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fix(ingester): template underscore-glued ids in message normalization #3

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Merged
sagnik11 merged 1 commit into from
Jul 23, 2026
Merged

fix(ingester): template underscore-glued ids in message normalization #3

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10 changes: 10 additions & 0 deletions packages/otlp-ingester/src/fingerprint.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,13 +17,23 @@ const LONG_HEX_RE = /\b[0-9a-f]{8,}\b/gi;
// template too, or per-value messages fragment into separate fingerprints.
const NUMBER_RE = /\b\d+(\.\d+)?/g;
const QUOTED_RE = /(["'`])(?:\\.|(?!\1).)*\1/g;
// `\b` never fires between `_` and a digit (both are word chars), so
// underscore-glued ids — "prj_1013", "user_42", "order_9f3ac2d144" — escape
// NUMBER_RE/LONG_HEX_RE entirely and fragment one defect into an issue per
// id. Template the value after the underscore explicitly. (Letter-glued
// digits like "sha256"/"utf8" stay literal on purpose — those are usually
// meaningful tokens, not per-entity ids.)
const UNDERSCORE_HEX_RE = /_[0-9a-f]{8,}\b/gi;
const UNDERSCORE_NUMBER_RE = /_\d+(\.\d+)?\b/g;

export function normalizeMessage(message: string): string {
return message
.slice(0, 500)
.replace(QUOTED_RE, "<str>")
.replace(UUID_RE, "<uuid>")
.replace(LONG_HEX_RE, "<hex>")
.replace(UNDERSCORE_HEX_RE, "_<hex>")
.replace(UNDERSCORE_NUMBER_RE, "_<n>")
.replace(NUMBER_RE, "<n>")
.replace(/\s+/g, " ")
.trim();
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