lfs: prefetch lfs blobs when applying merge updates

In addition to merge, this method ultimately gets called by many commands:

  - backout
  - bisect
  - clone
  - fetch
  - graft
  - import (without --bypass)
  - pull -u
  - rebase
  - strip
  - share
  - transplant
  - unbundle
  - update

Additionally, it's also called by histedit, shelve, unshelve, and split, but it
seems that the related blobs should always be available locally for these.

For `hg update`, it happens after the normal argument checking and pre-update
hook processing, and remote corruption is detected prior to manipulating the
working directory.  Other commands could use this treatment (archive, cat,
revert, etc), but this covers so many of the frequently used bulk commands, it
seems like a good starting point.

Losing the verbose message that prints the file name before a corrupt blob
aborts the command is a little sad, because there's no easy way to go from oid
to file name.  I'd like to change that message to list the file name so it looks
cleaner and less cryptic, but the pointer object is nowhere near where it needs
to be to do this.  So punt on that for now.

hgext/lfs/__init__.py

@@ -1,378 +1,381 b''
 # 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)
 
 This extension allows large files to be tracked outside of the normal
 repository storage and stored on a centralized server, similar to the
 ``largefiles`` extension.  The ``git-lfs`` protocol is used when
 communicating with the server, so existing git infrastructure can be
 harnessed.  Even though the files are stored outside of the repository,
 they are still integrity checked in the same manner as normal files.
 
 The files stored outside of the repository are downloaded on demand,
 which reduces the time to clone, and possibly the local disk usage.
 This changes fundamental workflows in a DVCS, so careful thought
 should be given before deploying it.  :hg:`convert` can be used to
 convert LFS repositories to normal repositories that no longer
 require this extension, and do so without changing the commit hashes.
 This allows the extension to be disabled if the centralized workflow
 becomes burdensome.  However, the pre and post convert clones will
 not be able to communicate with each other unless the extension is
 enabled on both.
 
 To start a new repository, or to add LFS files to an existing one, just
 create an ``.hglfs`` file as described below in the root directory of
 the repository.  Typically, this file should be put under version
 control, so that the settings will propagate to other repositories with
 push and pull.  During any commit, Mercurial will consult this file to
 determine if an added or modified file should be stored externally.  The
 type of storage depends on the characteristics of the file at each
 commit.  A file that is near a size threshold may switch back and forth
 between LFS and normal storage, as needed.
 
 Alternately, both normal repositories and largefile controlled
 repositories can be converted to LFS by using :hg:`convert` and the
 ``lfs.track`` config option described below.  The ``.hglfs`` file
 should then be created and added, to control subsequent LFS selection.
 The hashes are also unchanged in this case.  The LFS and non-LFS
 repositories can be distinguished because the LFS repository will
 abort any command if this extension is disabled.
 
 Committed LFS files are held locally, until the repository is pushed.
 Prior to pushing the normal repository data, the LFS files that are
 tracked by the outgoing commits are automatically uploaded to the
 configured central server.  No LFS files are transferred on
 :hg:`pull` or :hg:`clone`.  Instead, the files are downloaded on
 demand as they need to be read, if a cached copy cannot be found
 locally.  Both committing and downloading an LFS file will link the
 file to a usercache, to speed up future access.  See the `usercache`
 config setting described below.
 
 .hglfs::
 
     The extension reads its configuration from a versioned ``.hglfs``
     configuration file found in the root of the working directory. The
     ``.hglfs`` file uses the same syntax as all other Mercurial
     configuration files. It uses a single section, ``[track]``.
 
     The ``[track]`` section specifies which files are stored as LFS (or
     not). Each line is keyed by a file pattern, with a predicate value.
     The first file pattern match is used, so put more specific patterns
     first.  The available predicates are ``all()``, ``none()``, and
     ``size()``. See "hg help filesets.size" for the latter.
 
     Example versioned ``.hglfs`` file::
 
       [track]
       # No Makefile or python file, anywhere, will be LFS
       **Makefile = none()
       **.py = none()
 
       **.zip = all()
       **.exe = size(">1MB")
 
       # Catchall for everything not matched above
       ** = size(">10MB")
 
 Configs::
 
     [lfs]
     # Remote endpoint. Multiple protocols are supported:
     # - http(s)://user:[e-mail]/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/repo.git/info/lfs
 
     # Which files to track in LFS.  Path tests are "**.extname" for file
     # extensions, and "path:under/some/directory" for path prefix.  Both
     # are relative to the repository root.
     # File size can be tested with the "size()" fileset, and tests can be
     # joined with fileset operators.  (See "hg help filesets.operators".)
     #
     # Some examples:
     # - all()                       # everything
     # - none()                      # nothing
     # - size(">20MB")               # larger than 20MB
     # - !**.txt                     # anything not a *.txt file
     # - **.zip | **.tar.gz | **.7z  # some types of compressed files
     # - path:bin                    # files under "bin" in the project root
     # - (**.php & size(">2MB")) | (**.js & size(">5MB")) | **.tar.gz
     #     | (path:bin & !path:/bin/README) | size(">1GB")
     # (default: none())
     #
     # This is ignored if there is a tracked '.hglfs' file, and this setting
     # will eventually be deprecated and removed.
     track = size(">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,
     cmdutil,
     config,
     context,
     error,
     exchange,
     extensions,
     filelog,
     fileset,
     hg,
     localrepo,
+    merge,
     minifileset,
     node,
     pycompat,
     registrar,
     revlog,
     scmutil,
     templatekw,
     upgrade,
     util,
     vfs as vfsmod,
     wireproto,
 )
 
 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('experimental', 'lfs.worker-enable',
     default=False,
 )
 
 configitem('lfs', 'url',
     default=None,
 )
 configitem('lfs', 'usercache',
     default=None,
 )
 # Deprecated
 configitem('lfs', 'threshold',
     default=None,
 )
 configitem('lfs', 'track',
     default='none()',
 )
 configitem('lfs', 'retry',
     default=5,
 )
 
 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
 
     repo.svfs.lfslocalblobstore = blobstore.local(repo)
     repo.svfs.lfsremoteblobstore = blobstore.remote(repo)
 
     class lfsrepo(repo.__class__):
         @localrepo.unfilteredmethod
         def commitctx(self, ctx, error=False):
             repo.svfs.options['lfstrack'] = _trackedmatcher(self)
             return super(lfsrepo, self).commitctx(ctx, error)
 
     repo.__class__ = lfsrepo
 
     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()
                     repo.prepushoutgoinghooks.add('lfs', wrapper.prepush)
                     break
 
         ui.setconfig('hooks', 'commit.lfs', checkrequireslfs, 'lfs')
         ui.setconfig('hooks', 'pretxnchangegroup.lfs', checkrequireslfs, 'lfs')
     else:
         repo.prepushoutgoinghooks.add('lfs', wrapper.prepush)
 
 def _trackedmatcher(repo):
     """Return a function (path, size) -> bool indicating whether or not to
     track a given file with lfs."""
     if not repo.wvfs.exists('.hglfs'):
         # No '.hglfs' in wdir.  Fallback to config for now.
         trackspec = repo.ui.config('lfs', 'track')
 
         # deprecated config: lfs.threshold
         threshold = repo.ui.configbytes('lfs', 'threshold')
         if threshold:
             fileset.parse(trackspec)  # make sure syntax errors are confined
             trackspec = "(%s) | size('>%d')" % (trackspec, threshold)
 
         return minifileset.compile(trackspec)
 
     data = repo.wvfs.tryread('.hglfs')
     if not data:
         return lambda p, s: False
 
     # Parse errors here will abort with a message that points to the .hglfs file
     # and line number.
     cfg = config.config()
     cfg.parse('.hglfs', data)
 
     try:
         rules = [(minifileset.compile(pattern), minifileset.compile(rule))
                  for pattern, rule in cfg.items('track')]
     except error.ParseError as e:
         # The original exception gives no indicator that the error is in the
         # .hglfs file, so add that.
 
