# exchange.py - utility to exchange data between repos.
#
# Copyright 2005-2007 Olivia Mackall <olivia@selenic.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 collections
import weakref
from .i18n import _
from .node import (
hex,
nullrev,
)
from . import (
bookmarks as bookmod,
bundle2,
bundlecaches,
changegroup,
discovery,
error,
lock as lockmod,
logexchange,
narrowspec,
obsolete,
obsutil,
phases,
pushkey,
pycompat,
requirements,
scmutil,
streamclone,
url as urlmod,
util,
wireprototypes,
)
from .utils import (
hashutil,
stringutil,
urlutil,
)
from .interfaces import repository
urlerr = util.urlerr
urlreq = util.urlreq
_NARROWACL_SECTION = b'narrowacl'
def readbundle(ui, fh, fname, vfs=None):
header = changegroup.readexactly(fh, 4)
alg = None
if not fname:
fname = b"stream"
if not header.startswith(b'HG') and header.startswith(b'\0'):
fh = changegroup.headerlessfixup(fh, header)
header = b"HG10"
alg = b'UN'
elif vfs:
fname = vfs.join(fname)
magic, version = header[0:2], header[2:4]
if magic != b'HG':
raise error.Abort(_(b'%s: not a Mercurial bundle') % fname)
if version == b'10':
if alg is None:
alg = changegroup.readexactly(fh, 2)
return changegroup.cg1unpacker(fh, alg)
elif version.startswith(b'2'):
return bundle2.getunbundler(ui, fh, magicstring=magic + version)
elif version == b'S1':
return streamclone.streamcloneapplier(fh)
else:
raise error.Abort(
_(b'%s: unknown bundle version %s') % (fname, version)
)
def _format_params(params):
parts = []
for key, value in sorted(params.items()):
value = urlreq.quote(value)
parts.append(b"%s=%s" % (key, value))
return b';'.join(parts)
def getbundlespec(ui, fh):
"""Infer the bundlespec from a bundle file handle.
The input file handle is seeked and the original seek position is not
restored.
"""
def speccompression(alg):
try:
return util.compengines.forbundletype(alg).bundletype()[0]
except KeyError:
return None
params = {}
b = readbundle(ui, fh, None)
if isinstance(b, changegroup.cg1unpacker):
alg = b._type
if alg == b'_truncatedBZ':
alg = b'BZ'
comp = speccompression(alg)
if not comp:
raise error.Abort(_(b'unknown compression algorithm: %s') % alg)
return b'%s-v1' % comp
elif isinstance(b, bundle2.unbundle20):
if b'Compression' in b.params:
comp = speccompression(b.params[b'Compression'])
if not comp:
raise error.Abort(
_(b'unknown compression algorithm: %s') % comp
)
else:
comp = b'none'
version = None
for part in b.iterparts():
if part.type == b'changegroup':
cgversion = part.params[b'version']
if cgversion in (b'01', b'02'):
version = b'v2'
elif cgversion in (b'03',):
version = b'v2'
params[b'cg.version'] = cgversion
else:
raise error.Abort(
_(
b'changegroup version %s does not have '
b'a known bundlespec'
)
% version,
hint=_(b'try upgrading your Mercurial client'),
)
elif part.type == b'stream2' and version is None:
# A stream2 part requires to be part of a v2 bundle
requirements = urlreq.unquote(part.params[b'requirements'])
splitted = requirements.split()
params = bundle2._formatrequirementsparams(splitted)
return b'none-v2;stream=v2;%s' % params
elif part.type == b'stream3-exp' and version is None:
# A stream3 part requires to be part of a v2 bundle
requirements = urlreq.unquote(part.params[b'requirements'])
splitted = requirements.split()
params = bundle2._formatrequirementsparams(splitted)
return b'none-v2;stream=v3-exp;%s' % params
elif part.type == b'obsmarkers':
params[b'obsolescence'] = b'yes'
if not part.mandatory:
params[b'obsolescence-mandatory'] = b'no'
if not version:
raise error.Abort(
_(b'could not identify changegroup version in bundle')
)
spec = b'%s-%s' % (comp, version)
if params:
spec += b';'
spec += _format_params(params)
return spec
elif isinstance(b, streamclone.streamcloneapplier):
requirements = streamclone.readbundle1header(fh)[2]
formatted = bundle2._formatrequirementsparams(requirements)
return b'none-packed1;%s' % formatted
else:
raise error.Abort(_(b'unknown bundle type: %s') % b)
def _computeoutgoing(repo, heads, common):
"""Computes which revs are outgoing given a set of common
and a set of heads.
This is a separate function so extensions can have access to
the logic.
Returns a discovery.outgoing object.
"""
cl = repo.changelog
if common:
hasnode = cl.hasnode
common = [n for n in common if hasnode(n)]
else:
common = [repo.nullid]
if not heads:
heads = cl.heads()
return discovery.outgoing(repo, common, heads)
def _checkpublish(pushop):
repo = pushop.repo
ui = repo.ui
behavior = ui.config(b'experimental', b'auto-publish')
if pushop.publish or behavior not in (b'warn', b'confirm', b'abort'):
return
remotephases = listkeys(pushop.remote, b'phases')
if not remotephases.get(b'publishing', False):
return
if pushop.revs is None:
published = repo.filtered(b'served').revs(b'not public()')
else:
published = repo.revs(b'::%ln - public()', pushop.revs)
# we want to use pushop.revs in the revset even if they themselves are
# secret, but we don't want to have anything that the server won't see
# in the result of this expression
published &= repo.filtered(b'served')
if published:
if behavior == b'warn':
ui.warn(
_(b'%i changesets about to be published\n') % len(published)
)
elif behavior == b'confirm':
if ui.promptchoice(
_(b'push and publish %i changesets (yn)?$$ &Yes $$ &No')
% len(published)
):
raise error.CanceledError(_(b'user quit'))
elif behavior == b'abort':
msg = _(b'push would publish %i changesets') % len(published)
hint = _(
b"use --publish or adjust 'experimental.auto-publish'"
b" config"
)
raise error.Abort(msg, hint=hint)
def _forcebundle1(op):
"""return true if a pull/push must use bundle1
This function is used to allow testing of the older bundle version"""
ui = op.repo.ui
# The goal is this config is to allow developer to choose the bundle
# version used during exchanged. This is especially handy during test.
# Value is a list of bundle version to be picked from, highest version
# should be used.
#
# developer config: devel.legacy.exchange
exchange = ui.configlist(b'devel', b'legacy.exchange')
forcebundle1 = b'bundle2' not in exchange and b'bundle1' in exchange
return forcebundle1 or not op.remote.capable(b'bundle2')
class pushoperation:
"""A object that represent a single push operation
Its purpose is to carry push related state and very common operations.
A new pushoperation should be created at the beginning of each push and
discarded afterward.
"""
def __init__(
self,
repo,
remote,
force=False,
revs=None,
newbranch=False,
bookmarks=(),
publish=False,
pushvars=None,
):
# repo we push from
self.repo = repo
self.ui = repo.ui
# repo we push to
self.remote = remote
# force option provided
self.force = force
# revs to be pushed (None is "all")
self.revs = revs
# bookmark explicitly pushed
self.bookmarks = bookmarks
# allow push of new branch
self.newbranch = newbranch
# step already performed
# (used to check what steps have been already performed through bundle2)
self.stepsdone = set()
# Integer version of the changegroup push result
# - None means nothing to push
# - 0 means HTTP error
# - 1 means we pushed and remote head count is unchanged *or*
# we have outgoing changesets but refused to push
# - other values as described by addchangegroup()
self.cgresult = None
# Boolean value for the bookmark push
self.bkresult = None
# discover.outgoing object (contains common and outgoing data)
self.outgoing = None
# all remote topological heads before the push
self.remoteheads = None
# Details of the remote branch pre and post push
#
# mapping: {'branch': ([remoteheads],
# [newheads],
# [unsyncedheads],
# [discardedheads])}
# - branch: the branch name
# - remoteheads: the list of remote heads known locally
# None if the branch is new
# - newheads: the new remote heads (known locally) with outgoing pushed
# - unsyncedheads: the list of remote heads unknown locally.
# - discardedheads: the list of remote heads made obsolete by the push
self.pushbranchmap = None
# testable as a boolean indicating if any nodes are missing locally.
self.incoming = None
# summary of the remote phase situation
self.remotephases = None
# phases changes that must be pushed along side the changesets
self.outdatedphases = None
# phases changes that must be pushed if changeset push fails
self.fallbackoutdatedphases = None
# outgoing obsmarkers
self.outobsmarkers = set()
# outgoing bookmarks, list of (bm, oldnode | '', newnode | '')
self.outbookmarks = []
# transaction manager
self.trmanager = None
# map { pushkey partid -> callback handling failure}
# used to handle exception from mandatory pushkey part failure
self.pkfailcb = {}
# an iterable of pushvars or None
self.pushvars = pushvars
# publish pushed changesets
self.publish = publish
@util.propertycache
def futureheads(self):
"""future remote heads if the changeset push succeeds"""
return self.outgoing.ancestorsof
@util.propertycache
def fallbackheads(self):
"""future remote heads if the changeset push fails"""
if self.revs is None:
# not target to push, all common are relevant
return self.outgoing.commonheads
unfi = self.repo.unfiltered()
# I want cheads = heads(::ancestorsof and ::commonheads)
# (ancestorsof is revs with secret changeset filtered out)
#
# This can be expressed as:
# cheads = ( (ancestorsof and ::commonheads)
# + (commonheads and ::ancestorsof))"
# )
#
# while trying to push we already computed the following:
# common = (::commonheads)
# missing = ((commonheads::ancestorsof) - commonheads)
#
# We can pick:
# * ancestorsof part of common (::commonheads)
common = self.outgoing.common
rev = self.repo.changelog.index.rev
cheads = [node for node in self.revs if rev(node) in common]
# and
# * commonheads parents on missing
revset = unfi.set(
b'%ln and parents(roots(%ln))',
self.outgoing.commonheads,
self.outgoing.missing,
)
cheads.extend(c.node() for c in revset)
return cheads
@property
def commonheads(self):
"""set of all common heads after changeset bundle push"""
if self.cgresult:
return self.futureheads
else:
return self.fallbackheads
# mapping of message used when pushing bookmark
bookmsgmap = {
b'update': (
_(b"updating bookmark %s\n"),
_(b'updating bookmark %s failed\n'),
),
b'export': (
_(b"exporting bookmark %s\n"),
_(b'exporting bookmark %s failed\n'),
),
b'delete': (
_(b"deleting remote bookmark %s\n"),
_(b'deleting remote bookmark %s failed\n'),
),
}
def push(
repo,
remote,
force=False,
revs=None,
newbranch=False,
bookmarks=(),
publish=False,
opargs=None,
):
"""Push outgoing changesets (limited by revs) from a local
repository to remote. Return an integer:
- None means nothing to push
- 0 means HTTP error
- 1 means we pushed and remote head count is unchanged *or*
we have outgoing changesets but refused to push
- other values as described by addchangegroup()
"""
if opargs is None:
opargs = {}
pushop = pushoperation(
repo,
remote,
force,
revs,
newbranch,
bookmarks,
publish,
**pycompat.strkwargs(opargs)
)
if pushop.remote.local():
missing = (
set(pushop.repo.requirements) - pushop.remote.local().supported
)
if missing:
msg = _(
b"required features are not"
b" supported in the destination:"
b" %s"
) % (b', '.join(sorted(missing)))
raise error.Abort(msg)
if not pushop.remote.canpush():
raise error.Abort(_(b"destination does not support push"))
if not pushop.remote.capable(b'unbundle'):
raise error.Abort(
_(
b'cannot push: destination does not support the '
b'unbundle wire protocol command'
)
)
for category in sorted(bundle2.read_remote_wanted_sidedata(pushop.remote)):
