Sem-Ver: feature Cache Backend verifiers.

Signed-off-by: David Black <[email protected]>

Author: dbaxa

atlassian_jwt_auth/frameworks/common/backend.py

@@ -1,4 +1,8 @@
 from abc import ABCMeta, abstractmethod, abstractproperty
+try:
+    from functools import lru_cache
+except ImportError:
+    from backports.functools_lru_cache import lru_cache
 
 from atlassian_jwt_auth import HTTPSPublicKeyRetriever, JWTAuthVerifier
 
@@ -85,7 +89,10 @@ def get_verifier(self, settings=None):
         """Returns a verifier for ASAP JWT tokens"""
         if settings is None:
             settings = self.settings
+        return self._get_verifier(settings)
 
+    @lru_cache(maxsize=130)
+    def _get_verifier(self, settings):
         retriever = settings.ASAP_KEY_RETRIEVER_CLASS(
             base_url=settings.ASAP_PUBLICKEY_REPOSITORY
         )

atlassian_jwt_auth/frameworks/flask/tests/test_flask.py

@@ -64,7 +64,6 @@ def test_request_with_valid_token_is_allowed(self):
         )
         self.assertEqual(self.send_request(token).status_code, 200)
 
-    @unittest.expectedFailure
     def test_request_with_duplicate_jti_is_rejected(self):
         token = create_token(
             'client-app', 'server-app',

requirements.txt

@@ -2,3 +2,4 @@ cryptography>=2.8.0,<2.9.0
 PyJWT>=1.5.2,<2.0.0
 requests>=2.8.1,<3.0.0
 CacheControl==0.12.6
+backports.functools-lru-cache==1.6.1