rust: implement the `Graph` trait for all revlogs
This is trivial and makes all the algorithms relying on the trait usable
for more use cases.
# hg.py - repository classes for mercurial
#
# Copyright 2005-2007 Olivia Mackall <olivia@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import os
import posixpath
import shutil
import stat
import weakref
from .i18n import _
from .node import (
hex,
sha1nodeconstants,
short,
)
from . import (
bookmarks,
bundlerepo,
cmdutil,
destutil,
discovery,
error,
exchange,
extensions,
graphmod,
httppeer,
localrepo,
lock,
logcmdutil,
logexchange,
merge as mergemod,
mergestate as mergestatemod,
narrowspec,
phases,
requirements,
scmutil,
sshpeer,
statichttprepo,
ui as uimod,
unionrepo,
url,
util,
verify as verifymod,
vfs as vfsmod,
)
from .interfaces import repository as repositorymod
from .utils import (
hashutil,
stringutil,
urlutil,
)
release = lock.release
# shared features
sharedbookmarks = b'bookmarks'
def addbranchrevs(lrepo, other, branches, revs, remotehidden=False):
if hasattr(other, 'peer'):
# a courtesy to callers using a localrepo for other
peer = other.peer(remotehidden=remotehidden)
else:
peer = other
hashbranch, branches = branches
if not hashbranch and not branches:
x = revs or None
if revs:
y = revs[0]
else:
y = None
return x, y
if revs:
revs = list(revs)
else:
revs = []
if not peer.capable(b'branchmap'):
if branches:
raise error.Abort(_(b"remote branch lookup not supported"))
revs.append(hashbranch)
return revs, revs[0]
with peer.commandexecutor() as e:
branchmap = e.callcommand(b'branchmap', {}).result()
def primary(branch):
if branch == b'.':
if not lrepo:
raise error.Abort(_(b"dirstate branch not accessible"))
branch = lrepo.dirstate.branch()
if branch in branchmap:
revs.extend(hex(r) for r in reversed(branchmap[branch]))
return True
else:
return False
for branch in branches:
if not primary(branch):
raise error.RepoLookupError(_(b"unknown branch '%s'") % branch)
if hashbranch:
if not primary(hashbranch):
revs.append(hashbranch)
return revs, revs[0]
def _isfile(path):
try:
# we use os.stat() directly here instead of os.path.isfile()
# because the latter started returning `False` on invalid path
# exceptions starting in 3.8 and we care about handling
# invalid paths specially here.
st = os.stat(path)
except ValueError as e:
msg = stringutil.forcebytestr(e)
raise error.Abort(_(b'invalid path %s: %s') % (path, msg))
except OSError:
return False
else:
return stat.S_ISREG(st.st_mode)
class LocalFactory:
"""thin wrapper to dispatch between localrepo and bundle repo"""
@staticmethod
def islocal(path: bytes) -> bool:
path = util.expandpath(urlutil.urllocalpath(path))
return not _isfile(path)
@staticmethod
def instance(ui, path, *args, **kwargs):
path = util.expandpath(urlutil.urllocalpath(path))
if _isfile(path):
cls = bundlerepo
else:
cls = localrepo
return cls.instance(ui, path, *args, **kwargs)
repo_schemes = {
b'bundle': bundlerepo,
b'union': unionrepo,
b'file': LocalFactory,
}
peer_schemes = {
b'http': httppeer,
b'https': httppeer,
b'ssh': sshpeer,
b'static-http': statichttprepo,
}
def islocal(repo):
'''return true if repo (or path pointing to repo) is local'''
if isinstance(repo, bytes):
u = urlutil.url(repo)
scheme = u.scheme or b'file'
if scheme in peer_schemes:
cls = peer_schemes[scheme]
cls.make_peer # make sure we load the module
elif scheme in repo_schemes:
cls = repo_schemes[scheme]
cls.instance # make sure we load the module
else:
cls = LocalFactory
if hasattr(cls, 'islocal'):
return cls.islocal(repo) # pytype: disable=module-attr
return False
repo.ui.deprecwarn(b"use obj.local() instead of islocal(obj)", b"6.4")
return repo.local()
def openpath(ui, path, sendaccept=True):
'''open path with open if local, url.open if remote'''
pathurl = urlutil.url(path, parsequery=False, parsefragment=False)
if pathurl.islocal():
return util.posixfile(pathurl.localpath(), b'rb')
else:
return url.open(ui, path, sendaccept=sendaccept)
# a list of (ui, repo) functions called for wire peer initialization
wirepeersetupfuncs = []
def _setup_repo_or_peer(ui, obj, presetupfuncs=None):
ui = getattr(obj, "ui", ui)
for f in presetupfuncs or []:
f(ui, obj)
ui.log(b'extension', b'- executing reposetup hooks\n')
with util.timedcm('all reposetup') as allreposetupstats:
for name, module in extensions.extensions(ui):
ui.log(b'extension', b' - running reposetup for %s\n', name)
hook = getattr(module, 'reposetup', None)
if hook:
with util.timedcm('reposetup %r', name) as stats:
hook(ui, obj)
msg = b' > reposetup for %s took %s\n'
ui.log(b'extension', msg, name, stats)
ui.log(b'extension', b'> all reposetup took %s\n', allreposetupstats)
if not obj.local():
for f in wirepeersetupfuncs:
f(ui, obj)
def repository(
ui,
path=b'',
create=False,
presetupfuncs=None,
intents=None,
createopts=None,
):
"""return a repository object for the specified path"""
scheme = urlutil.url(path).scheme
if scheme is None:
scheme = b'file'
cls = repo_schemes.get(scheme)
if cls is None:
if scheme in peer_schemes:
raise error.Abort(_(b"repository '%s' is not local") % path)
cls = LocalFactory
repo = cls.instance(
ui,
path,
create,
intents=intents,
createopts=createopts,
)
_setup_repo_or_peer(ui, repo, presetupfuncs=presetupfuncs)
