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RecoveredState

laminar_db::recovery_manager

Struct RecoveredState 

Source 
pub struct RecoveredState {
    pub manifest: CheckpointManifest,
    pub sources_restored: usize,
    pub tables_restored: usize,
    pub sinks_rolled_back: usize,
    pub source_errors: HashMap<String, String>,
    pub sink_errors: HashMap<String, String>,
}
Expand description

Result of a successful recovery from a checkpoint.

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§manifest: CheckpointManifest

The manifest that was loaded and restored from.

§sources_restored: usize

Number of sources successfully restored.

§tables_restored: usize

Number of table sources successfully restored.

§sinks_rolled_back: usize

Number of sinks rolled back.

§source_errors: HashMap<String, String>

Sources that failed to restore (name → error message).

§sink_errors: HashMap<String, String>

Sinks that failed to roll back (name → error message).

Implementations§

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impl RecoveredState

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pub fn epoch(&self) -> u64

Returns the recovered epoch.

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pub fn watermark(&self) -> Option<i64>

Returns the recovered watermark.

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pub fn has_errors(&self) -> bool

Returns whether there were any errors during recovery.

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pub fn operator_states(&self) -> &HashMap<String, OperatorCheckpoint>

Returns the recovered operator states (for DAG restoration).

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pub fn wal_position(&self) -> u64

Returns the WAL position from the manifest.

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pub fn per_core_wal_positions(&self) -> &[u64]

Returns the per-core WAL positions from the manifest.

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pub fn table_store_checkpoint_path(&self) -> Option<&str>

Returns the table store checkpoint path, if any.

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pub fn has_inflight_data(&self) -> bool

Returns whether this checkpoint has in-flight data (unaligned checkpoint).

When true, the caller should replay the in-flight events before resuming normal processing to maintain exactly-once semantics.

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pub fn inflight_data(&self) -> &HashMap<String, Vec<InFlightRecord>>

Returns the in-flight data from an unaligned checkpoint.

Key: operator name. Value: list of in-flight records per input channel.

Trait Implementations§

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impl Debug for RecoveredState

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

Formats the value using the given formatter. Read more

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