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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.host.embedded.impl;
import java.util.HashMap;
import java.util.Map;
import javax.xml.namespace.QName;
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.assembly.SCABinding;
import org.apache.tuscany.sca.contribution.service.ContributionService;
import org.apache.tuscany.sca.core.runtime.ActivationException;
import org.apache.tuscany.sca.core.runtime.CompositeActivator;
import org.apache.tuscany.sca.host.embedded.SCADomain;
import org.osoa.sca.CallableReference;
import org.osoa.sca.ComponentContext;
import org.osoa.sca.Constants;
import org.osoa.sca.ServiceReference;
import org.osoa.sca.ServiceRuntimeException;
/**
* An SCA domain facade implementation.
*
* @version $Rev$ $Date$
*/
public class EmbeddedSCADomain extends SCADomain {
private String uri;
private Composite domainComposite;
private ReallySmallRuntime runtime;
private Map<String, Component> components = new HashMap<String, Component>();
private DomainCompositeHelper domainCompositeHelper;
public class DomainCompositeHelper {
/**
* Add a composite to the domain
* @param composite
* @return
*/
public Composite addComposite(Composite composite) throws ActivationException {
domainComposite.getIncludes().add(composite);
CompositeActivator compositeActivator = runtime.getCompositeActivator();
compositeActivator.activate(composite);
for (Component component : composite.getComponents()) {
components.put(component.getName(), component);
}
return composite;
}
/**
* Remove a composite from the domain
* @param composite
* @throws ActivationException
*/
public void removeComposite(Composite composite) throws ActivationException {
CompositeActivator compositeActivator = runtime.getCompositeActivator();
compositeActivator.deactivate(composite);
domainComposite.getIncludes().remove(composite);
for (Component component : composite.getComponents()) {
components.remove(component.getName());
}
}
/**
* Start a composite
* @param composite
* @throws ActivationException
*/
public void startComposite(Composite composite) throws ActivationException {
CompositeActivator compositeActivator = runtime.getCompositeActivator();
compositeActivator.start(composite);
}
/**
* Stop a composite
* @param composite
* @throws ActivationException
*/
public void stopComposite(Composite composite) throws ActivationException {
CompositeActivator compositeActivator = runtime.getCompositeActivator();
compositeActivator.stop(composite);
}
}
/**
* Constructs a new domain facade.
*
* @param runtimeClassLoader
* @param domainURI
*/
public EmbeddedSCADomain(ClassLoader runtimeClassLoader,
String domainURI) {
this.uri = domainURI;
// Create a runtime
runtime = new ReallySmallRuntime(runtimeClassLoader);
}
public void start() throws ActivationException {
// Start the runtime
runtime.start();
// Create an in-memory domain level composite
AssemblyFactory assemblyFactory = runtime.getAssemblyFactory();
domainComposite = assemblyFactory.createComposite();
domainComposite.setName(new QName(Constants.SCA_NS, "domain"));
domainComposite.setURI(uri);
// Create a domain composite helper
domainCompositeHelper = new DomainCompositeHelper();
}
public void stop() throws ActivationException {
// Stop the runtime
runtime.stop();
// Cleanup
domainComposite = null;
domainCompositeHelper = null;
}
public ContributionService getContributionService() {
return runtime.getContributionService();
}
public DomainCompositeHelper getDomainCompositeHelper() {
return domainCompositeHelper;
}
@Override
public void close() {
super.close();
}
@Override
public <B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException {
// TODO Auto-generated method stub
return null;
}
@Override
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();
}
@Override
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 in the domain
Component component = components.get(componentName);
if (component == null) {
throw new ServiceRuntimeException("Component not found: " + componentName);
}
ComponentContext 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) {
ComponentService promotedService = null;
for (ComponentService componentService : component.getServices()) {
if (serviceName == null || serviceName.equals(componentService.getName())) {
CompositeService compositeService = (CompositeService)componentService.getService();
if (compositeService != null) {
promotedService = compositeService.getPromotedService();
SCABinding scaBinding = promotedService.getBinding(SCABinding.class);
if (scaBinding != null) {
Component promotedComponent = scaBinding.getComponent();
if (serviceName != null) {
serviceName = "$promoted$." + serviceName;
}
componentContext = (ComponentContext)promotedComponent;
}
}
break;
}
}
if (componentContext == null) {
throw new ServiceRuntimeException("Composite service not found: " + name);
}
} else {
componentContext = (ComponentContext)component;
}
ServiceReference<B> serviceReference;
if (serviceName != null) {
serviceReference = componentContext.createSelfReference(businessInterface, serviceName);
} else {
serviceReference = componentContext.createSelfReference(businessInterface);
}
return serviceReference;
}
@Override
public String getURI() {
return uri;
}
}
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