return repo.filtered(b'visible')
def peer(
uiorrepo,
opts,
path,
create=False,
intents=None,
createopts=None,
remotehidden=False,
):
'''return a repository peer for the specified path'''
ui = getattr(uiorrepo, 'ui', uiorrepo)
rui = remoteui(uiorrepo, opts)
if hasattr(path, 'url'):
# this is already a urlutil.path object
peer_path = path
else:
peer_path = urlutil.path(ui, None, rawloc=path, validate_path=False)
scheme = peer_path.url.scheme # pytype: disable=attribute-error
if scheme in peer_schemes:
cls = peer_schemes[scheme]
peer = cls.make_peer(
rui,
peer_path,
create,
intents=intents,
createopts=createopts,
remotehidden=remotehidden,
)
_setup_repo_or_peer(rui, peer)
else:
# this is a repository
repo_path = peer_path.loc # pytype: disable=attribute-error
if not repo_path:
repo_path = peer_path.rawloc # pytype: disable=attribute-error
repo = repository(
rui,
repo_path,
create,
intents=intents,
createopts=createopts,
)
peer = repo.peer(path=peer_path, remotehidden=remotehidden)
return peer
def defaultdest(source):
"""return default destination of clone if none is given
>>> defaultdest(b'foo')
'foo'
>>> defaultdest(b'/foo/bar')
'bar'
>>> defaultdest(b'/')
''
>>> defaultdest(b'')
''
>>> defaultdest(b'http://example.org/')
''
>>> defaultdest(b'http://example.org/foo/')
'foo'
"""
path = urlutil.url(source).path
if not path:
return b''
return os.path.basename(os.path.normpath(path))
def sharedreposource(repo):
"""Returns repository object for source repository of a shared repo.
If repo is not a shared repository, returns None.
"""
if repo.sharedpath == repo.path:
return None
if hasattr(repo, 'srcrepo') and repo.srcrepo:
return repo.srcrepo
# the sharedpath always ends in the .hg; we want the path to the repo
source = repo.vfs.split(repo.sharedpath)[0]
srcurl, branches = urlutil.parseurl(source)
srcrepo = repository(repo.ui, srcurl)
repo.srcrepo = srcrepo
return srcrepo
def share(
ui,
source,
dest=None,
update=True,
bookmarks=True,
defaultpath=None,
relative=False,
):
'''create a shared repository'''
not_local_msg = _(b'can only share local repositories')
if hasattr(source, 'local'):
if source.local() is None:
raise error.Abort(not_local_msg)
elif not islocal(source):
# XXX why are we getting bytes here ?
raise error.Abort(not_local_msg)
if not dest:
dest = defaultdest(source)
else:
dest = urlutil.get_clone_path_obj(ui, dest).loc
if isinstance(source, bytes):
source_path = urlutil.get_clone_path_obj(ui, source)
srcrepo = repository(ui, source_path.loc)
branches = (source_path.branch, [])
rev, checkout = addbranchrevs(srcrepo, srcrepo, branches, None)
else:
srcrepo = source.local()
checkout = None
shareditems = set()
if bookmarks:
shareditems.add(sharedbookmarks)
r = repository(
ui,
dest,
create=True,
createopts={
b'sharedrepo': srcrepo,
b'sharedrelative': relative,
b'shareditems': shareditems,
},
)
postshare(srcrepo, r, defaultpath=defaultpath)
r = repository(ui, dest)
_postshareupdate(r, update, checkout=checkout)
return r
def _prependsourcehgrc(repo):
"""copies the source repo config and prepend it in current repo .hg/hgrc
on unshare. This is only done if the share was perfomed using share safe
method where we share config of source in shares"""
srcvfs = vfsmod.vfs(repo.sharedpath)
dstvfs = vfsmod.vfs(repo.path)
if not srcvfs.exists(b'hgrc'):
return
currentconfig = b''
if dstvfs.exists(b'hgrc'):
currentconfig = dstvfs.read(b'hgrc')
with dstvfs(b'hgrc', b'wb') as fp:
sourceconfig = srcvfs.read(b'hgrc')
fp.write(b"# Config copied from shared source\n")
fp.write(sourceconfig)
fp.write(b'\n')
fp.write(currentconfig)
def unshare(ui, repo):
"""convert a shared repository to a normal one
Copy the store data to the repo and remove the sharedpath data.
Returns a new repository object representing the unshared repository.
The passed repository object is not usable after this function is
called.
"""
with repo.lock():
# we use locks here because if we race with commit, we
# can end up with extra data in the cloned revlogs that's
# not pointed to by changesets, thus causing verify to
# fail
destlock = copystore(ui, repo, repo.path)
with destlock or util.nullcontextmanager():
if requirements.SHARESAFE_REQUIREMENT in repo.requirements:
# we were sharing .hg/hgrc of the share source with the current
# repo. We need to copy that while unsharing otherwise it can
# disable hooks and other checks
_prependsourcehgrc(repo)
sharefile = repo.vfs.join(b'sharedpath')
util.rename(sharefile, sharefile + b'.old')
repo.requirements.discard(requirements.SHARED_REQUIREMENT)
repo.requirements.discard(requirements.RELATIVE_SHARED_REQUIREMENT)
scmutil.writereporequirements(repo)
# Removing share changes some fundamental properties of the repo instance.
# So we instantiate a new repo object and operate on it rather than
# try to keep the existing repo usable.
newrepo = repository(repo.baseui, repo.root, create=False)
# TODO: figure out how to access subrepos that exist, but were previously
# removed from .hgsub
c = newrepo[b'.']
subs = c.substate
for s in sorted(subs):
c.sub(s).unshare()
localrepo.poisonrepository(repo)
return newrepo
def postshare(sourcerepo, destrepo, defaultpath=None):
"""Called after a new shared repo is created.
