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ObservationReservoir

rama::ua::profile::evidence::reservoir

Struct ObservationReservoir 

pub struct ObservationReservoir { /* private fields */ }
Available on crate features std and ua only.
Expand description

Capacity bounds entry count. The value interner independently bounds payload bytes. Counting and duplicate admission belong to the enclosing ingestion transaction.

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impl ObservationReservoir

pub fn new( capacity: usize, seed: [u8; 32], scope: ValueId, ) -> ObservationReservoir

pub fn from_entries( capacity: usize, seed: [u8; 32], scope: ValueId, entries: &[ReservoirEntry], ) -> Result<ObservationReservoir, ProfileDataError>

Validate persisted priorities and canonical ordering before retaining entries.

pub fn entries(&self) -> &[ReservoirEntry]

pub fn observe( &mut self, observation: ObservationId, value: ValueId, ) -> Result<ReservoirUpdate, ProfileDataError>

Admit through the run checkpoint before updating counts or sampling. Repeating an evicted ID cannot be detected by a bounded reservoir alone.

pub fn merge( &self, other: &ObservationReservoir, ) -> Result<ObservationReservoir, ProfileDataError>

Merge disjoint retained day buckets by priority. Counts are merged separately. Equal IDs must reference the same complete observation in both inputs.

Trait Implementations§

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impl Clone for ObservationReservoir

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fn clone(&self) -> ObservationReservoir

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 ObservationReservoir

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

Formats the value using the given formatter. Read more

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