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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.core.assembly;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import org.apache.tuscany.sca.assembly.Endpoint;
import org.apache.tuscany.sca.assembly.Reference;
import org.apache.tuscany.sca.core.invocation.InvocationChainImpl;
import org.apache.tuscany.sca.endpointresolver.EndpointResolver;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.InvocationChain;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
import org.apache.tuscany.sca.runtime.EndpointReference;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.osoa.sca.ServiceUnavailableException;
/**
* @version $Rev$ $Date$
*/
public class EndpointWireImpl implements RuntimeWire {
private Endpoint endpoint;
private CompositeActivatorImpl compositeActivator;
private EndpointResolver endpointResolver;
private EndpointReference source;
private RuntimeWire wire;
private InvocationChain binidngInvocationChain;
/**
* @param endpoint
*/
public EndpointWireImpl(Endpoint endpoint, CompositeActivator compositeActivator) {
super();
this.endpoint = endpoint;
// TODO - improve the SPI to get rid of this cast
this.compositeActivator = (CompositeActivatorImpl)compositeActivator;
// store source configuration as we have most of this now. We don't though know what the
// target is yet.
Reference componentTypeRef = endpoint.getSourceComponentReference().getReference();
InterfaceContract sourceContract =
componentTypeRef == null ? endpoint.getSourceComponentReference().getInterfaceContract() : componentTypeRef.getInterfaceContract();
sourceContract = sourceContract.makeUnidirectional(false);
source = new EndpointReferenceImpl((RuntimeComponent)endpoint.getSourceComponent(),
endpoint.getSourceComponentReference(),
null,
sourceContract);
RuntimeComponentReference runtimeRef = ((RuntimeComponentReference)endpoint.getSourceComponentReference());
endpointResolver = runtimeRef.getEndpointResolver(endpoint);
}
public synchronized List<InvocationChain> getInvocationChains() {
// where late binding happens. Find the endpoint provider and
// ask it to do the endpoint resolution.
if (endpoint.isUnresolved()){
// this method should locate a viable target service and complete the
// endpoint configuration
endpointResolver.resolve();
if (endpoint.isUnresolved()){
throw new ServiceUnavailableException("Unable to resolve service for component: " +
endpoint.getSourceComponent().getName() +
" reference: " +
endpoint.getSourceComponentReference().getName() +
" target: " +
endpoint.getTargetName());
}
}
if (wire == null){
RuntimeComponentReference runtimeRef = ((RuntimeComponentReference)endpoint.getSourceComponentReference());
// add the resolved binding into the reference
runtimeRef.getBindings().add(endpoint.getSourceBinding());
// add a binding provider into the reference for the resolved binding
compositeActivator.addReferenceBindingProviderForEndpoint(endpoint);
// extract the binding provider that has been created
ReferenceBindingProvider bindingProvider = runtimeRef.getBindingProvider(endpoint.getSourceBinding());
// start the binding provider
bindingProvider.start();
// create the wire
compositeActivator.addReferenceWireForEndpoint(endpoint);
// extract the wire that has been created
wire = runtimeRef.getRuntimeWire(endpoint.getSourceBinding());
}
return wire.getInvocationChains();
}
public InvocationChain getInvocationChain(Operation operation) {
if (wire ==null){
return null;
} else {
return wire.getInvocationChain(operation);
}
}
public Object invoke(Message msg) throws InvocationTargetException {
// not called as the endpoint wire only appears on the reference side
return null;
}
public Object invoke(Operation operation, Object[] args) throws InvocationTargetException {
// not called as the endpoint wire only appears on the reference side
return null;
}
public Object invoke(Operation operation, Message msg) throws InvocationTargetException {
// not called as the endpoint wire only appears on the reference side
return null;
}
public EndpointReference getSource() {
return source;
}
public EndpointReference getTarget() {
return null;
}
public void setTarget(EndpointReference target) {
}
public void rebuild() {
}
public synchronized InvocationChain getBindingInvocationChain() {
if (binidngInvocationChain == null) {
if (source instanceof RuntimeComponentReference) {
binidngInvocationChain = new InvocationChainImpl(null, null, true);
} else {
binidngInvocationChain = new InvocationChainImpl(null, null, false);
}
}
return binidngInvocationChain;
}
// TODO: TUSCANY-2580: give RuntimeComponentReferenceImpl a way to get at the endpoint
public Endpoint getEndpoint() {
return endpoint;
}
/**
* @see java.lang.Object#clone()
*/
@Override
public Object clone() throws CloneNotSupportedException {
EndpointWireImpl copy = (EndpointWireImpl)super.clone();
return copy;
}
}
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