node: replace nullid and friends with nodeconstants class
The introduction of 256bit hashes require changes to nullid and other
constant magic values. Start pushing them down from repository and
revlog where sensible.
Differential Revision: https://phab.mercurial-scm.org/D9465
# tiny extension to abort a transaction very late during test
#
# Copyright 2020 Pierre-Yves David <pierre-yves.david@octobus.net>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from mercurial import (
error,
transaction,
)
def abort(fp):
raise error.Abort(b"This is a late abort")
def reposetup(ui, repo):
transaction.postfinalizegenerators.add(b'late-abort')
class LateAbortRepo(repo.__class__):
def transaction(self, *args, **kwargs):
tr = super(LateAbortRepo, self).transaction(*args, **kwargs)
tr.addfilegenerator(
b'late-abort', [b'late-abort'], abort, order=9999999
)
return tr
repo.__class__ = LateAbortRepo