tree 5d6a18c0b822accc5c279240c0d7e52ca071a361
parent aad79488d417eefafd4102bda9bd10d6473cf6c7
author Serge Bazanski <serge@nexantic.com> 1623943260 +0200
committer Sergiusz Bazanski <serge@nexantic.com> 1625509176 +0000

m/n/core/curator: implement gRPC listener

This implements the Curator listener and listener dispatcher, two
runnables responsible for maintaining an active Curator RPC
implementation (either leader or follower) and switching over
appropriately as the election status changes.

This might be overengineered. The implementation switchover logic and
context joining could possibly be ripped out and replaced by plain gRPC
socket close and re-open on switchover.

Testing plan: implements unit tests for switching/dispatching.

Change-Id: Ib62195b336d0754d99865d7a2a32ba2ffa3543ce
Reviewed-on: https://review.monogon.dev/c/monogon/+/185
Reviewed-by: Lorenz Brun <lorenz@nexantic.com>