Clean up SessionStateImpl lifecycle
SessionStateImpl is inherently bound to statistics updater, hence
it needs to follow bind/unbind lifecycle. This has the benefit of
better isolation -- which is demonstrated by removal of unneeded
listenerState clearing.
On the side of TopologyStatsProviderImpl, we are gaining the benefits of
Registration atomicity, and therefore have a better reign over
invoke-once semantics.
JIRA: BGPCEP-1005
Change-Id: I1b58fc9891c0bfb2a7084cc6eccf9c56b41cd8fc
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
Code Review / bgpcep.git / commit