Mercurial > hg
view hgext/lfs/__init__.py @ 35504:6bb940de4c4c
lfs: add the 'lfs' requirement in the changegroup transaction introducing lfs
A hook like this is how largefiles manages to do the same. Largefiles uses a
changegroup hook, but this uses pretxnchangegroup because that actually causes
the transaction to rollback in the unlikely event that writing the requirements
out fails. Sadly, the requires file itself isn't rolled back if a subsequent
hook fails, but that seems trivial.
Now that commit, changegroup and convert are covered, I don't think there's any
way to get an lfs repo without the requirement.
The grep exit code is blotted out of some test-lfs-serve.t tests now showing the
requirement, because run-tests.py doesn't support conditionalizing the exit
code.
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Sat, 23 Dec 2017 23:51:40 -0500 |
parents | 488634db5928 |
children | fa865878a849 |
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# lfs - hash-preserving large file support using Git-LFS protocol # # 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. """lfs - large file support (EXPERIMENTAL) Configs:: [lfs] # Remote endpoint. Multiple protocols are supported: # - http(s)://user:pass@example.com/path # git-lfs endpoint # - file:///tmp/path # local filesystem, usually for testing # if unset, lfs will prompt setting this when it must use this value. # (default: unset) url = https://example.com/lfs # size of a file to make it use LFS threshold = 10M # how many times to retry before giving up on transferring an object retry = 5 # the local directory to store lfs files for sharing across local clones. # If not set, the cache is located in an OS specific cache location. usercache = /path/to/global/cache """ from __future__ import absolute_import from mercurial.i18n import _ from mercurial import ( bundle2, changegroup, context, exchange, extensions, filelog, hg, localrepo, node, registrar, revlog, scmutil, upgrade, vfs as vfsmod, ) from . import ( blobstore, wrapper, ) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should # be specifying the version(s) of Mercurial they are tested with, or # leave the attribute unspecified. testedwith = 'ships-with-hg-core' configtable = {} configitem = registrar.configitem(configtable) configitem('experimental', 'lfs.user-agent', default=None, ) configitem('lfs', 'url', default=configitem.dynamicdefault, ) configitem('lfs', 'usercache', default=None, ) configitem('lfs', 'threshold', default=None, ) configitem('lfs', 'retry', default=5, ) # Deprecated configitem('lfs', 'remotestore', default=None, ) # Deprecated configitem('lfs', 'dummy', default=None, ) # Deprecated configitem('lfs', 'git-lfs', default=None, ) cmdtable = {} command = registrar.command(cmdtable) templatekeyword = registrar.templatekeyword() def featuresetup(ui, supported): # don't die on seeing a repo with the lfs requirement supported |= {'lfs'} def uisetup(ui): localrepo.localrepository.featuresetupfuncs.add(featuresetup) def reposetup(ui, repo): # Nothing to do with a remote repo if not repo.local(): return threshold = repo.ui.configbytes('lfs', 'threshold') repo.svfs.options['lfsthreshold'] = threshold repo.svfs.lfslocalblobstore = blobstore.local(repo) repo.svfs.lfsremoteblobstore = blobstore.remote(repo) # Push hook repo.prepushoutgoinghooks.add('lfs', wrapper.prepush) if 'lfs' not in repo.requirements: def checkrequireslfs(ui, repo, **kwargs): if 'lfs' not in repo.requirements: last = kwargs.get('node_last') _bin = node.bin if last: s = repo.set('%n:%n', _bin(kwargs['node']), _bin(last)) else: s = repo.set('%n', _bin(kwargs['node'])) for ctx in s: # TODO: is there a way to just walk the files in the commit? if any(ctx[f].islfs() for f in ctx.files() if f in ctx): repo.requirements.add('lfs') repo._writerequirements() break ui.setconfig('hooks', 'commit.lfs', checkrequireslfs, 'lfs') ui.setconfig('hooks', 'pretxnchangegroup.lfs', checkrequireslfs, 'lfs') def wrapfilelog(filelog): wrapfunction = extensions.wrapfunction wrapfunction(filelog, 'addrevision', wrapper.filelogaddrevision) wrapfunction(filelog, 'renamed', wrapper.filelogrenamed) wrapfunction(filelog, 'size', wrapper.filelogsize) def extsetup(ui): wrapfilelog(filelog.filelog) wrapfunction = extensions.wrapfunction wrapfunction(scmutil, 'wrapconvertsink', wrapper.convertsink) wrapfunction(upgrade, '_finishdatamigration', wrapper.upgradefinishdatamigration) wrapfunction(upgrade, 'preservedrequirements', wrapper.upgraderequirements) wrapfunction(upgrade, 'supporteddestrequirements', wrapper.upgraderequirements) wrapfunction(changegroup, 'supportedoutgoingversions', wrapper.supportedoutgoingversions) wrapfunction(changegroup, 'allsupportedversions', wrapper.allsupportedversions) wrapfunction(context.basefilectx, 'cmp', wrapper.filectxcmp) wrapfunction(context.basefilectx, 'isbinary', wrapper.filectxisbinary) context.basefilectx.islfs = wrapper.filectxislfs revlog.addflagprocessor( revlog.REVIDX_EXTSTORED, ( wrapper.readfromstore, wrapper.writetostore, wrapper.bypasscheckhash, ), ) wrapfunction(hg, 'clone', wrapper.hgclone) wrapfunction(hg, 'postshare', wrapper.hgpostshare) # Make bundle choose changegroup3 instead of changegroup2. This affects # "hg bundle" command. Note: it does not cover all bundle formats like # "packed1". Using "packed1" with lfs will likely cause trouble. names = [k for k, v in exchange._bundlespeccgversions.items() if v == '02'] for k in names: exchange._bundlespeccgversions[k] = '03' # bundlerepo uses "vfsmod.readonlyvfs(othervfs)", we need to make sure lfs # options and blob stores are passed from othervfs to the new readonlyvfs. wrapfunction(vfsmod.readonlyvfs, '__init__', wrapper.vfsinit) # when writing a bundle via "hg bundle" command, upload related LFS blobs wrapfunction(bundle2, 'writenewbundle', wrapper.writenewbundle) @templatekeyword('lfs_files') def lfsfiles(repo, ctx, **args): """List of strings. LFS files added or modified by the changeset.""" pointers = wrapper.pointersfromctx(ctx) # {path: pointer} return sorted(pointers.keys()) @command('debuglfsupload', [('r', 'rev', [], _('upload large files introduced by REV'))]) def debuglfsupload(ui, repo, **opts): """upload lfs blobs added by the working copy parent or given revisions""" revs = opts.get('rev', []) pointers = wrapper.extractpointers(repo, scmutil.revrange(repo, revs)) wrapper.uploadblobs(repo, pointers)