use only the DetectorKey as a map field (#2374)

pkg/engine/ahocorasick/ahocorasickcore.go

@@ -23,6 +23,9 @@ type DetectorKey struct {
 	customDetectorName string
 }
 
+// Type returns the detector type of the key.
+func (k DetectorKey) Type() detectorspb.DetectorType { return k.detectorType }
+
 // AhoCorasickCore encapsulates the operations and data structures used for keyword matching via the
 // Aho-Corasick algorithm. It is responsible for constructing and managing the trie for efficient
 // substring searches, as well as mapping keywords to their associated detectors for rapid lookups.

pkg/engine/engine.go

@@ -598,8 +598,8 @@ func (e *Engine) detectorWorker(ctx context.Context) {
 // by the same detector in the chunk. Exact matches on lookup indicate a duplicate secret for a detector
 // in that chunk - which is expected and not malicious. Those intra-detector dupes are still verified.
 type chunkSecretKey struct {
-	secret       string
-	detectorInfo ahocorasick.DetectorInfo
+	secret      string
+	detectorKey ahocorasick.DetectorKey
 }
 
 func likelyDuplicate(ctx context.Context, val chunkSecretKey, dupes map[chunkSecretKey]struct{}) bool {
@@ -615,7 +615,7 @@ func likelyDuplicate(ctx context.Context, val chunkSecretKey, dupes map[chunkSec
 
 		// If the detector type is the same, we don't need to compare the strings.
 		// These are not duplicates, and should be verified.
-		if val.detectorInfo.Type() == dupeKey.detectorInfo.Type() {
+		if val.detectorKey.Type() == dupeKey.detectorKey.Type() {
 			continue
 		}
 
@@ -674,7 +674,7 @@ func (e *Engine) verificationOverlapWorker(ctx context.Context) {
 				// Ex:
 				// - postman api key: PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r
 				// - malicious detector "api key": qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r
-				key := chunkSecretKey{secret: string(val), detectorInfo: detector}
+				key := chunkSecretKey{secret: string(val), detectorKey: detector.Key}
 				if _, ok := chunkSecrets[key]; ok {
 					continue
 				}

pkg/engine/engine_test.go

@@ -562,47 +562,47 @@ func TestLikelyDuplicate(t *testing.T) {
 	}{
 		{
 			name: "exact duplicate different detector",
-			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA},
+			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA.Key},
 			dupes: map[chunkSecretKey]struct{}{
-				{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorB}: {},
+				{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorB.Key}: {},
 			},
 			expected: true,
 		},
 		{
 			name: "non-duplicate length outside range",
-			val:  chunkSecretKey{"short", detectorA},
+			val:  chunkSecretKey{"short", detectorA.Key},
 			dupes: map[chunkSecretKey]struct{}{
-				{"muchlongerthanthevalstring", detectorB}: {},
+				{"muchlongerthanthevalstring", detectorB.Key}: {},
 			},
 			expected: false,
 		},
 		{
 			name: "similar within threshold",
-			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA},
+			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA.Key},
 			dupes: map[chunkSecretKey]struct{}{
-				{"qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorB}: {},
+				{"qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorB.Key}: {},
 			},
 			expected: true,
 		},
 		{
 			name: "similar outside threshold",
-			val:  chunkSecretKey{"anotherkey", detectorA},
+			val:  chunkSecretKey{"anotherkey", detectorA.Key},
 			dupes: map[chunkSecretKey]struct{}{
-				{"completelydifferent", detectorB}: {},
+				{"completelydifferent", detectorB.Key}: {},
 			},
 			expected: false,
 		},
 		{
 			name:     "empty strings",
-			val:      chunkSecretKey{"", detectorA},
-			dupes:    map[chunkSecretKey]struct{}{{"", detectorB}: {}},
+			val:      chunkSecretKey{"", detectorA.Key},
+			dupes:    map[chunkSecretKey]struct{}{{"", detectorB.Key}: {}},
 			expected: true,
 		},
 		{
 			name: "similar within threshold same detector",
-			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA},
+			val:  chunkSecretKey{"PMAK-qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA.Key},
 			dupes: map[chunkSecretKey]struct{}{
-				{"qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA}: {},
+				{"qnwfsLyRSyfCwfpHaQP1UzDhrgpWvHjbYzjpRCMshjt417zWcrzyHUArs7r", detectorA.Key}: {},
 			},
 			expected: false,
 		},