         # TODO: See if the line number of the file can be made available.
         raise error.Abort(_('parse error in .hglfs: %s') % e)
 
     def _match(path, size):
         for pat, rule in rules:
             if pat(path, size):
                 return rule(path, size)
 
         return False
 
     return _match
 
 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(cmdutil, '_updatecatformatter', wrapper._updatecatformatter)
     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(exchange, 'push', wrapper.push)
     wrapfunction(wireproto, '_capabilities', wrapper._capabilities)
 
     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)
 
+    wrapfunction(merge, 'applyupdates', wrapper.mergemodapplyupdates)
+
     # 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."""
     args = pycompat.byteskwargs(args)
 
     pointers = wrapper.pointersfromctx(ctx) # {path: pointer}
     files = sorted(pointers.keys())
 
     def pointer(v):
         # In the file spec, version is first and the other keys are sorted.
         sortkeyfunc = lambda x: (x[0] != 'version', x)
         items = sorted(pointers[v].iteritems(), key=sortkeyfunc)
         return util.sortdict(items)
 
     makemap = lambda v: {
         'file': v,
         'lfsoid': pointers[v].oid(),
         'lfspointer': templatekw.hybriddict(pointer(v)),
     }
 
     # TODO: make the separator ', '?
     f = templatekw._showlist('lfs_file', files, args)
     return templatekw._hybrid(f, files, makemap, pycompat.identity)
 
 @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)

hgext/lfs/wrapper.py

@@ -1,356 +1,392 b''
 # wrapper.py - methods wrapping core mercurial logic
 #
 # 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 hashlib
 
 from mercurial.i18n import _
 from mercurial.node import bin, nullid, short
 
 from mercurial import (
     error,
     filelog,
     revlog,
     util,
 )
 
 from ..largefiles import lfutil
 
 from . import (
     blobstore,
     pointer,
 )
 
 def supportedoutgoingversions(orig, repo):
     versions = orig(repo)
     if 'lfs' in repo.requirements:
         versions.discard('01')
         versions.discard('02')
     versions.add('03')
     return versions
 
 def allsupportedversions(orig, ui):
     versions = orig(ui)
     versions.add('03')
     return versions
 
 def _capabilities(orig, repo, proto):
     '''Wrap server command to announce lfs server capability'''
     caps = orig(repo, proto)
     # XXX: change to 'lfs=serve' when separate git server isn't required?
     caps.append('lfs')
     return caps
 
 def bypasscheckhash(self, text):
     return False
 
 def readfromstore(self, text):
     """Read filelog content from local blobstore transform for flagprocessor.
 
     Default tranform for flagprocessor, returning contents from blobstore.
     Returns a 2-typle (text, validatehash) where validatehash is True as the
     contents of the blobstore should be checked using checkhash.
     """
     p = pointer.deserialize(text)
     oid = p.oid()
     store = self.opener.lfslocalblobstore
     if not store.has(oid):
         p.filename = self.filename
         self.opener.lfsremoteblobstore.readbatch([p], store)
 
     # The caller will validate the content
     text = store.read(oid, verify=False)
 
     # pack hg filelog metadata
     hgmeta = {}
     for k in p.keys():
         if k.startswith('x-hg-'):
             name = k[len('x-hg-'):]
             hgmeta[name] = p[k]
     if hgmeta or text.startswith('\1\n'):
         text = filelog.packmeta(hgmeta, text)
 
     return (text, True)
 
 def writetostore(self, text):
     # hg filelog metadata (includes rename, etc)
     hgmeta, offset = filelog.parsemeta(text)
     if offset and offset > 0:
         # lfs blob does not contain hg filelog metadata
         text = text[offset:]
 
     # git-lfs only supports sha256
     oid = hashlib.sha256(text).hexdigest()
     self.opener.lfslocalblobstore.write(oid, text)
 
     # replace contents with metadata
     longoid = 'sha256:%s' % oid
     metadata = pointer.gitlfspointer(oid=longoid, size=str(len(text)))
 
     # by default, we expect the content to be binary. however, LFS could also
     # be used for non-binary content. add a special entry for non-binary data.
     # this will be used by filectx.isbinary().
     if not util.binary(text):
         # not hg filelog metadata (affecting commit hash), no "x-hg-" prefix
         metadata['x-is-binary'] = '0'
 
     # translate hg filelog metadata to lfs metadata with "x-hg-" prefix
     if hgmeta is not None:
         for k, v in hgmeta.iteritems():
             metadata['x-hg-%s' % k] = v
 
     rawtext = metadata.serialize()
     return (rawtext, False)
 
 def _islfs(rlog, node=None, rev=None):
     if rev is None:
         if node is None:
             # both None - likely working copy content where node is not ready
             return False
         rev = rlog.rev(node)
     else:
         node = rlog.node(rev)
     if node == nullid:
         return False
     flags = rlog.flags(rev)
     return bool(flags & revlog.REVIDX_EXTSTORED)
 
 def filelogaddrevision(orig, self, text, transaction, link, p1, p2,
                        cachedelta=None, node=None,
                        flags=revlog.REVIDX_DEFAULT_FLAGS, **kwds):
     textlen = len(text)
     # exclude hg rename meta from file size
     meta, offset = filelog.parsemeta(text)
     if offset:
         textlen -= offset
 
     lfstrack = self.opener.options['lfstrack']
 
     if lfstrack(self.filename, textlen):
         flags |= revlog.REVIDX_EXTSTORED
 
     return orig(self, text, transaction, link, p1, p2, cachedelta=cachedelta,
                 node=node, flags=flags, **kwds)
 
 def filelogrenamed(orig, self, node):
     if _islfs(self, node):
         rawtext = self.revision(node, raw=True)
         if not rawtext:
             return False
         metadata = pointer.deserialize(rawtext)
         if 'x-hg-copy' in metadata and 'x-hg-copyrev' in metadata:
             return metadata['x-hg-copy'], bin(metadata['x-hg-copyrev'])
         else:
             return False
     return orig(self, node)
 
 def filelogsize(orig, self, rev):
     if _islfs(self, rev=rev):
         # fast path: use lfs metadata to answer size
         rawtext = self.revision(rev, raw=True)
         metadata = pointer.deserialize(rawtext)
         return int(metadata['size'])
     return orig(self, rev)
 
 def filectxcmp(orig, self, fctx):
     """returns True if text is different than fctx"""
     # some fctx (ex. hg-git) is not based on basefilectx and do not have islfs
     if self.islfs() and getattr(fctx, 'islfs', lambda: False)():
         # fast path: check LFS oid
         p1 = pointer.deserialize(self.rawdata())
         p2 = pointer.deserialize(fctx.rawdata())
         return p1.oid() != p2.oid()
     return orig(self, fctx)
 
 def filectxisbinary(orig, self):
     if self.islfs():
         # fast path: use lfs metadata to answer isbinary
         metadata = pointer.deserialize(self.rawdata())
         # if lfs metadata says nothing, assume it's binary by default
         return bool(int(metadata.get('x-is-binary', 1)))
     return orig(self)
 
 def filectxislfs(self):
     return _islfs(self.filelog(), self.filenode())
 
 def _updatecatformatter(orig, fm, ctx, matcher, path, decode):
     orig(fm, ctx, matcher, path, decode)
     fm.data(rawdata=ctx[path].rawdata())
 
 def convertsink(orig, sink):
     sink = orig(sink)
     if sink.repotype == 'hg':
         class lfssink(sink.__class__):
             def putcommit(self, files, copies, parents, commit, source, revmap,
                           full, cleanp2):
                 pc = super(lfssink, self).putcommit
                 node = pc(files, copies, parents, commit, source, revmap, full,
                           cleanp2)
 
                 if 'lfs' not in self.repo.requirements:
                     ctx = self.repo[node]
 
