#817: Upgrading past SVN 1081 breaks external modules' datababse connectivity.
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Reporter: [EMAIL PROTECTED] | Owner: anonymous
Type: defect | Status: new
Priority: high | Milestone:
Component: SQLObject | Version: 0.9a5
Severity: major | Keywords:
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There was some change around 1081 (as reported by Matthew Bevan in
[http://groups.google.com/group/turbogears/browse_thread/thread/8e6863219e25672/95f7823b1b88beb1
this post]) that now causes a class (in an external module configured
using TG's startup/shutdown notification entry point) inheriting from an
InheritableSQLObject to throw the following traceback:
{{{
Traceback (most recent call last):
File "/usr/bin/tg-admin", line 7, in ?
sys.exit(
File "/usr/lib/python2.4/site-packages/setuptools-0.6a11-
py2.4.egg/pkg_resources.py", line 236, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.4/site-packages/setuptools-0.6a11-
py2.4.egg/pkg_resources.py", line 2097, in load_entry_point
return ep.load()
File "/usr/lib/python2.4/site-packages/setuptools-0.6a11-
py2.4.egg/pkg_resources.py", line 1830, in load
entry = __import__(self.module_name, globals(),globals(),
['__name__'])
File "/home/mbevan/Projects/turbogears/turbogears/__init__.py", line
18, in ?
ext = entrypoint.load()
File "/usr/lib/python2.4/site-packages/setuptools-0.6a11-
py2.4.egg/pkg_resources.py", line 1830, in load
entry = __import__(self.module_name, globals(),globals(),
['__name__'])
File "/home/mbevan/Projects/TG-Content/content/__init__.py", line 23,
in ?
from content import controllers, model, widgets
File "/home/mbevan/Projects/TG-Content/content/model.py", line 16, in ?
class Bob(Test):
File
"/home/mbevan/Projects/turbogears/thirdparty/sqlobject/sqlobject/declarative.py",
line 108, in __new__
cls.__classinit__(cls, new_attrs)
File
"/home/mbevan/Projects/turbogears/thirdparty/sqlobject/sqlobject/main.py",
line 748, in __classinit__
if not connection and not getattr(cls, '_connection', None):
File "/home/mbevan/Projects/turbogears/turbogears/database.py", line
148, in __get__
self.set_hub()
File "/home/mbevan/Projects/turbogears/turbogears/database.py", line
166, in set_hub
raise KeyError, "No database configuration found!"
KeyError: 'No database configuration found!'
}}}
The above is thrown during TG initialization - applications no longer
start up, and the tg-admin tool can no longer run.
I have been able to reproduce this error with a very simple (~60 lines of
code including setup.py) set-up, and this error would even work as a
system-wide DOS attack against the current version of TG. This is a show-
stopping problem for the project Matthew and I are working on.
The simple case is attached. To reproduce:
1. Extract the contents of the attached file (`SimpleTest-1.0.0.tar.bz2`)
into a temporary directory.
1. Enter the `SimpleTest` directory.
1. Run `sudo ./setup.py develop` to install.
1. Attempt to run `tg-admin` or any TurboGears application.
- Alice !McGregor
--
Ticket URL: <http://trac.turbogears.org/turbogears/ticket/817>
TurboGears <http://www.turbogears.org/>
TurboGears front-to-back web development
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