# Check that a computer is registered for that category for at least
# one revlog kind.
for kind, computers in repo._sidedata_computers.items():
if computers.get(category):
break
else:
raise error.Abort(
_(
b'cannot push: required sidedata category not supported'
b" by this client: '%s'"
)
% pycompat.bytestr(category)
)
# get lock as we might write phase data
wlock = lock = None
try:
# bundle2 push may receive a reply bundle touching bookmarks
# requiring the wlock. Take it now to ensure proper ordering.
maypushback = pushop.ui.configbool(b'experimental', b'bundle2.pushback')
if (
(not _forcebundle1(pushop))
and maypushback
and not bookmod.bookmarksinstore(repo)
):
wlock = pushop.repo.wlock()
lock = pushop.repo.lock()
pushop.trmanager = transactionmanager(
pushop.repo, b'push-response', pushop.remote.url()
)
except error.LockUnavailable as err:
# source repo cannot be locked.
# We do not abort the push, but just disable the local phase
# synchronisation.
msg = b'cannot lock source repository: %s\n' % stringutil.forcebytestr(
err
)
pushop.ui.debug(msg)
with wlock or util.nullcontextmanager():
with lock or util.nullcontextmanager():
with pushop.trmanager or util.nullcontextmanager():
pushop.repo.checkpush(pushop)
_checkpublish(pushop)
_pushdiscovery(pushop)
if not pushop.force:
_checksubrepostate(pushop)
if not _forcebundle1(pushop):
_pushbundle2(pushop)
_pushchangeset(pushop)
_pushsyncphase(pushop)
_pushobsolete(pushop)
_pushbookmark(pushop)
if repo.ui.configbool(b'experimental', b'remotenames'):
logexchange.pullremotenames(repo, remote)
return pushop
# list of steps to perform discovery before push
pushdiscoveryorder = []
# Mapping between step name and function
#
# This exists to help extensions wrap steps if necessary
pushdiscoverymapping = {}
def pushdiscovery(stepname):
"""decorator for function performing discovery before push
The function is added to the step -> function mapping and appended to the
list of steps. Beware that decorated function will be added in order (this
may matter).
You can only use this decorator for a new step, if you want to wrap a step
from an extension, change the pushdiscovery dictionary directly."""
def dec(func):
assert stepname not in pushdiscoverymapping
pushdiscoverymapping[stepname] = func
pushdiscoveryorder.append(stepname)
return func
return dec
def _pushdiscovery(pushop):
"""Run all discovery steps"""
for stepname in pushdiscoveryorder:
step = pushdiscoverymapping[stepname]
step(pushop)
def _checksubrepostate(pushop):
"""Ensure all outgoing referenced subrepo revisions are present locally"""
repo = pushop.repo
# If the repository does not use subrepos, skip the expensive
# manifest checks.
if not len(repo.file(b'.hgsub')) or not len(repo.file(b'.hgsubstate')):
return
for n in pushop.outgoing.missing:
ctx = repo[n]
if b'.hgsub' in ctx.manifest() and b'.hgsubstate' in ctx.files():
for subpath in sorted(ctx.substate):
sub = ctx.sub(subpath)
sub.verify(onpush=True)
@pushdiscovery(b'changeset')
def _pushdiscoverychangeset(pushop):
"""discover the changeset that need to be pushed"""
fci = discovery.findcommonincoming
if pushop.revs:
commoninc = fci(
pushop.repo,
pushop.remote,
force=pushop.force,
ancestorsof=pushop.revs,
)
else:
commoninc = fci(pushop.repo, pushop.remote, force=pushop.force)
common, inc, remoteheads = commoninc
fco = discovery.findcommonoutgoing
outgoing = fco(
pushop.repo,
pushop.remote,
onlyheads=pushop.revs,
commoninc=commoninc,
force=pushop.force,
)
pushop.outgoing = outgoing
pushop.remoteheads = remoteheads
pushop.incoming = inc
@pushdiscovery(b'phase')
def _pushdiscoveryphase(pushop):
"""discover the phase that needs to be pushed
(computed for both success and failure case for changesets push)"""
outgoing = pushop.outgoing
unfi = pushop.repo.unfiltered()
remotephases = listkeys(pushop.remote, b'phases')
if (
pushop.ui.configbool(b'ui', b'_usedassubrepo')
and remotephases # server supports phases
and not pushop.outgoing.missing # no changesets to be pushed
and remotephases.get(b'publishing', False)
):
# When:
# - this is a subrepo push
# - and remote support phase
# - and no changeset are to be pushed
# - and remote is publishing
# We may be in issue 3781 case!
# We drop the possible phase synchronisation done by
# courtesy to publish changesets possibly locally draft
# on the remote.
pushop.outdatedphases = []
pushop.fallbackoutdatedphases = []
return
pushop.remotephases = phases.remotephasessummary(
pushop.repo, pushop.fallbackheads, remotephases
)
droots = pushop.remotephases.draftroots
extracond = b''
if not pushop.remotephases.publishing:
extracond = b' and public()'
revset = b'heads((%%ln::%%ln) %s)' % extracond
# Get the list of all revs draft on remote by public here.
# XXX Beware that revset break if droots is not strictly
# XXX root we may want to ensure it is but it is costly
fallback = list(unfi.set(revset, droots, pushop.fallbackheads))
if not pushop.remotephases.publishing and pushop.publish:
future = list(
unfi.set(
b'%ln and (not public() or %ln::)', pushop.futureheads, droots
)
)
elif not outgoing.missing:
future = fallback
else:
# adds changeset we are going to push as draft
#
# should not be necessary for publishing server, but because of an
# issue fixed in xxxxx we have to do it anyway.
fdroots = list(
unfi.set(b'roots(%ln + %ln::)', outgoing.missing, droots)
)
fdroots = [f.node() for f in fdroots]
future = list(unfi.set(revset, fdroots, pushop.futureheads))
pushop.outdatedphases = future
pushop.fallbackoutdatedphases = fallback
@pushdiscovery(b'obsmarker')
def _pushdiscoveryobsmarkers(pushop):
if not obsolete.isenabled(pushop.repo, obsolete.exchangeopt):
return
if not pushop.repo.obsstore:
return
if b'obsolete' not in listkeys(pushop.remote, b'namespaces'):
return
repo = pushop.repo
# very naive computation, that can be quite expensive on big repo.
# However: evolution is currently slow on them anyway.
nodes = (c.node() for c in repo.set(b'::%ln', pushop.futureheads))
pushop.outobsmarkers = pushop.repo.obsstore.relevantmarkers(nodes)
@pushdiscovery(b'bookmarks')
def _pushdiscoverybookmarks(pushop):
ui = pushop.ui
repo = pushop.repo.unfiltered()
remote = pushop.remote
ui.debug(b"checking for updated bookmarks\n")
ancestors = ()
if pushop.revs:
revnums = pycompat.maplist(repo.changelog.rev, pushop.revs)
ancestors = repo.changelog.ancestors(revnums, inclusive=True)
remotebookmark = bookmod.unhexlifybookmarks(listkeys(remote, b'bookmarks'))
explicit = {
repo._bookmarks.expandname(bookmark) for bookmark in pushop.bookmarks
}
comp = bookmod.comparebookmarks(repo, repo._bookmarks, remotebookmark)
return _processcompared(pushop, ancestors, explicit, remotebookmark, comp)
def _processcompared(pushop, pushed, explicit, remotebms, comp):
"""take decision on bookmarks to push to the remote repo
Exists to help extensions alter this behavior.
"""
addsrc, adddst, advsrc, advdst, diverge, differ, invalid, same = comp
repo = pushop.repo
for b, scid, dcid in advsrc:
if b in explicit:
explicit.remove(b)
if not pushed or repo[scid].rev() in pushed:
pushop.outbookmarks.append((b, dcid, scid))
# search added bookmark
for b, scid, dcid in addsrc:
if b in explicit:
explicit.remove(b)
if bookmod.isdivergent(b):
pushop.ui.warn(_(b'cannot push divergent bookmark %s!\n') % b)
pushop.bkresult = 2
else:
pushop.outbookmarks.append((b, b'', scid))
# search for overwritten bookmark
for b, scid, dcid in list(advdst) + list(diverge) + list(differ):
if b in explicit:
explicit.remove(b)
pushop.outbookmarks.append((b, dcid, scid))
# search for bookmark to delete
for b, scid, dcid in adddst:
if b in explicit:
explicit.remove(b)
# treat as "deleted locally"
pushop.outbookmarks.append((b, dcid, b''))
# identical bookmarks shouldn't get reported
for b, scid, dcid in same:
if b in explicit:
explicit.remove(b)
if explicit:
explicit = sorted(explicit)
# we should probably list all of them
pushop.ui.warn(
_(
b'bookmark %s does not exist on the local '
b'or remote repository!\n'
)
% explicit[0]
)
pushop.bkresult = 2
pushop.outbookmarks.sort()
def _pushcheckoutgoing(pushop):
outgoing = pushop.outgoing
unfi = pushop.repo.unfiltered()
if not outgoing.missing:
# nothing to push
scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
return False
# something to push
if not pushop.force:
# if repo.obsstore == False --> no obsolete
# then, save the iteration
if unfi.obsstore:
# this message are here for 80 char limit reason
mso = _(b"push includes obsolete changeset: %s!")
mspd = _(b"push includes phase-divergent changeset: %s!")
mscd = _(b"push includes content-divergent changeset: %s!")
mst = {
b"orphan": _(b"push includes orphan changeset: %s!"),
b"phase-divergent": mspd,
b"content-divergent": mscd,
}
# If we are to push if there is at least one
# obsolete or unstable changeset in missing, at
# least one of the missinghead will be obsolete or
# unstable. So checking heads only is ok
for node in outgoing.ancestorsof:
ctx = unfi[node]
if ctx.obsolete():
raise error.Abort(mso % ctx)
elif ctx.isunstable():
# TODO print more than one instability in the abort
# message
raise error.Abort(mst[ctx.instabilities()[0]] % ctx)
discovery.checkheads(pushop)
return True
# List of names of steps to perform for an outgoing bundle2, order matters.
b2partsgenorder = []
# Mapping between step name and function
#
# This exists to help extensions wrap steps if necessary
b2partsgenmapping = {}
def b2partsgenerator(stepname, idx=None):
"""decorator for function generating bundle2 part
The function is added to the step -> function mapping and appended to the
list of steps. Beware that decorated functions will be added in order
(this may matter).
