frontends: ping: minor adjustments and fixes for interface compliance

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

Author: c00kiemon5ter

src/satosa/frontends/ping.py

@@ -1,14 +1,14 @@
 import logging
 
 import satosa.logging_util as lu
-import satosa.micro_services.base
+from satosa.frontends.base import FrontendModule
 from satosa.response import Response
 
 
 logger = logging.getLogger(__name__)
 
 
-class PingFrontend(satosa.frontends.base.FrontendModule):
+class PingFrontend(FrontendModule):
     """
     SATOSA frontend that responds to a query with a simple
     200 OK, intended to be used as a simple heartbeat monitor.
@@ -19,20 +19,20 @@ def __init__(self, auth_req_callback_func, internal_attributes, config, base_url
 
         self.config = config
 
-    def handle_authn_response(self, context, internal_resp, extra_id_token_claims=None):
+    def handle_authn_response(self, context, internal_resp):
         """
         See super class method satosa.frontends.base.FrontendModule#handle_authn_response
         :type context: satosa.context.Context
         :type internal_response: satosa.internal.InternalData
-        :rtype oic.utils.http_util.Response
+        :rtype: satosa.response.Response
         """
         raise NotImplementedError()
 
     def handle_backend_error(self, exception):
         """
         See super class satosa.frontends.base.FrontendModule
         :type exception: satosa.exception.SATOSAError
-        :rtype: oic.utils.http_util.Response
+        :rtype: satosa.response.Response
         """
         raise NotImplementedError()
 
@@ -49,6 +49,8 @@ def register_endpoints(self, backend_names):
 
     def ping_endpoint(self, context):
         """
+        :type context: satosa.context.Context
+        :rtype: satosa.response.Response
         """
         msg = "Ping returning 200 OK"
         logline = lu.LOG_FMT.format(id=lu.get_session_id(context.state), message=msg)