                     # The file list may contain removed files, so check for
                     # membership before assuming it is in the context.
                     if any(f in ctx and ctx[f].islfs() for f, n in files):
                         self.repo.requirements.add('lfs')
                         self.repo._writerequirements()
 
                         # Permanently enable lfs locally
                         self.repo.vfs.append(
                             'hgrc', util.tonativeeol('\n[extensions]\nlfs=\n'))
 
                 return node
 
         sink.__class__ = lfssink
 
     return sink
 
 def vfsinit(orig, self, othervfs):
     orig(self, othervfs)
     # copy lfs related options
     for k, v in othervfs.options.items():
         if k.startswith('lfs'):
             self.options[k] = v
     # also copy lfs blobstores. note: this can run before reposetup, so lfs
     # blobstore attributes are not always ready at this time.
     for name in ['lfslocalblobstore', 'lfsremoteblobstore']:
         if util.safehasattr(othervfs, name):
             setattr(self, name, getattr(othervfs, name))
 
 def hgclone(orig, ui, opts, *args, **kwargs):
     result = orig(ui, opts, *args, **kwargs)
 
     if result is not None:
         sourcerepo, destrepo = result
         repo = destrepo.local()
 
         # When cloning to a remote repo (like through SSH), no repo is available
         # from the peer.  Therefore the hgrc can't be updated.
         if not repo:
             return result
 
         # If lfs is required for this repo, permanently enable it locally
         if 'lfs' in repo.requirements:
             repo.vfs.append('hgrc',
                             util.tonativeeol('\n[extensions]\nlfs=\n'))
 
     return result
 
 def hgpostshare(orig, sourcerepo, destrepo, bookmarks=True, defaultpath=None):
     orig(sourcerepo, destrepo, bookmarks, defaultpath)
 
     # If lfs is required for this repo, permanently enable it locally
     if 'lfs' in destrepo.requirements:
         destrepo.vfs.append('hgrc', util.tonativeeol('\n[extensions]\nlfs=\n'))
 
+def _prefetchfiles(repo, ctx, files):
+    """Ensure that required LFS blobs are present, fetching them as a group if
+    needed.
+
+    This is centralized logic for various prefetch hooks."""
+    pointers = []
+    localstore = repo.svfs.lfslocalblobstore
+
+    for f in files:
+        p = pointerfromctx(ctx, f)
+        if p and not localstore.has(p.oid()):
+            p.filename = f
+            pointers.append(p)
+
+    if pointers:
+        repo.svfs.lfsremoteblobstore.readbatch(pointers, localstore)
+
+def mergemodapplyupdates(orig, repo, actions, wctx, mctx, overwrite,
+                         labels=None):
+    """Ensure that the required LFS blobs are present before applying updates,
+    fetching them as a group if needed.
+
+    This has the effect of ensuring all necessary LFS blobs are present before
+    making working directory changes during an update (including after clone and
+    share) or merge."""
+
+    # Skipping 'a', 'am', 'f', 'r', 'dm', 'e', 'k', 'p' and 'pr', because they
+    # don't touch mctx.  'cd' is skipped, because changed/deleted never resolves
+    # to something from the remote side.
+    oplist = [actions[a] for a in 'g dc dg m'.split()]
+
+    _prefetchfiles(repo, mctx,
+                   [f for sublist in oplist for f, args, msg in sublist])
+
+    return orig(repo, actions, wctx, mctx, overwrite, labels)
+
 def _canskipupload(repo):
     # if remotestore is a null store, upload is a no-op and can be skipped
     return isinstance(repo.svfs.lfsremoteblobstore, blobstore._nullremote)
 
 def candownload(repo):
     # if remotestore is a null store, downloads will lead to nothing
     return not isinstance(repo.svfs.lfsremoteblobstore, blobstore._nullremote)
 
 def uploadblobsfromrevs(repo, revs):
     '''upload lfs blobs introduced by revs
 
     Note: also used by other extensions e. g. infinitepush. avoid renaming.
     '''
     if _canskipupload(repo):
         return
     pointers = extractpointers(repo, revs)
     uploadblobs(repo, pointers)
 
 def prepush(pushop):
     """Prepush hook.
 
     Read through the revisions to push, looking for filelog entries that can be
     deserialized into metadata so that we can block the push on their upload to
     the remote blobstore.
     """
     return uploadblobsfromrevs(pushop.repo, pushop.outgoing.missing)
 
 def push(orig, repo, remote, *args, **kwargs):
     """bail on push if the extension isn't enabled on remote when needed"""
     if 'lfs' in repo.requirements:
         # If the remote peer is for a local repo, the requirement tests in the
         # base class method enforce lfs support.  Otherwise, some revisions in
         # this repo use lfs, and the remote repo needs the extension loaded.
         if not remote.local() and not remote.capable('lfs'):
             # This is a copy of the message in exchange.push() when requirements
             # are missing between local repos.
             m = _("required features are not supported in the destination: %s")
             raise error.Abort(m % 'lfs',
                               hint=_('enable the lfs extension on the server'))
     return orig(repo, remote, *args, **kwargs)
 
 def writenewbundle(orig, ui, repo, source, filename, bundletype, outgoing,
                    *args, **kwargs):
     """upload LFS blobs added by outgoing revisions on 'hg bundle'"""
     uploadblobsfromrevs(repo, outgoing.missing)
     return orig(ui, repo, source, filename, bundletype, outgoing, *args,
                 **kwargs)
 
 def extractpointers(repo, revs):
     """return a list of lfs pointers added by given revs"""
     repo.ui.debug('lfs: computing set of blobs to upload\n')
     pointers = {}
     for r in revs:
         ctx = repo[r]
         for p in pointersfromctx(ctx).values():
             pointers[p.oid()] = p
     return sorted(pointers.values())
 
 def pointerfromctx(ctx, f):
     """return a pointer for the named file from the given changectx, or None if
     the file isn't LFS."""
     if f not in ctx:
         return None
     fctx = ctx[f]
     if not _islfs(fctx.filelog(), fctx.filenode()):
         return None
     try:
         return pointer.deserialize(fctx.rawdata())
     except pointer.InvalidPointer as ex:
         raise error.Abort(_('lfs: corrupted pointer (%s@%s): %s\n')
                           % (f, short(ctx.node()), ex))
 
 def pointersfromctx(ctx):
     """return a dict {path: pointer} for given single changectx"""
     result = {}
     for f in ctx.files():
         p = pointerfromctx(ctx, f)
         if p:
             result[f] = p
     return result
 
 def uploadblobs(repo, pointers):
     """upload given pointers from local blobstore"""
     if not pointers:
         return
 
     remoteblob = repo.svfs.lfsremoteblobstore
     remoteblob.writebatch(pointers, repo.svfs.lfslocalblobstore)
 
 def upgradefinishdatamigration(orig, ui, srcrepo, dstrepo, requirements):
     orig(ui, srcrepo, dstrepo, requirements)
 
     srclfsvfs = srcrepo.svfs.lfslocalblobstore.vfs
     dstlfsvfs = dstrepo.svfs.lfslocalblobstore.vfs
 
     for dirpath, dirs, files in srclfsvfs.walk():
         for oid in files:
             ui.write(_('copying lfs blob %s\n') % oid)
             lfutil.link(srclfsvfs.join(oid), dstlfsvfs.join(oid))
 
 def upgraderequirements(orig, repo):
     reqs = orig(repo)
     if 'lfs' in repo.requirements:
         reqs.add('lfs')
     return reqs

tests/test-lfs-test-server.t

@@ -1,208 +1,204 b''
 #require lfs-test-server
 
   $ LFS_LISTEN="tcp://:$HGPORT"
   $ LFS_HOST="localhost:$HGPORT"
   $ LFS_PUBLIC=1
   $ export LFS_LISTEN LFS_HOST LFS_PUBLIC
 #if no-windows
   $ lfs-test-server &> lfs-server.log &
   $ echo $! >> $DAEMON_PIDS
 #else
   $ cat >> $TESTTMP/spawn.py <<EOF
   > import os
   > import subprocess
   > import sys
   > 
   > for path in os.environ["PATH"].split(os.pathsep):
   >     exe = os.path.join(path, 'lfs-test-server.exe')
   >     if os.path.exists(exe):
   >         with open('lfs-server.log', 'wb') as out:
   >             p = subprocess.Popen(exe, stdout=out, stderr=out)
   >             sys.stdout.write('%s\n' % p.pid)
   >             sys.exit(0)
   > sys.exit(1)
   > EOF
   $ $PYTHON $TESTTMP/spawn.py >> $DAEMON_PIDS
 #endif
 
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > lfs=
   > [lfs]
   > url=http://foo:bar@$LFS_HOST/
   > track=all()
   > EOF
 
   $ hg init repo1
   $ cd repo1
   $ echo THIS-IS-LFS > a
   $ hg commit -m a -A a
 
 A push can be serviced directly from the usercache if it isn't in the local
 store.
 