You can only use this decorator for new steps, if you want to wrap a step
from an extension, attack the b2partsgenmapping dictionary directly."""
def dec(func):
assert stepname not in b2partsgenmapping
b2partsgenmapping[stepname] = func
if idx is None:
b2partsgenorder.append(stepname)
else:
b2partsgenorder.insert(idx, stepname)
return func
return dec
def _pushb2ctxcheckheads(pushop, bundler):
"""Generate race condition checking parts
Exists as an independent function to aid extensions
"""
# * 'force' do not check for push race,
# * if we don't push anything, there are nothing to check.
if not pushop.force and pushop.outgoing.ancestorsof:
allowunrelated = b'related' in bundler.capabilities.get(
b'checkheads', ()
)
emptyremote = pushop.pushbranchmap is None
if not allowunrelated or emptyremote:
bundler.newpart(b'check:heads', data=iter(pushop.remoteheads))
else:
affected = set()
for branch, heads in pushop.pushbranchmap.items():
remoteheads, newheads, unsyncedheads, discardedheads = heads
if remoteheads is not None:
remote = set(remoteheads)
affected |= set(discardedheads) & remote
affected |= remote - set(newheads)
if affected:
data = iter(sorted(affected))
bundler.newpart(b'check:updated-heads', data=data)
def _pushing(pushop):
"""return True if we are pushing anything"""
return bool(
pushop.outgoing.missing
or pushop.outdatedphases
or pushop.outobsmarkers
or pushop.outbookmarks
)
@b2partsgenerator(b'check-bookmarks')
def _pushb2checkbookmarks(pushop, bundler):
"""insert bookmark move checking"""
if not _pushing(pushop) or pushop.force:
return
b2caps = bundle2.bundle2caps(pushop.remote)
hasbookmarkcheck = b'bookmarks' in b2caps
if not (pushop.outbookmarks and hasbookmarkcheck):
return
data = []
for book, old, new in pushop.outbookmarks:
data.append((book, old))
checkdata = bookmod.binaryencode(pushop.repo, data)
bundler.newpart(b'check:bookmarks', data=checkdata)
@b2partsgenerator(b'check-phases')
def _pushb2checkphases(pushop, bundler):
"""insert phase move checking"""
if not _pushing(pushop) or pushop.force:
return
b2caps = bundle2.bundle2caps(pushop.remote)
hasphaseheads = b'heads' in b2caps.get(b'phases', ())
if pushop.remotephases is not None and hasphaseheads:
# check that the remote phase has not changed
checks = {p: [] for p in phases.allphases}
checks[phases.public].extend(pushop.remotephases.publicheads)
checks[phases.draft].extend(pushop.remotephases.draftroots)
if any(checks.values()):
for phase in checks:
checks[phase].sort()
checkdata = phases.binaryencode(checks)
bundler.newpart(b'check:phases', data=checkdata)
@b2partsgenerator(b'changeset')
def _pushb2ctx(pushop, bundler):
"""handle changegroup push through bundle2
addchangegroup result is stored in the ``pushop.cgresult`` attribute.
"""
if b'changesets' in pushop.stepsdone:
return
pushop.stepsdone.add(b'changesets')
# Send known heads to the server for race detection.
if not _pushcheckoutgoing(pushop):
return
pushop.repo.prepushoutgoinghooks(pushop)
_pushb2ctxcheckheads(pushop, bundler)
b2caps = bundle2.bundle2caps(pushop.remote)
version = b'01'
cgversions = b2caps.get(b'changegroup')
if cgversions: # 3.1 and 3.2 ship with an empty value
cgversions = [
v
for v in cgversions
if v in changegroup.supportedoutgoingversions(pushop.repo)
]
if not cgversions:
raise error.Abort(_(b'no common changegroup version'))
version = max(cgversions)
remote_sidedata = bundle2.read_remote_wanted_sidedata(pushop.remote)
cgstream = changegroup.makestream(
pushop.repo,
pushop.outgoing,
version,
b'push',
bundlecaps=b2caps,
remote_sidedata=remote_sidedata,
)
cgpart = bundler.newpart(b'changegroup', data=cgstream)
if cgversions:
cgpart.addparam(b'version', version)
if scmutil.istreemanifest(pushop.repo):
cgpart.addparam(b'treemanifest', b'1')
if repository.REPO_FEATURE_SIDE_DATA in pushop.repo.features:
cgpart.addparam(b'exp-sidedata', b'1')
def handlereply(op):
"""extract addchangegroup returns from server reply"""
cgreplies = op.records.getreplies(cgpart.id)
assert len(cgreplies[b'changegroup']) == 1
pushop.cgresult = cgreplies[b'changegroup'][0][b'return']
return handlereply
@b2partsgenerator(b'phase')
def _pushb2phases(pushop, bundler):
"""handle phase push through bundle2"""
if b'phases' in pushop.stepsdone:
return
b2caps = bundle2.bundle2caps(pushop.remote)
ui = pushop.repo.ui
legacyphase = b'phases' in ui.configlist(b'devel', b'legacy.exchange')
haspushkey = b'pushkey' in b2caps
hasphaseheads = b'heads' in b2caps.get(b'phases', ())
if hasphaseheads and not legacyphase:
return _pushb2phaseheads(pushop, bundler)
elif haspushkey:
return _pushb2phasespushkey(pushop, bundler)
def _pushb2phaseheads(pushop, bundler):
"""push phase information through a bundle2 - binary part"""
pushop.stepsdone.add(b'phases')
if pushop.outdatedphases:
updates = {p: [] for p in phases.allphases}
updates[0].extend(h.node() for h in pushop.outdatedphases)
phasedata = phases.binaryencode(updates)
bundler.newpart(b'phase-heads', data=phasedata)
def _pushb2phasespushkey(pushop, bundler):
"""push phase information through a bundle2 - pushkey part"""
pushop.stepsdone.add(b'phases')
part2node = []
def handlefailure(pushop, exc):
targetid = int(exc.partid)
for partid, node in part2node:
if partid == targetid:
raise error.Abort(_(b'updating %s to public failed') % node)
enc = pushkey.encode
for newremotehead in pushop.outdatedphases:
part = bundler.newpart(b'pushkey')
part.addparam(b'namespace', enc(b'phases'))
part.addparam(b'key', enc(newremotehead.hex()))
part.addparam(b'old', enc(b'%d' % phases.draft))
part.addparam(b'new', enc(b'%d' % phases.public))
part2node.append((part.id, newremotehead))
pushop.pkfailcb[part.id] = handlefailure
def handlereply(op):
for partid, node in part2node:
partrep = op.records.getreplies(partid)
results = partrep[b'pushkey']
assert len(results) <= 1
msg = None
if not results:
msg = _(b'server ignored update of %s to public!\n') % node
elif not int(results[0][b'return']):
msg = _(b'updating %s to public failed!\n') % node
if msg is not None:
pushop.ui.warn(msg)
return handlereply
@b2partsgenerator(b'obsmarkers')
def _pushb2obsmarkers(pushop, bundler):
if b'obsmarkers' in pushop.stepsdone:
return
remoteversions = bundle2.obsmarkersversion(bundler.capabilities)
if obsolete.commonversion(remoteversions) is None:
return
pushop.stepsdone.add(b'obsmarkers')
if pushop.outobsmarkers:
markers = obsutil.sortedmarkers(pushop.outobsmarkers)
bundle2.buildobsmarkerspart(bundler, markers)
@b2partsgenerator(b'bookmarks')
def _pushb2bookmarks(pushop, bundler):
"""handle bookmark push through bundle2"""
if b'bookmarks' in pushop.stepsdone:
return
b2caps = bundle2.bundle2caps(pushop.remote)
legacy = pushop.repo.ui.configlist(b'devel', b'legacy.exchange')
legacybooks = b'bookmarks' in legacy
if not legacybooks and b'bookmarks' in b2caps:
return _pushb2bookmarkspart(pushop, bundler)
elif b'pushkey' in b2caps:
return _pushb2bookmarkspushkey(pushop, bundler)
def _bmaction(old, new):
"""small utility for bookmark pushing"""
if not old:
return b'export'
elif not new:
return b'delete'
return b'update'
def _abortonsecretctx(pushop, node, b):
"""abort if a given bookmark points to a secret changeset"""
if node and pushop.repo[node].phase() == phases.secret:
raise error.Abort(
_(b'cannot push bookmark %s as it points to a secret changeset') % b
)
def _pushb2bookmarkspart(pushop, bundler):
pushop.stepsdone.add(b'bookmarks')
if not pushop.outbookmarks:
return
allactions = []
data = []
for book, old, new in pushop.outbookmarks:
_abortonsecretctx(pushop, new, book)
data.append((book, new))
allactions.append((book, _bmaction(old, new)))
checkdata = bookmod.binaryencode(pushop.repo, data)
bundler.newpart(b'bookmarks', data=checkdata)
def handlereply(op):
ui = pushop.ui
# if success
for book, action in allactions:
ui.status(bookmsgmap[action][0] % book)
return handlereply
def _pushb2bookmarkspushkey(pushop, bundler):
pushop.stepsdone.add(b'bookmarks')
part2book = []
enc = pushkey.encode
def handlefailure(pushop, exc):
targetid = int(exc.partid)
for partid, book, action in part2book:
if partid == targetid:
raise error.Abort(bookmsgmap[action][1].rstrip() % book)
# we should not be called for part we did not generated
assert False
for book, old, new in pushop.outbookmarks:
_abortonsecretctx(pushop, new, book)
part = bundler.newpart(b'pushkey')
part.addparam(b'namespace', enc(b'bookmarks'))
part.addparam(b'key', enc(book))
part.addparam(b'old', enc(hex(old)))
part.addparam(b'new', enc(hex(new)))
action = b'update'
if not old:
action = b'export'
elif not new:
action = b'delete'
part2book.append((part.id, book, action))
pushop.pkfailcb[part.id] = handlefailure
def handlereply(op):
ui = pushop.ui
for partid, book, action in part2book:
partrep = op.records.getreplies(partid)
results = partrep[b'pushkey']
assert len(results) <= 1
if not results:
pushop.ui.warn(_(b'server ignored bookmark %s update\n') % book)
else:
ret = int(results[0][b'return'])
if ret:
ui.status(bookmsgmap[action][0] % book)
else:
ui.warn(bookmsgmap[action][1] % book)
if pushop.bkresult is not None:
pushop.bkresult = 1
return handlereply
@b2partsgenerator(b'pushvars', idx=0)
def _getbundlesendvars(pushop, bundler):
'''send shellvars via bundle2'''
pushvars = pushop.pushvars
if pushvars:
shellvars = {}
for raw in pushvars:
if b'=' not in raw:
msg = (
b"unable to parse variable '%s', should follow "
b"'KEY=VALUE' or 'KEY=' format"
)
raise error.Abort(msg % raw)
k, v = raw.split(b'=', 1)
shellvars[k] = v
part = bundler.newpart(b'pushvars')
for key, value in shellvars.items():
part.addparam(key, value, mandatory=False)
def _pushbundle2(pushop):
"""push data to the remote using bundle2
The only currently supported type of data is changegroup but this will
evolve in the future."""
