destutil: if wdp is obsolete, update to the closest non-obsolete ancestor
As the original comments suggest, using prune as a model here was an existing
idea, and now this patch implements it.
I think it would be even better to do what solveobswdp() from evolve does (in
short, it allows to update to a successor of the closest ancestor even if that
ancestor is obsolete), but that is outside of this series' scope.
Differential Revision: https://phab.mercurial-scm.org/D12099
# narrowcommands.py - command modifications for narrowhg extension
#
# Copyright 2017 Google, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import itertools
import os
from mercurial.i18n import _
from mercurial.node import (
hex,
short,
)
from mercurial import (
bundle2,
cmdutil,
commands,
discovery,
encoding,
error,
exchange,
extensions,
hg,
narrowspec,
pathutil,
pycompat,
registrar,
repair,
repoview,
requirements,
sparse,
util,
wireprototypes,
)
from mercurial.utils import (
urlutil,
)
table = {}
command = registrar.command(table)
def setup():
"""Wraps user-facing mercurial commands with narrow-aware versions."""
entry = extensions.wrapcommand(commands.table, b'clone', clonenarrowcmd)
entry[1].append(
(b'', b'narrow', None, _(b"create a narrow clone of select files"))
)
entry[1].append(
(
b'',
b'depth',
b'',
_(b"limit the history fetched by distance from heads"),
)
)
entry[1].append((b'', b'narrowspec', b'', _(b"read narrowspecs from file")))
# TODO(durin42): unify sparse/narrow --include/--exclude logic a bit
if b'sparse' not in extensions.enabled():
entry[1].append(
(b'', b'include', [], _(b"specifically fetch this file/directory"))
)
entry[1].append(
(
b'',
b'exclude',
[],
_(b"do not fetch this file/directory, even if included"),
)
)
entry = extensions.wrapcommand(commands.table, b'pull', pullnarrowcmd)
entry[1].append(
(
b'',
b'depth',
b'',
_(b"limit the history fetched by distance from heads"),
)
)
extensions.wrapcommand(commands.table, b'archive', archivenarrowcmd)
def clonenarrowcmd(orig, ui, repo, *args, **opts):
"""Wraps clone command, so 'hg clone' first wraps localrepo.clone()."""
opts = pycompat.byteskwargs(opts)
wrappedextraprepare = util.nullcontextmanager()
narrowspecfile = opts[b'narrowspec']
if narrowspecfile:
filepath = os.path.join(encoding.getcwd(), narrowspecfile)
ui.status(_(b"reading narrowspec from '%s'\n") % filepath)
try:
fdata = util.readfile(filepath)
except IOError as inst:
raise error.Abort(
_(b"cannot read narrowspecs from '%s': %s")
% (filepath, encoding.strtolocal(inst.strerror))
)
includes, excludes, profiles = sparse.parseconfig(ui, fdata, b'narrow')
if profiles:
raise error.ConfigError(
_(
b"cannot specify other files using '%include' in"
b" narrowspec"
)
)
narrowspec.validatepatterns(includes)
narrowspec.validatepatterns(excludes)
# narrowspec is passed so we should assume that user wants narrow clone
opts[b'narrow'] = True
opts[b'include'].extend(includes)
opts[b'exclude'].extend(excludes)
if opts[b'narrow']:
def pullbundle2extraprepare_widen(orig, pullop, kwargs):
orig(pullop, kwargs)
if opts.get(b'depth'):
kwargs[b'depth'] = opts[b'depth']
wrappedextraprepare = extensions.wrappedfunction(
exchange, b'_pullbundle2extraprepare', pullbundle2extraprepare_widen
)
with wrappedextraprepare:
return orig(ui, repo, *args, **pycompat.strkwargs(opts))
def pullnarrowcmd(orig, ui, repo, *args, **opts):
"""Wraps pull command to allow modifying narrow spec."""
wrappedextraprepare = util.nullcontextmanager()
if requirements.NARROW_REQUIREMENT in repo.requirements:
def pullbundle2extraprepare_widen(orig, pullop, kwargs):
orig(pullop, kwargs)
if opts.get('depth'):
kwargs[b'depth'] = opts['depth']
wrappedextraprepare = extensions.wrappedfunction(
exchange, b'_pullbundle2extraprepare', pullbundle2extraprepare_widen
)
with wrappedextraprepare:
return orig(ui, repo, *args, **opts)
def archivenarrowcmd(orig, ui, repo, *args, **opts):
"""Wraps archive command to narrow the default includes."""
