Called by higher layers to create the plugin SDN node instance.

Called by higher layers to create the proxy plugin instance; only used by nodes.

Run event queue for the given resource.

rule versioning; increment each time flow rules change.

EventQueue is an enhanced DeltaFIFO that provides reliable Deleted deltas even if no knownObjects store is given, and compresses multiple deltas to reduce duplicate events.

Function should process one object delta, which represents a change notification for a single object.