pub enum BatchDecision {
Keep,
Empty,
Filter,
}Expand description
What the bound decides about one archived batch.
Variants§
Keep
No predicate touches the batch. It is written verbatim, so its bytes stay byte-identical to the archived copy.
Empty
Every record in the batch is excluded. The batch’s offset range is
still written, as a bare header with zero records:
krabka_log::filter_batch calls this outcome
krabka_log::FilteredBatch::Empty and leaves the caller to decide
what an emptied batch becomes, and for a restore that must preserve
offsets, the bare header preserves the original sequence span and
exclusive log end even when no record survives. The bare header keeps
the archived base_offset and last_offset_delta unchanged, exactly as
krabka’s own log cleaner does on its RETAIN_EMPTY path for the same reason.
Filter
Some records survive. The batch is re-encoded from the records that
Predicates::decide_record keeps, so its bytes differ from the
archived copy. krabka_log::filter_batch keeps the batch’s
base_offset and the survivors’ deltas. The materializer restores the
archived last_offset_delta after filtering, preserving both record
coordinates and the producer sequence span.
Trait Implementations§
Source§impl Clone for BatchDecision
impl Clone for BatchDecision
Source§fn clone(&self) -> BatchDecision
fn clone(&self) -> BatchDecision
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreimpl Copy for BatchDecision
Source§impl Debug for BatchDecision
impl Debug for BatchDecision
impl Eq for BatchDecision
Source§impl PartialEq for BatchDecision
impl PartialEq for BatchDecision
impl StructuralPartialEq for BatchDecision
Auto Trait Implementations§
impl Freeze for BatchDecision
impl RefUnwindSafe for BatchDecision
impl Send for BatchDecision
impl Sync for BatchDecision
impl Unpin for BatchDecision
impl UnsafeUnpin for BatchDecision
impl UnwindSafe for BatchDecision
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