if requirements.NARROW_REQUIREMENT in repo.requirements:
repo_includes, repo_excludes = repo.narrowpats
includes = set(opts.get('include', []))
excludes = set(opts.get('exclude', []))
includes, excludes, unused_invalid = narrowspec.restrictpatterns(
includes, excludes, repo_includes, repo_excludes
)
if includes:
opts['include'] = includes
if excludes:
opts['exclude'] = excludes
return orig(ui, repo, *args, **opts)
def pullbundle2extraprepare(orig, pullop, kwargs):
repo = pullop.repo
if requirements.NARROW_REQUIREMENT not in repo.requirements:
return orig(pullop, kwargs)
if wireprototypes.NARROWCAP not in pullop.remote.capabilities():
raise error.Abort(_(b"server does not support narrow clones"))
orig(pullop, kwargs)
kwargs[b'narrow'] = True
include, exclude = repo.narrowpats
kwargs[b'oldincludepats'] = include
kwargs[b'oldexcludepats'] = exclude
if include:
kwargs[b'includepats'] = include
if exclude:
kwargs[b'excludepats'] = exclude
# calculate known nodes only in ellipses cases because in non-ellipses cases
# we have all the nodes
if wireprototypes.ELLIPSESCAP1 in pullop.remote.capabilities():
kwargs[b'known'] = [
hex(ctx.node())
for ctx in repo.set(b'::%ln', pullop.common)
if ctx.node() != repo.nullid
]
if not kwargs[b'known']:
# Mercurial serializes an empty list as '' and deserializes it as
# [''], so delete it instead to avoid handling the empty string on
# the server.
del kwargs[b'known']
extensions.wrapfunction(
exchange, b'_pullbundle2extraprepare', pullbundle2extraprepare
)
def _narrow(
ui,
repo,
remote,
commoninc,
oldincludes,
oldexcludes,
newincludes,
newexcludes,
force,
backup,
):
oldmatch = narrowspec.match(repo.root, oldincludes, oldexcludes)
newmatch = narrowspec.match(repo.root, newincludes, newexcludes)
# This is essentially doing "hg outgoing" to find all local-only
# commits. We will then check that the local-only commits don't
# have any changes to files that will be untracked.
unfi = repo.unfiltered()
outgoing = discovery.findcommonoutgoing(unfi, remote, commoninc=commoninc)
ui.status(_(b'looking for local changes to affected paths\n'))
progress = ui.makeprogress(
topic=_(b'changesets'),
unit=_(b'changesets'),
total=len(outgoing.missing) + len(outgoing.excluded),
)
localnodes = []
with progress:
for n in itertools.chain(outgoing.missing, outgoing.excluded):
progress.increment()
if any(oldmatch(f) and not newmatch(f) for f in unfi[n].files()):
localnodes.append(n)
revstostrip = unfi.revs(b'descendants(%ln)', localnodes)
hiddenrevs = repoview.filterrevs(repo, b'visible')
visibletostrip = list(
repo.changelog.node(r) for r in (revstostrip - hiddenrevs)
)
if visibletostrip:
ui.status(
_(
b'The following changeset(s) or their ancestors have '
b'local changes not on the remote:\n'
)
)
maxnodes = 10
if ui.verbose or len(visibletostrip) <= maxnodes:
for n in visibletostrip:
ui.status(b'%s\n' % short(n))
else:
for n in visibletostrip[:maxnodes]:
ui.status(b'%s\n' % short(n))
ui.status(
_(b'...and %d more, use --verbose to list all\n')
% (len(visibletostrip) - maxnodes)
)
if not force:
raise error.StateError(
_(b'local changes found'),
hint=_(b'use --force-delete-local-changes to ignore'),
)
with ui.uninterruptible():
if revstostrip:
tostrip = [unfi.changelog.node(r) for r in revstostrip]
if repo[b'.'].node() in tostrip:
# stripping working copy, so move to a different commit first
urev = max(
repo.revs(
b'(::%n) - %ln + null',
repo[b'.'].node(),
visibletostrip,
)
)
hg.clean(repo, urev)
overrides = {(b'devel', b'strip-obsmarkers'): False}
if backup:
ui.status(_(b'moving unwanted changesets to backup\n'))
else:
ui.status(_(b'deleting unwanted changesets\n'))
with ui.configoverride(overrides, b'narrow'):
repair.strip(ui, unfi, tostrip, topic=b'narrow', backup=backup)
todelete = []
for t, f, size in repo.store.datafiles():