The new repo only has a requirements file and pointer to the source.
This function configures additional shared data.
Extensions can wrap this function and write additional entries to
destrepo/.hg/shared to indicate additional pieces of data to be shared.
"""
default = defaultpath or sourcerepo.ui.config(b'paths', b'default')
if default:
template = b'[paths]\ndefault = %s\n'
destrepo.vfs.write(b'hgrc', util.tonativeeol(template % default))
if requirements.NARROW_REQUIREMENT in sourcerepo.requirements:
with destrepo.wlock(), destrepo.lock(), destrepo.transaction(
b"narrow-share"
):
narrowspec.copytoworkingcopy(destrepo)
def _postshareupdate(repo, update, checkout=None):
"""Maybe perform a working directory update after a shared repo is created.
``update`` can be a boolean or a revision to update to.
"""
if not update:
return
repo.ui.status(_(b"updating working directory\n"))
if update is not True:
checkout = update
for test in (checkout, b'default', b'tip'):
if test is None:
continue
try:
uprev = repo.lookup(test)
break
except error.RepoLookupError:
continue
_update(repo, uprev)
def copystore(ui, srcrepo, destpath):
"""copy files from store of srcrepo in destpath
returns destlock
"""
destlock = None
try:
hardlink = None
topic = _(b'linking') if hardlink else _(b'copying')
with ui.makeprogress(topic, unit=_(b'files')) as progress:
num = 0
srcpublishing = srcrepo.publishing()
srcvfs = vfsmod.vfs(srcrepo.sharedpath)
dstvfs = vfsmod.vfs(destpath)
for f in srcrepo.store.copylist():
if srcpublishing and f.endswith(b'phaseroots'):
continue
dstbase = os.path.dirname(f)
if dstbase and not dstvfs.exists(dstbase):
dstvfs.mkdir(dstbase)
if srcvfs.exists(f):
if f.endswith(b'data'):
# 'dstbase' may be empty (e.g. revlog format 0)
lockfile = os.path.join(dstbase, b"lock")
# lock to avoid premature writing to the target
destlock = lock.lock(dstvfs, lockfile)
hardlink, n = util.copyfiles(
srcvfs.join(f), dstvfs.join(f), hardlink, progress
)
num += n
if hardlink:
ui.debug(b"linked %d files\n" % num)
else:
ui.debug(b"copied %d files\n" % num)
return destlock
except: # re-raises
release(destlock)
raise
def clonewithshare(
ui,
peeropts,
sharepath,
source,
srcpeer,
dest,
pull=False,
rev=None,
update=True,
stream=False,
):
"""Perform a clone using a shared repo.
The store for the repository will be located at <sharepath>/.hg. The
specified revisions will be cloned or pulled from "source". A shared repo
will be created at "dest" and a working copy will be created if "update" is
True.
"""
revs = None
if rev:
if not srcpeer.capable(b'lookup'):
raise error.Abort(
_(
b"src repository does not support "
b"revision lookup and so doesn't "
b"support clone by revision"
)
)
# TODO this is batchable.
remoterevs = []
for r in rev:
with srcpeer.commandexecutor() as e:
remoterevs.append(
e.callcommand(
b'lookup',
{
b'key': r,
},
).result()
)
revs = remoterevs
# Obtain a lock before checking for or cloning the pooled repo otherwise
# 2 clients may race creating or populating it.
pooldir = os.path.dirname(sharepath)
# lock class requires the directory to exist.
try:
util.makedir(pooldir, False)
except FileExistsError:
pass
poolvfs = vfsmod.vfs(pooldir)
basename = os.path.basename(sharepath)
with lock.lock(poolvfs, b'%s.lock' % basename):
if os.path.exists(sharepath):
ui.status(
_(b'(sharing from existing pooled repository %s)\n') % basename
)
else:
ui.status(
_(b'(sharing from new pooled repository %s)\n') % basename
)
# Always use pull mode because hardlinks in share mode don't work
# well. Never update because working copies aren't necessary in
# share mode.
clone(
ui,
peeropts,
source,
dest=sharepath,
pull=True,
revs=rev,
update=False,
stream=stream,
)
# Resolve the value to put in [paths] section for the source.
if islocal(source):
defaultpath = util.abspath(urlutil.urllocalpath(source))
else:
defaultpath = source
sharerepo = repository(ui, path=sharepath)
destrepo = share(
ui,
sharerepo,
dest=dest,
update=False,
bookmarks=False,
defaultpath=defaultpath,
)
# We need to perform a pull against the dest repo to fetch bookmarks
# and other non-store data that isn't shared by default. In the case of
# non-existing shared repo, this means we pull from the remote twice. This
# is a bit weird. But at the time it was implemented, there wasn't an easy
# way to pull just non-changegroup data.
exchange.pull(destrepo, srcpeer, heads=revs)
_postshareupdate(destrepo, update)
return srcpeer, peer(ui, peeropts, dest)
# Recomputing caches is often slow on big repos, so copy them.
def _copycache(srcrepo, dstcachedir, fname):
"""copy a cache from srcrepo to destcachedir (if it exists)"""
srcfname = srcrepo.cachevfs.join(fname)
dstfname = os.path.join(dstcachedir, fname)
if os.path.exists(srcfname):
if not os.path.exists(dstcachedir):
os.mkdir(dstcachedir)
util.copyfile(srcfname, dstfname)
def clone(
ui,
peeropts,
source,
dest=None,
pull=False,
revs=None,
update=True,
stream=False,
branch=None,
shareopts=None,
storeincludepats=None,
storeexcludepats=None,
depth=None,
):
"""Make a copy of an existing repository.