   $ hg init ../repo2
   $ mv .hg/store/lfs .hg/store/lfs_
   $ hg push ../repo2 -v
   pushing to ../repo2
   searching for changes
   lfs: uploading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
   lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
   lfs: uploaded 1 files (12 bytes)
   1 changesets found
   uncompressed size of bundle content:
        * (changelog) (glob)
        * (manifests) (glob)
        *  a (glob)
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   calling hook pretxnchangegroup.lfs: hgext.lfs.checkrequireslfs
   $ mv .hg/store/lfs_ .hg/store/lfs
 
 Clear the cache to force a download
   $ rm -rf `hg config lfs.usercache`
   $ cd ../repo2
   $ hg update tip -v
   resolving manifests
-  getting a
   lfs: downloading 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b (12 bytes)
   lfs: adding 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b to the usercache
   lfs: processed: 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b
+  getting a
   lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 When the server has some blobs already
 
   $ hg mv a b
   $ echo ANOTHER-LARGE-FILE > c
   $ echo ANOTHER-LARGE-FILE2 > d
   $ hg commit -m b-and-c -A b c d
   $ hg push ../repo1 -v | grep -v '^  '
   pushing to ../repo1
   searching for changes
   lfs: need to transfer 2 objects (39 bytes)
   lfs: uploading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
   lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
   lfs: uploading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
   lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   lfs: uploaded 2 files (39 bytes)
   1 changesets found
   uncompressed size of bundle content:
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 3 changes to 3 files
 
 Clear the cache to force a download
   $ rm -rf `hg config lfs.usercache`
   $ hg --repo ../repo1 update tip -v
   resolving manifests
-  getting b
-  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
-  getting c
+  lfs: need to transfer 2 objects (39 bytes)
+  lfs: downloading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
+  lfs: adding 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 to the usercache
+  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
   lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
   lfs: adding d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 to the usercache
   lfs: processed: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
+  getting b
+  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
+  getting c
   lfs: found d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 in the local lfs store
   getting d
-  lfs: downloading 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 (20 bytes)
-  lfs: adding 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 to the usercache
-  lfs: processed: 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19
   lfs: found 37a65ab78d5ecda767e8622c248b5dbff1e68b1678ab0e730d5eb8601ec8ad19 in the local lfs store
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Test a corrupt file download, but clear the cache first to force a download.
 
   $ rm -rf `hg config lfs.usercache`
   $ cp $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 blob
   $ echo 'damage' > $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   $ rm ../repo1/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   $ rm ../repo1/*
 
   $ hg --repo ../repo1 update -C tip -v
   resolving manifests
-  getting a
-  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
-  getting b
-  lfs: found 31cf46fbc4ecd458a0943c5b4881f1f5a6dd36c53d6167d5b69ac45149b38e5b in the local lfs store
-  getting c
   lfs: downloading d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998 (19 bytes)
   abort: corrupt remote lfs object: d11e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   [255]
 
 The corrupted blob is not added to the usercache or local store
 
   $ test -f ../repo1/.hg/store/lfs/objects/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   [1]
   $ test -f `hg config lfs.usercache`/d1/1e1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
   [1]
   $ cp blob $TESTTMP/lfs-content/d1/1e/1a642b60813aee592094109b406089b8dff4cb157157f753418ec7857998
 
 Test a corrupted file upload
 
   $ echo 'another lfs blob' > b
   $ hg ci -m 'another blob'
   $ echo 'damage' > .hg/store/lfs/objects/e6/59058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0
   $ hg push -v ../repo1
   pushing to ../repo1
   searching for changes
   lfs: uploading e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0 (17 bytes)
   abort: detected corrupt lfs object: e659058e26b07b39d2a9c7145b3f99b41f797b6621c8076600e9cb7ee88291f0
   (run hg verify)
   [255]
 
 Check error message when the remote missed a blob:
 
   $ echo FFFFF > b
   $ hg commit -m b -A b
   $ echo FFFFF >> b
   $ hg commit -m b b
   $ rm -rf .hg/store/lfs
   $ rm -rf `hg config lfs.usercache`
   $ hg update -C '.^'
   abort: LFS server error. Remote object for "b" not found:(.*)! (re)
   [255]
 
 Check error message when object does not exist:
 
   $ cd $TESTTMP
   $ hg init test && cd test
   $ echo "[extensions]" >> .hg/hgrc
   $ echo "lfs=" >> .hg/hgrc
   $ echo "[lfs]" >> .hg/hgrc
   $ echo "threshold=1" >> .hg/hgrc
   $ echo a > a
   $ hg add a
   $ hg commit -m 'test'
   $ echo aaaaa > a
   $ hg commit -m 'largefile'
   $ hg debugdata .hg/store/data/a.i 1 # verify this is no the file content but includes "oid", the LFS "pointer".
   version https://git-lfs.github.com/spec/v1
   oid sha256:bdc26931acfb734b142a8d675f205becf27560dc461f501822de13274fe6fc8a
   size 6
   x-is-binary 0
   $ cd ..
   $ rm -rf `hg config lfs.usercache`
 
 (Restart the server in a different location so it no longer has the content)
 
   $ $PYTHON $RUNTESTDIR/killdaemons.py $DAEMON_PIDS
   $ rm $DAEMON_PIDS
   $ mkdir $TESTTMP/lfs-server2
   $ cd $TESTTMP/lfs-server2
 #if no-windows
   $ lfs-test-server &> lfs-server.log &
   $ echo $! >> $DAEMON_PIDS
 #else
   $ $PYTHON $TESTTMP/spawn.py >> $DAEMON_PIDS
 #endif
 
   $ cd $TESTTMP
   $ hg clone test test2
   updating to branch default
   abort: LFS server error. Remote object for "a" not found:(.*)! (re)
   [255]
 
   $ $PYTHON $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

tests/test-lfs.t

@@ -1,1059 +1,1058 b''
 # Initial setup
 
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > lfs=
   > [lfs]
   > # Test deprecated config
   > threshold=1000B
   > EOF
 
   $ LONG=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 
 # Prepare server and enable extension
   $ hg init server
   $ hg clone -q server client
   $ cd client
 
 # Commit small file
   $ echo s > smallfile
   $ echo '**.py = LF' > .hgeol
   $ hg --config lfs.track='"size(\">1000B\")"' commit -Aqm "add small file"
   hg: parse error: unsupported file pattern: size(">1000B")
   (paths must be prefixed with "path:")
   [255]
   $ hg --config lfs.track='size(">1000B")' commit -Aqm "add small file"
 
 # Commit large file
   $ echo $LONG > largefile
   $ grep lfs .hg/requires
   [1]
   $ hg commit --traceback -Aqm "add large file"
   $ grep lfs .hg/requires
   lfs
 
 # Ensure metadata is stored
   $ hg debugdata largefile 0
   version https://git-lfs.github.com/spec/v1
   oid sha256:f11e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
   size 1501
   x-is-binary 0
 
