml.stream.XMLStreamReader; - -import org.apache.tuscany.sca.assembly.AssemblyFactory; -import org.apache.tuscany.sca.assembly.Component; -import org.apache.tuscany.sca.assembly.ComponentService; -import org.apache.tuscany.sca.assembly.Composite; -import org.apache.tuscany.sca.assembly.CompositeService; -import org.apache.tuscany.sca.contribution.Contribution; -import org.apache.tuscany.sca.contribution.ContributionFactory; -import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; -import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; -import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint; -import org.apache.tuscany.sca.contribution.service.ContributionService; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.assembly.ActivationException; -import org.apache.tuscany.sca.core.assembly.CompositeActivator; -import org.apache.tuscany.sca.host.embedded.impl.ReallySmallRuntime; -import org.apache.tuscany.sca.implementation.node.ConfiguredNodeImplementation; -import org.apache.tuscany.sca.implementation.node.NodeImplementationFactory; -import org.apache.tuscany.sca.node.SCAClient; -import org.apache.tuscany.sca.node.SCANode2; -import org.apache.tuscany.sca.node.SCANode2Factory.SCAContribution; -import org.apache.tuscany.sca.runtime.RuntimeComponent; -import org.apache.tuscany.sca.runtime.RuntimeComponentContext; -import org.osoa.sca.CallableReference; -import org.osoa.sca.ServiceReference; -import org.osoa.sca.ServiceRuntimeException; - -/** - * A local representation of the SCADomain running on a single node - * - * @version $Rev$ $Date$ - */ -public class NodeImpl implements SCANode2, SCAClient { - - private final static Logger logger = Logger.getLogger(NodeImpl.class.getName()); - - // The node configuration name, used for logging - private String configurationName; - - // The Tuscany runtime that does the hard work - private ReallySmallRuntime runtime; - private CompositeActivator compositeActivator; - private XMLInputFactory inputFactory; - private ModelFactoryExtensionPoint modelFactories; - private StAXArtifactProcessorExtensionPoint artifactProcessors; - - // The composite loaded into this node - private Composite composite; - - /** - * Constructs a new SCA node. - * - * @param configurationURI the URI of the node configuration information. - */ - NodeImpl(String configurationURI) { - configurationName = configurationURI; - logger.log(Level.INFO, "Creating node: " + configurationName); - - try { - // Initialize the runtime - initRuntime(); - - // Read the node configuration feed - StAXArtifactProcessor<ConfiguredNodeImplementation> configurationProcessor = artifactProcessors.getProcessor(ConfiguredNodeImplementation.class); - URL configurationURL = new URL(configurationURI); - InputStream is = configurationURL.openStream(); - XMLStreamReader reader = inputFactory.createXMLStreamReader(is); - reader.nextTag(); - ConfiguredNodeImplementation configuration = configurationProcessor.read(reader); - is.close(); - - // Resolve contribution URLs - for (Contribution contribution: configuration.getContributions()) { - URL contributionURL = new URL(configurationURL, contribution.getLocation()); - contribution.setLocation(contributionURL.toString()); - } - - // Resolve composite URL - URL compositeURL = new URL(configurationURL, configuration.getComposite().getURI()); - configuration.getComposite().setURI(compositeURL.toString()); - - // Configure the node - configureNode(configuration); - - } catch (Exception e) { - throw new ServiceRuntimeException(e); - } - } - - /** - * Constructs a new SCA node. - * - * @param compositeURI - * @param contributions - */ - NodeImpl(String compositeURI, SCAContribution[] contributions) { - configurationName = compositeURI; - logger.log(Level.INFO, "Creating node: " + configurationName); - - try { - // Initialize the runtime - initRuntime(); - - // Create a node configuration - NodeImplementationFactory nodeImplementationFactory = modelFactories.getFactory(NodeImplementationFactory.class); - ConfiguredNodeImplementation configuration = nodeImplementationFactory.createConfiguredNodeImplementation(); - - // Create composite model - AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); - Composite composite = assemblyFactory.createComposite(); - composite.setURI(compositeURI); - composite.setUnresolved(true); - configuration.setComposite(composite); - - // Create contribution models - ContributionFactory contributionFactory = modelFactories.getFactory(ContributionFactory.class); - for (SCAContribution c: contributions) { - Contribution contribution = contributionFactory.createContribution(); - contribution.setURI(c.getURI()); - contribution.setLocation(c.getLocation()); - contribution.setUnresolved(true); - configuration.getContributions().add(contribution); - } - - // Configure the node - configureNode(configuration); - - } catch (Exception e) { - throw new ServiceRuntimeException(e); - } - } - - /** - * Initialize the Tuscany runtime. - * - * @throws Exception - */ - private void initRuntime() throws Exception { - - // Create a node runtime - runtime = new ReallySmallRuntime(Thread.currentThread().getContextClassLoader()); - runtime.start(); - - // Get the various factories we need - ExtensionPointRegistry registry = runtime.getExtensionPointRegistry(); - modelFactories = registry.getExtensionPoint(ModelFactoryExtensionPoint.class); - inputFactory = modelFactories.getFactory(XMLInputFactory.class); - - // Create the required artifact processors - artifactProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); - - // Save the composite activator - compositeActivator = runtime.getCompositeActivator(); - } - - private void configureNode(ConfiguredNodeImplementation configuration) throws Exception { - - // Find if any contribution JARs already available locally on the classpath - Map<String, URL> localContributions = localContributions(); - - // Load the specified contributions - ContributionService contributionService = runtime.getContributionService(); - List<Contribution> contributions = new ArrayList<Contribution>(); - for (Contribution contribution: configuration.getContributions()) { - URL