bundler = bundle2.bundle20(pushop.ui, bundle2.bundle2caps(pushop.remote))
pushback = pushop.trmanager and pushop.ui.configbool(
b'experimental', b'bundle2.pushback'
)
# create reply capability
capsblob = bundle2.encodecaps(
bundle2.getrepocaps(pushop.repo, allowpushback=pushback, role=b'client')
)
bundler.newpart(b'replycaps', data=capsblob)
replyhandlers = []
for partgenname in b2partsgenorder:
partgen = b2partsgenmapping[partgenname]
ret = partgen(pushop, bundler)
if callable(ret):
replyhandlers.append(ret)
# do not push if nothing to push
if bundler.nbparts <= 1:
return
stream = util.chunkbuffer(bundler.getchunks())
try:
try:
with pushop.remote.commandexecutor() as e:
reply = e.callcommand(
b'unbundle',
{
b'bundle': stream,
b'heads': [b'force'],
b'url': pushop.remote.url(),
},
).result()
except error.BundleValueError as exc:
raise error.RemoteError(_(b'missing support for %s') % exc)
try:
trgetter = None
if pushback:
trgetter = pushop.trmanager.transaction
op = bundle2.processbundle(
pushop.repo,
reply,
trgetter,
remote=pushop.remote,
)
except error.BundleValueError as exc:
raise error.RemoteError(_(b'missing support for %s') % exc)
except bundle2.AbortFromPart as exc:
pushop.ui.error(_(b'remote: %s\n') % exc)
if exc.hint is not None:
pushop.ui.error(_(b'remote: %s\n') % (b'(%s)' % exc.hint))
raise error.RemoteError(_(b'push failed on remote'))
except error.PushkeyFailed as exc:
partid = int(exc.partid)
if partid not in pushop.pkfailcb:
raise
pushop.pkfailcb[partid](pushop, exc)
for rephand in replyhandlers:
rephand(op)
def _pushchangeset(pushop):
"""Make the actual push of changeset bundle to remote repo"""
if b'changesets' in pushop.stepsdone:
return
pushop.stepsdone.add(b'changesets')
if not _pushcheckoutgoing(pushop):
return
# Should have verified this in push().
assert pushop.remote.capable(b'unbundle')
pushop.repo.prepushoutgoinghooks(pushop)
outgoing = pushop.outgoing
# TODO: get bundlecaps from remote
bundlecaps = None
# create a changegroup from local
if pushop.revs is None and not (
outgoing.excluded or pushop.repo.changelog.filteredrevs
):
# push everything,
# use the fast path, no race possible on push
cg = changegroup.makechangegroup(
pushop.repo,
outgoing,
b'01',
b'push',
fastpath=True,
bundlecaps=bundlecaps,
)
else:
cg = changegroup.makechangegroup(
pushop.repo, outgoing, b'01', b'push', bundlecaps=bundlecaps
)
# apply changegroup to remote
# local repo finds heads on server, finds out what
# revs it must push. once revs transferred, if server
# finds it has different heads (someone else won
# commit/push race), server aborts.
if pushop.force:
remoteheads = [b'force']
else:
remoteheads = pushop.remoteheads
# ssh: return remote's addchangegroup()
# http: return remote's addchangegroup() or 0 for error
pushop.cgresult = pushop.remote.unbundle(cg, remoteheads, pushop.repo.url())
def _pushsyncphase(pushop):
"""synchronise phase information locally and remotely"""
cheads = pushop.commonheads
# even when we don't push, exchanging phase data is useful
remotephases = listkeys(pushop.remote, b'phases')
if (
pushop.ui.configbool(b'ui', b'_usedassubrepo')
and remotephases # server supports phases
and pushop.cgresult is None # nothing was pushed
and remotephases.get(b'publishing', False)
):
# When:
# - this is a subrepo push
# - and remote support phase
# - and no changeset was pushed
# - and remote is publishing
# We may be in issue 3871 case!
# We drop the possible phase synchronisation done by
# courtesy to publish changesets possibly locally draft
# on the remote.
remotephases = {b'publishing': b'True'}
if not remotephases: # old server or public only reply from non-publishing
_localphasemove(pushop, cheads)
# don't push any phase data as there is nothing to push
else:
ana = phases.analyzeremotephases(pushop.repo, cheads, remotephases)
pheads, droots = ana
### Apply remote phase on local
if remotephases.get(b'publishing', False):
_localphasemove(pushop, cheads)
else: # publish = False
_localphasemove(pushop, pheads)
_localphasemove(pushop, cheads, phases.draft)
### Apply local phase on remote
if pushop.cgresult:
if b'phases' in pushop.stepsdone:
# phases already pushed though bundle2
return
outdated = pushop.outdatedphases
else:
outdated = pushop.fallbackoutdatedphases
pushop.stepsdone.add(b'phases')
# filter heads already turned public by the push
outdated = [c for c in outdated if c.node() not in pheads]
# fallback to independent pushkey command
for newremotehead in outdated:
with pushop.remote.commandexecutor() as e:
r = e.callcommand(
b'pushkey',
{
b'namespace': b'phases',
b'key': newremotehead.hex(),
b'old': b'%d' % phases.draft,
b'new': b'%d' % phases.public,
},
).result()
if not r:
pushop.ui.warn(
_(b'updating %s to public failed!\n') % newremotehead
)
def _localphasemove(pushop, nodes, phase=phases.public):
"""move <nodes> to <phase> in the local source repo"""
if pushop.trmanager:
phases.advanceboundary(
pushop.repo, pushop.trmanager.transaction(), phase, nodes
)
else:
# repo is not locked, do not change any phases!
# Informs the user that phases should have been moved when
# applicable.
actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
phasestr = phases.phasenames[phase]
if actualmoves:
pushop.ui.status(
_(
b'cannot lock source repo, skipping '
b'local %s phase update\n'
)
% phasestr
)
def _pushobsolete(pushop):
"""utility function to push obsolete markers to a remote"""
if b'obsmarkers' in pushop.stepsdone:
return
repo = pushop.repo
remote = pushop.remote
pushop.stepsdone.add(b'obsmarkers')
if pushop.outobsmarkers:
pushop.ui.debug(b'try to push obsolete markers to remote\n')
rslts = []
markers = obsutil.sortedmarkers(pushop.outobsmarkers)
remotedata = obsolete._pushkeyescape(markers)
for key in sorted(remotedata, reverse=True):
# reverse sort to ensure we end with dump0
data = remotedata[key]
rslts.append(remote.pushkey(b'obsolete', key, b'', data))
if [r for r in rslts if not r]:
msg = _(b'failed to push some obsolete markers!\n')
repo.ui.warn(msg)
def _pushbookmark(pushop):
"""Update bookmark position on remote"""
if pushop.cgresult == 0 or b'bookmarks' in pushop.stepsdone:
return
pushop.stepsdone.add(b'bookmarks')
ui = pushop.ui
remote = pushop.remote
for b, old, new in pushop.outbookmarks:
action = b'update'
if not old:
action = b'export'
elif not new:
action = b'delete'
with remote.commandexecutor() as e:
r = e.callcommand(
b'pushkey',
{
b'namespace': b'bookmarks',
b'key': b,
b'old': hex(old),
b'new': hex(new),
},
).result()
if r:
ui.status(bookmsgmap[action][0] % b)
else:
ui.warn(bookmsgmap[action][1] % b)
# discovery can have set the value form invalid entry
if pushop.bkresult is not None:
pushop.bkresult = 1
class pulloperation:
"""A object that represent a single pull operation
It purpose is to carry pull related state and very common operation.
A new should be created at the beginning of each pull and discarded
afterward.
"""
def __init__(
self,
repo,
remote,
heads=None,
force=False,
bookmarks=(),
remotebookmarks=None,
streamclonerequested=None,
includepats=None,
excludepats=None,
depth=None,
path=None,
):
# repo we pull into
self.repo = repo
# repo we pull from
self.remote = remote
# path object used to build this remote
#
# Ideally, the remote peer would carry that directly.
self.remote_path = path
# revision we try to pull (None is "all")
self.heads = heads
# bookmark pulled explicitly
self.explicitbookmarks = [
repo._bookmarks.expandname(bookmark) for bookmark in bookmarks
]
# do we force pull?
self.force = force
# whether a streaming clone was requested
self.streamclonerequested = streamclonerequested
# transaction manager
self.trmanager = None
# set of common changeset between local and remote before pull
self.common = None
# set of pulled head
self.rheads = None
# list of missing changeset to fetch remotely
self.fetch = None
# remote bookmarks data
self.remotebookmarks = remotebookmarks
# result of changegroup pulling (used as return code by pull)
self.cgresult = None
# list of step already done
self.stepsdone = set()
# Whether we attempted a clone from pre-generated bundles.
self.clonebundleattempted = False
# Set of file patterns to include.
self.includepats = includepats
# Set of file patterns to exclude.
self.excludepats = excludepats
# Number of ancestor changesets to pull from each pulled head.
self.depth = depth
@util.propertycache
def pulledsubset(self):
"""heads of the set of changeset target by the pull"""
# compute target subset
if self.heads is None:
# We pulled every thing possible
# sync on everything common
c = set(self.common)
ret = list(self.common)
for n in self.rheads:
if n not in c:
ret.append(n)
return ret
else:
# We pulled a specific subset
# sync on this subset
return self.heads
@util.propertycache
def canusebundle2(self):
return not _forcebundle1(self)
@util.propertycache
def remotebundle2caps(self):
return bundle2.bundle2caps(self.remote)
def gettransaction(self):
# deprecated; talk to trmanager directly
return self.trmanager.transaction()
class transactionmanager(util.transactional):
"""An object to manage the life cycle of a transaction
It creates the transaction on demand and calls the appropriate hooks when
closing the transaction."""
