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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.corba.provider.service;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.binding.corba.provider.exceptions.RequestConfigurationException;
import org.apache.tuscany.sca.binding.corba.provider.types.TypeTree;
import org.apache.tuscany.sca.binding.corba.provider.types.TypeTreeCreator;
import org.apache.tuscany.sca.binding.corba.provider.types.util.TypeHelpersProxy;
import org.apache.tuscany.sca.binding.corba.provider.types.util.Utils;
import org.omg.CORBA.MARSHAL;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.InvokeHandler;
import org.omg.CORBA.portable.ObjectImpl;
import org.omg.CORBA.portable.OutputStream;
import org.omg.CORBA.portable.ResponseHandler;
/**
* @version $Rev$ $Date$
* General servant which provides target component implementation via CORBA
*/
public class DynaCorbaServant extends ObjectImpl implements InvokeHandler {
private static final Logger logger = Logger.getLogger(DynaCorbaServant.class.getName());
private String[] ids;
private InvocationProxy invocationProxy;
private String typeId;
/**
* Creates servant object
* @param invocationProxy
* @param typeId
* @throws RequestConfigurationException
*/
public DynaCorbaServant(InvocationProxy invocationProxy, String typeId) throws RequestConfigurationException {
this.invocationProxy = invocationProxy;
this.typeId = typeId;
setDefaultIds();
}
/**
* Sets CORBA object ID
* @param ids
*/
public void setIds(String[] ids) {
for (int i = 0; i < ids.length; i++) {
if (ids[i] == null || ids[i].length() == 0) {
// if invalid id was passed then set to default
setDefaultIds();
return;
}
}
this.ids = ids;
}
public OutputStream _invoke(String operationName, InputStream in, ResponseHandler rh) {
OperationTypes types = invocationProxy.getOperationTypes(operationName);
if (types == null) {
// operation wasn't found
throw new org.omg.CORBA.BAD_OPERATION(0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);
} else {
List<Object> inputInstances = new ArrayList<Object>();
try {
// retrieving in arguments
for (TypeTree tree : types.getInputType()) {
Object o = TypeHelpersProxy.read(tree.getRootNode(), in);
inputInstances.add(o);
}
} catch (MARSHAL e) {
// parameter passed by user was not compatible with Java to
// Corba mapping
throw new org.omg.CORBA.BAD_PARAM(0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);
}
try {
// invocation and sending result
Object result = invocationProxy.invoke(operationName, inputInstances);
OutputStream out = rh.createReply();
if (types.getOutputType() != null) {
TypeTree tree = types.getOutputType();
TypeHelpersProxy.write(tree.getRootNode(), out, result);
}
return out;
} catch (InvocationException ie) {
// handling user exception
try {
OutputStream out = rh.createExceptionReply();
Class<?> exceptionClass = ie.getTargetException().getClass();
TypeTree tree = TypeTreeCreator.createTypeTree(exceptionClass, null);
String exceptionId = Utils.getTypeId(exceptionClass);
out.write_string(exceptionId);
TypeHelpersProxy.write(tree.getRootNode(), out, ie.getTargetException());
return out;
} catch (Exception e) {
logger.log(Level.WARNING, "Exception during handling invocation exception", e);
}
} catch (Exception e) {
logger.log(Level.WARNING, "Unexpected exception during sending CORBA result to client", e);
}
}
return null;
}
@Override
public String[] _ids() {
return ids;
}
/**
* Sets servant ID to default, based on Java class name
*/
private void setDefaultIds() {
this.ids = new String[] {typeId};
}
}
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