fix: fixed req-validator config generation when both body and param schema are empty.

openapi2kong/oas3_testfiles/14-no-request-validator-plugin.yaml

@@ -19,6 +19,15 @@ paths:
       # there is nothing to validate here, so no plugin should be created
       summary: Get help
       operationId: getHelp
+      parameters:
+        # This would not be added to the req-validator plugin config
+        # as cookie type is not supported yet.
+        # A warning would be logged and this parameter would be ignored.
+        - in: cookie
+          name: cookieid
+          schema:
+            type: integer
+          required: true
       responses:
         '200':
           description: This is a success.

openapi2kong/validator.go

@@ -227,7 +227,7 @@ func generateValidatorPlugin(operationConfigJSON []byte, operation *v3.Operation
 		if err != nil {
 			return nil, err
 		}
-		if parameterSchema != nil {
+		if len(parameterSchema) != 0 {
 			config["parameter_schema"] = parameterSchema
 			config["version"] = JSONSchemaVersion
 		}