def __init__(self, repo, source, url):
self.repo = repo
self.source = source
self.url = url
self._tr = None
def transaction(self):
"""Return an open transaction object, constructing if necessary"""
if not self._tr:
trname = b'%s\n%s' % (self.source, urlutil.hidepassword(self.url))
self._tr = self.repo.transaction(trname)
self._tr.hookargs[b'source'] = self.source
self._tr.hookargs[b'url'] = self.url
return self._tr
def close(self):
"""close transaction if created"""
if self._tr is not None:
self._tr.close()
def release(self):
"""release transaction if created"""
if self._tr is not None:
self._tr.release()
def listkeys(remote, namespace):
with remote.commandexecutor() as e:
return e.callcommand(b'listkeys', {b'namespace': namespace}).result()
def _fullpullbundle2(repo, pullop):
# The server may send a partial reply, i.e. when inlining
# pre-computed bundles. In that case, update the common
# set based on the results and pull another bundle.
#
# There are two indicators that the process is finished:
# - no changeset has been added, or
# - all remote heads are known locally.
# The head check must use the unfiltered view as obsoletion
# markers can hide heads.
unfi = repo.unfiltered()
unficl = unfi.changelog
def headsofdiff(h1, h2):
"""Returns heads(h1 % h2)"""
res = unfi.set(b'heads(%ln %% %ln)', h1, h2)
return {ctx.node() for ctx in res}
def headsofunion(h1, h2):
"""Returns heads((h1 + h2) - null)"""
res = unfi.set(b'heads((%ln + %ln - null))', h1, h2)
return {ctx.node() for ctx in res}
while True:
old_heads = unficl.heads()
clstart = len(unficl)
_pullbundle2(pullop)
if requirements.NARROW_REQUIREMENT in repo.requirements:
# XXX narrow clones filter the heads on the server side during
# XXX getbundle and result in partial replies as well.
# XXX Disable pull bundles in this case as band aid to avoid
# XXX extra round trips.
break
if clstart == len(unficl):
break
if all(unficl.hasnode(n) for n in pullop.rheads):
break
new_heads = headsofdiff(unficl.heads(), old_heads)
pullop.common = headsofunion(new_heads, pullop.common)
pullop.rheads = set(pullop.rheads) - pullop.common
def add_confirm_callback(repo, pullop):
"""adds a finalize callback to transaction which can be used to show stats
to user and confirm the pull before committing transaction"""
tr = pullop.trmanager.transaction()
scmutil.registersummarycallback(
repo, tr, txnname=b'pull', as_validator=True
)
reporef = weakref.ref(repo.unfiltered())
def prompt(tr):
repo = reporef()
cm = _(b'accept incoming changes (yn)?$$ &Yes $$ &No')
if repo.ui.promptchoice(cm):
raise error.Abort(b"user aborted")
tr.addvalidator(b'900-pull-prompt', prompt)
def pull(
repo,
remote,
path=None,
heads=None,
force=False,
bookmarks=(),
opargs=None,
streamclonerequested=None,
includepats=None,
excludepats=None,
depth=None,
confirm=None,
):
"""Fetch repository data from a remote.
This is the main function used to retrieve data from a remote repository.
``repo`` is the local repository to clone into.
``remote`` is a peer instance.
``heads`` is an iterable of revisions we want to pull. ``None`` (the
default) means to pull everything from the remote.
``bookmarks`` is an iterable of bookmarks requesting to be pulled. By
default, all remote bookmarks are pulled.
``opargs`` are additional keyword arguments to pass to ``pulloperation``
initialization.
``streamclonerequested`` is a boolean indicating whether a "streaming
clone" is requested. A "streaming clone" is essentially a raw file copy
of revlogs from the server. This only works when the local repository is
empty. The default value of ``None`` means to respect the server
configuration for preferring stream clones.
``includepats`` and ``excludepats`` define explicit file patterns to
include and exclude in storage, respectively. If not defined, narrow
patterns from the repo instance are used, if available.
``depth`` is an integer indicating the DAG depth of history we're
interested in. If defined, for each revision specified in ``heads``, we
will fetch up to this many of its ancestors and data associated with them.
``confirm`` is a boolean indicating whether the pull should be confirmed
before committing the transaction. This overrides HGPLAIN.
Returns the ``pulloperation`` created for this pull.
"""
if opargs is None:
opargs = {}
# We allow the narrow patterns to be passed in explicitly to provide more
# flexibility for API consumers.
if includepats is not None or excludepats is not None:
includepats = includepats or set()
excludepats = excludepats or set()
else:
includepats, excludepats = repo.narrowpats
narrowspec.validatepatterns(includepats)
narrowspec.validatepatterns(excludepats)
pullop = pulloperation(
repo,
remote,
path=path,
heads=heads,
force=force,
bookmarks=bookmarks,
streamclonerequested=streamclonerequested,
includepats=includepats,
excludepats=excludepats,
depth=depth,
**pycompat.strkwargs(opargs)
)
peerlocal = pullop.remote.local()
if peerlocal:
missing = set(peerlocal.requirements) - pullop.repo.supported
if missing:
msg = _(
b"required features are not"
b" supported in the destination:"
b" %s"
) % (b', '.join(sorted(missing)))
raise error.Abort(msg)
for category in repo._wanted_sidedata:
# Check that a computer is registered for that category for at least
# one revlog kind.
for kind, computers in repo._sidedata_computers.items():
if computers.get(category):
break
else:
# This should never happen since repos are supposed to be able to
# generate the sidedata they require.
raise error.ProgrammingError(
_(
b'sidedata category requested by local side without local'
b"support: '%s'"
)
% pycompat.bytestr(category)
)
pullop.trmanager = transactionmanager(repo, b'pull', remote.url())
wlock = util.nullcontextmanager()
if not bookmod.bookmarksinstore(repo):
wlock = repo.wlock()
with wlock, repo.lock(), pullop.trmanager:
if confirm or (
repo.ui.configbool(b"pull", b"confirm") and not repo.ui.plain()
):
add_confirm_callback(repo, pullop)
# This should ideally be in _pullbundle2(). However, it needs to run
# before discovery to avoid extra work.
_maybeapplyclonebundle(pullop)
streamclone.maybeperformlegacystreamclone(pullop)
_pulldiscovery(pullop)
if pullop.canusebundle2:
_fullpullbundle2(repo, pullop)
_pullchangeset(pullop)
_pullphase(pullop)
_pullbookmarks(pullop)
_pullobsolete(pullop)
# storing remotenames
if repo.ui.configbool(b'experimental', b'remotenames'):
logexchange.pullremotenames(repo, remote)
return pullop
# list of steps to perform discovery before pull
pulldiscoveryorder = []
# Mapping between step name and function
#
# This exists to help extensions wrap steps if necessary
pulldiscoverymapping = {}
def pulldiscovery(stepname):
"""decorator for function performing discovery before pull
The function is added to the step -> function mapping and appended to the
list of steps. Beware that decorated function will be added in order (this
may matter).
You can only use this decorator for a new step, if you want to wrap a step
from an extension, change the pulldiscovery dictionary directly."""
def dec(func):
assert stepname not in pulldiscoverymapping
pulldiscoverymapping[stepname] = func
pulldiscoveryorder.append(stepname)
return func
return dec
def _pulldiscovery(pullop):
"""Run all discovery steps"""
for stepname in pulldiscoveryorder:
step = pulldiscoverymapping[stepname]
step(pullop)
@pulldiscovery(b'b1:bookmarks')
def _pullbookmarkbundle1(pullop):
"""fetch bookmark data in bundle1 case
If not using bundle2, we have to fetch bookmarks before changeset
discovery to reduce the chance and impact of race conditions."""
if pullop.remotebookmarks is not None:
return
if pullop.canusebundle2 and b'listkeys' in pullop.remotebundle2caps:
# all known bundle2 servers now support listkeys, but lets be nice with
# new implementation.
return
books = listkeys(pullop.remote, b'bookmarks')
pullop.remotebookmarks = bookmod.unhexlifybookmarks(books)
@pulldiscovery(b'changegroup')
def _pulldiscoverychangegroup(pullop):
"""discovery phase for the pull
Current handle changeset discovery only, will change handle all discovery
at some point."""
tmp = discovery.findcommonincoming(
pullop.repo, pullop.remote, heads=pullop.heads, force=pullop.force
)
common, fetch, rheads = tmp
has_node = pullop.repo.unfiltered().changelog.index.has_node
if fetch and rheads:
# If a remote heads is filtered locally, put in back in common.
#
# This is a hackish solution to catch most of "common but locally
# hidden situation". We do not performs discovery on unfiltered
# repository because it end up doing a pathological amount of round
# trip for w huge amount of changeset we do not care about.
#
# If a set of such "common but filtered" changeset exist on the server
# but are not including a remote heads, we'll not be able to detect it,
scommon = set(common)
for n in rheads:
if has_node(n):
if n not in scommon:
common.append(n)
if set(rheads).issubset(set(common)):
fetch = []
pullop.common = common
pullop.fetch = fetch
pullop.rheads = rheads
def _pullbundle2(pullop):
"""pull data using bundle2
For now, the only supported data are changegroup."""
