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Diffstat (limited to 'sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.cpp')
| -rw-r--r-- | sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.cpp | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.cpp b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.cpp new file mode 100644 index 0000000000..65d218dc86 --- /dev/null +++ b/sca-cpp/tags/cpp-0.1.incubating-M1-final/sca/runtime/core/src/tuscany/sca/core/ComponentServiceWrapper.cpp @@ -0,0 +1,204 @@ +/* + * + * 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/ComponentServiceWrapper.h" + +#include "tuscany/sca/util/Exceptions.h" +#include "tuscany/sca/util/Logging.h" +#include "tuscany/sca/core/SCARuntime.h" +#include "tuscany/sca/model/CPPImplementation.h" +using namespace osoa::sca; + +namespace tuscany +{ + namespace sca + { + // =================== + // Static data members + // =================== + void* ComponentServiceWrapper::staticImpl = 0; + + // =========== + // Constructor + // =========== + ComponentServiceWrapper::ComponentServiceWrapper(Service* target) + : ServiceWrapper(target), service(target) + { + LOGENTRY(1,"ComponentServiceWrapper::constructor"); + if (target->getServiceType() != WireTarget::ComponentServiceType) + { + throw ServiceRuntimeException("ComponentServiceWrapper: target is not a component service"); + } + + component = target->getComponent(); + interf = (CPPInterface*)target->getInterface(); + + remotable = interf->getRemotable(); + + + LOGEXIT(1,"ComponentServiceWrapper::constructor"); + + } + + // ========== + // Destructor + // ========== + ComponentServiceWrapper::~ComponentServiceWrapper() + { + LOGENTRY(1,"ComponentServiceWrapper::destructor"); + LOGEXIT(1,"ComponentServiceWrapper::destructor"); + } + + + // ====================================================================== + // getImplementation: get an implementation for this scope + // ====================================================================== + void* ComponentServiceWrapper::getImplementation() + { + CPPInterface::SCOPE scope = interf->getScope(); + if (scope == CPPInterface::MODULE) + { + if (!staticImpl) + { + staticImpl = newImplementation(); + } + return staticImpl; + } + else // (scope == CPPInterface::STATELESS) + { + return newImplementation(); + } + } + + // ====================================================================== + // releaseImplementation: release the implementation for this scope + // ====================================================================== + void ComponentServiceWrapper::releaseImplementation() + { + CPPInterface::SCOPE scope = interf->getScope(); + if (scope == CPPInterface::STATELESS) + { + deleteImplementation(); + } + } + + // ====================================================================== + // invoke: wrapper call to service with setting the component context + // ====================================================================== + void ComponentServiceWrapper::invoke(Operation& operation) + { + LOGENTRY(1,"ComponentServiceWrapper::invoke"); + + SCARuntime* runtime = SCARuntime::getInstance(); + runtime->setCurrentComponent(component); + + try + { + invokeService(operation); + } + catch (...) + { + runtime->unsetCurrentComponent(); + throw; + } + runtime->unsetCurrentComponent(); + LOGEXIT(1,"ComponentServiceWrapper::invoke"); + + } + + void ComponentServiceWrapper::setLibrary(Library* lib) + { + wrapperLibrary = lib; + } + + // ====================================================================== + // createServiceWrapper: create a wrapper for the target ComponentService + // ====================================================================== + ComponentServiceWrapper* ComponentServiceWrapper::createServiceWrapper(Service* service) + { + string msg; + ComponentServiceWrapper* serviceWrapper = 0; + + // ----------------------------------------------- + // Get the implementation for the target component + // ----------------------------------------------- + Component* targetComponent = service->getComponent(); + Implementation* impl = targetComponent->getImplementation(); + if (!impl) + { + msg = "Component " + targetComponent->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 wrapper factory name + // ---------------------------------------------------- + string dllName = ((CPPImplementation*)impl)->getDll(); + string wrapperFactoryName = ((CPPImplementation*)impl)->getHeaderStub() + + "_" + service->getName() + "_Wrapper_Factory"; + + // ------------ + // Load the dll + // ------------ + string fullDllName = targetComponent->getModule()->getRoot() + "/" + dllName; + typedef ComponentServiceWrapper* (* WRAPPERFACTORY) (Service*); + Library* wrapperLib = new Library(fullDllName); + + // ------------------------- + // Locate the factory method + // ------------------------- + WRAPPERFACTORY wrapperFactory = (WRAPPERFACTORY)wrapperLib->getSymbol(wrapperFactoryName); + if (!wrapperFactory) + { + LOGERROR_2(1, "ComponentServiceWrapper::createServiceWrapper: Unable to locate %s in library %s", + wrapperFactoryName.c_str(), fullDllName.c_str()); + msg = "Unable to locate " + wrapperFactoryName + " in library " + fullDllName; + throw ServiceNotFoundException(msg.c_str()); + } + + // ------------------------------------- + // Now create an instance of the wrapper + // ------------------------------------- + serviceWrapper = wrapperFactory(service); + if (!serviceWrapper) + { + LOGERROR_2(1, "ComponentServiceWrapper::createServiceWrapper: Factory method %s in library %s returned null", + wrapperFactoryName.c_str(), fullDllName.c_str()); + msg = "Factory method " + wrapperFactoryName + " in library " + fullDllName + " returned null"; + throw ServiceNotFoundException(msg.c_str()); + } + serviceWrapper->setLibrary(wrapperLib); + } + else + { + // ---------------------- + // Non CPP Implementation + // ---------------------- + msg = "Unsupported implementation type for service: " + service->getName(); + throw ServiceNotFoundException(msg.c_str()); + } + + return serviceWrapper; + } + + } // End namespace sca +} // End namespace tuscany |