Create a copy of an existing repository in a new directory. The
source and destination are URLs, as passed to the repository
function. Returns a pair of repository peers, the source and
newly created destination.
The location of the source is added to the new repository's
.hg/hgrc file, as the default to be used for future pulls and
pushes.
If an exception is raised, the partly cloned/updated destination
repository will be deleted.
Arguments:
source: repository object or URL
dest: URL of destination repository to create (defaults to base
name of source repository)
pull: always pull from source repository, even in local case or if the
server prefers streaming
stream: stream raw data uncompressed from repository (fast over
LAN, slow over WAN)
revs: revision to clone up to (implies pull=True)
update: update working directory after clone completes, if
destination is local repository (True means update to default rev,
anything else is treated as a revision)
branch: branches to clone
shareopts: dict of options to control auto sharing behavior. The "pool" key
activates auto sharing mode and defines the directory for stores. The
"mode" key determines how to construct the directory name of the shared
repository. "identity" means the name is derived from the node of the first
changeset in the repository. "remote" means the name is derived from the
remote's path/URL. Defaults to "identity."
storeincludepats and storeexcludepats: sets of file patterns to include and
exclude in the repository copy, respectively. If not defined, all files
will be included (a "full" clone). Otherwise a "narrow" clone containing
only the requested files will be performed. If ``storeincludepats`` is not
defined but ``storeexcludepats`` is, ``storeincludepats`` is assumed to be
``path:.``. If both are empty sets, no files will be cloned.
"""
if isinstance(source, bytes):
src_path = urlutil.get_clone_path_obj(ui, source)
if src_path is None:
srcpeer = peer(ui, peeropts, b'')
origsource = source = b''
branches = (None, branch or [])
else:
srcpeer = peer(ui, peeropts, src_path)
origsource = src_path.rawloc
branches = (src_path.branch, branch or [])
source = src_path.loc
else:
if hasattr(source, 'peer'):
srcpeer = source.peer() # in case we were called with a localrepo
else:
srcpeer = source
branches = (None, branch or [])
# XXX path: simply use the peer `path` object when this become available
origsource = source = srcpeer.url()
srclock = destlock = destwlock = cleandir = None
destpeer = None
try:
revs, checkout = addbranchrevs(srcpeer, srcpeer, branches, revs)
if dest is None:
dest = defaultdest(source)
if dest:
ui.status(_(b"destination directory: %s\n") % dest)
else:
dest_path = urlutil.get_clone_path_obj(ui, dest)
if dest_path is not None:
dest = dest_path.rawloc
else:
dest = b''
dest = urlutil.urllocalpath(dest)
source = urlutil.urllocalpath(source)
if not dest:
raise error.InputError(_(b"empty destination path is not valid"))
destvfs = vfsmod.vfs(dest, expandpath=True)
if destvfs.lexists():
if not destvfs.isdir():
raise error.InputError(
_(b"destination '%s' already exists") % dest
)
elif destvfs.listdir():
raise error.InputError(
_(b"destination '%s' is not empty") % dest
)
createopts = {}
narrow = False
if storeincludepats is not None:
narrowspec.validatepatterns(storeincludepats)
narrow = True
if storeexcludepats is not None:
narrowspec.validatepatterns(storeexcludepats)
narrow = True
if narrow:
# Include everything by default if only exclusion patterns defined.
if storeexcludepats and not storeincludepats:
storeincludepats = {b'path:.'}
createopts[b'narrowfiles'] = True
if depth:
createopts[b'shallowfilestore'] = True
if srcpeer.capable(b'lfs-serve'):
# Repository creation honors the config if it disabled the extension, so
# we can't just announce that lfs will be enabled. This check avoids
# saying that lfs will be enabled, and then saying it's an unknown
# feature. The lfs creation option is set in either case so that a
# requirement is added. If the extension is explicitly disabled but the
# requirement is set, the clone aborts early, before transferring any
# data.
createopts[b'lfs'] = True
if b'lfs' in extensions.disabled():
ui.status(
_(
b'(remote is using large file support (lfs), but it is '
b'explicitly disabled in the local configuration)\n'
)
)
else:
ui.status(
_(
b'(remote is using large file support (lfs); lfs will '
b'be enabled for this repository)\n'
)
)
shareopts = shareopts or {}
sharepool = shareopts.get(b'pool')
sharenamemode = shareopts.get(b'mode')
if sharepool and islocal(dest):
sharepath = None
if sharenamemode == b'identity':
# Resolve the name from the initial changeset in the remote
# repository. This returns nullid when the remote is empty. It
# raises RepoLookupError if revision 0 is filtered or otherwise
# not available. If we fail to resolve, sharing is not enabled.
try:
with srcpeer.commandexecutor() as e:
rootnode = e.callcommand(
b'lookup',
{
b'key': b'0',
},
).result()
if rootnode != sha1nodeconstants.nullid:
sharepath = os.path.join(sharepool, hex(rootnode))
else:
ui.status(
_(
b'(not using pooled storage: '
b'remote appears to be empty)\n'
)
)
except error.RepoLookupError:
ui.status(
_(
b'(not using pooled storage: '
b'unable to resolve identity of remote)\n'
)
)
elif sharenamemode == b'remote':
sharepath = os.path.join(
sharepool, hex(hashutil.sha1(source).digest())
)
else:
raise error.Abort(
_(b'unknown share naming mode: %s') % sharenamemode
)
