prisma-risk / tsoracle / 26368639128

95%

Build Type

push

github

Committed by web-flow

Commit Message

refactor(driver-openraft): narrow OpenraftHighWaterHost to a metrics-only accessor (#95) (#296)

`OpenraftHighWaterHost::raft()` handed out a full `&Raft<C, SM>`, but the
driver's only use of it is `host.raft().metrics()`. The wide accessor forced
the `StateMachine` associated type onto the trait and blocked piggy-back hosts:
a host whose raft binds to its own state machine cannot fit a
`&Raft<C, HighWaterStateMachine>`.

Replace `raft()` (and the now-dead `StateMachine` type) with the narrower
accessor the driver actually needs:

    fn metrics(&self) -> WatchReceiverOf<Self::Config, RaftMetrics<Self::Config>>;

StandaloneHost and the piggy-back example implement it as `self.raft.metrics()`
and keep their `Raft` privately for `current_high_water` / `submit_advance`.
`owned_leadership_stream` calls `host.metrics()` directly.

Add a compile test: a host backed only by a metrics watch receiver — owning no
`Raft<C, HighWaterStateMachine>` — satisfies the trait, proving the surface no
longer couples hosts to a specific state machine.

Coverage Stats

20 of 20 new or added lines in 3 files covered. (100.0%)

2 existing lines in 1 file now uncovered.

11067 of 11673 relevant lines covered (94.81%)

507705.02 hits per line