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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.
*/
/* $Rev$ $Date: 2005/12/22 11:33:21 $ */
#include "tuscany/sca/core/ServiceProxy.h"
#include "tuscany/sca/util/Logging.h"
#include "tuscany/sca/util/Exceptions.h"
#include "tuscany/sca/core/SCARuntime.h"
#include "tuscany/sca/model/CPPImplementation.h"
using namespace osoa::sca;
namespace tuscany
{
namespace sca
{
// ============================
// Constructor: Create a proxy
// ============================
ServiceProxy::ServiceProxy(Component* component, const string& name, ServiceWrapper* target)
{
LOGENTRY(1,"ServiceProxy::constructor");
string msg;
// ----------------------
// Get the implementation
// ----------------------
Implementation* impl = component->getImplementation();
if (!impl)
{
msg = "Component " + component->getName() + " has no implementation defined";
throw ServiceNotFoundException(msg.c_str());
}
// TODO: This only handle CPP implementation for now
if (impl->getImplementationType() == Implementation::CPP)
{
// ----------------------------------------------------
// Get implementation dll name and service factory name
// ----------------------------------------------------
string dllName = ((CPPImplementation*)impl)->getDll();
string headerStub = ((CPPImplementation*)impl)->getHeaderStub();
string fullDllName = component->getModule()->getRoot() + "/" + dllName;
string proxyFactoryName = headerStub + "_" + name + "_Proxy_Factory";
string proxyDestructorName = headerStub + "_" + name + "_Proxy_Destructor";
typedef void* (* PROXYFACTORY) (ServiceWrapper*);
// ------------
// Load the dll
// ------------
proxyLibrary = Library(fullDllName);
// -------------------------
// Locate the factory method
// -------------------------
PROXYFACTORY proxyFactory = (PROXYFACTORY)proxyLibrary.getSymbol(proxyFactoryName);
if (!proxyFactory)
{
LOGERROR_2(1, "ComponentContextImpl::getServiceProxy: Unable to locate %s in library %s",
proxyFactoryName.c_str(), fullDllName.c_str());
msg = "Unable to locate " + proxyFactoryName + " in library " + fullDllName;
throw ServiceNotFoundException(msg.c_str());
}
// -----------------------------------
// Now create an instance of the proxy
// -----------------------------------
proxy = proxyFactory(target);
if (!proxy)
{
LOGERROR_2(1, "ComponentContextImpl::getServiceProxy: Factory method %s in library %s returned null",
proxyFactoryName.c_str(), fullDllName.c_str());
msg = "Factory method " + proxyFactoryName + " in library " + fullDllName + " returned null";
throw ServiceNotFoundException(msg.c_str());
}
// -------------------------
// Get the destructor method
// -------------------------
destructor = (PROXYDESTRUCTOR)proxyLibrary.getSymbol(proxyDestructorName);
}
LOGEXIT(1,"ServiceProxy::constructor");
}
// ==========
// Destructor
// ==========
ServiceProxy::~ServiceProxy()
{
LOGENTRY(1,"ServiceProxy::destructor");
// Delete the proxy
if (destructor)
{
destructor(proxy);
}
LOGEXIT(1,"ServiceProxy::destructor");
}
} // End namespace sca
} // End namespace tuscany
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