/*
* 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 java.net.URI;
import java.util.logging.Level;
import java.util.logging.Logger;
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.ws.DefaultWebServiceBindingFactory;
import org.apache.tuscany.sca.binding.ws.WebServiceBinding;
import org.apache.tuscany.sca.binding.ws.axis2.Axis2ReferenceBindingProvider;
import org.apache.tuscany.sca.core.assembly.EndpointReferenceImpl;
import org.apache.tuscany.sca.domain.SCADomainEventService;
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.interfacedef.wsdl.java2wsdl.Java2WSDLHelper;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.node.NodeFactory;
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;
/**
* 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 ReferenceBindingProvider {
private final static Logger logger = Logger.getLogger(Axis2SCAReferenceBindingProvider.class.getName());
private NodeFactory nodeFactory;
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(NodeFactory nodeFactory,
RuntimeComponent component,
RuntimeComponentReference reference,
DistributedSCABinding binding,
ServletHost servletHost,
MessageFactory messageFactory) {
this.nodeFactory = nodeFactory;
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().resetDataBinding(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 supportsOneWayInvocation() {
return false;
}
public Invoker createInvoker(Operation operation) {
return new Axis2SCABindingInvoker(this, axisReferenceBindingProvider.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(){
String endpointURL = null;
if (binding.getURI() != null) {
// check if the binding URI is already resolved if it is use is if not
try {
URI uri = new URI(binding.getURI());
if (uri.isAbsolute()) {
endpointURL = binding.getURI();
}
} catch(Exception ex) {
// do nothing
}
if ( endpointURL == null) {
SCADomainEventService domainProxy = (SCADomainEventService)nodeFactory.getNode().getDomain();
try {
endpointURL = domainProxy.findServiceEndpoint(nodeFactory.getNode().getDomain().getURI(),
binding.getURI(),
binding.getClass().getName());
} catch (Exception ex) {
logger.log(Level.WARNING,
"Unable to find service service: " +
nodeFactory.getNode().getDomain().getURI() + " " +
nodeFactory.getNode().getURI() + " " +
binding.getURI() + " " +
binding.getClass().getName());
}
if (endpointURL.equals(domainProxy.SERVICE_NOT_REGISTERED)){
throw new IllegalStateException("Can't resolve reference as no SCA binding URI is available while trying to find target service. Component: "+
component.getName() +
" and reference: " +
reference.getName() );
}
}
}
binding.setURI(endpointURL);
serviceEPR = new EndpointReferenceImpl(binding.getURI());
/*
if ( serviceEPR == null && nodeFactory.getNode() != null ){
// try to resolve the service endpoint with the registry
SCADomainEventService domainProxy = (SCADomainEventService)nodeFactory.getNode().getDomain();
if (domainProxy != null){
// The binding URI might be null in the case where this reference is completely
// dynamic, for example, in the case of callbacks
String bindingURIString = binding.getURI();
if (bindingURIString != null) {
String serviceURL = null;
URI bindingURI = null;
// first time through here assume that the binding URI is correct
try {
bindingURI = new URI(bindingURIString);
if (bindingURI.isAbsolute()){
serviceURL = bindingURIString;
}
} catch(Exception ex) {
}
if ( serviceURL == null) {
try {
serviceURL = domainProxy.findServiceEndpoint(nodeFactory.getNode().getDomain().getURI(),
bindingURI.getPath(),
binding.getClass().getName());
} catch (Exception ex) {
logger.log(Level.WARNING,
"Unable to find service service: " +
nodeFactory.getNode().getDomain().getURI() + " " +
nodeFactory.getNode().getURI() + " " +
binding.getURI() + " " +
binding.getClass().getName());
}
}
if ( (serviceURL != null ) &&
(!serviceURL.equals(""))){
serviceEPR = new EndpointReferenceImpl(serviceURL);
}
}
} else {
throw new IllegalStateException("No domain service available while trying to find component: "+
component.getName() +
" and service: " +
reference.getName());
}
}
*/
return serviceEPR;
}
/**
* Go back to the distributed domain to go and get the service endpoint
*
* @return An EPR for the target service that this reference refers to
*/
public EndpointReference refreshServiceEndpoint(){
serviceEPR= null;
return getServiceEndpoint();
}
/**
* 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();
}
}