OMF

Features for GEC9 Demos are described on this page.

Detailed description of this feature is available of this page.

The following new Slice Manager AM is required:

• Slice Manager AM will accept the following requests and perform the following tasks for now:
  • Create_Slice:
    • Inputs: "slice name" and "PubSub server hosting the slice"
    • Tasks: create the pubsub groups OMF/sliceXYZ and OMF/sliceXYZ/resources on the given PubSub server
  • Associate_Resource_to_Slice:
    • Inputs: "slice name" and "resource list" and "PubSub server hosting the slice"
    • Tasks: create the PubSub group OMF/sliceXYZ/resources/resourceX for each resource in the list, and send a request to the AM services responsible for the resources in the list to associate with the sliceXYZ on the given PubSub server
    • Note: in PlanetLab/ProtoGENI, a RSPEC (Resource Specification) is used instead of the "resource name"
      • the RSPEC allows the definition of a list of resources & some initial configuration parameters for these resources
      • our initial implementation will simply use "resource list", however it should be developed so that replacing this by an RSPEC-like form would require minimal changes
  • Delete_Slice:
    • Inputs: "slice name" and "PubSub server hosting the slice"
    • Tasks: request all the AMs subscribed to this slice to leave it (i.e. send a broadcast "Deassociate_from_Slice" to OMF/sliceXYZ/resources, and delete the pubsub groups OMF/sliceXYZ and OMF/sliceXYZ/resources on the given PubSub server
• Note: The Slice Manager AM will need to keep records of the current active slices if it ever gets stopped and restarted

• Open question:
  • Who creates the PubSub group /OMF/sliceXYZ/resources/resourceA?
    • Either the Slice Manager AM (on a Associate_Resource_to_Slice) request or the other AMs (on a Associate_to_Resource_At_Slice)
    • if other AMs, then we have a potential issue when deleting the slice's PubSub groups as, only the group creator can delete it, thus we would have to keep track of which AM created the group
    • if Slice Manager AM, only this AM has to keep track of which PubSub group it created
    • solution: Slice Manager AM?