Moved 'interface' definition of StateDB to oidcservice.

Python 3.4 doesn't work

Author: rohe

setup.py

@@ -60,7 +60,6 @@ def run_tests(self):
     classifiers=[
         "Development Status :: 4 - Beta",
         "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Topic :: Software Development :: Libraries :: Python Modules"],

src/oidcrp/__init__.py

@@ -15,6 +15,7 @@
 from oidcservice import rndstr
 from oidcservice.exception import OidcServiceError
 from oidcservice.state_interface import StateInterface
+from oidcservice.state_interface import InMemoryStateDataBase
 
 from oidcrp import oauth2
 from oidcrp import oidc
@@ -48,20 +49,6 @@ def token_secret_key(sid):
 CLIENT_CONFIG = {}
 
 
-class InMemoryStateDataBase(object):
-    def __init__(self):
-        self.db = {}
-
-    def set(self, key, value):
-        self.db[key] = value
-
-    def get(self, key):
-        try:
-            return self.db[key]
-        except KeyError:
-            return None
-
-
 def add_path(url, path):
     if url.endswith('/'):
         if path.startswith('/'):