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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.java.invocation;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.assembly.Contract;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.assembly.Implementation;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
import org.apache.tuscany.sca.core.invocation.CallbackInterfaceInterceptor;
import org.apache.tuscany.sca.implementation.java.JavaImplementation;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
import org.apache.tuscany.sca.invocation.InvocationChain;
import org.apache.tuscany.sca.invocation.Phase;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
import org.apache.tuscany.sca.runtime.RuntimeEndpointReference;
import org.apache.tuscany.sca.runtime.RuntimeWireProcessor;
/**
* @version $Rev$ $Date$
*/
public class JavaCallbackRuntimeWireProcessor implements RuntimeWireProcessor {
private static final Logger logger = Logger.getLogger(JavaCallbackRuntimeWireProcessor.class.getName());
private InterfaceContractMapper interfaceContractMapper;
private JavaInterfaceFactory javaInterfaceFactory;
public JavaCallbackRuntimeWireProcessor(ExtensionPointRegistry registry) {
FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class);
this.javaInterfaceFactory = factories.getFactory(JavaInterfaceFactory.class);
UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
this.interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class);
}
/**
* @param interfaceContractMapper
* @param javaInterfaceFactory
*/
protected JavaCallbackRuntimeWireProcessor(InterfaceContractMapper interfaceContractMapper,
JavaInterfaceFactory javaInterfaceFactory) {
super();
this.interfaceContractMapper = interfaceContractMapper;
this.javaInterfaceFactory = javaInterfaceFactory;
}
private boolean supportsCallbackInterface(Interface iface, JavaImplementation impl) {
if (iface instanceof JavaInterface) {
Class<?> ifaceClass = ((JavaInterface)iface).getJavaClass();
if (ifaceClass.isAssignableFrom(impl.getJavaClass())) {
return true;
}
}
try {
Interface implType = javaInterfaceFactory.createJavaInterface(impl.getJavaClass());
// Ignore the remotable/conversational testing
implType.setRemotable(iface.isRemotable());
return interfaceContractMapper.isCompatibleSubset(iface, implType);
} catch (InvalidInterfaceException e) {
logger.log(Level.WARNING, e.getMessage(), e);
return false;
}
}
public void process(RuntimeEndpoint endpoint) {
// No operation
}
public void process(RuntimeEndpointReference endpointReference) {
if(!(endpointReference instanceof RuntimeEndpointReference)) {
return;
}
RuntimeEndpointReference epr = (RuntimeEndpointReference) endpointReference;
Contract contract = epr.getReference();
if (!(contract instanceof RuntimeComponentReference)) {
return;
}
RuntimeComponent component = (RuntimeComponent) epr.getComponent();
if (component == null) {
return;
}
Implementation implementation = component.getImplementation();
if (!(implementation instanceof JavaImplementation)) {
return;
}
JavaImplementation javaImpl = (JavaImplementation)implementation;
Endpoint callbackEndpoint = epr.getCallbackEndpoint();
if (callbackEndpoint != null) {
Interface iface = callbackEndpoint.getService().getInterfaceContract().getInterface();
if (!supportsCallbackInterface(iface, javaImpl)) {
// callback to this impl is not possible, so ensure a callback object is set
for (InvocationChain chain : epr.getInvocationChains()) {
chain.addInterceptor(Phase.REFERENCE, new CallbackInterfaceInterceptor());
}
}
}
}
}
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