sapling/hgext3rd/reset.py
Jun Wu 99386e40fd inhibit: update existing code to work with the rewritten version
Summary:
debuginhibit was removed since we no longer have a separate inhibit state.

smartlog hack about changing "o" to "x" was removed since "obsolete()"
revset is correct and the hack is unnecessary now.

directaccess was removed from tests since inhibit does not depend on it.

`- obsolete()` was added to some revsets to avoid divergence and other
surprises.

Use `inhibit.revive` API in infinitepush and reset to revive changesets
properly.

Remove various hacky code that mangle inhibit state in corner cases.

Most test changes are `o` changed to `x` in output since we draw
`obsolete()` state correctly now. `test-infinitepush-backup-remotefilelog.t`
change was because output could be `bytes/sec` instead of `KB/sec`.

Test Plan: arc unit

Reviewers: #mercurial, kulshrax

Reviewed By: kulshrax

Subscribers: kulshrax, medson, mjpieters

Differential Revision: https://phabricator.intern.facebook.com/D5391361

Signature: t1:5391361:1499722618:d3c1cf629f0c59ecdf1dfd5e653c1eb6176646b8
2017-07-10 15:45:31 -07:00

235 lines
7.7 KiB
Python

# Copyright 2014 Facebook Inc.
#
"""reset the active bookmark and working copy to a desired revision"""
from mercurial.i18n import _
from mercurial.node import hex
from mercurial import extensions, merge, scmutil, hg
from mercurial import obsolete, repair, bundlerepo, error
from mercurial import exchange, phases, pycompat, registrar
from mercurial import lock as lockmod
import os, glob, binascii
cmdtable = {}
command = registrar.command(cmdtable)
testedwith = 'ships-with-fb-hgext'
def _isobsstoreenabled(repo):
return obsolete.isenabled(repo, obsolete.createmarkersopt)
def _isahash(rev):
try:
binascii.unhexlify(rev)
return True
except TypeError:
return False
@command("reset", [
('C', 'clean', None, _('wipe the working copy clean when resetting')),
('k', 'keep', None, _('keeps the old changesets the bookmark pointed'
' to')),
('r', 'rev', '', _('revision to reset to')),
], _('hg reset [REV]'))
def reset(ui, repo, *args, **opts):
"""moves the active bookmark and working copy parent to the desired rev
The reset command is for moving your active bookmark and working copy to a
different location. This is useful for undoing commits, amends, etc.
By default, the working copy content is not touched, so you will have
pending changes after the reset. If --clean/-C is specified, the working
copy contents will be overwritten to match the destination revision, and you
will not have any pending changes.
After your bookmark and working copy have been moved, the command will
delete any changesets that belonged only to that bookmark. Use --keep/-k to
avoid deleting any changesets.
"""
if args and args[0] and opts.get('rev'):
e = _('do not use both --rev and positional argument for revision')
raise error.Abort(e)
rev = opts.get('rev') or (args[0] if args else '.')
oldctx = repo['.']
wlock = None
try:
wlock = repo.wlock()
# Ensure we have an active bookmark
bookmark = bmactive(repo)
if not bookmark:
ui.warn(_('resetting without an active bookmark\n'))
ctx = _revive(repo, rev)
_moveto(repo, bookmark, ctx, clean=opts.get('clean'))
if not opts.get('keep'):
_deleteunreachable(repo, oldctx)
finally:
wlock.release()
def _revive(repo, rev):
"""Brings the given rev back into the repository. Finding it in backup
bundles if necessary.
"""
unfi = repo.unfiltered()
try:
ctx = unfi[rev]
except error.RepoLookupError:
# It could either be a revset or a stripped commit.
pass
else:
if ctx.obsolete():
try:
inhibit = extensions.find('inhibit')
except KeyError:
raise error.Abort(_('cannot revive %s - inhibit extension '
'is not enabled') % ctx)
else:
torevive = unfi.set('::%d & obsolete()', ctx.rev())
