// ChangeLightRepresentaion is an observation function,
// which notifies any changes to the resource to stack
// via notifyObservers
void * ChangeLightRepresentation (void *param)
{
LightResource* lightPtr = (LightResource*) param;
// This function continuously monitors for the changes
while (1)
{
sleep (3);
if (gObservation)
{
// If under observation if there are any changes to the light resource
// we call notifyObservors
//
// For demostration we are changing the power value and notifying.
lightPtr->m_power += 10;
cout << "\nPower updated to : " << lightPtr->m_power << endl;
cout << "Notifying observers with resource handle: " << lightPtr->getHandle() << endl;
OCStackResult result = OC_STACK_OK;
if(isListOfObservers)
{
std::shared_ptr<OCResourceResponse> resourceResponse =
{std::make_shared<OCResourceResponse>()};
resourceResponse->setErrorCode(200);
resourceResponse->setResourceRepresentation(lightPtr->get(), DEFAULT_INTERFACE);
result = OCPlatform::notifyListOfObservers( lightPtr->getHandle(),
lightPtr->m_interestedObservers,
resourceResponse);
}
else
{
result = OCPlatform::notifyAllObservers(lightPtr->getHandle());
}
if(OC_STACK_NO_OBSERVERS == result)
{
cout << "No More observers, stopping notifications" << endl;
gObservation = 0;
}
}
}
return NULL;
}
void * handleSlowResponse (void *param, std::shared_ptr<OCResourceRequest> pRequest)
{
// This function handles slow response case
LightResource* lightPtr = (LightResource*) param;
// Induce a case for slow response by using sleep
std::cout << "SLOW response" << std::endl;
sleep (10);
auto pResponse = std::make_shared<OC::OCResourceResponse>();
pResponse->setRequestHandle(pRequest->getRequestHandle());
pResponse->setResourceHandle(pRequest->getResourceHandle());
pResponse->setResourceRepresentation(lightPtr->get());
pResponse->setErrorCode(200);
pResponse->setResponseResult(OC_EH_OK);
// Set the slow response flag back to false
isSlowResponse = false;
OCPlatform::sendResponse(pResponse);
return NULL;
}