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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.
*/
/* $Rev$ $Date$ */
#include "tuscany/sca/cpp/CPPServiceWrapper.h"
#include "osoa/sca/ServiceRuntimeException.h"
#include "tuscany/sca/util/Logging.h"
#include "tuscany/sca/util/Utils.h"
#include "tuscany/sca/util/Library.h"
#include "tuscany/sca/model/Component.h"
#include "tuscany/sca/model/Composite.h"
#include "tuscany/sca/model/Service.h"
#include "tuscany/sca/model/ServiceType.h"
#include "tuscany/sca/core/SCARuntime.h"
#include "tuscany/sca/cpp/model/CPPImplementation.h"
#include "tuscany/sca/model/Interface.h"
using namespace osoa::sca;
namespace tuscany
{
namespace sca
{
namespace cpp
{
// ===================
// Static data members
// ===================
void* CPPServiceWrapper::staticImpl = 0;
// ===========
// Constructor
// ===========
CPPServiceWrapper::CPPServiceWrapper(Service* service)
: ServiceWrapper(service)
{
LOGENTRY(1,"CPPServiceWrapper::constructor");
component = service->getComponent();
interf = service->getType()->getInterface();
implementation = (CPPImplementation*)component->getType();
LOGEXIT(1,"CPPServiceWrapper::constructor");
}
// ==========
// Destructor
// ==========
CPPServiceWrapper::~CPPServiceWrapper()
{
LOGENTRY(1,"CPPServiceWrapper::destructor");
LOGEXIT(1,"CPPServiceWrapper::destructor");
}
// ======================================================================
// getImplementation: get an implementation for this scope
// ======================================================================
void* CPPServiceWrapper::getImplementation()
{
if (implementation->getScope() == CPPImplementation::COMPOSITE)
{
if (!staticImpl)
{
staticImpl = newImplementation();
}
return staticImpl;
}
else // (scope == CPPInterface::STATELESS)
{
return newImplementation();
}
}
// ======================================================================
// releaseImplementation: release the implementation for this scope
// ======================================================================
void CPPServiceWrapper::releaseImplementation()
{
if (implementation->getScope() == CPPImplementation::STATELESS)
{
deleteImplementation();
}
}
// ======================================================================
// invoke: wrapper call to service with setting the component context
// ======================================================================
void CPPServiceWrapper::invoke(Operation& operation)
{
LOGENTRY(1,"CPPServiceWrapper::invoke");
SCARuntime* runtime = SCARuntime::getInstance();
runtime->setCurrentComponent(component);
try
{
invokeService(operation);
}
catch (...)
{
runtime->unsetCurrentComponent();
throw;
}
runtime->unsetCurrentComponent();
LOGEXIT(1,"CPPServiceWrapper::invoke");
}
void CPPServiceWrapper::setLibrary(Library* lib)
{
wrapperLibrary = lib;
}
// ======================================================================
// getServiceWrapper: create a wrapper for the target ComponentService
// ======================================================================
CPPServiceWrapper* CPPServiceWrapper::getServiceWrapper(Service* service)
{
CPPServiceWrapper* serviceWrapper = 0;
// -----------------------------------------------
// Get the implementation for the target component
// -----------------------------------------------
Component* component = service->getComponent();
CPPImplementation* impl = (CPPImplementation*)component->getType();
if (!impl)
{
string msg = "Component " + component->getName() + " has no implementation defined";
throw ServiceNotFoundException(msg.c_str());
}
// ----------------------------------------------------
// Get implementation dll name and wrapper factory name
// ----------------------------------------------------
string libraryName = impl->getLibrary();
string wrapperFactoryName = impl->getHeaderStub()
+ "_" + service->getType()->getName() + "_Wrapper_Factory";
// ------------
// Load the dll
// ------------
string fullLibraryName = component->getComposite()->getRoot() + "/" + libraryName;
typedef CPPServiceWrapper* (* WRAPPERFACTORY) (Service*);
Library* wrapperLib = new Library(fullLibraryName);
// -------------------------
// Locate the factory method
// -------------------------
WRAPPERFACTORY wrapperFactory = (WRAPPERFACTORY)wrapperLib->getSymbol(wrapperFactoryName);
if (!wrapperFactory)
{
LOGERROR_2(1, "CPPServiceWrapper::getServiceWrapper: Unable to locate %s in library %s",
wrapperFactoryName.c_str(), fullLibraryName.c_str());
string msg = "Unable to locate " + wrapperFactoryName + " in library " + fullLibraryName;
throw ServiceNotFoundException(msg.c_str());
}
// -------------------------------------
// Now create an instance of the wrapper
// -------------------------------------
serviceWrapper = wrapperFactory(service);
if (!serviceWrapper)
{
LOGERROR_2(1, "CPPServiceWrapper::getServiceWrapper: Factory method %s in library %s returned null",
wrapperFactoryName.c_str(), fullLibraryName.c_str());
string msg = "Factory method " + wrapperFactoryName + " in library " + fullLibraryName + " returned null";
throw ServiceNotFoundException(msg.c_str());
}
serviceWrapper->setLibrary(wrapperLib);
return serviceWrapper;
}
} // End namespace cpp
} // End namespace sca
} // End namespace tuscany
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