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proto/bloom: add BloomFilter::fpr() and use it for the false-positive-rate

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The false-positive-rate primitive (fill ratio raised to the hash count) was
inlined at three sites. Hoist it into a BloomFilter::fpr() method and call it
from all three; the threshold/policy logic stays at the call sites. Behavior
and result bytes are unchanged.
This commit is contained in:
Johnathan Corgan
2026-07-08 19:00:24 +00:00
parent 4ad5940114
commit b53db662c3
2 changed files with 8 additions and 3 deletions
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src/node/bloom.rs
+2 -2
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@@ -87,7 +87,7 @@ impl Node {
// operator to see one clear message, not spam.
let max_fpr = self.config().node.bloom.max_inbound_fpr;
let out_fill = sent_filter.fill_ratio();
let out_fpr = out_fill.powi(sent_filter.hash_count() as i32);
let out_fpr = sent_filter.fpr();
if out_fpr > max_fpr {
let now = std::time::Instant::now();
let should_warn = self
@@ -213,7 +213,7 @@ impl Node {
// to wipe a victim's contribution to aggregation.
let max_fpr = self.config().node.bloom.max_inbound_fpr;
let fill = announce.filter.fill_ratio();
let fpr = fill.powi(announce.filter.hash_count() as i32);
let fpr = announce.filter.fpr();
if fpr > max_fpr {
self.metrics()
.bloom