# TODO this is a somewhat arbitrary restriction.
if narrow:
ui.status(
_(b'(pooled storage not supported for narrow clones)\n')
)
sharepath = None
if sharepath:
return clonewithshare(
ui,
peeropts,
sharepath,
source,
srcpeer,
dest,
pull=pull,
rev=revs,
update=update,
stream=stream,
)
srcrepo = srcpeer.local()
abspath = origsource
if islocal(origsource):
abspath = util.abspath(urlutil.urllocalpath(origsource))
if islocal(dest):
if os.path.exists(dest):
# only clean up directories we create ourselves
hgdir = os.path.realpath(os.path.join(dest, b".hg"))
cleandir = hgdir
else:
cleandir = dest
copy = False
if (
srcrepo
and srcrepo.cancopy()
and islocal(dest)
and not phases.hassecret(srcrepo)
):
copy = not pull and not revs
# TODO this is a somewhat arbitrary restriction.
if narrow:
copy = False
if copy:
try:
# we use a lock here because if we race with commit, we
# can end up with extra data in the cloned revlogs that's
# not pointed to by changesets, thus causing verify to
# fail
srclock = srcrepo.lock(wait=False)
except error.LockError:
copy = False
if copy:
srcrepo.hook(b'preoutgoing', throw=True, source=b'clone')
destrootpath = urlutil.urllocalpath(dest)
dest_reqs = localrepo.clone_requirements(ui, createopts, srcrepo)
localrepo.createrepository(
ui,
destrootpath,
requirements=dest_reqs,
)
destrepo = localrepo.makelocalrepository(ui, destrootpath)
destwlock = destrepo.wlock()
destlock = destrepo.lock()
from . import streamclone # avoid cycle
streamclone.local_copy(srcrepo, destrepo)
# we need to re-init the repo after manually copying the data
# into it
destpeer = peer(srcrepo, peeropts, dest)
# make the peer aware that is it already locked
#
# important:
#
# We still need to release that lock at the end of the function
destpeer.local()._lockref = weakref.ref(destlock)
destpeer.local()._wlockref = weakref.ref(destwlock)
# dirstate also needs to be copied because `_wlockref` has a reference
# to it: this dirstate is saved to disk when the wlock is released
destpeer.local().dirstate = destrepo.dirstate
srcrepo.hook(
b'outgoing', source=b'clone', node=srcrepo.nodeconstants.nullhex
)
else:
try:
# only pass ui when no srcrepo
destpeer = peer(
srcrepo or ui,
peeropts,
dest,
create=True,
createopts=createopts,
)
except FileExistsError:
cleandir = None
raise error.Abort(_(b"destination '%s' already exists") % dest)
if revs:
if not srcpeer.capable(b'lookup'):
raise error.Abort(
_(
b"src repository does not support "
b"revision lookup and so doesn't "
b"support clone by revision"
)
)
# TODO this is batchable.
remoterevs = []
for rev in revs:
with srcpeer.commandexecutor() as e:
remoterevs.append(
e.callcommand(
b'lookup',
{
b'key': rev,
},
).result()
)
revs = remoterevs
checkout = revs[0]
else:
revs = None
local = destpeer.local()
if local:
if narrow:
with local.wlock(), local.lock(), local.transaction(
b'narrow-clone'
):
local.setnarrowpats(storeincludepats, storeexcludepats)
narrowspec.copytoworkingcopy(local)
u = urlutil.url(abspath)
defaulturl = bytes(u)
local.ui.setconfig(b'paths', b'default', defaulturl, b'clone')
if not stream:
if pull:
stream = False
else:
stream = None
# internal config: ui.quietbookmarkmove
overrides = {(b'ui', b'quietbookmarkmove'): True}
with local.ui.configoverride(overrides, b'clone'):
exchange.pull(
local,
srcpeer,
heads=revs,
streamclonerequested=stream,
includepats=storeincludepats,
excludepats=storeexcludepats,
depth=depth,
)
elif srcrepo:
# TODO lift restriction once exchange.push() accepts narrow
# push.
if narrow:
raise error.Abort(
_(
b'narrow clone not available for '
b'remote destinations'
)
)
exchange.push(
srcrepo,
destpeer,
revs=revs,
bookmarks=srcrepo._bookmarks.keys(),
)
else:
raise error.Abort(
_(b"clone from remote to remote not supported")
)
cleandir = None
destrepo = destpeer.local()
if destrepo:
template = uimod.samplehgrcs[b'cloned']
u = urlutil.url(abspath)
u.passwd = None
defaulturl = bytes(u)
destrepo.vfs.write(b'hgrc', util.tonativeeol(template % defaulturl))
destrepo.ui.setconfig(b'paths', b'default', defaulturl, b'clone')
if ui.configbool(b'experimental', b'remotenames'):
logexchange.pullremotenames(destrepo, srcpeer)
if update:
if update is not True:
with srcpeer.commandexecutor() as e:
checkout = e.callcommand(
b'lookup',
{
b'key': update,
},
).result()
uprev = None
status = None
if checkout is not None:
