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SourceProvidedGenerator

laminar_core::time

Struct SourceProvidedGenerator 

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

Watermark generator for sources with embedded watermarks.

Some sources (like Kafka with EOS) may provide watermarks directly. This generator tracks both event timestamps and explicit watermarks.

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impl SourceProvidedGenerator

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pub fn new(fallback_lateness: i64, prefer_source: bool) -> Self

Creates a new source-provided generator.

§Arguments
  • fallback_lateness - Lateness for fallback bounded generator
  • prefer_source - If true, source watermarks take precedence
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pub fn on_source_watermark(&mut self, watermark: i64) -> Option<Watermark>

Updates the watermark from the source.

Call this when the source provides an explicit watermark.

Trait Implementations§

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impl WatermarkGenerator for SourceProvidedGenerator

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fn on_event(&mut self, timestamp: i64) -> Option<Watermark>

Process an event timestamp and potentially emit a new watermark. Read more
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fn on_periodic(&mut self) -> Option<Watermark>

Called periodically to emit watermarks based on wall-clock time. Read more
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fn current_watermark(&self) -> i64

Returns the current watermark value without advancing it.

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impl<T> Any for T
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fn type_id(&self) -> TypeId

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type ArchivedMetadata = ()

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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

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type Metadata = ()

The metadata type for pointers and references to this type.
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