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/*
* 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.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
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.assembly.Endpoint;
import org.apache.tuscany.sca.assembly.Service;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.core.assembly.ActivationException;
import org.apache.tuscany.sca.core.assembly.CompositeActivator;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.node.Client;
import org.apache.tuscany.sca.node.Node;
import org.apache.tuscany.sca.node.NodeFinder;
import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentContext;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
import org.oasisopen.sca.CallableReference;
import org.oasisopen.sca.ServiceReference;
import org.oasisopen.sca.ServiceRuntimeException;
import org.oasisopen.sca.ServiceUnavailableException;
/**
* An SCA Node that is managed by the NodeManager
*/
public class NodeImpl implements Node, Client {
private static final Logger logger = Logger.getLogger(NodeImpl.class.getName());
private ProxyFactory proxyFactory;
private CompositeActivator compositeActivator;
private NodeConfiguration configuration;
private NodeFactoryImpl manager;
public NodeImpl(NodeFactoryImpl manager, NodeConfiguration configuration) {
super();
this.configuration = configuration;
this.manager = manager;
}
public void destroy() {
}
public Node start() {
logger.log(Level.INFO, "Starting node: " + configuration.getURI());
manager.init();
manager.addNode(configuration, this);
this.proxyFactory = manager.proxyFactory;
this.compositeActivator =
manager.extensionPoints.getExtensionPoint(UtilityExtensionPoint.class).getUtility(CompositeActivator.class,
true);
try {
compositeActivator.setDomainComposite(manager.configureNode(configuration));
for (Composite composite : compositeActivator.getDomainComposite().getIncludes()) {
// Activate the composite
compositeActivator.activate(composite);
// Start the composite
compositeActivator.start(composite);
}
NodeFinder.addNode(NodeUtil.createURI(configuration.getDomainURI()), this);
return this;
} catch (Exception e) {
throw new IllegalStateException(e);
}
}
public void stop() {
logger.log(Level.INFO, "Stopping node: " + configuration.getURI());
try {
if (compositeActivator == null) {
return;
}
NodeFinder.removeNode(this);
if( compositeActivator.getDomainComposite() != null ) {
List<Composite> composites = compositeActivator.getDomainComposite().getIncludes();
for (Composite composite : composites) {
// Stop the composite
compositeActivator.stop(composite);
// Deactivate the composite
compositeActivator.deactivate(composite);
} // end for
composites.clear();
} // end if
manager.removeNode(configuration);
this.compositeActivator = null;
this.proxyFactory = null;
} catch (ActivationException e) {
throw new IllegalStateException(e);
}
}
@SuppressWarnings("unchecked")
public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
return (R)proxyFactory.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 (Composite composite : compositeActivator.getDomainComposite().getIncludes()) {
for (Component compositeComponent : composite.getComponents()) {
if (compositeComponent.getName().equals(componentName)) {
component = compositeComponent;
}
}
}
if (component == null) {
throw new ServiceUnavailableException("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) {
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);
}
}
}
public NodeConfiguration getConfiguration() {
return configuration;
}
public ExtensionPointRegistry getExtensionPoints() {
return manager.getExtensionPoints();
}
/**
* Get the service endpoints in this Node
* TODO: needs review, works for the very simple testcase but i expect there are
* other endpoints to be included
*/
public List<Endpoint> getServiceEndpoints() {
List<Endpoint> endpoints = new ArrayList<Endpoint>();
if (compositeActivator != null) {
Composite domainComposite = compositeActivator.getDomainComposite();
if (domainComposite != null) {
for (Composite composite : domainComposite.getIncludes()) {
for (Component component : composite.getComponents()) {
for (Service service : component.getServices()) {
// MJE 28/05/2009 - changed to RuntimeComponentService from RuntimeComponentServiceImpl
// - no need to access the Impl directly here
if (service instanceof RuntimeComponentService) {
endpoints.addAll(((RuntimeComponentService)service).getEndpoints());
}
}
}
}
}
}
return endpoints;
}
}
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