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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.binding.axis2.handler;
import java.lang.reflect.Method;
import javax.xml.namespace.QName;
import javax.xml.parsers.FactoryConfigurationError;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
import org.apache.axis2.context.MessageContextConstants;
import org.apache.axis2.om.OMElement;
import org.apache.tuscany.binding.axis2.assembly.WebServiceBinding;
import org.apache.tuscany.binding.axis2.util.AxiomHelper;
import org.apache.tuscany.model.assembly.ExternalService;
import org.osoa.sca.ServiceRuntimeException;
import commonj.sdo.helper.TypeHelper;
/**
* An ExternalWebServiceClient using Axis2
*/
public class ExternalWebServiceClient {
private ExternalService externalService;
private TypeHelper typeHelper;
private WebServicePortMetaData wsPortMetaData;
/**
* Constructs a new ExternalWebServiceClient.
*
* @param externalService
* @param wsBinding
*/
public ExternalWebServiceClient(ExternalService externalService, WebServiceBinding wsBinding, TypeHelper typeHelper) {
this.externalService = externalService;
this.typeHelper=typeHelper;
this.wsPortMetaData = new WebServicePortMetaData(wsBinding.getWSDLDefinition(), wsBinding.getWSDLPort(), wsBinding.getURI(), false);
}
/**
* Invoke an operation on the external Web service.
*
* @param method
* @param args
* @return
*/
public Object invoke(Method method, Object[] args) {
ServiceClient serviceClient;
ClassLoader ccl=Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(ExternalWebServiceClient.class.getClassLoader());
serviceClient = createServiceClient(method);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
String typeName = method.getName();
String typeNS = wsPortMetaData.getPortType().getQName().getNamespaceURI();
OMElement requestOM = AxiomHelper.toOMElement(typeHelper, args, new QName(typeNS, typeName));
OMElement responseOM;
ccl=Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(ExternalWebServiceClient.class.getClassLoader());
responseOM = serviceClient.sendReceive(requestOM);
} catch (AxisFault e) {
throw new ServiceRuntimeException(e);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
Object[] os = AxiomHelper.toObjects(typeHelper, responseOM);
Object response;
if (os == null || os.length < 1) {
response = null;
} else {
response = os[0];
}
return response;
}
private ServiceClient createServiceClient(Method method) throws FactoryConfigurationError {
/*
* TODO: Simlistic impl for now, needs to be redone. Should cache our ConfigurationContext and pass in on ServiceClient constructor, should
* probably use WSDL configured Axis2 OperationClient
*/
Options options = new Options();
options.setProperty(Constants.Configuration.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, Boolean.TRUE);
WebServiceOperationMetaData operationMetaData = wsPortMetaData.getOperationMetaData(method.getName());
EndpointReference targetEPR = new EndpointReference(wsPortMetaData.getEndpoint());
options.setTo(targetEPR);
String soapAction = operationMetaData.getSOAPAction();
if (soapAction != null) {
options.setSoapAction(soapAction);
}
// If use is encoded assume its an old style service and wont understand chunking
if ("encoded".equals(operationMetaData.getUse())) {
options.setProperty(MessageContextConstants.CHUNKED, Boolean.FALSE);
}
ServiceClient serviceClient;
try {
serviceClient = new ServiceClient();
} catch (org.apache.axis2.AxisFault e) {
throw new RuntimeException(e);
}
serviceClient.setOptions(options);
return serviceClient;
}
}
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