From 5057f7fbba17ee39ad1667d94ac2a59b95d16793 Mon Sep 17 00:00:00 2001
From: Avi Weinstock-Herman <wasbazi@gmail.com>
Date: Thu, 21 Apr 2016 16:14:38 -0600
Subject: [PATCH 1/2] Copy spec before validation occurs

---
 connexion/api.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/connexion/api.py b/connexion/api.py
index 95073a645..61e736625 100644
--- a/connexion/api.py
+++ b/connexion/api.py
@@ -15,6 +15,7 @@
 import logging
 import pathlib
 import sys
+import copy
 
 import flask
 import jinja2
@@ -87,7 +88,9 @@ def __init__(self, swagger_yaml_path, base_url=None, arguments=None,
 
         logger.debug('Read specification', extra=self.specification)
 
-        validate_spec(compatibility_layer(self.specification))
+        # Avoid validator having ability to modify specification
+        spec = copy.deepcopy(self.specification)
+        validate_spec(compatibility_layer(spec))
 
         # https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md#fixed-fields
         # If base_url is not on provided then we try to read it from the swagger.yaml or use / by default

From 6614d78bf53e27ae029cb46ab110b39c71b1fff6 Mon Sep 17 00:00:00 2001
From: Avi Weinstock-Herman <wasbazi@gmail.com>
Date: Fri, 22 Apr 2016 09:59:38 -0600
Subject: [PATCH 2/2] Add compatability_layer back to specification

---
 connexion/api.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/connexion/api.py b/connexion/api.py
index 61e736625..0ad97c0bf 100644
--- a/connexion/api.py
+++ b/connexion/api.py
@@ -11,11 +11,11 @@
  language governing permissions and limitations under the License.
 """
 
+import copy
 import json
 import logging
 import pathlib
 import sys
-import copy
 
 import flask
 import jinja2
@@ -88,9 +88,10 @@ def __init__(self, swagger_yaml_path, base_url=None, arguments=None,
 
         logger.debug('Read specification', extra=self.specification)
 
+        self.specification = compatibility_layer(self.specification)
         # Avoid validator having ability to modify specification
         spec = copy.deepcopy(self.specification)
-        validate_spec(compatibility_layer(spec))
+        validate_spec(spec)
 
         # https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md#fixed-fields
         # If base_url is not on provided then we try to read it from the swagger.yaml or use / by default