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# lfs - hash-preserving large file support using Git-LFS protocol
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#
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# Copyright 2017 Facebook, Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""lfs - large file support (EXPERIMENTAL)
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Configs::
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[lfs]
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# Remote endpoint. Multiple protocols are supported:
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# - http(s)://user:pass@example.com/path
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# git-lfs endpoint
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# - file:///tmp/path
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# local filesystem, usually for testing
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# if unset, lfs will prompt setting this when it must use this value.
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# (default: unset)
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url = https://example.com/lfs
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# size of a file to make it use LFS
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threshold = 10M
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# how many times to retry before giving up on transferring an object
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retry = 5
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# the local directory to store lfs files for sharing across local clones.
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# If not set, the cache is located in an OS specific cache location.
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usercache = /path/to/global/cache
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"""
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from __future__ import absolute_import
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from mercurial.i18n import _
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from mercurial import (
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bundle2,
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changegroup,
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context,
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exchange,
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extensions,
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filelog,
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hg,
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localrepo,
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node,
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registrar,
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revlog,
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scmutil,
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upgrade,
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vfs as vfsmod,
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wireproto,
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)
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from . import (
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blobstore,
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wrapper,
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)
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# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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# be specifying the version(s) of Mercurial they are tested with, or
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# leave the attribute unspecified.
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testedwith = 'ships-with-hg-core'
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configtable = {}
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configitem = registrar.configitem(configtable)
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configitem('experimental', 'lfs.user-agent',
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default=None,
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)
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configitem('lfs', 'url',
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default=configitem.dynamicdefault,
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)
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configitem('lfs', 'usercache',
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default=None,
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)
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configitem('lfs', 'threshold',
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default=None,
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)
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configitem('lfs', 'retry',
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default=5,
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)
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# Deprecated
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configitem('lfs', 'remotestore',
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default=None,
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)
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# Deprecated
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configitem('lfs', 'dummy',
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default=None,
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)
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# Deprecated
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configitem('lfs', 'git-lfs',
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default=None,
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)
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cmdtable = {}
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command = registrar.command(cmdtable)
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templatekeyword = registrar.templatekeyword()
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def featuresetup(ui, supported):
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# don't die on seeing a repo with the lfs requirement
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supported |= {'lfs'}
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def uisetup(ui):
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localrepo.localrepository.featuresetupfuncs.add(featuresetup)
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def reposetup(ui, repo):
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# Nothing to do with a remote repo
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if not repo.local():
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return
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threshold = repo.ui.configbytes('lfs', 'threshold')
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repo.svfs.options['lfsthreshold'] = threshold
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repo.svfs.lfslocalblobstore = blobstore.local(repo)
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repo.svfs.lfsremoteblobstore = blobstore.remote(repo)
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# Push hook
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repo.prepushoutgoinghooks.add('lfs', wrapper.prepush)
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if 'lfs' not in repo.requirements:
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def checkrequireslfs(ui, repo, **kwargs):
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if 'lfs' not in repo.requirements:
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last = kwargs.get('node_last')
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_bin = node.bin
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if last:
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s = repo.set('%n:%n', _bin(kwargs['node']), _bin(last))
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else:
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s = repo.set('%n', _bin(kwargs['node']))
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for ctx in s:
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# TODO: is there a way to just walk the files in the commit?
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if any(ctx[f].islfs() for f in ctx.files() if f in ctx):
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repo.requirements.add('lfs')
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repo._writerequirements()
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break
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ui.setconfig('hooks', 'commit.lfs', checkrequireslfs, 'lfs')
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ui.setconfig('hooks', 'pretxnchangegroup.lfs', checkrequireslfs, 'lfs')
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def wrapfilelog(filelog):
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wrapfunction = extensions.wrapfunction
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wrapfunction(filelog, 'addrevision', wrapper.filelogaddrevision)
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wrapfunction(filelog, 'renamed', wrapper.filelogrenamed)
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wrapfunction(filelog, 'size', wrapper.filelogsize)
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def extsetup(ui):
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wrapfilelog(filelog.filelog)
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wrapfunction = extensions.wrapfunction
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wrapfunction(scmutil, 'wrapconvertsink', wrapper.convertsink)
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wrapfunction(upgrade, '_finishdatamigration',
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wrapper.upgradefinishdatamigration)
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wrapfunction(upgrade, 'preservedrequirements',
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wrapper.upgraderequirements)
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wrapfunction(upgrade, 'supporteddestrequirements',
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wrapper.upgraderequirements)
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wrapfunction(changegroup,
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'supportedoutgoingversions',
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wrapper.supportedoutgoingversions)
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wrapfunction(changegroup,
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'allsupportedversions',
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wrapper.allsupportedversions)
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wrapfunction(exchange, 'push', wrapper.push)
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wrapfunction(wireproto, '_capabilities', wrapper._capabilities)
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wrapfunction(context.basefilectx, 'cmp', wrapper.filectxcmp)
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wrapfunction(context.basefilectx, 'isbinary', wrapper.filectxisbinary)
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context.basefilectx.islfs = wrapper.filectxislfs
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revlog.addflagprocessor(
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revlog.REVIDX_EXTSTORED,
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(
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wrapper.readfromstore,
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wrapper.writetostore,
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wrapper.bypasscheckhash,
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),
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)
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wrapfunction(hg, 'clone', wrapper.hgclone)
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wrapfunction(hg, 'postshare', wrapper.hgpostshare)
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# Make bundle choose changegroup3 instead of changegroup2. This affects
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# "hg bundle" command. Note: it does not cover all bundle formats like
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# "packed1". Using "packed1" with lfs will likely cause trouble.
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names = [k for k, v in exchange._bundlespeccgversions.items() if v == '02']
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for k in names:
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exchange._bundlespeccgversions[k] = '03'
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# bundlerepo uses "vfsmod.readonlyvfs(othervfs)", we need to make sure lfs
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# options and blob stores are passed from othervfs to the new readonlyvfs.
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wrapfunction(vfsmod.readonlyvfs, '__init__', wrapper.vfsinit)
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# when writing a bundle via "hg bundle" command, upload related LFS blobs
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wrapfunction(bundle2, 'writenewbundle', wrapper.writenewbundle)
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@templatekeyword('lfs_files')
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def lfsfiles(repo, ctx, **args):
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"""List of strings. LFS files added or modified by the changeset."""
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pointers = wrapper.pointersfromctx(ctx) # {path: pointer}
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return sorted(pointers.keys())
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@command('debuglfsupload',
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[('r', 'rev', [], _('upload large files introduced by REV'))])
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def debuglfsupload(ui, repo, **opts):
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"""upload lfs blobs added by the working copy parent or given revisions"""
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revs = opts.get('rev', [])
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pointers = wrapper.extractpointers(repo, scmutil.revrange(repo, revs))
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wrapper.uploadblobs(repo, pointers)
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