From 534a766fdc24b29777d982b66a71e56c906e4e31 Mon Sep 17 00:00:00 2001
From: Simon Poirier <simpoir@gmail.com>
Date: Mon, 07 Dec 2009 20:30:53 +0000
Subject: fancy traceback for exceptions in addons loading.

---
diff --git a/tutorius/addon.py b/tutorius/addon.py
index 6e3d8b9..18d225a 100644
--- a/tutorius/addon.py
+++ b/tutorius/addon.py
@@ -35,6 +35,10 @@ __action__ = {
 import os
 import re
 import logging
+import sys
+import traceback
+
+LOGGER = logging.getLogger('sugar.tutorius.addon')
 
 PREFIX = __name__+"s"
 PATH = re.sub("addon\\.py[c]$", "", __file__)+"addons"
@@ -48,14 +52,23 @@ def _reload_addons():
     global _cache
     _cache = {}
     for addon in filter(lambda x: x.endswith("py"), os.listdir(PATH)):
-        mod = __import__(PREFIX+'.'+re.sub("\\.py$", "", addon), {}, {}, [""])
-        if hasattr(mod, "__action__"):
-            _cache[mod.__action__['name']] = mod.__action__
-            mod.__action__['type'] = TYPE_ACTION
-            continue
-        if hasattr(mod, "__event__"):
-            _cache[mod.__event__['name']] = mod.__event__
-            mod.__event__['type'] = TYPE_EVENT
+
+        try:
+            mod_name = PREFIX+'.'+re.sub("\\.py$", "", addon)
+            mod = __import__(mod_name, {}, {}, [""])
+            if hasattr(mod, "__action__"):
+                _cache[mod.__action__['name']] = mod.__action__
+                mod.__action__['type'] = TYPE_ACTION
+                continue
+            if hasattr(mod, "__event__"):
+                _cache[mod.__event__['name']] = mod.__event__
+                mod.__event__['type'] = TYPE_EVENT
+        except:
+            # fetch frame information to complement exception with traceback
+            type, value, tb = sys.exc_info()
+            formatted_tb = traceback.format_tb(tb)
+            LOGGER.error('Error loadin tutorius add-on [%s]:\n%s' % \
+                         (mod_name, '\n'.join(formatted_tb)))
 
 def create(name, *args, **kwargs):
     global _cache
--
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