view tests/lockdelay.py @ 44835:09da5cf44772

hooks: provide access to transaction changes for internal hooks

External hooks are skipped here as the environment often has a size
limit in the low MBs and that can easily be reached by larger
transactions.

Differential Revision: https://phab.mercurial-scm.org/D8490

# Dummy extension that adds a delay after acquiring a lock.
#
# This extension can be used to test race conditions between lock acquisition.

from __future__ import absolute_import

import os
import time


def reposetup(ui, repo):
    class delayedlockrepo(repo.__class__):
        def lock(self):
            delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            res = super(delayedlockrepo, self).lock()
            delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))
            if delay:
                time.sleep(delay)
            return res

    repo.__class__ = delayedlockrepo