kwargs = {b'bundlecaps': caps20to10(pullop.repo, role=b'client')}
# make ui easier to access
ui = pullop.repo.ui
# At the moment we don't do stream clones over bundle2. If that is
# implemented then here's where the check for that will go.
streaming = streamclone.canperformstreamclone(pullop, bundle2=True)[0]
# declare pull perimeters
kwargs[b'common'] = pullop.common
kwargs[b'heads'] = pullop.heads or pullop.rheads
# check server supports narrow and then adding includepats and excludepats
servernarrow = pullop.remote.capable(wireprototypes.NARROWCAP)
if servernarrow and pullop.includepats:
kwargs[b'includepats'] = pullop.includepats
if servernarrow and pullop.excludepats:
kwargs[b'excludepats'] = pullop.excludepats
if streaming:
kwargs[b'cg'] = False
kwargs[b'stream'] = True
pullop.stepsdone.add(b'changegroup')
pullop.stepsdone.add(b'phases')
else:
# pulling changegroup
pullop.stepsdone.add(b'changegroup')
kwargs[b'cg'] = pullop.fetch
legacyphase = b'phases' in ui.configlist(b'devel', b'legacy.exchange')
hasbinaryphase = b'heads' in pullop.remotebundle2caps.get(b'phases', ())
if not legacyphase and hasbinaryphase:
kwargs[b'phases'] = True
pullop.stepsdone.add(b'phases')
if b'listkeys' in pullop.remotebundle2caps:
if b'phases' not in pullop.stepsdone:
kwargs[b'listkeys'] = [b'phases']
bookmarksrequested = False
legacybookmark = b'bookmarks' in ui.configlist(b'devel', b'legacy.exchange')
hasbinarybook = b'bookmarks' in pullop.remotebundle2caps
if pullop.remotebookmarks is not None:
pullop.stepsdone.add(b'request-bookmarks')
if (
b'request-bookmarks' not in pullop.stepsdone
and pullop.remotebookmarks is None
and not legacybookmark
and hasbinarybook
):
kwargs[b'bookmarks'] = True
bookmarksrequested = True
if b'listkeys' in pullop.remotebundle2caps:
if b'request-bookmarks' not in pullop.stepsdone:
# make sure to always includes bookmark data when migrating
# `hg incoming --bundle` to using this function.
pullop.stepsdone.add(b'request-bookmarks')
kwargs.setdefault(b'listkeys', []).append(b'bookmarks')
# If this is a full pull / clone and the server supports the clone bundles
# feature, tell the server whether we attempted a clone bundle. The
# presence of this flag indicates the client supports clone bundles. This
# will enable the server to treat clients that support clone bundles
# differently from those that don't.
if (
pullop.remote.capable(b'clonebundles')
and pullop.heads is None
and list(pullop.common) == [pullop.repo.nullid]
):
kwargs[b'cbattempted'] = pullop.clonebundleattempted
if streaming:
pullop.repo.ui.status(_(b'streaming all changes\n'))
elif not pullop.fetch:
pullop.repo.ui.status(_(b"no changes found\n"))
pullop.cgresult = 0
else:
if pullop.heads is None and list(pullop.common) == [pullop.repo.nullid]:
pullop.repo.ui.status(_(b"requesting all changes\n"))
if obsolete.isenabled(pullop.repo, obsolete.exchangeopt):
remoteversions = bundle2.obsmarkersversion(pullop.remotebundle2caps)
if obsolete.commonversion(remoteversions) is not None:
kwargs[b'obsmarkers'] = True
pullop.stepsdone.add(b'obsmarkers')
_pullbundle2extraprepare(pullop, kwargs)
remote_sidedata = bundle2.read_remote_wanted_sidedata(pullop.remote)
if remote_sidedata:
kwargs[b'remote_sidedata'] = remote_sidedata
with pullop.remote.commandexecutor() as e:
args = dict(kwargs)
args[b'source'] = b'pull'
bundle = e.callcommand(b'getbundle', args).result()
try:
op = bundle2.bundleoperation(
pullop.repo,
pullop.gettransaction,
source=b'pull',
remote=pullop.remote,
)
op.modes[b'bookmarks'] = b'records'
bundle2.processbundle(
pullop.repo,
bundle,
op=op,
remote=pullop.remote,
)
except bundle2.AbortFromPart as exc:
pullop.repo.ui.error(_(b'remote: abort: %s\n') % exc)
raise error.RemoteError(_(b'pull failed on remote'), hint=exc.hint)
except error.BundleValueError as exc:
raise error.RemoteError(_(b'missing support for %s') % exc)
if pullop.fetch:
pullop.cgresult = bundle2.combinechangegroupresults(op)
# processing phases change
for namespace, value in op.records[b'listkeys']:
if namespace == b'phases':
_pullapplyphases(pullop, value)
# processing bookmark update
if bookmarksrequested:
books = {}
for record in op.records[b'bookmarks']:
books[record[b'bookmark']] = record[b"node"]
pullop.remotebookmarks = books
else:
for namespace, value in op.records[b'listkeys']:
if namespace == b'bookmarks':
pullop.remotebookmarks = bookmod.unhexlifybookmarks(value)
# bookmark data were either already there or pulled in the bundle
if pullop.remotebookmarks is not None:
_pullbookmarks(pullop)
def _pullbundle2extraprepare(pullop, kwargs):
"""hook function so that extensions can extend the getbundle call"""
def _pullchangeset(pullop):
"""pull changeset from unbundle into the local repo"""
# We delay the open of the transaction as late as possible so we
# don't open transaction for nothing or you break future useful
# rollback call
if b'changegroup' in pullop.stepsdone:
return
pullop.stepsdone.add(b'changegroup')
if not pullop.fetch:
pullop.repo.ui.status(_(b"no changes found\n"))
pullop.cgresult = 0
return
tr = pullop.gettransaction()
if pullop.heads is None and list(pullop.common) == [pullop.repo.nullid]:
pullop.repo.ui.status(_(b"requesting all changes\n"))
elif pullop.heads is None and pullop.remote.capable(b'changegroupsubset'):
# issue1320, avoid a race if remote changed after discovery
pullop.heads = pullop.rheads
if pullop.remote.capable(b'getbundle'):
# TODO: get bundlecaps from remote
cg = pullop.remote.getbundle(
b'pull', common=pullop.common, heads=pullop.heads or pullop.rheads
)
elif pullop.heads is None:
with pullop.remote.commandexecutor() as e:
cg = e.callcommand(
b'changegroup',
{
b'nodes': pullop.fetch,
b'source': b'pull',
},
).result()
elif not pullop.remote.capable(b'changegroupsubset'):
raise error.Abort(
_(
b"partial pull cannot be done because "
b"other repository doesn't support "
b"changegroupsubset."
)
)
else:
with pullop.remote.commandexecutor() as e:
cg = e.callcommand(
b'changegroupsubset',
{
b'bases': pullop.fetch,
b'heads': pullop.heads,
b'source': b'pull',
},
).result()
bundleop = bundle2.applybundle(
pullop.repo,
cg,
tr,
b'pull',
pullop.remote.url(),
remote=pullop.remote,
)
pullop.cgresult = bundle2.combinechangegroupresults(bundleop)
def _pullphase(pullop):
# Get remote phases data from remote
if b'phases' in pullop.stepsdone:
return
remotephases = listkeys(pullop.remote, b'phases')
_pullapplyphases(pullop, remotephases)
def _pullapplyphases(pullop, remotephases):
"""apply phase movement from observed remote state"""
if b'phases' in pullop.stepsdone:
return
pullop.stepsdone.add(b'phases')
publishing = bool(remotephases.get(b'publishing', False))
if remotephases and not publishing:
# remote is new and non-publishing
pheads, _dr = phases.analyzeremotephases(
pullop.repo, pullop.pulledsubset, remotephases
)
dheads = pullop.pulledsubset
else:
# Remote is old or publishing all common changesets
# should be seen as public
pheads = pullop.pulledsubset
dheads = []
unfi = pullop.repo.unfiltered()
phase = unfi._phasecache.phase
rev = unfi.changelog.index.get_rev
public = phases.public
draft = phases.draft
# exclude changesets already public locally and update the others
pheads = [pn for pn in pheads if phase(unfi, rev(pn)) > public]
if pheads:
tr = pullop.gettransaction()
phases.advanceboundary(pullop.repo, tr, public, pheads)
# exclude changesets already draft locally and update the others
dheads = [pn for pn in dheads if phase(unfi, rev(pn)) > draft]
if dheads:
tr = pullop.gettransaction()
phases.advanceboundary(pullop.repo, tr, draft, dheads)
def _pullbookmarks(pullop):
"""process the remote bookmark information to update the local one"""
if b'bookmarks' in pullop.stepsdone:
return
pullop.stepsdone.add(b'bookmarks')
repo = pullop.repo
remotebookmarks = pullop.remotebookmarks
bookmarks_mode = None
if pullop.remote_path is not None:
bookmarks_mode = pullop.remote_path.bookmarks_mode
bookmod.updatefromremote(
repo.ui,
repo,
remotebookmarks,
pullop.remote.url(),
pullop.gettransaction,
explicit=pullop.explicitbookmarks,
mode=bookmarks_mode,
)
def _pullobsolete(pullop):
"""utility function to pull obsolete markers from a remote
The `gettransaction` is function that return the pull transaction, creating
one if necessary. We return the transaction to inform the calling code that
a new transaction have been created (when applicable).
Exists mostly to allow overriding for experimentation purpose"""
if b'obsmarkers' in pullop.stepsdone:
return
pullop.stepsdone.add(b'obsmarkers')
tr = None
if obsolete.isenabled(pullop.repo, obsolete.exchangeopt):
pullop.repo.ui.debug(b'fetching remote obsolete markers\n')
remoteobs = listkeys(pullop.remote, b'obsolete')
if b'dump0' in remoteobs:
tr = pullop.gettransaction()
markers = []
for key in sorted(remoteobs, reverse=True):
if key.startswith(b'dump'):
data = util.b85decode(remoteobs[key])
version, newmarks = obsolete._readmarkers(data)
markers += newmarks
if markers:
pullop.repo.obsstore.add(tr, markers)
pullop.repo.invalidatevolatilesets()
return tr
def applynarrowacl(repo, kwargs):
"""Apply narrow fetch access control.
This massages the named arguments for getbundle wire protocol commands
so requested data is filtered through access control rules.
"""
ui = repo.ui
# TODO this assumes existence of HTTP and is a layering violation.
username = ui.shortuser(ui.environ.get(b'REMOTE_USER') or ui.username())
user_includes = ui.configlist(
_NARROWACL_SECTION,
username + b'.includes',
ui.configlist(_NARROWACL_SECTION, b'default.includes'),
)
user_excludes = ui.configlist(
_NARROWACL_SECTION,
username + b'.excludes',
ui.configlist(_NARROWACL_SECTION, b'default.excludes'),
)
if not user_includes:
raise error.Abort(
_(b"%s configuration for user %s is empty")
% (_NARROWACL_SECTION, username)
)
user_includes = [
b'path:.' if p == b'*' else b'path:' + p for p in user_includes
]
user_excludes = [
b'path:.' if p == b'*' else b'path:' + p for p in user_excludes
]
req_includes = set(kwargs.get('includepats', []))
req_excludes = set(kwargs.get('excludepats', []))
req_includes, req_excludes, invalid_includes = narrowspec.restrictpatterns(
req_includes, req_excludes, user_includes, user_excludes
)
if invalid_includes:
raise error.Abort(
_(b"The following includes are not accessible for %s: %s")
% (username, stringutil.pprint(invalid_includes))
)
new_args = {}
new_args.update(kwargs)
new_args['narrow'] = True
new_args['narrow_acl'] = True
new_args['includepats'] = req_includes
if req_excludes:
new_args['excludepats'] = req_excludes
return new_args
def _computeellipsis(repo, common, heads, known, match, depth=None):
"""Compute the shape of a narrowed DAG.
