view tests/lockdelay.py @ 39454:c68cfc55af9d stable

buildrpm: fix embarassing bug in shell variable expansions

`$distance_$node` looks up and concatenates `$distance_` and
`$node`. `$distance_` is empty, so we were getting the node without
the distance. Using the curly braces makes our intent explicit and
produces better-versioned RPMS.

Differential Revision: https://phab.mercurial-scm.org/D4493

# 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