Files
keyhunter/pkg/importer/dedup.go
salvacybersec 6a3d5b0cb7 feat(07-03): dedup helper for imported findings
- FindingKey: stable SHA-256 over provider+masked+source+line
- Dedup: preserves first-seen order, returns drop count
- 8 unit tests covering stability, field sensitivity, order preservation
2026-04-05 23:54:44 +03:00

43 lines
1.3 KiB
Go

package importer
import (
"crypto/sha256"
"encoding/hex"
"fmt"
"github.com/salvacybersec/keyhunter/pkg/engine"
)
// FindingKey returns a stable identity hash for a finding based on the
// provider name, masked key, source path, and line number. This is the
// dedup identity used by import pipelines so the same underlying secret
// is not inserted twice when re-importing the same scanner output.
//
// Fields outside this tuple (DetectedAt, Confidence, VerifyStatus, ...)
// intentionally do not contribute to the key: re-running the same import
// at a later time must collapse onto the original finding.
func FindingKey(f engine.Finding) string {
payload := fmt.Sprintf("%s\x00%s\x00%s\x00%d", f.ProviderName, f.KeyMasked, f.Source, f.LineNumber)
sum := sha256.Sum256([]byte(payload))
return hex.EncodeToString(sum[:])
}
// Dedup removes duplicate findings from in-memory slices before insert.
// Order of first-seen findings is preserved. Returns the deduplicated
// slice and the number of duplicates dropped.
func Dedup(in []engine.Finding) ([]engine.Finding, int) {
seen := make(map[string]struct{}, len(in))
out := make([]engine.Finding, 0, len(in))
dropped := 0
for _, f := range in {
k := FindingKey(f)
if _, ok := seen[k]; ok {
dropped++
continue
}
seen[k] = struct{}{}
out = append(out, f)
}
return out, dropped
}