planetstack/openstack_observer/__init__.py

from planetstack.config import Config

try:
    observer_disabled = Config().observer_disabled
except:
    observer_disabled = False

print_once = True

if (not observer_disabled):
    from .event_manager import EventSender

    def notify_observer(model=None, delete=False, pk=None, model_dict={}):
        try:
            if (model and delete):
                if hasattr(model,"__name__"):
                    modelName = model.__name__
                else:
                    modelName = model.__class__.__name__
                EventSender().fire(delete_flag = delete, model = modelName, pk = pk, model_dict=model_dict)
            else:
                EventSender().fire()
        except Exception,e:
            print "Exception in Observer. This should not disrupt the front end. %s"%str(e)

else:
    def notify_observer(model=None, delete=False, pk=None, model_dict={}):
        global print_once
        if (print_once):
            print "The observer is disabled"
            print_once = False
        return