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SourcePosition

laminar_connectors::connector

Enum SourcePosition 

Source 
pub enum SourcePosition {
    Initial,
    Initialized {
        checkpoint: SourceCheckpoint,
    },
    Resume {
        attempt: CheckpointAttempt,
        checkpoint: SourceCheckpoint,
    },
}
Expand description

Atomic startup position for a source connector.

A resume request carries both the durable checkpoint attempt and the connector checkpoint captured by that attempt. Connectors must install the position before start returns and before poll_batch can emit records.

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Initial

Start from the connector’s configured deterministic initial position.

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Initialized

Install the complete unowned cursor sealed for a new topology source. This boundary is not processed history and carries no checkpoint attempt or acknowledgement. Only connectors with a certified sealed-start contract accept it. The caller must retain intake until the committed topology’s coordinated Release.

Fields

§checkpoint: SourceCheckpoint

Exact global cursor, validated and filtered by current source ownership at startup.

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Resume

Resume from an exact durable engine checkpoint.

Fields

§attempt: CheckpointAttempt

Checkpoint attempt that owns the connector state.

§checkpoint: SourceCheckpoint

Connector cursor captured by attempt.

Trait Implementations§

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impl Clone for SourcePosition

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SourcePosition

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

Formats the value using the given formatter. Read more

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