Log warning for invalid section/option settings

[hooke.git] / hooke / engine.py

diff --git a/hooke/engine.py b/hooke/engine.py
index c70ee6b444ceb2d948bd46fb864528cc4c95af45..ca4461d9bc6800de936b6f740d667ca02c7c969a 100644 (file)
--- a/hooke/engine.py
+++ b/hooke/engine.py
@@ -1,9 +1,30 @@
+# Copyright (C) 2010 W. Trevor King <wking@drexel.edu>
+#
+# This file is part of Hooke.
+#
+# Hooke is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# Hooke is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
+# Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with Hooke.  If not, see
+# <http://www.gnu.org/licenses/>.
+
 """The `engine` module provides :class:`CommandEngine` for executing
 :class:`hooke.command.Command`\s.
 """
 
+import logging
+
 from .ui import CloseEngine, CommandMessage
 
+
 class CommandEngine (object):
     def run(self, hooke, ui_to_command_queue, command_to_ui_queue):
         """Get a :class:`hooke.ui.QueueMessage` from the incoming
@@ -19,10 +40,16 @@ class CommandEngine (object):
         `command_to_ui_queue`, at which point the `CommandEngine` will
         be ready to receive the next :class:`hooke.ui.QueueMessage`.
         """
+        log = logging.getLogger('hooke')
         while True:
+            log.debug('engine waiting for command')
             msg = ui_to_command_queue.get()
             if isinstance(msg, CloseEngine):
+                command_to_ui_queue.put(hooke)
+                log.debug(
+                    'engine closing, placed hooke instance in return queue')
                 break
             assert isinstance(msg, CommandMessage), type(msg)
+            log.debug('engine running %s' % msg.command.name)
             msg.command.run(hooke, ui_to_command_queue, command_to_ui_queue,
                             **msg.arguments)