inhibit.revive(torevive, operation='reset')
try:
revs = scmutil.revrange(repo, [rev])
if len(revs) > 1:
raise error.Abort(_('exactly one revision must be specified'))
if len(revs) == 1:
return repo[revs.first()]
except error.RepoLookupError:
revs = []
return _pullbundle(repo, rev)
def _pullbundle(repo, rev):
"""Find the given rev in a backup bundle and pull it back into the
repository.
"""
other, rev = _findbundle(repo, rev)
if not other:
raise error.Abort("could not find '%s' in the repo or the backup"
" bundles" % rev)
lock = repo.lock()
try:
oldtip = len(repo)
exchange.pull(repo, other, heads=[rev])
tr = repo.transaction("phase")
nodes = (c.node() for c in repo.set('%d:', oldtip))
phases.retractboundary(repo, tr, 1, nodes)
tr.close()
finally:
lock.release()
if rev not in repo:
raise error.Abort("unable to get rev %s from repo" % rev)
return repo[rev]
def _findbundle(repo, rev):
"""Returns the backup bundle that contains the given rev. If found, it
returns the bundle peer and the full rev hash. If not found, it return None
and the given rev value.
"""
ui = repo.ui
backuppath = repo.vfs.join("strip-backup")
backups = filter(os.path.isfile, glob.glob(backuppath + "/*.hg"))
backups.sort(key=lambda x: os.path.getmtime(x), reverse=True)
for backup in backups:
# Much of this is copied from the hg incoming logic
source = os.path.relpath(backup, pycompat.getcwd())
source = ui.expandpath(source)
source, branches = hg.parseurl(source)
other = hg.peer(repo, {}, source)
quiet = ui.quiet
try:
ui.quiet = True
ret = bundlerepo.getremotechanges(ui, repo, other, None, None, None)
localother, chlist, cleanupfn = ret
for node in chlist:
if hex(node).startswith(rev):
return other, node
except error.LookupError:
continue
finally:
ui.quiet = quiet
return None, rev
def _moveto(repo, bookmark, ctx, clean=False):
"""Moves the given bookmark and the working copy to the given revision.
By default it does not overwrite the working copy contents unless clean is
True.
Assumes the wlock is already taken.
"""
# Move working copy over
if clean:
merge.update(repo, ctx.node(),
False, # not a branchmerge
True, # force overwriting files
None) # not a partial update
else:
# Mark any files that are different between the two as normal-lookup
# so they show up correctly in hg status afterwards.
wctx = repo[None]
m1 = wctx.manifest()
m2 = ctx.manifest()
diff = m1.diff(m2)
changedfiles = []
changedfiles.extend(diff.iterkeys())
dirstate = repo.dirstate
dirchanges = [f for f in dirstate if dirstate[f] != 'n']
changedfiles.extend(dirchanges)
if changedfiles or ctx.node() != repo['.'].node():
with dirstate.parentchange():
dirstate.rebuild(ctx.node(), m2, changedfiles)
# Move bookmark over
if bookmark:
lock = tr = None
try:
lock = repo.lock()
tr = repo.transaction('reset')
repo._bookmarks[bookmark] = ctx.node()
repo._bookmarks.recordchange(tr)
tr.close()
finally:
lockmod.release(lock, tr)
def _deleteunreachable(repo, ctx):
"""Deletes all ancestor and descendant commits of the given revision that
aren't reachable from another bookmark.
"""
keepheads = "bookmark() + ."
try:
extensions.find('remotenames')
keepheads += " + remotenames()"
except KeyError:
pass
hiderevs = repo.revs('::%s - ::(%r)', ctx.rev(), keepheads)
if hiderevs:
lock = None
try:
lock = repo.lock()
if _isobsstoreenabled(repo):
markers = []
for rev in hiderevs:
markers.append((repo[rev], ()))
obsolete.createmarkers(repo, markers)
repo.ui.status(_("%d changesets pruned\n") % len(hiderevs))
else:
repair.strip(repo.ui, repo,
[repo.changelog.node(r) for r in hiderevs])
finally:
lockmod.release(lock)
### bookmarks api compatibility layer ###
def bmactive(repo):
try:
return repo._activebookmark
except AttributeError:
return repo._bookmarkcurrent