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context: introduce p[12]copies() methods and debugp[12]copies commands...
context: introduce p[12]copies() methods and debugp[12]copies commands As mentioned earlier, I'm working on support for storing copy metadata in the changeset instead of in the filelog. In order to transition a repo from storing metadata in filelogs to storing it in the changeset, I'm going to provide a config option for reading the metadata from the changeset, but falling back to getting it from the filelog if it's not in the changeset. In this compatiblity mode, the changeset-optmized algorithms will be used. We will then need to convert the filelog copy metadata to look like that provided by changeset copy metadata. This patch introduces methods that do just that. By having these methods here, we can start writing changeset-optimized algorithms that should work already before we add any support for storing the metadata in the changesets. This commit also includes new debugp[12]copies commands and exercises them in test-copies.t. Differential Revision: https://phab.mercurial-scm.org/D5990

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localstore.py
68 lines | 2.4 KiB | text/x-python | PythonLexer
# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''store class for local filesystem'''
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import util
from . import (
basestore,
lfutil,
)
class localstore(basestore.basestore):
'''localstore first attempts to grab files out of the store in the remote
Mercurial repository. Failing that, it attempts to grab the files from
the user cache.'''
def __init__(self, ui, repo, remote):
self.remote = remote.local()
super(localstore, self).__init__(ui, repo, self.remote.url())
def put(self, source, hash):
if lfutil.instore(self.remote, hash):
return
lfutil.link(source, lfutil.storepath(self.remote, hash))
def exists(self, hashes):
retval = {}
for hash in hashes:
retval[hash] = lfutil.instore(self.remote, hash)
return retval
def _getfile(self, tmpfile, filename, hash):
path = lfutil.findfile(self.remote, hash)
if not path:
raise basestore.StoreError(filename, hash, self.url,
_("can't get file locally"))
with open(path, 'rb') as fd:
return lfutil.copyandhash(
util.filechunkiter(fd), tmpfile)
def _verifyfiles(self, contents, filestocheck):
failed = False
for cset, filename, expectedhash in filestocheck:
storepath, exists = lfutil.findstorepath(self.repo, expectedhash)
if not exists:
storepath, exists = lfutil.findstorepath(
self.remote, expectedhash)
if not exists:
self.ui.warn(
_('changeset %s: %s references missing %s\n')
% (cset, filename, storepath))
failed = True
elif contents:
actualhash = lfutil.hashfile(storepath)
if actualhash != expectedhash:
self.ui.warn(
_('changeset %s: %s references corrupted %s\n')
% (cset, filename, storepath))
failed = True
return failed