 # Check the blobstore is populated
   $ find .hg/store/lfs/objects | sort
   .hg/store/lfs/objects
   .hg/store/lfs/objects/f1
   .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
 
 # Check the blob stored contains the actual contents of the file
   $ cat .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
   AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 
 # Push changes to the server
 
   $ hg push
   pushing to $TESTTMP/server
   searching for changes
   abort: lfs.url needs to be configured
   [255]
 
   $ cat >> $HGRCPATH << EOF
   > [lfs]
   > url=file:$TESTTMP/dummy-remote/
   > EOF
 
 Push to a local non-lfs repo with the extension enabled will add the
 lfs requirement
 
   $ grep lfs $TESTTMP/server/.hg/requires
   [1]
   $ hg push -v | egrep -v '^(uncompressed| )'
   pushing to $TESTTMP/server
   searching for changes
   lfs: found f11e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b in the local lfs store
   2 changesets found
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 3 changes to 3 files
   calling hook pretxnchangegroup.lfs: hgext.lfs.checkrequireslfs
   $ grep lfs $TESTTMP/server/.hg/requires
   lfs
 
 # Unknown URL scheme
 
   $ hg push --config lfs.url=ftp://foobar
   abort: lfs: unknown url scheme: ftp
   [255]
 
   $ cd ../
 
 # Initialize new client (not cloning) and setup extension
   $ hg init client2
   $ cd client2
   $ cat >> .hg/hgrc <<EOF
   > [paths]
   > default = $TESTTMP/server
   > EOF
 
 # Pull from server
 
 Pulling a local lfs repo into a local non-lfs repo with the extension
 enabled adds the lfs requirement
 
   $ grep lfs .hg/requires $TESTTMP/server/.hg/requires
   $TESTTMP/server/.hg/requires:lfs
   $ hg pull default
   pulling from $TESTTMP/server
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 3 changes to 3 files
   new changesets 0ead593177f7:b88141481348
   (run 'hg update' to get a working copy)
   $ grep lfs .hg/requires $TESTTMP/server/.hg/requires
   .hg/requires:lfs
   $TESTTMP/server/.hg/requires:lfs
 
 # Check the blobstore is not yet populated
   $ [ -d .hg/store/lfs/objects ]
   [1]
 
 # Update to the last revision containing the large file
   $ hg update
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 # Check the blobstore has been populated on update
   $ find .hg/store/lfs/objects | sort
   .hg/store/lfs/objects
   .hg/store/lfs/objects/f1
   .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
 
 # Check the contents of the file are fetched from blobstore when requested
   $ hg cat -r . largefile
   AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 
 # Check the file has been copied in the working copy
   $ cat largefile
   AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 
   $ cd ..
 
 # Check rename, and switch between large and small files
 
   $ hg init repo3
   $ cd repo3
   $ cat >> .hg/hgrc << EOF
   > [lfs]
   > track=size(">10B")
   > EOF
 
   $ echo LONGER-THAN-TEN-BYTES-WILL-TRIGGER-LFS > large
   $ echo SHORTER > small
   $ hg add . -q
   $ hg commit -m 'commit with lfs content'
 
   $ hg mv large l
   $ hg mv small s
   $ hg commit -m 'renames'
 
   $ echo SHORT > l
   $ echo BECOME-LARGER-FROM-SHORTER > s
   $ hg commit -m 'large to small, small to large'
 
   $ echo 1 >> l
   $ echo 2 >> s
   $ hg commit -m 'random modifications'
 
   $ echo RESTORE-TO-BE-LARGE > l
   $ echo SHORTER > s
   $ hg commit -m 'switch large and small again'
 
 # Test lfs_files template
 
   $ hg log -r 'all()' -T '{rev} {join(lfs_files, ", ")}\n'
   0 large
   1 l
   2 s
   3 s
   4 l
 
 # Push and pull the above repo
 
   $ hg --cwd .. init repo4
   $ hg push ../repo4
   pushing to ../repo4
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 10 changes to 4 files
 
   $ hg --cwd .. init repo5
   $ hg --cwd ../repo5 pull ../repo3
   pulling from ../repo3
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 10 changes to 4 files
   new changesets fd47a419c4f7:5adf850972b9
   (run 'hg update' to get a working copy)
 
   $ cd ..
 
 # Test clone
 
   $ hg init repo6
   $ cd repo6
   $ cat >> .hg/hgrc << EOF
   > [lfs]
   > track=size(">30B")
   > EOF
 
   $ echo LARGE-BECAUSE-IT-IS-MORE-THAN-30-BYTES > large
   $ echo SMALL > small
   $ hg commit -Aqm 'create a lfs file' large small
   $ hg debuglfsupload -r 'all()' -v
   lfs: found 8e92251415339ae9b148c8da89ed5ec665905166a1ab11b09dca8fad83344738 in the local lfs store
 
   $ cd ..
 
   $ hg clone repo6 repo7
   updating to branch default
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd repo7
   $ hg config extensions --debug | grep lfs
   $TESTTMP/repo7/.hg/hgrc:*: extensions.lfs= (glob)
   $ cat large
   LARGE-BECAUSE-IT-IS-MORE-THAN-30-BYTES
   $ cat small
   SMALL
 
   $ cd ..
 
   $ hg --config extensions.share= share repo7 sharedrepo
   updating working directory
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R sharedrepo config extensions --debug | grep lfs
   $TESTTMP/sharedrepo/.hg/hgrc:*: extensions.lfs= (glob)
 
 # Test rename and status
 
   $ hg init repo8
   $ cd repo8
   $ cat >> .hg/hgrc << EOF
   > [lfs]
   > track=size(">10B")
   > EOF
 
   $ echo THIS-IS-LFS-BECAUSE-10-BYTES > a1
   $ echo SMALL > a2
   $ hg commit -m a -A a1 a2
   $ hg status
   $ hg mv a1 b1
   $ hg mv a2 a1
   $ hg mv b1 a2
   $ hg commit -m b
   $ hg status
   >>> with open('a2', 'wb') as f:
   ...     f.write(b'\1\nSTART-WITH-HG-FILELOG-METADATA')
   >>> with open('a1', 'wb') as f:
   ...     f.write(b'\1\nMETA\n')
   $ hg commit -m meta
   $ hg status
   $ hg log -T '{rev}: {file_copies} | {file_dels} | {file_adds}\n'
   2:  |  | 
   1: a1 (a2)a2 (a1) |  | 
   0:  |  | a1 a2
 
   $ for n in a1 a2; do
   >   for r in 0 1 2; do
   >     printf '\n%s @ %s\n' $n $r
   >     hg debugdata $n $r
   >   done
   > done
   
   a1 @ 0
   version https://git-lfs.github.com/spec/v1
   oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   size 29
   x-is-binary 0
   
   a1 @ 1
   \x01 (esc)
   copy: a2
   copyrev: 50470ad23cf937b1f4b9f80bfe54df38e65b50d9
   \x01 (esc)
   SMALL
   
   a1 @ 2
   \x01 (esc)
   \x01 (esc)
   \x01 (esc)
   META
   
   a2 @ 0
   SMALL
   
   a2 @ 1
   version https://git-lfs.github.com/spec/v1
   oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   size 29
   x-hg-copy a1
   x-hg-copyrev be23af27908a582af43e5cda209a5a9b319de8d4
   x-is-binary 0
   
   a2 @ 2
   version https://git-lfs.github.com/spec/v1
   oid sha256:876dadc86a8542f9798048f2c47f51dbf8e4359aed883e8ec80c5db825f0d943
   size 32
   x-is-binary 0
 
 # Verify commit hashes include rename metadata
 
   $ hg log -T '{rev}:{node|short} {desc}\n'
   2:0fae949de7fa meta
   1:9cd6bdffdac0 b
   0:7f96794915f7 a
 
   $ cd ..
 