# Some extensions (at least hg-git and hg-subversion) have
# a peer.lookup() implementation that returns a name instead
# of a nodeid. We work around it here until we've figured
# out a better solution.
if len(checkout) == 20 and checkout in destrepo:
uprev = checkout
elif scmutil.isrevsymbol(destrepo, checkout):
uprev = scmutil.revsymbol(destrepo, checkout).node()
else:
if update is not True:
try:
uprev = destrepo.lookup(update)
except error.RepoLookupError:
pass
if uprev is None:
try:
if destrepo._activebookmark:
uprev = destrepo.lookup(destrepo._activebookmark)
update = destrepo._activebookmark
else:
uprev = destrepo._bookmarks[b'@']
update = b'@'
bn = destrepo[uprev].branch()
if bn == b'default':
status = _(b"updating to bookmark %s\n" % update)
else:
status = (
_(b"updating to bookmark %s on branch %s\n")
) % (update, bn)
except KeyError:
try:
uprev = destrepo.branchtip(b'default')
except error.RepoLookupError:
uprev = destrepo.lookup(b'tip')
if not status:
bn = destrepo[uprev].branch()
status = _(b"updating to branch %s\n") % bn
destrepo.ui.status(status)
_update(destrepo, uprev)
if update in destrepo._bookmarks:
bookmarks.activate(destrepo, update)
if destlock is not None:
release(destlock)
if destwlock is not None:
release(destlock)
# here is a tiny windows were someone could end up writing the
# repository before the cache are sure to be warm. This is "fine"
# as the only "bad" outcome would be some slowness. That potential
# slowness already affect reader.
with destrepo.lock():
destrepo.updatecaches(caches=repositorymod.CACHES_POST_CLONE)
finally:
release(srclock, destlock, destwlock)
if cleandir is not None:
shutil.rmtree(cleandir, True)
if srcpeer is not None:
srcpeer.close()
if destpeer and destpeer.local() is None:
destpeer.close()
return srcpeer, destpeer
def _showstats(repo, stats, quietempty=False):
if quietempty and stats.isempty():
return
repo.ui.status(
_(
b"%d files updated, %d files merged, "
b"%d files removed, %d files unresolved\n"
)
% (
stats.updatedcount,
stats.mergedcount,
stats.removedcount,
stats.unresolvedcount,
)
)
def updaterepo(repo, node, overwrite, updatecheck=None):
"""Update the working directory to node.
When overwrite is set, changes are clobbered, merged else
returns stats (see pydoc mercurial.merge.applyupdates)"""
repo.ui.deprecwarn(
b'prefer merge.update() or merge.clean_update() over hg.updaterepo()',
b'5.7',
)
return mergemod._update(
repo,
node,
branchmerge=False,
force=overwrite,
labels=[b'working copy', b'destination'],
updatecheck=updatecheck,
)
def update(repo, node, quietempty=False, updatecheck=None):
"""update the working directory to node"""
stats = mergemod.update(repo[node], updatecheck=updatecheck)
_showstats(repo, stats, quietempty)
if stats.unresolvedcount:
repo.ui.status(_(b"use 'hg resolve' to retry unresolved file merges\n"))
return stats.unresolvedcount > 0
# naming conflict in clone()
_update = update
def clean(repo, node, show_stats=True, quietempty=False):
"""forcibly switch the working directory to node, clobbering changes"""
stats = mergemod.clean_update(repo[node])
assert stats.unresolvedcount == 0
if show_stats:
_showstats(repo, stats, quietempty)
return False
# naming conflict in updatetotally()
_clean = clean
_VALID_UPDATECHECKS = {
mergemod.UPDATECHECK_ABORT,
mergemod.UPDATECHECK_NONE,
mergemod.UPDATECHECK_LINEAR,
mergemod.UPDATECHECK_NO_CONFLICT,
}
def updatetotally(ui, repo, checkout, brev, clean=False, updatecheck=None):
"""Update the working directory with extra care for non-file components
This takes care of non-file components below:
:bookmark: might be advanced or (in)activated
This takes arguments below:
:checkout: to which revision the working directory is updated
:brev: a name, which might be a bookmark to be activated after updating
:clean: whether changes in the working directory can be discarded
:updatecheck: how to deal with a dirty working directory
Valid values for updatecheck are the UPDATECHECK_* constants
defined in the merge module. Passing `None` will result in using the
configured default.
* ABORT: abort if the working directory is dirty
* NONE: don't check (merge working directory changes into destination)
* LINEAR: check that update is linear before merging working directory
changes into destination
* NO_CONFLICT: check that the update does not result in file merges
This returns whether conflict is detected at updating or not.
"""
if updatecheck is None:
updatecheck = ui.config(b'commands', b'update.check')
if updatecheck not in _VALID_UPDATECHECKS:
# If not configured, or invalid value configured
updatecheck = mergemod.UPDATECHECK_LINEAR
if updatecheck not in _VALID_UPDATECHECKS:
raise ValueError(
r'Invalid updatecheck value %r (can accept %r)'
% (updatecheck, _VALID_UPDATECHECKS)
)
with repo.wlock():
movemarkfrom = None
warndest = False
if checkout is None:
updata = destutil.destupdate(repo, clean=clean)
checkout, movemarkfrom, brev = updata
warndest = True
if clean:
ret = _clean(repo, checkout)
else:
if updatecheck == mergemod.UPDATECHECK_ABORT:
cmdutil.bailifchanged(repo, merge=False)
updatecheck = mergemod.UPDATECHECK_NONE
ret = _update(repo, checkout, updatecheck=updatecheck)
if not ret and movemarkfrom:
if movemarkfrom == repo[b'.'].node():
pass # no-op update
elif bookmarks.update(repo, [movemarkfrom], repo[b'.'].node()):
b = ui.label(repo._activebookmark, b'bookmarks.active')
ui.status(_(b"updating bookmark %s\n") % b)
else:
# this can happen with a non-linear update
b = ui.label(repo._activebookmark, b'bookmarks')
ui.status(_(b"(leaving bookmark %s)\n") % b)
bookmarks.deactivate(repo)
elif brev in repo._bookmarks:
if brev != repo._activebookmark:
b = ui.label(brev, b'bookmarks.active')
ui.status(_(b"(activating bookmark %s)\n") % b)
bookmarks.activate(repo, brev)
elif brev:
if repo._activebookmark:
b = ui.label(repo._activebookmark, b'bookmarks')
ui.status(_(b"(leaving bookmark %s)\n") % b)
bookmarks.deactivate(repo)
if warndest:
destutil.statusotherdests(ui, repo)
return ret
def merge(
ctx,
force=False,
remind=True,
labels=None,
):
"""Branch merge with node, resolving changes. Return true if any
unresolved conflicts."""
