Log error if registry has no rattail config

not clear if this is even possible, but if so i want to know about it

trying to figure out the occasional error email we get, latest being
from collectd/curl pinging the /login page, but request.has_perm()
call fails with missing attr?!

seems like either the rattail config is empty, or else the subscriber
events aren't firing (in the correct order) ?

tailbone/app.py

@@ -132,8 +132,7 @@ def make_pyramid_config(settings, configure_csrf=True):
         settings.setdefault('pyramid_deform.template_search_path', 'tailbone:templates/deform')
         config = Configurator(settings=settings, root_factory=Root)
 
-    # add rattail config directly to registry
-    # TODO: why on earth do we do this again?
+    # add rattail config directly to registry, for access throughout the app
     config.registry['rattail_config'] = rattail_config
 
     # configure user authorization / authentication

tailbone/subscribers.py

@@ -80,11 +80,14 @@ def new_request(event):
 
     * A shortcut method for permission checking, as ``has_perm()``.
     """
+    log.debug("new request: %s", event)
     request = event.request
     rattail_config = request.registry.settings.get('rattail_config')
     # TODO: why would this ever be null?
     if rattail_config:
         request.rattail_config = rattail_config
+    else:
+        log.error("registry has no rattail_config ?!")
 
     def user(request):
         user = None
@@ -158,6 +161,7 @@ def before_render(event):
     """
     Adds goodies to the global template renderer context.
     """
+    log.debug("before_render: %s", event)
 
     request = event.get('request') or threadlocal.get_current_request()
     rattail_config = request.rattail_config