if f.startswith(b'data/'):
file = f[5:-2]
if not newmatch(file):
todelete.append(f)
elif f.startswith(b'meta/'):
dir = f[5:-13]
dirs = sorted(pathutil.dirs({dir})) + [dir]
include = True
for d in dirs:
visit = newmatch.visitdir(d)
if not visit:
include = False
break
if visit == b'all':
break
if not include:
todelete.append(f)
repo.destroying()
with repo.transaction(b'narrowing'):
# Update narrowspec before removing revlogs, so repo won't be
# corrupt in case of crash
repo.setnarrowpats(newincludes, newexcludes)
for f in todelete:
ui.status(_(b'deleting %s\n') % f)
util.unlinkpath(repo.svfs.join(f))
repo.store.markremoved(f)
ui.status(_(b'deleting unwanted files from working copy\n'))
with repo.dirstate.parentchange():
narrowspec.updateworkingcopy(repo, assumeclean=True)
narrowspec.copytoworkingcopy(repo)
repo.destroyed()
def _widen(
ui,
repo,
remote,
commoninc,
oldincludes,
oldexcludes,
newincludes,
newexcludes,
):
# for now we assume that if a server has ellipses enabled, we will be
# exchanging ellipses nodes. In future we should add ellipses as a client
# side requirement (maybe) to distinguish a client is shallow or not and
# then send that information to server whether we want ellipses or not.
# Theoretically a non-ellipses repo should be able to use narrow
# functionality from an ellipses enabled server
remotecap = remote.capabilities()
ellipsesremote = any(
cap in remotecap for cap in wireprototypes.SUPPORTED_ELLIPSESCAP
)
# check whether we are talking to a server which supports old version of
# ellipses capabilities
isoldellipses = (
ellipsesremote
and wireprototypes.ELLIPSESCAP1 in remotecap
and wireprototypes.ELLIPSESCAP not in remotecap
)
def pullbundle2extraprepare_widen(orig, pullop, kwargs):
orig(pullop, kwargs)
# The old{in,ex}cludepats have already been set by orig()
kwargs[b'includepats'] = newincludes
kwargs[b'excludepats'] = newexcludes
wrappedextraprepare = extensions.wrappedfunction(
exchange, b'_pullbundle2extraprepare', pullbundle2extraprepare_widen
)
# define a function that narrowbundle2 can call after creating the
# backup bundle, but before applying the bundle from the server
def setnewnarrowpats():
repo.setnarrowpats(newincludes, newexcludes)
repo.setnewnarrowpats = setnewnarrowpats
# silence the devel-warning of applying an empty changegroup
overrides = {(b'devel', b'all-warnings'): False}
common = commoninc[0]
with ui.uninterruptible():
if ellipsesremote:
ds = repo.dirstate
p1, p2 = ds.p1(), ds.p2()
with ds.parentchange():
ds.setparents(repo.nullid, repo.nullid)
if isoldellipses:
with wrappedextraprepare:
exchange.pull(repo, remote, heads=common)
else:
known = []
if ellipsesremote:
known = [
ctx.node()
for ctx in repo.set(b'::%ln', common)
if ctx.node() != repo.nullid
]
with remote.commandexecutor() as e:
bundle = e.callcommand(
b'narrow_widen',
{
b'oldincludes': oldincludes,
b'oldexcludes': oldexcludes,
b'newincludes': newincludes,
b'newexcludes': newexcludes,
b'cgversion': b'03',
b'commonheads': common,
b'known': known,
b'ellipses': ellipsesremote,
},
).result()
trmanager = exchange.transactionmanager(
repo, b'widen', remote.url()
)
with trmanager, repo.ui.configoverride(overrides, b'widen'):
op = bundle2.bundleoperation(
repo, trmanager.transaction, source=b'widen'
)
# TODO: we should catch error.Abort here
bundle2.processbundle(repo, bundle, op=op)
if ellipsesremote:
with ds.parentchange():
ds.setparents(p1, p2)
with repo.transaction(b'widening'), repo.dirstate.parentchange():
repo.setnewnarrowpats()
narrowspec.updateworkingcopy(repo)
narrowspec.copytoworkingcopy(repo)
# TODO(rdamazio): Make new matcher format and update description
@command(
b'tracked',
[
(b'', b'addinclude', [], _(b'new paths to include')),
(b'', b'removeinclude', [], _(b'old paths to no longer include')),
