Insulating Hardware with the Event Notifier
PHLOPS wishes to communicate to a DCM (control object):
“Please download code xyz”
At startup/configuration time,
the Event Notifier registers itself with the Name Server (A)
the Object Manager (there can be more than one) registers itself with the Name Server and gets hold of the Event Notifier service (B)
The Object Manager instantiates the DCM control object and registers its interest in certain messages with the Event Notifier (C).
PHLOPS sends the request to the Event Notifier (1) which forwards it to the DCM object with the proper name. If an acknowledgement is required, it will take the inverse route.