contributionURL = new URL(contribution.getLocation()); - - // Extract contribution file name - String file =contributionURL.getPath(); - int i = file.lastIndexOf('/'); - if (i != -1 && i < file.length() -1 ) { - file = file.substring(i +1); - - // If we find the local contribution file on the classpath, use it in - // place of the original contribution URL - URL localContributionURL = localContributions.get(file); - if (localContributionURL != null) { - contributionURL = localContributionURL; - } - } - - // Load the contribution - logger.log(Level.INFO, "Loading contribution: " + contributionURL); - contributions.add(contributionService.contribute(contribution.getURI(), contributionURL, false)); - } - - // Load the specified composite - StAXArtifactProcessor<Composite> compositeProcessor = artifactProcessors.getProcessor(Composite.class); - URL compositeURL = new URL(configuration.getComposite().getURI()); - logger.log(Level.INFO, "Loading composite: " + compositeURL); - InputStream is = compositeURL.openStream(); - XMLStreamReader reader = inputFactory.createXMLStreamReader(is); - composite = compositeProcessor.read(reader); - - // Resolve it within the context of the first contribution - Contribution mainContribution = contributions.get(contributions.size()-1); - compositeProcessor.resolve(composite, mainContribution.getModelResolver()); - - // Create a top level composite to host our composite - // This is temporary to make the activator happy - AssemblyFactory assemblyFactory = runtime.getAssemblyFactory(); - Composite tempComposite = assemblyFactory.createComposite(); - tempComposite.setName(new QName("http://tempuri.org", "temp")); - tempComposite.setURI("http://tempuri.org"); - - // Include the node composite in the top-level composite - tempComposite.getIncludes().add(composite); - - // Build the composite - runtime.buildComposite(composite); - } - - public void start() { - logger.log(Level.INFO, "Starting node: " + configurationName); - - try { - - // Activate the composite - compositeActivator.activate(composite); - - // Start the composite - compositeActivator.start(composite); - - } catch (ActivationException e) { - throw new ServiceRuntimeException(e); - } - } - - public void stop() { - logger.log(Level.INFO, "Stopping node: " + configurationName); - - try { - - // Stop the composite - compositeActivator.stop(composite); - - // Deactivate the composite - compositeActivator.deactivate(composite); - - } catch (ActivationException e) { - throw new ServiceRuntimeException(e); - } - } - - public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException { - return (R)runtime.getProxyFactory().cast(target); - } - - public <B> B getService(Class<B> businessInterface, String serviceName) { - - ServiceReference<B> serviceReference = getServiceReference(businessInterface, serviceName); - if (serviceReference == null) { - throw new ServiceRuntimeException("Service not found: " + serviceName); - } - return serviceReference.getService(); - } - - public <B> ServiceReference<B> getServiceReference(Class<B> businessInterface, String name) { - - // Extract the component name - String componentName; - String serviceName; - int i = name.indexOf('/'); - if (i != -1) { - componentName = name.substring(0, i); - serviceName = name.substring(i + 1); - - } else { - componentName = name; - serviceName = null; - } - - // Lookup the component - Component component = null; - - for (Component compositeComponent: composite.getComponents()) { - if (compositeComponent.getName().equals(componentName)) { - component = compositeComponent; - } - } - - if (component == null) { - throw new ServiceRuntimeException("The service " + name + " has not been contributed to the domain"); - } - RuntimeComponentContext componentContext = null; - - // If the component is a composite, then we need to find the - // non-composite component that provides the requested service - if (component.getImplementation() instanceof Composite) { - for (ComponentService componentService : component.getServices()) { - if (serviceName == null || serviceName.equals(componentService.getName())) { - CompositeService compositeService = (CompositeService)componentService.getService(); - if (compositeService != null) { - if (serviceName != null) { - serviceName = "$promoted$." + serviceName; - } - componentContext = - ((RuntimeComponent)compositeService.getPromotedComponent()).getComponentContext(); - return componentContext.createSelfReference(businessInterface, compositeService.getPromotedService()); - } - break; - } - } - // No matching service found - throw new ServiceRuntimeException("Composite service not found: " + name); - } else { - componentContext = ((RuntimeComponent)component).getComponentContext(); - if (serviceName != null) { - return componentContext.createSelfReference(businessInterface, serviceName); - } else { - return componentContext.createSelfReference(businessInterface); - } - } - } - - /** - * Returns the extension point registry used by this node. - * - * @return - */ - public ExtensionPointRegistry getExtensionPointRegistry() { - return runtime.getExtensionPointRegistry(); - } - - /** - * Returns contribution JARs available on the classpath. - * - * @return - */ - private static Map<String, URL> localContributions () { - Map<String, URL> localContributions = new HashMap<String, URL>(); - collectJARs(localContributions, Thread.currentThread().getContextClassLoader()); - return localContributions; - } - - /** - * Collect JARs on the classpath of a URLClassLoader - * @param urls - * @param cl - */ - private static void collectJARs(Map<String, URL> urls, ClassLoader cl) { - if (cl == null) { - return; - } - - // Collect JARs from the URLClassLoader's classpath - if (cl instanceof URLClassLoader) { - URL[] jarURLs = ((URLClassLoader)cl).getURLs(); - if (jarURLs != null) { - for (URL jarURL: jarURLs) { - String file =jarURL.getPath(); - int i = file.lastIndexOf('/'); - if (i != -1 && i < file.length() -1 ) { - file = file.substring(i +1); - urls.put(file, jarURL); - } - } - } - } - - // Collect JARs from the parent ClassLoader - collectJARs(urls, cl.getParent()); - } -} |