ml

internal/issues/tracker.go

@@ -153,7 +153,7 @@ func NewTracker() *Tracker {
 // fingerprint.
 func (t *Tracker) Record(kind, service, title string, sample Sample) {
 	normalizeSample(&sample, title)
-	id := fingerprint(kind, service, NormalizeTitle(title))
+	id := Fingerprint(kind, service, NormalizeTitle(title))
 	bucket := HourBucket(sample.Timestamp)
 
 	t.mu.Lock()
@@ -174,7 +174,7 @@ func (t *Tracker) Record(kind, service, title string, sample Sample) {
 			NormalizedTitle: NormalizeTitle(title),
 		}
 		issue.PatternSignature = patternSignature(kind, service, title, sample)
-		issue.PatternID = fingerprint("pattern", issue.PatternSignature)
+		issue.PatternID = Fingerprint("pattern", issue.PatternSignature)
 		t.issues[id] = issue
 	}
 
@@ -653,7 +653,10 @@ func decodeStatus(encoded string) string {
 	return b.String()
 }
 
-func fingerprint(parts ...string) string {
+// Fingerprint creates the stable opaque identifier used for canonical issue
+// grouping. Normalization uses it for error rows so offline feature exports
+// can count the same issue identity as the live issue tracker.
+func Fingerprint(parts ...string) string {
 	h := fnv.New64a()
 	_, _ = h.Write([]byte(strings.Join(parts, "\x00")))
 	return fmt.Sprintf("%016x", h.Sum64())