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CheckpointDecisionStore

laminar_core::cluster::control::decision

Struct CheckpointDecisionStore 

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

Per-epoch commit marker store. Presence means committed; absence means the leader never reached the commit point (safe to abort).

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impl CheckpointDecisionStore

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pub fn new(store: Arc<dyn ObjectStore>) -> Self

Wrap an existing object store.

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pub async fn record_committed(&self, epoch: u64) -> Result<bool, DecisionError>

CAS-create the commit marker for epoch. Ok(true) means our write landed; Ok(false) means someone else recorded first (idempotent — retries after commit are cheap no-ops).

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Object-store I/O.

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pub async fn is_committed(&self, epoch: u64) -> Result<bool, DecisionError>

True iff a commit marker exists for epoch.

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Object-store I/O.

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pub async fn prune_before(&self, before: u64) -> Result<(), DecisionError>

Delete commit markers for epoch < before. Called by the checkpoint coordinator after its state-backend prune so markers don’t accumulate one-per-checkpoint forever.

§Errors

Object-store I/O.

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impl Debug for CheckpointDecisionStore

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

Formats the value using the given formatter. Read more

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