(
b'',
b'auto-remove-includes',
False,
_(b'automatically choose unused includes to remove'),
),
(b'', b'addexclude', [], _(b'new paths to exclude')),
(b'', b'import-rules', b'', _(b'import narrowspecs from a file')),
(b'', b'removeexclude', [], _(b'old paths to no longer exclude')),
(
b'',
b'clear',
False,
_(b'whether to replace the existing narrowspec'),
),
(
b'',
b'force-delete-local-changes',
False,
_(b'forces deletion of local changes when narrowing'),
),
(
b'',
b'backup',
True,
_(b'back up local changes when narrowing'),
),
(
b'',
b'update-working-copy',
False,
_(b'update working copy when the store has changed'),
),
]
+ commands.remoteopts,
_(b'[OPTIONS]... [REMOTE]'),
inferrepo=True,
helpcategory=command.CATEGORY_MAINTENANCE,
)
def trackedcmd(ui, repo, remotepath=None, *pats, **opts):
"""show or change the current narrowspec
With no argument, shows the current narrowspec entries, one per line. Each
line will be prefixed with 'I' or 'X' for included or excluded patterns,
respectively.
The narrowspec is comprised of expressions to match remote files and/or
directories that should be pulled into your client.
The narrowspec has *include* and *exclude* expressions, with excludes always
trumping includes: that is, if a file matches an exclude expression, it will
be excluded even if it also matches an include expression.
Excluding files that were never included has no effect.
Each included or excluded entry is in the format described by
'hg help patterns'.
The options allow you to add or remove included and excluded expressions.
If --clear is specified, then all previous includes and excludes are DROPPED
and replaced by the new ones specified to --addinclude and --addexclude.
If --clear is specified without any further options, the narrowspec will be
empty and will not match any files.
If --auto-remove-includes is specified, then those includes that don't match
any files modified by currently visible local commits (those not shared by
the remote) will be added to the set of explicitly specified includes to
remove.
--import-rules accepts a path to a file containing rules, allowing you to
add --addinclude, --addexclude rules in bulk. Like the other include and
exclude switches, the changes are applied immediately.
"""
opts = pycompat.byteskwargs(opts)
if requirements.NARROW_REQUIREMENT not in repo.requirements:
raise error.InputError(
_(
b'the tracked command is only supported on '
b'repositories cloned with --narrow'
)
)
# Before supporting, decide whether it "hg tracked --clear" should mean
# tracking no paths or all paths.
if opts[b'clear']:
raise error.InputError(_(b'the --clear option is not yet supported'))
# import rules from a file
newrules = opts.get(b'import_rules')
if newrules:
try:
filepath = os.path.join(encoding.getcwd(), newrules)
fdata = util.readfile(filepath)
except IOError as inst:
raise error.StorageError(
_(b"cannot read narrowspecs from '%s': %s")
% (filepath, encoding.strtolocal(inst.strerror))
)
includepats, excludepats, profiles = sparse.parseconfig(
ui, fdata, b'narrow'
)
if profiles:
raise error.InputError(
_(
b"including other spec files using '%include' "
b"is not supported in narrowspec"
)
)
opts[b'addinclude'].extend(includepats)
opts[b'addexclude'].extend(excludepats)
addedincludes = narrowspec.parsepatterns(opts[b'addinclude'])
removedincludes = narrowspec.parsepatterns(opts[b'removeinclude'])
addedexcludes = narrowspec.parsepatterns(opts[b'addexclude'])
removedexcludes = narrowspec.parsepatterns(opts[b'removeexclude'])
autoremoveincludes = opts[b'auto_remove_includes']
update_working_copy = opts[b'update_working_copy']
only_show = not (
addedincludes
or removedincludes
or addedexcludes
or removedexcludes
or newrules
or autoremoveincludes
or update_working_copy
)