 # Test bundle
 
   $ hg init repo9
   $ cd repo9
   $ cat >> .hg/hgrc << EOF
   > [lfs]
   > track=size(">10B")
   > [diff]
   > git=1
   > EOF
 
   $ for i in 0 single two three 4; do
   >   echo 'THIS-IS-LFS-'$i > a
   >   hg commit -m a-$i -A a
   > done
 
   $ hg update 2 -q
   $ echo 'THIS-IS-LFS-2-CHILD' > a
   $ hg commit -m branching -q
 
   $ hg bundle --base 1 bundle.hg -v
   lfs: found 5ab7a3739a5feec94a562d070a14f36dba7cad17e5484a4a89eea8e5f3166888 in the local lfs store
   lfs: found a9c7d1cd6ce2b9bbdf46ed9a862845228717b921c089d0d42e3bcaed29eb612e in the local lfs store
   lfs: found f693890c49c409ec33673b71e53f297681f76c1166daf33b2ad7ebf8b1d3237e in the local lfs store
   lfs: found fda198fea753eb66a252e9856915e1f5cddbe41723bd4b695ece2604ad3c9f75 in the local lfs store
   4 changesets found
   uncompressed size of bundle content:
        * (changelog) (glob)
        * (manifests) (glob)
        *  a (glob)
   $ hg --config extensions.strip= strip -r 2 --no-backup --force -q
   $ hg -R bundle.hg log -p -T '{rev} {desc}\n' a
   5 branching
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-two
   +THIS-IS-LFS-2-CHILD
   
   4 a-4
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-three
   +THIS-IS-LFS-4
   
   3 a-three
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-two
   +THIS-IS-LFS-three
   
   2 a-two
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-single
   +THIS-IS-LFS-two
   
   1 a-single
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-0
   +THIS-IS-LFS-single
   
   0 a-0
   diff --git a/a b/a
   new file mode 100644
   --- /dev/null
   +++ b/a
   @@ -0,0 +1,1 @@
   +THIS-IS-LFS-0
   
   $ hg bundle -R bundle.hg --base 1 bundle-again.hg -q
   $ hg -R bundle-again.hg log -p -T '{rev} {desc}\n' a
   5 branching
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-two
   +THIS-IS-LFS-2-CHILD
   
   4 a-4
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-three
   +THIS-IS-LFS-4
   
   3 a-three
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-two
   +THIS-IS-LFS-three
   
   2 a-two
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-single
   +THIS-IS-LFS-two
   
   1 a-single
   diff --git a/a b/a
   --- a/a
   +++ b/a
   @@ -1,1 +1,1 @@
   -THIS-IS-LFS-0
   +THIS-IS-LFS-single
   
   0 a-0
   diff --git a/a b/a
   new file mode 100644
   --- /dev/null
   +++ b/a
   @@ -0,0 +1,1 @@
   +THIS-IS-LFS-0
   
   $ cd ..
 
 # Test isbinary
 
   $ hg init repo10
   $ cd repo10
   $ cat >> .hg/hgrc << EOF
   > [extensions]
   > lfs=
   > [lfs]
   > track=all()
   > EOF
   $ $PYTHON <<'EOF'
   > def write(path, content):
   >     with open(path, 'wb') as f:
   >         f.write(content)
   > write('a', b'\0\0')
   > write('b', b'\1\n')
   > write('c', b'\1\n\0')
   > write('d', b'xx')
   > EOF
   $ hg add a b c d
   $ hg diff --stat
    a |  Bin 
    b |    1 +
    c |  Bin 
    d |    1 +
    4 files changed, 2 insertions(+), 0 deletions(-)
   $ hg commit -m binarytest
   $ cat > $TESTTMP/dumpbinary.py << EOF
   > def reposetup(ui, repo):
   >     for n in 'abcd':
   >         ui.write(('%s: binary=%s\n') % (n, repo['.'][n].isbinary()))
   > EOF
   $ hg --config extensions.dumpbinary=$TESTTMP/dumpbinary.py id --trace
   a: binary=True
   b: binary=False
   c: binary=True
   d: binary=False
   b55353847f02 tip
 
   $ cd ..
 
 # Test fctx.cmp fastpath - diff without LFS blobs
 
   $ hg init repo12
   $ cd repo12
   $ cat >> .hg/hgrc <<EOF
   > [lfs]
   > threshold=1
   > EOF
   $ cat > ../patch.diff <<EOF
   > # HG changeset patch
   > 2
   > 
   > diff --git a/a b/a
   > old mode 100644
   > new mode 100755
   > EOF
 
   $ for i in 1 2 3; do
   >     cp ../repo10/a a
   >     if [ $i = 3 ]; then
   >         # make a content-only change
   >         hg import -q --bypass ../patch.diff
   >         hg update -q
   >         rm ../patch.diff
   >     else
   >         echo $i >> a
   >         hg commit -m $i -A a
   >     fi
   > done
   $ [ -d .hg/store/lfs/objects ]
 
   $ cd ..
 
   $ hg clone repo12 repo13 --noupdate
   $ cd repo13
   $ hg log --removed -p a -T '{desc}\n' --config diff.nobinary=1 --git
   2
   diff --git a/a b/a
   old mode 100644
   new mode 100755
   
   2
   diff --git a/a b/a
   Binary file a has changed
   
   1
   diff --git a/a b/a
   new file mode 100644
   Binary file a has changed
   
   $ [ -d .hg/store/lfs/objects ]
   [1]
 
   $ cd ..
 
 # Test filter
 
   $ hg init repo11
   $ cd repo11
   $ cat >> .hg/hgrc << EOF
   > [lfs]
   > track=(**.a & size(">5B")) | (**.b & !size(">5B"))
   >      | (**.c & "path:d" & !"path:d/c.c") | size(">10B")
   > EOF
 
   $ mkdir a
   $ echo aaaaaa > a/1.a
   $ echo a > a/2.a
   $ echo aaaaaa > 1.b
   $ echo a > 2.b
   $ echo a > 1.c
   $ mkdir d
   $ echo a > d/c.c
   $ echo a > d/d.c
   $ echo aaaaaaaaaaaa > x
   $ hg add . -q
   $ hg commit -m files
 
   $ for p in a/1.a a/2.a 1.b 2.b 1.c d/c.c d/d.c x; do
   >   if hg debugdata $p 0 2>&1 | grep git-lfs >/dev/null; then
   >     echo "${p}: is lfs"
   >   else
   >     echo "${p}: not lfs"
   >   fi
   > done
   a/1.a: is lfs
   a/2.a: not lfs
   1.b: not lfs
   2.b: is lfs
   1.c: not lfs
   d/c.c: not lfs
   d/d.c: is lfs
   x: is lfs
 
   $ cd ..
 
 # Verify the repos
 
   $ cat > $TESTTMP/dumpflog.py << EOF
   > # print raw revision sizes, flags, and hashes for certain files
   > import hashlib
   > from mercurial import revlog
   > from mercurial.node import short
   > def hash(rawtext):
   >     h = hashlib.sha512()
   >     h.update(rawtext)
   >     return h.hexdigest()[:4]
   > def reposetup(ui, repo):
   >     # these 2 files are interesting
   >     for name in ['l', 's']:
   >         fl = repo.file(name)
   >         if len(fl) == 0:
   >             continue
   >         sizes = [revlog.revlog.rawsize(fl, i) for i in fl]
   >         texts = [fl.revision(i, raw=True) for i in fl]
   >         flags = [int(fl.flags(i)) for i in fl]
   >         hashes = [hash(t) for t in texts]
   >         print('  %s: rawsizes=%r flags=%r hashes=%r'
   >               % (name, sizes, flags, hashes))
   > EOF
 
   $ for i in client client2 server repo3 repo4 repo5 repo6 repo7 repo8 repo9 \
   >          repo10; do
   >   echo 'repo:' $i
   >   hg --cwd $i verify --config extensions.dumpflog=$TESTTMP/dumpflog.py -q
   > done
   repo: client
   repo: client2
   repo: server
   repo: repo3
     l: rawsizes=[211, 6, 8, 141] flags=[8192, 0, 0, 8192] hashes=['d2b8', '948c', 'cc88', '724d']
     s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
   repo: repo4
     l: rawsizes=[211, 6, 8, 141] flags=[8192, 0, 0, 8192] hashes=['d2b8', '948c', 'cc88', '724d']
     s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
   repo: repo5
     l: rawsizes=[211, 6, 8, 141] flags=[8192, 0, 0, 8192] hashes=['d2b8', '948c', 'cc88', '724d']
     s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
   repo: repo6
   repo: repo7
   repo: repo8
   repo: repo9
   repo: repo10
 
 repo13 doesn't have any cached lfs files and its source never pushed its
 files.  Therefore, the files don't exist in the remote store.  Use the files in
 the user cache.
 
