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Thomas De Schampheleire

utils: move repo_name_slug to utils2 to prevent import cycle on setup_db

After commit 57a733313e4f, 'gearbox setup-db -c my.ini' fails with an import
cycle as follows:

Traceback (most recent call last):
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/bin/gearbox", line 11, in <module>
sys.exit(main())
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/lib/python2.7/site-packages/gearbox/main.py", line 199, in main
return gearbox.run(args)
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/lib/python2.7/site-packages/gearbox/main.py", line 145, in run
return self._run_subcommand(remainder)
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/lib/python2.7/site-packages/gearbox/main.py", line 149, in _run_subcommand
subcommand = self.command_manager.find_command(argv)
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/lib/python2.7/site-packages/gearbox/commandmanager.py", line 78, in find_command
cmd_factory = cmd_ep.resolve()
File "/home/tdescham/repo/contrib/kallithea/venv/kallithea-release/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2324, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/home/tdescham/repo/contrib/kallithea/kallithea-release/kallithea/lib/paster_commands/setup_db.py", line 27, in <module>
from kallithea.lib.db_manage import DbManage
File "/home/tdescham/repo/contrib/kallithea/kallithea-release/kallithea/lib/db_manage.py", line 47, in <module>
from kallithea.model.repo_group import RepoGroupModel
File "/home/tdescham/repo/contrib/kallithea/kallithea-release/kallithea/model/repo_group.py", line 35, in <module>
import kallithea.lib.utils
File "/home/tdescham/repo/contrib/kallithea/kallithea-release/kallithea/lib/utils.py", line 48, in <module>
from kallithea.model.repo_group import RepoGroupModel
ImportError: cannot import name RepoGroupModel

i.e. kallithea.model.repo_group wants to import kallithea.lib.utils which
in turn wants to import kallithea.model.repo_group.

In fact there exists kallithea.lib.utils and kallithea.lib.utils2.
The current split is that 'utils2' contains 'simple' utilities, none of which
depend on kallithea models, controllers, ... In contrast, 'utils' does rely
on such kallithea classes.

As kallithea.model.repo_group was only include kallithea.lib.utils for its
repo_name_slug method, which has no dependency on other kallithea classes,
move that method (and its dependent recursive_replace) to
kallithea.lib.utils2 instead. This fixes the import cycle.

.. _troubleshooting:

===============
Troubleshooting
===============

:Q: **Missing static files?**
:A: Make sure either to set the ``static_files = true`` in the .ini file or
   double check the root path for your http setup. It should point to
   for example:
   ``/home/my-virtual-python/lib/python2.7/site-packages/kallithea/public``

|

:Q: **Can't install celery/rabbitmq?**
:A: Don't worry. Kallithea works without them, too. No extra setup is required.
    Try out the great Celery docs for further help.

|

:Q: **Long lasting push timeouts?**
:A: Make sure you set a longer timeout in your proxy/fcgi settings. Timeouts
    are caused by the http server and not Kallithea.

|

:Q: **Large pushes timeouts?**
:A: Make sure you set a proper ``max_body_size`` for the http server. Very often
    Apache, Nginx, or other http servers kill the connection due to to large
    body.

|

:Q: **Apache doesn't pass basicAuth on pull/push?**
:A: Make sure you added ``WSGIPassAuthorization true``.

|

:Q: **Git fails on push/pull?**
:A: Make sure you're using a WSGI http server that can handle chunked encoding
    such as ``waitress`` or ``gunicorn``.

|

:Q: **How can I use hooks in Kallithea?**
:A: It's easy if they are Python hooks: just use advanced link in
    hooks section in Admin panel, that works only for Mercurial. If
    you want to use Git hooks, just install th proper one in the repository,
    e.g., create a file `/gitrepo/hooks/pre-receive`. You can also use
    Kallithea-extensions to connect to callback hooks, for both Git
    and Mercurial.

|

:Q: **Kallithea is slow for me, how can I make it faster?**
:A: See the :ref:`performance` section.

|

:Q: **UnicodeDecodeError on Apache mod_wsgi**
:A: Please read: https://docs.djangoproject.com/en/dev/howto/deployment/wsgi/modwsgi/#if-you-get-a-unicodeencodeerror.

|

:Q: **Requests hanging on Windows**
:A: Please try out with disabled Antivirus software, there are some known problems with Eset Antivirus. Make sure
    you have installed the latest Windows patches (especially KB2789397).


.. _virtualenv: http://pypi.python.org/pypi/virtualenv
.. _python: http://www.python.org/
.. _mercurial: https://www.mercurial-scm.org/
.. _celery: http://celeryproject.org/
.. _rabbitmq: http://www.rabbitmq.com/
.. _python-ldap: http://www.python-ldap.org/