/*
* 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.binding.sca.axis2.impl;
import org.apache.axiom.om.OMElement;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.SCABinding;
import org.apache.tuscany.sca.binding.sca.DistributedSCABinding;
import org.apache.tuscany.sca.binding.sca.impl.SCABindingImpl;
import org.apache.tuscany.sca.binding.ws.DefaultWebServiceBindingFactory;
import org.apache.tuscany.sca.binding.ws.WebServiceBinding;
import org.apache.tuscany.sca.binding.ws.axis2.Axis2ReferenceBindingProvider;
import org.apache.tuscany.sca.binding.ws.axis2.Java2WSDLHelper;
import org.apache.tuscany.sca.core.assembly.EndpointReferenceImpl;
import org.apache.tuscany.sca.distributed.domain.DistributedSCADomain;
import org.apache.tuscany.sca.distributed.management.ServiceDiscovery;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.provider.ReferenceBindingProvider2;
import org.apache.tuscany.sca.runtime.EndpointReference;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
/**
* The reference binding provider for the remote sca binding implementation. Relies on the
* binding-ws-axis implementation for sending messages to remote services to this provider
* just uses the ws-axis provider.
*
* @version $Rev: 563772 $ $Date: 2007-08-08 07:50:49 +0100 (Wed, 08 Aug 2007) $
*/
public class Axis2SCAReferenceBindingProvider implements ReferenceBindingProvider2 {
private RuntimeComponent component;
private RuntimeComponentReference reference;
private SCABinding binding;
private Axis2ReferenceBindingProvider axisReferenceBindingProvider;
private WebServiceBinding wsBinding;
private EndpointReference serviceEPR = null;
private EndpointReference callbackEPR = null;
public Axis2SCAReferenceBindingProvider(RuntimeComponent component,
RuntimeComponentReference reference,
DistributedSCABinding binding,
ServletHost servletHost,
MessageFactory messageFactory) {
this.component = component;
this.reference = reference;
this.binding = binding.getSCABinding();
wsBinding = (new DefaultWebServiceBindingFactory()).createWebServiceBinding();
// Turn the java interface contract into a wsdl interface contract
InterfaceContract contract = reference.getInterfaceContract();
if ((contract instanceof JavaInterfaceContract)) {
contract = Java2WSDLHelper.createWSDLInterfaceContract((JavaInterfaceContract)contract);
}
// Set to use the Axiom data binding
contract.getInterface().setDefaultDataBinding(OMElement.class.getName());
wsBinding.setBindingInterfaceContract(contract);
wsBinding.setName(this.binding.getName());
axisReferenceBindingProvider = new Axis2ReferenceBindingProvider(component,
reference,
wsBinding,
servletHost,
messageFactory);
}
public InterfaceContract getBindingInterfaceContract() {
return wsBinding.getBindingInterfaceContract();
}
public boolean supportsAsyncOneWayInvocation() {
return false;
}
public Invoker createInvoker(Operation operation) {
return new Axis2SCABindingInvoker(this, axisReferenceBindingProvider.createInvoker(operation));
}
@Deprecated
public Invoker createInvoker(Operation operation, boolean isCallback) {
if (isCallback) {
throw new UnsupportedOperationException();
} else {
return createInvoker(operation);
}
}
/**
* Uses the distributed domain service discovery feature to locate remote
* service endpoints
*
* @return An EPR for the target service that this reference refers to
*/
public EndpointReference getServiceEndpoint(){
if ( serviceEPR == null ){
// try to resolve the service endpoint with the registry
DistributedSCADomain distributedDomain = ((SCABindingImpl)binding).getDistributedDomain();
ServiceDiscovery serviceDiscovery = distributedDomain.getServiceDiscovery();
// The binding URI might be null in the case where this reference is completely
// dynamic, for example, in the case of callbacks
if (binding.getURI() != null) {
String serviceUrl = serviceDiscovery.findServiceEndpoint(distributedDomain.getDomainName(),
binding.getURI(),
SCABinding.class.getName());
if ( (serviceUrl != null ) &&
(!serviceUrl.equals(""))){
serviceEPR = new EndpointReferenceImpl(serviceUrl);
}
}
}
return serviceEPR;
}
/**
* Retrieves the uri of the callback service (that this reference has created)
* returns null if there is no callback service for the sca binding
*
* @return the callback endpoint
*/
public EndpointReference getCallbackEndpoint(){
if (callbackEPR == null) {
if (reference.getCallbackService() != null) {
for (Binding callbackBinding : reference.getCallbackService().getBindings()) {
if (callbackBinding instanceof SCABinding) {
callbackEPR = new EndpointReferenceImpl(reference.getName() + "/" + callbackBinding.getName());
continue;
}
}
}
}
return callbackEPR;
}
public SCABinding getSCABinding () {
return binding;
}
public RuntimeComponent getComponent () {
return component;
}
public RuntimeComponentReference getComponentReference () {
return reference;
}
public void start() {
// Try and resolve the service endpoint just in case it is available now
getServiceEndpoint();
axisReferenceBindingProvider.start();
}
public void stop() {
axisReferenceBindingProvider.stop();
}
}