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InMemoryCheckpointStore

oxirs_stream::fault_tolerance::checkpoint

Struct InMemoryCheckpointStore 

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

In-memory snapshot store used in tests and as a default for embedded deployments. Production deployments swap this for an oxirs-cluster-backed snapshot store.

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impl InMemoryCheckpointStore

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pub fn new() -> Self

Build an empty store.

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pub fn len(&self) -> usize

Total number of snapshots currently in the store.

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pub fn is_empty(&self) -> bool

True when no snapshots are stored.

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impl CheckpointStore for InMemoryCheckpointStore

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fn put<'life0, 'async_trait>( &'life0 self, snap: OperatorSnapshot, ) -> Pin<Box<dyn Future<Output = CheckpointResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Persist a single operator snapshot.
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fn get<'life0, 'life1, 'async_trait>( &'life0 self, operator: &'life1 OperatorId, checkpoint: CheckpointId, ) -> Pin<Box<dyn Future<Output = CheckpointResult<Option<OperatorSnapshot>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Load a snapshot by (operator, checkpoint) pair, if any.
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fn latest<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = CheckpointResult<Option<CheckpointId>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Latest committed checkpoint id, if any. Used by the recovery path to pick the most recent global snapshot.
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impl Default for InMemoryCheckpointStore

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fn default() -> Self

Returns the “default value” for a type. Read more

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