   $ test -d $TESTTMP/repo13/.hg/store/lfs/objects
   [1]
 
   $ hg --config extensions.share= share repo13 repo14
   updating working directory
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R repo14 -q verify
 
   $ hg clone repo13 repo15
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R repo15 -q verify
 
 If the source repo doesn't have the blob (maybe it was pulled or cloned with
 --noupdate), the blob is still accessible via the global cache to send to the
 remote store.
 
   $ rm -rf $TESTTMP/repo15/.hg/store/lfs
   $ hg init repo16
   $ hg -R repo15 push repo16
   pushing to repo16
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 2 changes to 1 files
   $ hg -R repo15 -q verify
 
 Test damaged file scenarios.  (This also damages the usercache because of the
 hardlinks.)
 
   $ echo 'damage' >> repo5/.hg/store/lfs/objects/66/100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
 
 Repo with damaged lfs objects in any revision will fail verification.
 
   $ hg -R repo5 verify
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
    l@1: unpacking 46a2f24864bc: integrity check failed on data/l.i:0
    large@0: unpacking 2c531e0992ff: integrity check failed on data/large.i:0
   4 files, 5 changesets, 10 total revisions
   2 integrity errors encountered!
   (first damaged changeset appears to be 0)
   [1]
 
 Updates work after cloning a damaged repo, if the damaged lfs objects aren't in
 the update destination.  Those objects won't be added to the new repo's store
 because they aren't accessed.
 
   $ hg clone -v repo5 fromcorrupt
   updating to branch default
   resolving manifests
   getting l
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the usercache
   getting s
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ test -f fromcorrupt/.hg/store/lfs/objects/66/100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
   [1]
 
 Verify will copy/link all lfs objects into the local store that aren't already
 present.  Bypass the corrupted usercache to show that verify works when fed by
 the (uncorrupted) remote store.
 
   $ hg -R fromcorrupt --config lfs.usercache=emptycache verify -v
   repository uses revlog format 1
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   lfs: adding 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e to the usercache
   lfs: found 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e in the local lfs store
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the local lfs store
   lfs: found 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e in the local lfs store
   lfs: adding 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 to the usercache
   lfs: found 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 in the local lfs store
   lfs: adding b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c to the usercache
   lfs: found b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c in the local lfs store
   4 files, 5 changesets, 10 total revisions
 
 Verify will not copy/link a corrupted file from the usercache into the local
 store, and poison it.  (The verify with a good remote now works.)
 
   $ rm -r fromcorrupt/.hg/store/lfs/objects/66/100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
   $ hg -R fromcorrupt verify -v
   repository uses revlog format 1
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
    l@1: unpacking 46a2f24864bc: integrity check failed on data/l.i:0
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the local lfs store
    large@0: unpacking 2c531e0992ff: integrity check failed on data/large.i:0
   lfs: found 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 in the local lfs store
   lfs: found b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c in the local lfs store
   4 files, 5 changesets, 10 total revisions
   2 integrity errors encountered!
   (first damaged changeset appears to be 0)
   [1]
   $ hg -R fromcorrupt --config lfs.usercache=emptycache verify -v
   repository uses revlog format 1
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   lfs: found 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e in the usercache
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the local lfs store
   lfs: found 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e in the local lfs store
   lfs: found 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 in the local lfs store
   lfs: found b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c in the local lfs store
   4 files, 5 changesets, 10 total revisions
 
 Damaging a file required by the update destination fails the update.
 
   $ echo 'damage' >> $TESTTMP/dummy-remote/22/f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   $ hg --config lfs.usercache=emptycache clone -v repo5 fromcorrupt2
   updating to branch default
   resolving manifests
-  getting l
   abort: corrupt remote lfs object: 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   [255]
 
 A corrupted lfs blob is not transferred from a file://remotestore to the
 usercache or local store.
 
   $ test -f emptycache/22/f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   [1]
   $ test -f fromcorrupt2/.hg/store/lfs/objects/22/f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   [1]
 
   $ hg -R fromcorrupt2 verify
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
    l@1: unpacking 46a2f24864bc: integrity check failed on data/l.i:0
    large@0: unpacking 2c531e0992ff: integrity check failed on data/large.i:0
   4 files, 5 changesets, 10 total revisions
   2 integrity errors encountered!
   (first damaged changeset appears to be 0)
   [1]
 
 Corrupt local files are not sent upstream.  (The alternate dummy remote
 avoids the corrupt lfs object in the original remote.)
 
   $ mkdir $TESTTMP/dummy-remote2
   $ hg init dest
   $ hg -R fromcorrupt2 --config lfs.url=file:///$TESTTMP/dummy-remote2 push -v dest
   pushing to dest
   searching for changes
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the local lfs store
   lfs: found 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 in the local lfs store
   lfs: found b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c in the local lfs store
   abort: detected corrupt lfs object: 66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
   (run hg verify)
   [255]
 
   $ hg -R fromcorrupt2 --config lfs.url=file:///$TESTTMP/dummy-remote2 verify -v
   repository uses revlog format 1
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
    l@1: unpacking 46a2f24864bc: integrity check failed on data/l.i:0
   lfs: found 22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b in the local lfs store
    large@0: unpacking 2c531e0992ff: integrity check failed on data/large.i:0
   lfs: found 89b6070915a3d573ff3599d1cda305bc5e38549b15c4847ab034169da66e1ca8 in the local lfs store
   lfs: found b1a6ea88da0017a0e77db139a54618986e9a2489bee24af9fe596de9daac498c in the local lfs store
   4 files, 5 changesets, 10 total revisions
   2 integrity errors encountered!
   (first damaged changeset appears to be 0)
   [1]
 
   $ cat $TESTTMP/dummy-remote2/22/f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b | $TESTDIR/f --sha256
   sha256=22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   $ cat fromcorrupt2/.hg/store/lfs/objects/22/f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b | $TESTDIR/f --sha256
   sha256=22f66a3fc0b9bf3f012c814303995ec07099b3a9ce02a7af84b5970811074a3b
   $ test -f $TESTTMP/dummy-remote2/66/100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
   [1]
 
 Accessing a corrupt file will complain
 
   $ hg --cwd fromcorrupt2 cat -r 0 large
   abort: integrity check failed on data/large.i:0!
   [255]
 
 lfs -> normal -> lfs round trip conversions are possible.  The 'none()'
 predicate on the command line will override whatever is configured globally and
 locally, and ensures everything converts to a regular file.  For lfs -> normal,
 there's no 'lfs' destination repo requirement.  For normal -> lfs, there is.
 