Args:
repo: The repository we're transferring.
common: The roots of the DAG range we're transferring.
May be just [nullid], which means all ancestors of heads.
heads: The heads of the DAG range we're transferring.
match: The narrowmatcher that allows us to identify relevant changes.
depth: If not None, only consider nodes to be full nodes if they are at
most depth changesets away from one of heads.
Returns:
A tuple of (visitnodes, relevant_nodes, ellipsisroots) where:
visitnodes: The list of nodes (either full or ellipsis) which
need to be sent to the client.
relevant_nodes: The set of changelog nodes which change a file inside
the narrowspec. The client needs these as non-ellipsis nodes.
ellipsisroots: A dict of {rev: parents} that is used in
narrowchangegroup to produce ellipsis nodes with the
correct parents.
"""
cl = repo.changelog
mfl = repo.manifestlog
clrev = cl.rev
commonrevs = {clrev(n) for n in common} | {nullrev}
headsrevs = {clrev(n) for n in heads}
if depth:
revdepth = {h: 0 for h in headsrevs}
ellipsisheads = collections.defaultdict(set)
ellipsisroots = collections.defaultdict(set)
def addroot(head, curchange):
"""Add a root to an ellipsis head, splitting heads with 3 roots."""
ellipsisroots[head].add(curchange)
# Recursively split ellipsis heads with 3 roots by finding the
# roots' youngest common descendant which is an elided merge commit.
# That descendant takes 2 of the 3 roots as its own, and becomes a
# root of the head.
while len(ellipsisroots[head]) > 2:
child, roots = splithead(head)
splitroots(head, child, roots)
head = child # Recurse in case we just added a 3rd root
def splitroots(head, child, roots):
ellipsisroots[head].difference_update(roots)
ellipsisroots[head].add(child)
ellipsisroots[child].update(roots)
ellipsisroots[child].discard(child)
def splithead(head):
r1, r2, r3 = sorted(ellipsisroots[head])
for nr1, nr2 in ((r2, r3), (r1, r3), (r1, r2)):
mid = repo.revs(
b'sort(merge() & %d::%d & %d::%d, -rev)', nr1, head, nr2, head
)
for j in mid:
if j == nr2:
return nr2, (nr1, nr2)
if j not in ellipsisroots or len(ellipsisroots[j]) < 2:
return j, (nr1, nr2)
raise error.Abort(
_(
b'Failed to split up ellipsis node! head: %d, '
b'roots: %d %d %d'
)
% (head, r1, r2, r3)
)
missing = list(cl.findmissingrevs(common=commonrevs, heads=headsrevs))
visit = reversed(missing)
relevant_nodes = set()
visitnodes = [cl.node(m) for m in missing]
required = set(headsrevs) | known
for rev in visit:
clrev = cl.changelogrevision(rev)
ps = [prev for prev in cl.parentrevs(rev) if prev != nullrev]
if depth is not None:
curdepth = revdepth[rev]
for p in ps:
revdepth[p] = min(curdepth + 1, revdepth.get(p, depth + 1))
needed = False
shallow_enough = depth is None or revdepth[rev] <= depth
if shallow_enough:
curmf = mfl[clrev.manifest].read()
if ps:
# We choose to not trust the changed files list in
# changesets because it's not always correct. TODO: could
# we trust it for the non-merge case?
p1mf = mfl[cl.changelogrevision(ps[0]).manifest].read()
needed = bool(curmf.diff(p1mf, match))
if not needed and len(ps) > 1:
# For merge changes, the list of changed files is not
# helpful, since we need to emit the merge if a file
# in the narrow spec has changed on either side of the
# merge. As a result, we do a manifest diff to check.
p2mf = mfl[cl.changelogrevision(ps[1]).manifest].read()
needed = bool(curmf.diff(p2mf, match))
else:
# For a root node, we need to include the node if any
# files in the node match the narrowspec.
needed = any(curmf.walk(match))
if needed:
for head in ellipsisheads[rev]:
addroot(head, rev)
for p in ps:
required.add(p)
relevant_nodes.add(cl.node(rev))
else:
if not ps:
ps = [nullrev]
if rev in required:
for head in ellipsisheads[rev]:
addroot(head, rev)
for p in ps:
ellipsisheads[p].add(rev)
else:
for p in ps:
ellipsisheads[p] |= ellipsisheads[rev]
# add common changesets as roots of their reachable ellipsis heads
for c in commonrevs:
for head in ellipsisheads[c]:
addroot(head, c)
return visitnodes, relevant_nodes, ellipsisroots
def caps20to10(repo, role):
"""return a set with appropriate options to use bundle20 during getbundle"""
caps = {b'HG20'}
capsblob = bundle2.encodecaps(bundle2.getrepocaps(repo, role=role))
caps.add(b'bundle2=' + urlreq.quote(capsblob))
return caps
# List of names of steps to perform for a bundle2 for getbundle, order matters.
getbundle2partsorder = []
# Mapping between step name and function
#
# This exists to help extensions wrap steps if necessary
getbundle2partsmapping = {}
def getbundle2partsgenerator(stepname, idx=None):
"""decorator for function generating bundle2 part for getbundle
The function is added to the step -> function mapping and appended to the
list of steps. Beware that decorated functions will be added in order
(this may matter).
You can only use this decorator for new steps, if you want to wrap a step
from an extension, attack the getbundle2partsmapping dictionary directly."""
def dec(func):
assert stepname not in getbundle2partsmapping
getbundle2partsmapping[stepname] = func
if idx is None:
getbundle2partsorder.append(stepname)
else:
getbundle2partsorder.insert(idx, stepname)
return func
return dec
def bundle2requested(bundlecaps):
if bundlecaps is not None:
return any(cap.startswith(b'HG2') for cap in bundlecaps)
return False
def getbundlechunks(
repo,
source,
heads=None,
common=None,
bundlecaps=None,
remote_sidedata=None,
**kwargs
):
"""Return chunks constituting a bundle's raw data.
Could be a bundle HG10 or a bundle HG20 depending on bundlecaps
passed.
Returns a 2-tuple of a dict with metadata about the generated bundle
and an iterator over raw chunks (of varying sizes).
"""
kwargs = pycompat.byteskwargs(kwargs)
info = {}
usebundle2 = bundle2requested(bundlecaps)
# bundle10 case
if not usebundle2:
if bundlecaps and not kwargs.get(b'cg', True):
raise ValueError(
_(b'request for bundle10 must include changegroup')
)
if kwargs:
raise ValueError(
_(b'unsupported getbundle arguments: %s')
% b', '.join(sorted(kwargs.keys()))
)
outgoing = _computeoutgoing(repo, heads, common)
info[b'bundleversion'] = 1
return (
info,
changegroup.makestream(
repo,
outgoing,
b'01',
source,
bundlecaps=bundlecaps,
remote_sidedata=remote_sidedata,
),
)
# bundle20 case
info[b'bundleversion'] = 2
b2caps = {}
for bcaps in bundlecaps:
if bcaps.startswith(b'bundle2='):
blob = urlreq.unquote(bcaps[len(b'bundle2=') :])
b2caps.update(bundle2.decodecaps(blob))
bundler = bundle2.bundle20(repo.ui, b2caps)
kwargs[b'heads'] = heads
kwargs[b'common'] = common
for name in getbundle2partsorder:
func = getbundle2partsmapping[name]
func(
bundler,
repo,
source,
bundlecaps=bundlecaps,
b2caps=b2caps,
remote_sidedata=remote_sidedata,
**pycompat.strkwargs(kwargs)
)
info[b'prefercompressed'] = bundler.prefercompressed
return info, bundler.getchunks()
@getbundle2partsgenerator(b'stream')
def _getbundlestream2(bundler, repo, *args, **kwargs):
return bundle2.addpartbundlestream2(bundler, repo, **kwargs)
@getbundle2partsgenerator(b'changegroup')
def _getbundlechangegrouppart(
bundler,
repo,
source,
bundlecaps=None,
b2caps=None,
heads=None,
common=None,
remote_sidedata=None,
**kwargs
):
"""add a changegroup part to the requested bundle"""
if not kwargs.get('cg', True) or not b2caps:
return
version = b'01'
cgversions = b2caps.get(b'changegroup')
if cgversions: # 3.1 and 3.2 ship with an empty value
cgversions = [
v
for v in cgversions
if v in changegroup.supportedoutgoingversions(repo)
]
if not cgversions:
raise error.Abort(_(b'no common changegroup version'))
version = max(cgversions)
outgoing = _computeoutgoing(repo, heads, common)
if not outgoing.missing:
return
if kwargs.get('narrow', False):
include = sorted(filter(bool, kwargs.get('includepats', [])))
exclude = sorted(filter(bool, kwargs.get('excludepats', [])))
matcher = narrowspec.match(repo.root, include=include, exclude=exclude)
else:
matcher = None
cgstream = changegroup.makestream(
repo,
outgoing,
version,
source,
bundlecaps=bundlecaps,
matcher=matcher,
remote_sidedata=remote_sidedata,
)
part = bundler.newpart(b'changegroup', data=cgstream)
if cgversions:
part.addparam(b'version', version)
part.addparam(b'nbchanges', b'%d' % len(outgoing.missing), mandatory=False)
if scmutil.istreemanifest(repo):
part.addparam(b'treemanifest', b'1')
if repository.REPO_FEATURE_SIDE_DATA in repo.features:
part.addparam(b'exp-sidedata', b'1')
sidedata = bundle2.format_remote_wanted_sidedata(repo)
part.addparam(b'exp-wanted-sidedata', sidedata)
if (
kwargs.get('narrow', False)
and kwargs.get('narrow_acl', False)
and (include or exclude)
):
# this is mandatory because otherwise ACL clients won't work
narrowspecpart = bundler.newpart(b'Narrow:responsespec')
narrowspecpart.data = b'%s\0%s' % (
b'\n'.join(include),
b'\n'.join(exclude),
)
@getbundle2partsgenerator(b'bookmarks')
def _getbundlebookmarkpart(
bundler, repo, source, bundlecaps=None, b2caps=None, **kwargs
):
"""add a bookmark part to the requested bundle"""
if not kwargs.get('bookmarks', False):
return
if not b2caps or b'bookmarks' not in b2caps:
raise error.Abort(_(b'no common bookmarks exchange method'))
books = bookmod.listbinbookmarks(repo)
data = bookmod.binaryencode(repo, books)
if data:
bundler.newpart(b'bookmarks', data=data)
@getbundle2partsgenerator(b'listkeys')
def _getbundlelistkeysparts(
bundler, repo, source, bundlecaps=None, b2caps=None, **kwargs
):
"""add parts containing listkeys namespaces to the requested bundle"""
listkeys = kwargs.get('listkeys', ())
for namespace in listkeys:
part = bundler.newpart(b'listkeys')
part.addparam(b'namespace', namespace)
keys = repo.listkeys(namespace).items()
part.data = pushkey.encodekeys(keys)
@getbundle2partsgenerator(b'obsmarkers')
def _getbundleobsmarkerpart(
bundler, repo, source, bundlecaps=None, b2caps=None, heads=None, **kwargs
):
"""add an obsolescence markers part to the requested bundle"""
if kwargs.get('obsmarkers', False):
if heads is None:
heads = repo.heads()
subset = [c.node() for c in repo.set(b'::%ln', heads)]
markers = repo.obsstore.relevantmarkers(subset)
markers = obsutil.sortedmarkers(markers)
bundle2.buildobsmarkerspart(bundler, markers)
@getbundle2partsgenerator(b'phases')
def _getbundlephasespart(
bundler, repo, source, bundlecaps=None, b2caps=None, heads=None, **kwargs
):
"""add phase heads part to the requested bundle"""
if kwargs.get('phases', False):
if not b2caps or b'heads' not in b2caps.get(b'phases'):
raise error.Abort(_(b'no common phases exchange method'))
if heads is None:
heads = repo.heads()
headsbyphase = collections.defaultdict(set)
if repo.publishing():
headsbyphase[phases.public] = heads
else:
# find the appropriate heads to move
phase = repo._phasecache.phase
node = repo.changelog.node
rev = repo.changelog.rev
for h in heads:
headsbyphase[phase(repo, rev(h))].add(h)
seenphases = list(headsbyphase.keys())
# We do not handle anything but public and draft phase for now)
if seenphases:
