From 04d61b9d97d6fcabe6b43ae5bd819da2bfe1c7b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cristi=20V=C3=AEjdea?= <cristi@cvjd.me>
Date: Sun, 23 Dec 2018 15:33:55 +0200
Subject: [PATCH] Log errors details of SwaggerValidationError

---
 src/drf_yasg/codecs.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/drf_yasg/codecs.py b/src/drf_yasg/codecs.py
index 5644943..c942929 100644
--- a/src/drf_yasg/codecs.py
+++ b/src/drf_yasg/codecs.py
@@ -2,6 +2,7 @@ from six import raise_from
 
 import copy
 import json
+import logging
 from collections import OrderedDict
 
 from coreapi.compat import force_bytes
@@ -10,6 +11,7 @@ from ruamel import yaml
 from . import openapi
 from .errors import SwaggerValidationError
 
+logger = logging.getLogger(__name__)
 
 def _validate_flex(spec):
     from flex.core import parse as validate_flex
@@ -70,7 +72,10 @@ class _OpenAPICodec(object):
                 errors[validator] = str(e)
 
         if errors:
-            raise SwaggerValidationError("spec validation failed", errors, spec, self)
+            exc = SwaggerValidationError("spec validation failed: {}".format(errors), errors, spec, self)
+            logger.warning(str(exc))
+            raise exc
+
         return force_bytes(self._dump_dict(spec))
 
     def encode_error(self, err):