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Mads Kiilerich
celerypylons: wrap celery import so we always get the right environment variables set and check configuration

Get rid of magic ... or at least document and encapsulate it.

Before, celerypylons would set the environment variables that made it possible
to import Celery after Pylons had been configured.

Now, the module will import Celery ... and verify that Pylons has been
configured.

(A next stop could be to move things around so this got tied closely to
initializing Pylons. Or something.)
.. _locking:

==================
Repository locking
==================

Kallithea has a *repository locking* feature, disabled by default. When
enabled, every initial clone and every pull gives users (with write permission)
the exclusive right to do a push.

When repository locking is enabled, repositories get a ``locked`` flag.
The hg/git commands ``hg/git clone``, ``hg/git pull``,
and ``hg/git push`` influence this state:

- A ``clone`` or ``pull`` action locks the target repository
  if the user has write/admin permissions on this repository.

- Kallithea will remember the user who locked the repository so only this
  specific user can unlock the repo by performing a ``push``
  command.

- Every other command on a locked repository from this user and every command
  from any other user will result in an HTTP return code 423 (Locked).
  Additionally, the HTTP error will mention the user that locked the repository
  (e.g., “repository <repo> locked by user <user>”).

Each repository can be manually unlocked by an administrator from the
repository settings menu.