vcs-connection: report problems more explicitly if connections are not established and we want to use it

rhodecode/lib/vcs/connection.py

@@ -23,15 +23,23 @@ Holds connection for remote server.
 """
 
 
-def _not_initialized(*args, **kwargs):
+class NotInitializedConnection(object):
     """Placeholder for objects which have to be initialized first."""
-    raise Exception(
-        "rhodecode.lib.vcs is not yet initialized. "
-        "Make sure `vcs.server` is enabled in your configuration.")
+
+    def _raise_exc(self):
+        raise Exception(
+            "rhodecode.lib.vcs is not yet initialized. "
+            "Make sure `vcs.server` is enabled in your configuration.")
+
+    def __getattr__(self, item):
+        self._raise_exc()
+
+    def __call__(self, *args, **kwargs):
+        self._raise_exc()
 
 # TODO: figure out a nice default value for these things
-Service = _not_initialized
+Service = NotInitializedConnection()
 
-Git = _not_initialized
-Hg = _not_initialized
-Svn = _not_initialized
+Git = NotInitializedConnection()
+Hg = NotInitializedConnection()
+Svn = NotInitializedConnection()