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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.binding.hazelcast;
import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.Callable;
import org.apache.tuscany.sca.common.xml.dom.DOMHelper;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.util.FaultException;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
import org.oasisopen.sca.NoSuchServiceException;
import org.oasisopen.sca.ServiceRuntimeException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
public class ServiceInvoker implements Callable<String>, Serializable {
private static final long serialVersionUID = 1L;
// all fields MUST be Serializable
private String serviceURI;
private String operationName;
private String requestXML;
public ServiceInvoker(String serviceURI, String operationName, String msgXML) {
this.serviceURI = serviceURI;
this.operationName = operationName;
this.requestXML = msgXML;
}
public String call() throws Exception {
RuntimeEndpoint endpoint = EndpointStash.getEndpoint(serviceURI);
if (endpoint == null) {
throw new NoSuchServiceException(serviceURI);
}
Operation operation = getRequestOperation(endpoint);
DOMHelper domHelper = DOMHelper.getInstance(endpoint.getCompositeContext().getExtensionPointRegistry());
Object[] args = getRequestArgs(domHelper);
String responseXML;
try {
Object response = endpoint.invoke(operation, args);
responseXML = getResponseXML(domHelper, response);
} catch (Exception e) {
if (e instanceof InvocationTargetException && ((InvocationTargetException)e).getTargetException() instanceof FaultException) {
responseXML = "DECLAREDEXCEPTION:" + getResponseXML(domHelper, ((FaultException)((InvocationTargetException)e).getTargetException()).getFaultInfo());
} else {
responseXML = "EXCEPTION: " + e.getClass() + ":" + e.getMessage();
}
}
return responseXML;
}
private Operation getRequestOperation(RuntimeEndpoint endpoint) {
InterfaceContract ic = endpoint.getBindingInterfaceContract();
Interface iface = ic.getInterface();
for (Operation op : iface.getOperations()) {
if (op.getName().equals(operationName)) {
return op;
}
}
// TODO: return err msg
throw new ServiceRuntimeException("operation not found " + operationName);
}
private Object[] getRequestArgs(DOMHelper domHelper) throws IOException, SAXException {
Document requestDOM = domHelper.load(requestXML);
return new Object[] {requestDOM};
}
private String getResponseXML(DOMHelper domHelper, Object response) {
String responseXML = domHelper.saveAsString((Node)response);
return responseXML;
}
}
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