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hooklib: fix detection of successors for changeset_obsoleted...
hooklib: fix detection of successors for changeset_obsoleted Provide a hook for obsutil.getobsolete to be used with either a transaction or the changes item of the transaction, since hooks only have access to the latter. Use that to find the correct list of revisions with obsmarkers, even new ones, and then filter out revisions with known successors. Move the processing from pretxnclose to txnclose as the transaction access itself is no longer necessary. This is more in line with notify and ensures that sanity checks can abort the transaction first. Differential Revision: https://phab.mercurial-scm.org/D8575

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pointer.py
89 lines | 2.8 KiB | text/x-python | PythonLexer
# pointer.py - Git-LFS pointer serialization
#
# Copyright 2017 Facebook, Inc.
#
# 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
import re
from mercurial.i18n import _
from mercurial import (
error,
pycompat,
)
from mercurial.utils import stringutil
class InvalidPointer(error.StorageError):
pass
class gitlfspointer(dict):
VERSION = b'https://git-lfs.github.com/spec/v1'
def __init__(self, *args, **kwargs):
self[b'version'] = self.VERSION
super(gitlfspointer, self).__init__(*args)
self.update(pycompat.byteskwargs(kwargs))
@classmethod
def deserialize(cls, text):
try:
return cls(l.split(b' ', 1) for l in text.splitlines()).validate()
except ValueError: # l.split returns 1 item instead of 2
raise InvalidPointer(
_(b'cannot parse git-lfs text: %s') % stringutil.pprint(text)
)
def serialize(self):
sortkeyfunc = lambda x: (x[0] != b'version', x)
items = sorted(pycompat.iteritems(self.validate()), key=sortkeyfunc)
return b''.join(b'%s %s\n' % (k, v) for k, v in items)
def oid(self):
return self[b'oid'].split(b':')[-1]
def size(self):
return int(self[b'size'])
# regular expressions used by _validate
# see https://github.com/git-lfs/git-lfs/blob/master/docs/spec.md
_keyre = re.compile(br'\A[a-z0-9.-]+\Z')
_valuere = re.compile(br'\A[^\n]*\Z')
_requiredre = {
b'size': re.compile(br'\A[0-9]+\Z'),
b'oid': re.compile(br'\Asha256:[0-9a-f]{64}\Z'),
b'version': re.compile(br'\A%s\Z' % stringutil.reescape(VERSION)),
}
def validate(self):
"""raise InvalidPointer on error. return self if there is no error"""
requiredcount = 0
for k, v in pycompat.iteritems(self):
if k in self._requiredre:
if not self._requiredre[k].match(v):
raise InvalidPointer(
_(b'unexpected lfs pointer value: %s=%s')
% (k, stringutil.pprint(v))
)
requiredcount += 1
elif not self._keyre.match(k):
raise InvalidPointer(_(b'unexpected lfs pointer key: %s') % k)
if not self._valuere.match(v):
raise InvalidPointer(
_(b'unexpected lfs pointer value: %s=%s')
% (k, stringutil.pprint(v))
)
if len(self._requiredre) != requiredcount:
miss = sorted(set(self._requiredre.keys()).difference(self.keys()))
raise InvalidPointer(
_(b'missing lfs pointer keys: %s') % b', '.join(miss)
)
return self
deserialize = gitlfspointer.deserialize