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ProcessActivation

laminar_db::process_function

Struct ProcessActivation 

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pub struct ProcessActivation {
    pub id: u64,
    pub key: Arc<[u8]>,
    pub key_text: String,
    pub event_time_us: i64,
    pub callback: ProcessCallback,
    pub state: ValueState,
}
Expand description

One engine-assigned activation. Local id values follow the checkpointed operator sequence. Private cluster execution encodes a checkpointed vnode sequence and its fixed vnode index; replay identity requires the same callback order within that vnode. The key is the canonical partition ABI encoding and must never be rehashed by the handler. Preserving these IDs also requires the same watermark cuts relative to input and timer callbacks. V1 does not certify deterministic replay of an independent-channel merge.

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§id: u64

Logical callback identity within the pipeline and operator, subject to its replay order.

§key: Arc<[u8]>

Host-assigned canonical key bytes.

§key_text: String

The v1 UTF-8 key value, retained for callbacks after input has passed.

§event_time_us: i64

Per-activation UTC event time in microseconds.

§callback: ProcessCallback

Callback kind and optional data row.

§state: ValueState

Consistent state before this activation.

Trait Implementations§

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impl Clone for ProcessActivation

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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 ProcessActivation

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

Formats the value using the given formatter. Read more

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