repo = ctx.repo()
stats = mergemod.merge(ctx, force=force, labels=labels)
_showstats(repo, stats)
if stats.unresolvedcount:
repo.ui.status(
_(
b"use 'hg resolve' to retry unresolved file merges "
b"or 'hg merge --abort' to abandon\n"
)
)
elif remind:
repo.ui.status(_(b"(branch merge, don't forget to commit)\n"))
return stats.unresolvedcount > 0
def abortmerge(ui, repo):
ms = mergestatemod.mergestate.read(repo)
if ms.active():
# there were conflicts
node = ms.localctx.hex()
else:
# there were no conficts, mergestate was not stored
node = repo[b'.'].hex()
repo.ui.status(_(b"aborting the merge, updating back to %s\n") % node[:12])
stats = mergemod.clean_update(repo[node])
assert stats.unresolvedcount == 0
_showstats(repo, stats)
def _incoming(
displaychlist,
subreporecurse,
ui,
repo,
source,
opts,
buffered=False,
subpath=None,
):
"""
Helper for incoming / gincoming.
displaychlist gets called with
(remoterepo, incomingchangesetlist, displayer) parameters,
and is supposed to contain only code that can't be unified.
"""
srcs = urlutil.get_pull_paths(repo, ui, [source])
srcs = list(srcs)
if len(srcs) != 1:
msg = _(b'for now, incoming supports only a single source, %d provided')
msg %= len(srcs)
raise error.Abort(msg)
path = srcs[0]
if subpath is None:
peer_path = path
url = path.loc
else:
# XXX path: we are losing the `path` object here. Keeping it would be
# valuable. For example as a "variant" as we do for pushes.
subpath = urlutil.url(subpath)
if subpath.isabs():
peer_path = url = bytes(subpath)
else:
p = urlutil.url(path.loc)
if p.islocal():
normpath = os.path.normpath
else:
normpath = posixpath.normpath
p.path = normpath(b'%s/%s' % (p.path, subpath))
peer_path = url = bytes(p)
other = peer(repo, opts, peer_path)
cleanupfn = other.close
try:
ui.status(_(b'comparing with %s\n') % urlutil.hidepassword(url))
branches = (path.branch, opts.get(b'branch', []))
revs, checkout = addbranchrevs(repo, other, branches, opts.get(b'rev'))
if revs:
revs = [other.lookup(rev) for rev in revs]
other, chlist, cleanupfn = bundlerepo.getremotechanges(
ui, repo, other, revs, opts.get(b"bundle"), opts.get(b"force")
)
if not chlist:
ui.status(_(b"no changes found\n"))
return subreporecurse()
ui.pager(b'incoming')
displayer = logcmdutil.changesetdisplayer(
ui, other, opts, buffered=buffered
)
displaychlist(other, chlist, displayer)
displayer.close()
finally:
cleanupfn()
subreporecurse()
return 0 # exit code is zero since we found incoming changes
def incoming(ui, repo, source, opts, subpath=None):
def subreporecurse():
ret = 1
if opts.get(b'subrepos'):
ctx = repo[None]
for subpath in sorted(ctx.substate):
sub = ctx.sub(subpath)
ret = min(ret, sub.incoming(ui, source, opts))
return ret
def display(other, chlist, displayer):
limit = logcmdutil.getlimit(opts)
if opts.get(b'newest_first'):
chlist.reverse()
count = 0
for n in chlist:
if limit is not None and count >= limit:
break
parents = [
p for p in other.changelog.parents(n) if p != repo.nullid
]
if opts.get(b'no_merges') and len(parents) == 2:
continue
count += 1
displayer.show(other[n])
return _incoming(
display, subreporecurse, ui, repo, source, opts, subpath=subpath
)
def _outgoing(ui, repo, dests, opts, subpath=None):
out = set()
others = []
for path in urlutil.get_push_paths(repo, ui, dests):
dest = path.loc
if subpath is not None:
subpath = urlutil.url(subpath)
if subpath.isabs():
dest = bytes(subpath)
else:
p = urlutil.url(dest)
if p.islocal():
normpath = os.path.normpath
else:
normpath = posixpath.normpath
p.path = normpath(b'%s/%s' % (p.path, subpath))
dest = bytes(p)
branches = path.branch, opts.get(b'branch') or []
ui.status(_(b'comparing with %s\n') % urlutil.hidepassword(dest))
revs, checkout = addbranchrevs(repo, repo, branches, opts.get(b'rev'))
if revs:
revs = [repo[rev].node() for rev in logcmdutil.revrange(repo, revs)]
other = peer(repo, opts, dest)
try:
outgoing = discovery.findcommonoutgoing(
repo, other, revs, force=opts.get(b'force')
)
o = outgoing.missing
out.update(o)
if not o:
scmutil.nochangesfound(repo.ui, repo, outgoing.excluded)
others.append(other)
except: # re-raises
other.close()
raise
# make sure this is ordered by revision number
outgoing_revs = list(out)
cl = repo.changelog
outgoing_revs.sort(key=cl.rev)
return outgoing_revs, others
def _outgoing_recurse(ui, repo, dests, opts):
ret = 1
if opts.get(b'subrepos'):
ctx = repo[None]
for subpath in sorted(ctx.substate):
sub = ctx.sub(subpath)
ret = min(ret, sub.outgoing(ui, dests, opts))
return ret
def _outgoing_filter(repo, revs, opts):
"""apply revision filtering/ordering option for outgoing"""
limit = logcmdutil.getlimit(opts)
no_merges = opts.get(b'no_merges')
if opts.get(b'newest_first'):
revs.reverse()
if limit is None and not no_merges:
for r in revs:
yield r
return
count = 0
cl = repo.changelog
for n in revs:
if limit is not None and count >= limit:
break
parents = [p for p in cl.parents(n) if p != repo.nullid]
