// 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(new 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;
}