assert max(seenphases) <= phases.draft
# if client is pulling non-public changesets, we need to find
# intermediate public heads.
draftheads = headsbyphase.get(phases.draft, set())
if draftheads:
publicheads = headsbyphase.get(phases.public, set())
revset = b'heads(only(%ln, %ln) and public())'
extraheads = repo.revs(revset, draftheads, publicheads)
for r in extraheads:
headsbyphase[phases.public].add(node(r))
# transform data in a format used by the encoding function
phasemapping = {
phase: sorted(headsbyphase[phase]) for phase in phases.allphases
}
# generate the actual part
phasedata = phases.binaryencode(phasemapping)
bundler.newpart(b'phase-heads', data=phasedata)
@getbundle2partsgenerator(b'hgtagsfnodes')
def _getbundletagsfnodes(
bundler,
repo,
source,
bundlecaps=None,
b2caps=None,
heads=None,
common=None,
**kwargs
):
"""Transfer the .hgtags filenodes mapping.
Only values for heads in this bundle will be transferred.
The part data consists of pairs of 20 byte changeset node and .hgtags
filenodes raw values.
"""
# Don't send unless:
# - changeset are being exchanged,
# - the client supports it.
if not b2caps or not (kwargs.get('cg', True) and b'hgtagsfnodes' in b2caps):
return
outgoing = _computeoutgoing(repo, heads, common)
bundle2.addparttagsfnodescache(repo, bundler, outgoing)
@getbundle2partsgenerator(b'cache:rev-branch-cache')
def _getbundlerevbranchcache(
bundler,
repo,
source,
bundlecaps=None,
b2caps=None,
heads=None,
common=None,
**kwargs
):
"""Transfer the rev-branch-cache mapping
The payload is a series of data related to each branch
1) branch name length
2) number of open heads
3) number of closed heads
4) open heads nodes
5) closed heads nodes
"""
# Don't send unless:
# - changeset are being exchanged,
# - the client supports it.
# - narrow bundle isn't in play (not currently compatible).
if (
not kwargs.get('cg', True)
or not b2caps
or b'rev-branch-cache' not in b2caps
or kwargs.get('narrow', False)
or repo.ui.has_section(_NARROWACL_SECTION)
):
return
outgoing = _computeoutgoing(repo, heads, common)
bundle2.addpartrevbranchcache(repo, bundler, outgoing)
def check_heads(repo, their_heads, context):
"""check if the heads of a repo have been modified
Used by peer for unbundling.
"""
heads = repo.heads()
heads_hash = hashutil.sha1(b''.join(sorted(heads))).digest()
if not (
their_heads == [b'force']
or their_heads == heads
or their_heads == [b'hashed', heads_hash]
):
# someone else committed/pushed/unbundled while we
# were transferring data
raise error.PushRaced(
b'repository changed while %s - please try again' % context
)
def unbundle(repo, cg, heads, source, url):
"""Apply a bundle to a repo.
this function makes sure the repo is locked during the application and have
mechanism to check that no push race occurred between the creation of the
bundle and its application.
If the push was raced as PushRaced exception is raised."""
r = 0
# need a transaction when processing a bundle2 stream
# [wlock, lock, tr] - needs to be an array so nested functions can modify it
lockandtr = [None, None, None]
recordout = None
# quick fix for output mismatch with bundle2 in 3.4
captureoutput = repo.ui.configbool(
b'experimental', b'bundle2-output-capture'
)
if url.startswith(b'remote:http:') or url.startswith(b'remote:https:'):
captureoutput = True
try:
# note: outside bundle1, 'heads' is expected to be empty and this
# 'check_heads' call wil be a no-op
check_heads(repo, heads, b'uploading changes')
# push can proceed
if not isinstance(cg, bundle2.unbundle20):
# legacy case: bundle1 (changegroup 01)
txnname = b"\n".join([source, urlutil.hidepassword(url)])
with repo.lock(), repo.transaction(txnname) as tr:
op = bundle2.applybundle(repo, cg, tr, source, url)
r = bundle2.combinechangegroupresults(op)
else:
r = None
try:
def gettransaction():
if not lockandtr[2]:
if not bookmod.bookmarksinstore(repo):
lockandtr[0] = repo.wlock()
lockandtr[1] = repo.lock()
lockandtr[2] = repo.transaction(source)
lockandtr[2].hookargs[b'source'] = source
lockandtr[2].hookargs[b'url'] = url
lockandtr[2].hookargs[b'bundle2'] = b'1'
return lockandtr[2]
# Do greedy locking by default until we're satisfied with lazy
# locking.
if not repo.ui.configbool(
b'experimental', b'bundle2lazylocking'
):
gettransaction()
op = bundle2.bundleoperation(
repo,
gettransaction,
captureoutput=captureoutput,
source=b'push',
)
try:
op = bundle2.processbundle(repo, cg, op=op)
finally:
r = op.reply
if captureoutput and r is not None:
repo.ui.pushbuffer(error=True, subproc=True)
def recordout(output):
r.newpart(b'output', data=output, mandatory=False)
if lockandtr[2] is not None:
lockandtr[2].close()
except BaseException as exc:
exc.duringunbundle2 = True
if captureoutput and r is not None:
parts = exc._bundle2salvagedoutput = r.salvageoutput()
def recordout(output):
part = bundle2.bundlepart(
b'output', data=output, mandatory=False
)
parts.append(part)
raise
finally:
lockmod.release(lockandtr[2], lockandtr[1], lockandtr[0])
if recordout is not None:
recordout(repo.ui.popbuffer())
return r
def _maybeapplyclonebundle(pullop):
"""Apply a clone bundle from a remote, if possible."""
repo = pullop.repo
remote = pullop.remote
if not repo.ui.configbool(b'ui', b'clonebundles'):
return
# Only run if local repo is empty.
if len(repo):
return
if pullop.heads:
return
if not remote.capable(b'clonebundles'):
return
with remote.commandexecutor() as e:
res = e.callcommand(b'clonebundles', {}).result()
# If we call the wire protocol command, that's good enough to record the
# attempt.
pullop.clonebundleattempted = True
entries = bundlecaches.parseclonebundlesmanifest(repo, res)
if not entries:
repo.ui.note(
_(
b'no clone bundles available on remote; '
b'falling back to regular clone\n'
)
)
return
entries = bundlecaches.filterclonebundleentries(
repo, entries, streamclonerequested=pullop.streamclonerequested
)
if not entries:
# There is a thundering herd concern here. However, if a server
# operator doesn't advertise bundles appropriate for its clients,
# they deserve what's coming. Furthermore, from a client's
# perspective, no automatic fallback would mean not being able to
# clone!
repo.ui.warn(
_(
b'no compatible clone bundles available on server; '
b'falling back to regular clone\n'
)
)
repo.ui.warn(
_(b'(you may want to report this to the server operator)\n')
)
return
entries = bundlecaches.sortclonebundleentries(repo.ui, entries)
url = entries[0][b'URL']
repo.ui.status(_(b'applying clone bundle from %s\n') % url)
if trypullbundlefromurl(repo.ui, repo, url, remote):
repo.ui.status(_(b'finished applying clone bundle\n'))
# Bundle failed.
#
# We abort by default to avoid the thundering herd of
# clients flooding a server that was expecting expensive
# clone load to be offloaded.
elif repo.ui.configbool(b'ui', b'clonebundlefallback'):
repo.ui.warn(_(b'falling back to normal clone\n'))
else:
raise error.Abort(
_(b'error applying bundle'),
hint=_(
b'if this error persists, consider contacting '
b'the server operator or disable clone '
b'bundles via '
b'"--config ui.clonebundles=false"'
),
)
def inline_clone_bundle_open(ui, url, peer):
if not peer:
raise error.Abort(_(b'no remote repository supplied for %s' % url))
clonebundleid = url[len(bundlecaches.CLONEBUNDLESCHEME) :]
peerclonebundle = peer.get_cached_bundle_inline(clonebundleid)
return util.chunkbuffer(peerclonebundle)
def trypullbundlefromurl(ui, repo, url, peer):
"""Attempt to apply a bundle from a URL."""
with repo.lock(), repo.transaction(b'bundleurl') as tr:
try:
if url.startswith(bundlecaches.CLONEBUNDLESCHEME):
fh = inline_clone_bundle_open(ui, url, peer)
else:
fh = urlmod.open(ui, url)
cg = readbundle(ui, fh, b'stream')
if isinstance(cg, streamclone.streamcloneapplier):
cg.apply(repo)
else:
bundle2.applybundle(repo, cg, tr, b'clonebundles', url)
return True
except urlerr.httperror as e:
ui.warn(
_(b'HTTP error fetching bundle: %s\n')
% stringutil.forcebytestr(e)
)
except urlerr.urlerror as e:
ui.warn(
_(b'error fetching bundle: %s\n')
% stringutil.forcebytestr(e.reason)
)
return False