Added leeway protection against expired tokens. (#13)

Author: tehmufifnman

CHANGELOG.md

@@ -30,3 +30,7 @@
 ## 2.3.0 (06-05-2019)
 
 * Add profile api
+
+## 2.3.1 (20-05-2019)
+
+* Added some leeway protection against expired tokens

setup.py

@@ -3,7 +3,7 @@
 from setuptools import setup, find_packages
 
 
-__version__ = '2.3.0'
+__version__ = '2.3.1'
 
 
 def read(*parts):

wowapi/api.py

@@ -121,9 +121,11 @@ def get_resource(self, resource, region, *args, **filters):
             logger.info('Fetching access token..')
             self._get_client_credentials(region)
         else:
-            now = datetime.utcnow()
-            # refresh access token if expired
-            if now >= self._access_tokens[region]['expiration']:
+            now = self._utcnow()
+            # refresh access token if expiring in the next 30 seconds.
+            # this protects against the rare occurrence of hitting
+            # the API right as your token expires, causing errors.
+            if now >= self._access_tokens[region]['expiration'] - timedelta(seconds=30):
                 logger.info('Access token expired. Fetching new token..')
                 self._get_client_credentials(region)