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ChangeRecord

laser_wire::change

Struct ChangeRecord 

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pub struct ChangeRecord {
    pub v: u32,
    pub index: String,
    pub partition_id: u32,
    pub from_offset: u64,
    pub to_offset: u64,
    pub rows: u32,
}
Expand description

One materialized-view advancement on the change feed: after committing a projector batch for a binding that opted in (ProjectionBinding.notify), the plane publishes one record naming the index, the partition, the offset window the batch covered, and how many rows landed. A consumer awaits the record then queries, instead of sleeping and retrying: change notification as records on a topic, consumed by offset, never a server-push watch (the substrate is a log). v1 scope is materialized-view advancement. Key-value and run-registry change records are candidate extensions of the same shape, not implied.

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§v: u32§index: String

The materialized index the batch advanced.

§partition_id: u32

The source partition the batch covered.

§from_offset: u64

First source offset in the committed batch.

§to_offset: u64

Last source offset in the committed batch (the new watermark).

§rows: u32

Rows the batch landed in the view.

Trait Implementations§

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impl Clone for ChangeRecord

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fn clone(&self) -> ChangeRecord

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 ChangeRecord

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for ChangeRecord

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Eq for ChangeRecord

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impl PartialEq for ChangeRecord

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fn eq(&self, other: &ChangeRecord) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl Serialize for ChangeRecord

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for ChangeRecord

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