Fix throttle decode value from redis (#666)

* Fix decode value from redis

* Fix

plugin/action/throttle/redis_limiter.go

@@ -207,7 +207,7 @@ func (l *redisLimiter) updateLimiterValues(maxID, bucketIdx int, totalLimiterVal
 }
 
 func getLimitValFromJson(data []byte, valField string) (int64, error) {
-	var m map[string]json.Number
+	var m map[string]json.RawMessage
 	reader := bytes.NewReader(data)
 	if err := json.NewDecoder(reader).Decode(&m); err != nil {
 		return 0, fmt.Errorf("failed to unmarshal map: %w", err)
@@ -216,7 +216,7 @@ func getLimitValFromJson(data []byte, valField string) (int64, error) {
 	if !has {
 		return 0, fmt.Errorf("no %q key in map", valField)
 	}
-	return limitVal.Int64()
+	return json.Number(bytes.Trim(limitVal, `"`)).Int64()
 }
 
 // updateKeyLimit reads key limit from redis and updates current limit.

plugin/action/throttle/redis_limiter_test.go

@@ -367,6 +367,15 @@ func Test_getLimitValFromJson(t *testing.T) {
 			want:    3000,
 			wantErr: false,
 		},
+		{
+			name: "ok_with_object",
+			args: args{
+				data:     []byte(`{"limit_key":"3000","some_obj":{"field":"key"}}`),
+				valField: "limit_key",
+			},
+			want:    3000,
+			wantErr: false,
+		},
 		{
 			name: "unmarshal_error",
 			args: args{