oldincludes, oldexcludes = repo.narrowpats
# filter the user passed additions and deletions into actual additions and
# deletions of excludes and includes
addedincludes -= oldincludes
removedincludes &= oldincludes
addedexcludes -= oldexcludes
removedexcludes &= oldexcludes
widening = addedincludes or removedexcludes
narrowing = removedincludes or addedexcludes
# Only print the current narrowspec.
if only_show:
ui.pager(b'tracked')
fm = ui.formatter(b'narrow', opts)
for i in sorted(oldincludes):
fm.startitem()
fm.write(b'status', b'%s ', b'I', label=b'narrow.included')
fm.write(b'pat', b'%s\n', i, label=b'narrow.included')
for i in sorted(oldexcludes):
fm.startitem()
fm.write(b'status', b'%s ', b'X', label=b'narrow.excluded')
fm.write(b'pat', b'%s\n', i, label=b'narrow.excluded')
fm.end()
return 0
if update_working_copy:
with repo.wlock(), repo.lock(), repo.transaction(
b'narrow-wc'
), repo.dirstate.parentchange():
narrowspec.updateworkingcopy(repo)
narrowspec.copytoworkingcopy(repo)
return 0
if not (widening or narrowing or autoremoveincludes):
ui.status(_(b"nothing to widen or narrow\n"))
return 0
with repo.wlock(), repo.lock():
cmdutil.bailifchanged(repo)
# Find the revisions we have in common with the remote. These will
# be used for finding local-only changes for narrowing. They will
# also define the set of revisions to update for widening.
r = urlutil.get_unique_pull_path(b'tracked', repo, ui, remotepath)
url, branches = r
ui.status(_(b'comparing with %s\n') % urlutil.hidepassword(url))
remote = hg.peer(repo, opts, url)
try:
# check narrow support before doing anything if widening needs to be
# performed. In future we should also abort if client is ellipses and
# server does not support ellipses
if (
widening
and wireprototypes.NARROWCAP not in remote.capabilities()
):
raise error.Abort(_(b"server does not support narrow clones"))
commoninc = discovery.findcommonincoming(repo, remote)
if autoremoveincludes:
outgoing = discovery.findcommonoutgoing(
repo, remote, commoninc=commoninc
)
ui.status(_(b'looking for unused includes to remove\n'))
localfiles = set()
for n in itertools.chain(outgoing.missing, outgoing.excluded):
localfiles.update(repo[n].files())
suggestedremovals = []
for include in sorted(oldincludes):
match = narrowspec.match(repo.root, [include], oldexcludes)
if not any(match(f) for f in localfiles):
suggestedremovals.append(include)
if suggestedremovals:
for s in suggestedremovals:
ui.status(b'%s\n' % s)
if (
ui.promptchoice(
_(
b'remove these unused includes (yn)?'
b'$$ &Yes $$ &No'
)
)
== 0
):
removedincludes.update(suggestedremovals)
narrowing = True
else:
ui.status(_(b'found no unused includes\n'))
if narrowing:
newincludes = oldincludes - removedincludes
newexcludes = oldexcludes | addedexcludes
_narrow(
ui,
repo,
remote,
commoninc,
oldincludes,
oldexcludes,
newincludes,
newexcludes,
opts[b'force_delete_local_changes'],
opts[b'backup'],
)
# _narrow() updated the narrowspec and _widen() below needs to
# use the updated values as its base (otherwise removed includes
# and addedexcludes will be lost in the resulting narrowspec)
oldincludes = newincludes
oldexcludes = newexcludes
if widening:
newincludes = oldincludes | addedincludes
newexcludes = oldexcludes - removedexcludes
_widen(
ui,
repo,
remote,
commoninc,
oldincludes,
oldexcludes,
newincludes,
newexcludes,
)
finally:
remote.close()
return 0