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BarrierCoordinator

laminar_core::cluster::control::barrier

Struct BarrierCoordinator 

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pub struct BarrierCoordinator { /* private fields */ }
Expand description

Cross-instance barrier coordination over a ClusterKv.

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impl BarrierCoordinator

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pub fn new(kv: Arc<dyn ClusterKv>) -> Self

Wrap a KV implementation.

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pub async fn announce(&self, ann: &BarrierAnnouncement) -> Result<(), String>

Leader-side announce.

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Returns a string on JSON encode failure.

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pub async fn observe( &self, leader: NodeId, ) -> Result<Option<BarrierAnnouncement>, String>

Follower-side observe.

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Returns a string on JSON decode failure.

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pub async fn ack(&self, ack: &BarrierAck) -> Result<(), String>

Follower-side ack.

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Returns a string on JSON encode failure.

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pub async fn wait_for_quorum( &self, epoch: u64, expected: &[NodeId], deadline: Duration, ) -> QuorumOutcome

Leader-side: poll acks every 50 ms until quorum or deadline.

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impl Debug for BarrierCoordinator

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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