if no_merges and len(parents) == 2:
continue
count += 1
yield n
def outgoing(ui, repo, dests, opts, subpath=None):
if opts.get(b'graph'):
logcmdutil.checkunsupportedgraphflags([], opts)
o, others = _outgoing(ui, repo, dests, opts, subpath=subpath)
ret = 1
try:
if o:
ret = 0
if opts.get(b'graph'):
revdag = logcmdutil.graphrevs(repo, o, opts)
ui.pager(b'outgoing')
displayer = logcmdutil.changesetdisplayer(
ui, repo, opts, buffered=True
)
logcmdutil.displaygraph(
ui, repo, revdag, displayer, graphmod.asciiedges
)
else:
ui.pager(b'outgoing')
displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
for n in _outgoing_filter(repo, o, opts):
displayer.show(repo[n])
displayer.close()
for oth in others:
cmdutil.outgoinghooks(ui, repo, oth, opts, o)
ret = min(ret, _outgoing_recurse(ui, repo, dests, opts))
return ret # exit code is zero since we found outgoing changes
finally:
for oth in others:
oth.close()
def verify(repo, level=None):
"""verify the consistency of a repository"""
ret = verifymod.verify(repo, level=level)
# Broken subrepo references in hidden csets don't seem worth worrying about,
# since they can't be pushed/pulled, and --hidden can be used if they are a
# concern.
# pathto() is needed for -R case
revs = repo.revs(
b"filelog(%s)", util.pathto(repo.root, repo.getcwd(), b'.hgsubstate')
)
if revs:
repo.ui.status(_(b'checking subrepo links\n'))
for rev in revs:
ctx = repo[rev]
try:
for subpath in ctx.substate:
try:
ret = (
ctx.sub(subpath, allowcreate=False).verify() or ret
)
except error.RepoError as e:
repo.ui.warn(b'%d: %s\n' % (rev, e))
except Exception:
repo.ui.warn(
_(b'.hgsubstate is corrupt in revision %s\n')
% short(ctx.node())
)
return ret
def remoteui(src, opts):
"""build a remote ui from ui or repo and opts"""
if hasattr(src, 'baseui'): # looks like a repository
dst = src.baseui.copy() # drop repo-specific config
src = src.ui # copy target options from repo
else: # assume it's a global ui object
dst = src.copy() # keep all global options
# copy ssh-specific options
for o in b'ssh', b'remotecmd':
v = opts.get(o) or src.config(b'ui', o)
if v:
dst.setconfig(b"ui", o, v, b'copied')
# copy bundle-specific options
r = src.config(b'bundle', b'mainreporoot')
if r:
dst.setconfig(b'bundle', b'mainreporoot', r, b'copied')
# copy selected local settings to the remote ui
for sect in (b'auth', b'hostfingerprints', b'hostsecurity', b'http_proxy'):
for key, val in src.configitems(sect):
dst.setconfig(sect, key, val, b'copied')
v = src.config(b'web', b'cacerts')
if v:
dst.setconfig(b'web', b'cacerts', util.expandpath(v), b'copied')
return dst
# Files of interest
# Used to check if the repository has changed looking at mtime and size of
# these files.
foi = [
('spath', b'00changelog.i'),
('spath', b'phaseroots'), # ! phase can change content at the same size
('spath', b'obsstore'),
('path', b'bookmarks'), # ! bookmark can change content at the same size
]
class cachedlocalrepo:
"""Holds a localrepository that can be cached and reused."""
def __init__(self, repo):
"""Create a new cached repo from an existing repo.
We assume the passed in repo was recently created. If the
repo has changed between when it was created and when it was
turned into a cache, it may not refresh properly.
"""
assert isinstance(repo, localrepo.localrepository)
self._repo = repo
self._state, self.mtime = self._repostate()
self._filtername = repo.filtername
def fetch(self):
"""Refresh (if necessary) and return a repository.
If the cached instance is out of date, it will be recreated
automatically and returned.
Returns a tuple of the repo and a boolean indicating whether a new
repo instance was created.
"""
# We compare the mtimes and sizes of some well-known files to
# determine if the repo changed. This is not precise, as mtimes
# are susceptible to clock skew and imprecise filesystems and
# file content can change while maintaining the same size.
state, mtime = self._repostate()
if state == self._state:
return self._repo, False
repo = repository(self._repo.baseui, self._repo.url())
if self._filtername:
self._repo = repo.filtered(self._filtername)
else:
self._repo = repo.unfiltered()
self._state = state
self.mtime = mtime
return self._repo, True
def _repostate(self):
state = []
maxmtime = -1
for attr, fname in foi:
prefix = getattr(self._repo, attr)
p = os.path.join(prefix, fname)
try:
st = os.stat(p)
except OSError:
st = os.stat(prefix)
state.append((st[stat.ST_MTIME], st.st_size))
maxmtime = max(maxmtime, st[stat.ST_MTIME])
return tuple(state), maxmtime
def copy(self):
"""Obtain a copy of this class instance.
A new localrepository instance is obtained. The new instance should be
completely independent of the original.
"""
repo = repository(self._repo.baseui, self._repo.origroot)
if self._filtername:
repo = repo.filtered(self._filtername)
else:
repo = repo.unfiltered()
c = cachedlocalrepo(repo)
c._state = self._state
c.mtime = self.mtime
return c