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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.implementation.osgi.runtime;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Hashtable;
import org.apache.tuscany.sca.assembly.ComponentReference;
import org.apache.tuscany.sca.assembly.Extensible;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
import org.apache.tuscany.sca.implementation.osgi.OSGiProperty;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.provider.ImplementationProvider;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.oasisopen.sca.ServiceRuntimeException;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleException;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceRegistration;
/**
*
*/
public class OSGiImplementationProvider implements ImplementationProvider {
private RuntimeComponent component;
private ProxyFactoryExtensionPoint proxyFactoryExtensionPoint;
private Bundle osgiBundle;
private OSGiImplementation implementation;
public OSGiImplementationProvider(RuntimeComponent component,
OSGiImplementation impl,
ProxyFactoryExtensionPoint proxyFactoryExtensionPoint) throws BundleException {
this.component = component;
this.proxyFactoryExtensionPoint = proxyFactoryExtensionPoint;
this.implementation = impl;
this.osgiBundle = impl.getBundle();
}
public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
return new OSGiTargetInvoker(operation, this, service);
}
public void start() {
// First try to start the osgi bundle
try {
int state = osgiBundle.getState();
if ((state & Bundle.STARTING) == 0 && (state & Bundle.ACTIVE) == 0) {
osgiBundle.start();
}
} catch (BundleException e) {
throw new ServiceRuntimeException(e);
}
for (ComponentReference ref : component.getReferences()) {
RuntimeComponentReference reference = (RuntimeComponentReference)ref;
InterfaceContract interfaceContract = reference.getInterfaceContract();
JavaInterface javaInterface = (JavaInterface)interfaceContract.getInterface();
final Class<?> interfaceClass = javaInterface.getJavaClass();
final Hashtable<String, Object> osgiProps = getOSGiProperties(reference);
osgiProps.put(Constants.SERVICE_RANKING, Integer.MAX_VALUE);
osgiProps.put("sca.reference", component.getURI() + "#reference(" + ref.getName() + ")");
osgiProps.put(OSGiProperty.OSGI_REMOTE, "true");
osgiProps.put(OSGiProperty.OSGI_REMOTE_CONFIGURATION_TYPE, "sca");
osgiProps.put(OSGiProperty.OSGI_REMOTE_INTERFACES, interfaceClass.getName());
ProxyFactory proxyService = proxyFactoryExtensionPoint.getInterfaceProxyFactory();
if (!interfaceClass.isInterface()) {
proxyService = proxyFactoryExtensionPoint.getClassProxyFactory();
}
for (RuntimeWire wire : reference.getRuntimeWires()) {
final Object proxy = proxyService.createProxy(interfaceClass, wire);
AccessController.doPrivileged(new PrivilegedAction<ServiceRegistration>() {
public ServiceRegistration run() {
return osgiBundle.getBundleContext()
.registerService(interfaceClass.getName(), proxy, osgiProps);
}
});
}
}
}
public void stop() {
// Do we have to unregister the services?
try {
int state = osgiBundle.getState();
if ((state & Bundle.STOPPING) == 0 && (state & Bundle.ACTIVE) != 0) {
osgiBundle.stop();
}
} catch (BundleException e) {
throw new ServiceRuntimeException(e);
}
}
public boolean supportsOneWayInvocation() {
return false;
}
/**
* Get all the OSGi properties from the extension list
* @param extensible
* @return
*/
protected Hashtable<String, Object> getOSGiProperties(Extensible extensible) {
Hashtable<String, Object> props = new Hashtable<String, Object>();
for (Object ext : extensible.getExtensions()) {
if (ext instanceof OSGiProperty) {
OSGiProperty p = (OSGiProperty)ext;
props.put(p.getName(), p.getValue());
}
}
return props;
}
RuntimeComponent getComponent() {
return component;
}
OSGiImplementation getImplementation() {
return implementation;
}
}
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