OMF

Features for GEC9 Demos are described on this page.

Detailed description of this feature is available of this page.

The following new AM feature is required:

• PXE, Frisbee, CMC, Iventory and Result AMs will need to subscribe to Slice-related PubSub groups:
  • all of them are already subscribing to the System part of the PubSub tree in their own aggregate's PubSub server
  • they now should accept the following request (most likely issued by a Slice Manager AM):
    • Associate_to_Resource_At_Slice:
      • Inputs: "slice name" and "resource list" and "PubSub server hosting the slice"
      • Tasks: subscribe to the PubSub groups @OMF/sliceXYZ/resources and OMF/sliceXYZ/resources/resourceX for each resource in the list at the given PubSub server
  • and also (most likely issued by a Slice Manager AM on the OMF/sliceXYZ/resources):
    • Deassociate_from_Slice:
      • Inputs: "slice name" and "PubSub server hosting the slice"
      • Tasks: unsubscribe to all previously subscribed PubSub groups on and under OMF/sliceXYZ/resources at the given PubSub server
• Note: These AMs need to be able to re-subscribe to their previously subscribed PubSub groups in case of stop/restart

• Open question:
  • How to implement "memory across stop/restart" of which PubSub groups an AM has subscribed to?
    • Hard state kept at the AM itself? (e.g. CMC AM keeps record of subscribed PubSub group and resubscribed if it ever restart)
    • Soft state with periodic refresh/update message from Service Manager AM (e.g. CMC AM receives periodic list of PubSub groups it needs to subscribe to from the Service Manager AM)
    • Another alternative?