   $ hg --config extensions.convert= --config 'lfs.track=none()' \
   >    convert repo8 convert_normal
   initializing destination convert_normal repository
   scanning source...
   sorting...
   converting...
   2 a
   1 b
   0 meta
   $ grep 'lfs' convert_normal/.hg/requires
   [1]
   $ hg --cwd convert_normal cat a1 -r 0 -T '{rawdata}'
   THIS-IS-LFS-BECAUSE-10-BYTES
 
   $ hg --config extensions.convert= --config lfs.threshold=10B \
   >    convert convert_normal convert_lfs
   initializing destination convert_lfs repository
   scanning source...
   sorting...
   converting...
   2 a
   1 b
   0 meta
 
   $ hg --cwd convert_lfs cat -r 0 a1 -T '{rawdata}'
   version https://git-lfs.github.com/spec/v1
   oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   size 29
   x-is-binary 0
   $ hg --cwd convert_lfs debugdata a1 0
   version https://git-lfs.github.com/spec/v1
   oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   size 29
   x-is-binary 0
   $ hg --cwd convert_lfs log -r 0 -T "{lfs_files % '{lfspointer % '{key}={value}\n'}'}"
   version=https://git-lfs.github.com/spec/v1
   oid=sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   size=29
   x-is-binary=0
   $ hg --cwd convert_lfs log -r 0 \
   >    -T '{lfs_files % "{get(lfspointer, "oid")}\n"}{lfs_files % "{lfspointer.oid}\n"}'
   sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   $ hg --cwd convert_lfs log -r 0 -T '{lfs_files % "{lfspointer}\n"}'
   version=https://git-lfs.github.com/spec/v1 oid=sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024 size=29 x-is-binary=0
   $ hg --cwd convert_lfs \
   >     log -r 'all()' -T '{rev}: {lfs_files % "{file}: {lfsoid}\n"}'
   0: a1: 5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   1: a2: 5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
   2: a2: 876dadc86a8542f9798048f2c47f51dbf8e4359aed883e8ec80c5db825f0d943
 
   $ grep 'lfs' convert_lfs/.hg/requires
   lfs
 
 The hashes in all stages of the conversion are unchanged.
 
   $ hg -R repo8 log -T '{node|short}\n'
   0fae949de7fa
   9cd6bdffdac0
   7f96794915f7
   $ hg -R convert_normal log -T '{node|short}\n'
   0fae949de7fa
   9cd6bdffdac0
   7f96794915f7
   $ hg -R convert_lfs log -T '{node|short}\n'
   0fae949de7fa
   9cd6bdffdac0
   7f96794915f7
 
 This convert is trickier, because it contains deleted files (via `hg mv`)
 
   $ hg --config extensions.convert= --config lfs.threshold=1000M \
   >    convert repo3 convert_normal2
   initializing destination convert_normal2 repository
   scanning source...
   sorting...
   converting...
   4 commit with lfs content
   3 renames
   2 large to small, small to large
   1 random modifications
   0 switch large and small again
   $ grep 'lfs' convert_normal2/.hg/requires
   [1]
   $ hg --cwd convert_normal2 debugdata large 0
   LONGER-THAN-TEN-BYTES-WILL-TRIGGER-LFS
 
   $ hg --config extensions.convert= --config lfs.threshold=10B \
   >    convert convert_normal2 convert_lfs2
   initializing destination convert_lfs2 repository
   scanning source...
   sorting...
   converting...
   4 commit with lfs content
   3 renames
   2 large to small, small to large
   1 random modifications
   0 switch large and small again
   $ grep 'lfs' convert_lfs2/.hg/requires
   lfs
   $ hg --cwd convert_lfs2 debugdata large 0
   version https://git-lfs.github.com/spec/v1
   oid sha256:66100b384bf761271b407d79fc30cdd0554f3b2c5d944836e936d584b88ce88e
   size 39
   x-is-binary 0
 
   $ hg -R convert_lfs2 config --debug extensions | grep lfs
   $TESTTMP/convert_lfs2/.hg/hgrc:*: extensions.lfs= (glob)
 
 Committing deleted files works:
 
   $ hg init $TESTTMP/repo-del
   $ cd $TESTTMP/repo-del
   $ echo 1 > A
   $ hg commit -m 'add A' -A A
   $ hg rm A
   $ hg commit -m 'rm A'
 
 Bad .hglfs files will block the commit with a useful message
 
   $ cat > .hglfs << EOF
   > [track]
   > **.test = size(">5B")
   > bad file ... no commit
   > EOF
 
   $ echo x > file.txt
   $ hg ci -Aqm 'should fail'
   hg: parse error at .hglfs:3: bad file ... no commit
   [255]
 
   $ cat > .hglfs << EOF
   > [track]
   > **.test = size(">5B")
   > ** = nonexistent()
   > EOF
 
   $ hg ci -Aqm 'should fail'
   abort: parse error in .hglfs: unknown identifier: nonexistent
   [255]
 
 '**' works out to mean all files.
 
   $ cat > .hglfs << EOF
   > [track]
   > path:.hglfs = none()
   > **.test = size(">5B")
   > **.exclude = none()
   > ** = size(">10B")
   > EOF
 
 The LFS policy takes effect without tracking the .hglfs file
 
   $ echo 'largefile' > lfs.test
   $ echo '012345678901234567890' > nolfs.exclude
   $ echo '01234567890123456' > lfs.catchall
   $ hg add *
   $ hg ci -qm 'before add .hglfs'
   $ hg log -r . -T '{rev}: {lfs_files % "{file}: {lfsoid}\n"}\n'
   2: lfs.catchall: d4ec46c2869ba22eceb42a729377432052d9dd75d82fc40390ebaadecee87ee9
   lfs.test: 5489e6ced8c36a7b267292bde9fd5242a5f80a7482e8f23fa0477393dfaa4d6c
   
 The .hglfs file works when tracked
 
   $ echo 'largefile2' > lfs.test
   $ echo '012345678901234567890a' > nolfs.exclude
   $ echo '01234567890123456a' > lfs.catchall
   $ hg ci -Aqm 'after adding .hglfs'
   $ hg log -r . -T '{rev}: {lfs_files % "{file}: {lfsoid}\n"}\n'
   3: lfs.catchall: 31f43b9c62b540126b0ad5884dc013d21a61c9329b77de1fceeae2fc58511573
   lfs.test: 8acd23467967bc7b8cc5a280056589b0ba0b17ff21dbd88a7b6474d6290378a6
   
 The LFS policy stops when the .hglfs is gone
 
   $ hg rm .hglfs
   $ echo 'largefile3' > lfs.test
   $ echo '012345678901234567890abc' > nolfs.exclude
   $ echo '01234567890123456abc' > lfs.catchall
   $ hg ci -qm 'file test' -X .hglfs
   $ hg log -r . -T '{rev}: {lfs_files % "{file}: {lfsoid}\n"}\n'
   4: 
 
   $ cd ..
 
 Unbundling adds a requirement to a non-lfs repo, if necessary.
 
   $ hg bundle -R $TESTTMP/repo-del -qr 0 --base null nolfs.hg
   $ hg bundle -R convert_lfs2 -qr tip --base null lfs.hg
   $ hg init unbundle
   $ hg pull -R unbundle -q nolfs.hg
   $ grep lfs unbundle/.hg/requires
   [1]
   $ hg pull -R unbundle -q lfs.hg
   $ grep lfs unbundle/.hg/requires
   lfs
 
   $ hg init no_lfs
   $ cat >> no_lfs/.hg/hgrc <<EOF
   > [experimental]
   > changegroup3 = True
   > [extensions]
   > lfs=!
   > EOF
   $ cp -R no_lfs no_lfs2
 
 Pushing from a local lfs repo to a local repo without an lfs requirement and
 with lfs disabled, fails.
 
   $ hg push -R convert_lfs2 no_lfs
   pushing to no_lfs
   abort: required features are not supported in the destination: lfs
   [255]
   $ grep lfs no_lfs/.hg/requires
   [1]
 
 Pulling from a local lfs repo to a local repo without an lfs requirement and
 with lfs disabled, fails.
 
   $ hg pull -R no_lfs2 convert_lfs2
   pulling from convert_lfs2
   abort: required features are not supported in the destination: lfs
   [255]
   $ grep lfs no_lfs2/.hg/requires
   [1]