Mercurial > hg
view mercurial/cacheutil.py @ 39778:a6b3c4c1019f
revlog: move censor logic out of censor extension
The censor extension is doing very low-level things with revlogs.
It is fundamentally impossible for this logic to remain in the censor
extension while support multiple storage backends: we need each
storage backend to implement censor in its own storage-specific
way.
This commit effectively moves the revlog-specific censoring code to
be a method of revlogs themselves.
We've defined a new API on the file storage interface for censoring
an individual node. Even though the current censoring code doesn't
use it, the API requires a transaction instance because it logically
makes sense for storage backends to require an active transaction
(which implies a held write lock) in order to rewrite storage.
After this commit, the censor extension has been reduced to
boilerplate precondition checking before invoking the generic
storage API.
I tried to keep the code as similar as possible. But some minor
changes were made:
* We use self._io instead of instantiating a new revlogio instance.
* We compare self.version against REVLOGV0 instead of != REVLOGV1
because presumably all future revlog versions will support censoring.
* We use self.opener instead of going through repo.svfs (we don't have
a handle on the repo instance from a revlog).
* "revlog" dropped
* Replace "flog" with "self".
Differential Revision: https://phab.mercurial-scm.org/D4656
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 18 Sep 2018 17:51:43 -0700 |
parents | 72fdd99eb526 |
children | 57875cf423c9 |
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# scmutil.py - Mercurial core utility functions # # Copyright Matt Mackall <mpm@selenic.com> and other # # 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 . import repoview def cachetocopy(srcrepo): """return the list of cache file valuable to copy during a clone""" # In local clones we're copying all nodes, not just served # ones. Therefore copy all branch caches over. cachefiles = ['branch2'] cachefiles += ['branch2-%s' % f for f in repoview.filtertable] cachefiles += ['rbc-names-v1', 'rbc-revs-v1'] cachefiles += ['tags2'] cachefiles += ['tags2-%s' % f for f in repoview.filtertable] cachefiles += ['hgtagsfnodes1'] return cachefiles