diff --git a/pylons_app/lib/hooks.py b/pylons_app/lib/hooks.py
new file mode 100644
--- /dev/null
+++ b/pylons_app/lib/hooks.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# custom hooks for application
+# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; version 2
+# of the License or (at your opinion) any later version of the license.
+# 
+# This program 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 General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA  02110-1301, USA.
+"""
+Created on Aug 6, 2010
+
+@author: marcink
+"""
+
+import sys
+import os
+from pylons_app.lib import helpers as h
+
+def repo_size(ui, repo, hooktype=None, **kwargs):
+
+    if hooktype != 'changegroup':
+        return False
+    
+    size_hg, size_root = 0, 0
+    for path, dirs, files in os.walk(repo.root):
+        if path.find('.hg') != -1:
+            for f in files:
+                size_hg += os.path.getsize(os.path.join(path, f))
+        else:
+            for f in files:
+                size_root += os.path.getsize(os.path.join(path, f))
+                
+    size_hg_f = h.format_byte_size(size_hg)
+    size_root_f = h.format_byte_size(size_root)
+    size_total_f = h.format_byte_size(size_root + size_hg)                            
+    sys.stdout.write('Repository size .hg:%s repo:%s total:%s\n' \
+                     % (size_hg_f, size_root_f, size_total_f))