|
|
# repair.py - functions for repository repair for mercurial
|
|
|
#
|
|
|
# Copyright 2005, 2006 Chris Mason <mason@suse.com>
|
|
|
# Copyright 2007 Matt Mackall
|
|
|
#
|
|
|
# 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 errno
|
|
|
import hashlib
|
|
|
|
|
|
from .i18n import _
|
|
|
from .node import (
|
|
|
hex,
|
|
|
short,
|
|
|
)
|
|
|
from . import (
|
|
|
bundle2,
|
|
|
changegroup,
|
|
|
discovery,
|
|
|
error,
|
|
|
exchange,
|
|
|
obsolete,
|
|
|
obsutil,
|
|
|
util,
|
|
|
)
|
|
|
from .utils import (
|
|
|
stringutil,
|
|
|
)
|
|
|
|
|
|
def backupbundle(repo, bases, heads, node, suffix, compress=True,
|
|
|
obsolescence=True):
|
|
|
"""create a bundle with the specified revisions as a backup"""
|
|
|
|
|
|
backupdir = "strip-backup"
|
|
|
vfs = repo.vfs
|
|
|
if not vfs.isdir(backupdir):
|
|
|
vfs.mkdir(backupdir)
|
|
|
|
|
|
# Include a hash of all the nodes in the filename for uniqueness
|
|
|
allcommits = repo.set('%ln::%ln', bases, heads)
|
|
|
allhashes = sorted(c.hex() for c in allcommits)
|
|
|
totalhash = hashlib.sha1(''.join(allhashes)).digest()
|
|
|
name = "%s/%s-%s-%s.hg" % (backupdir, short(node),
|
|
|
hex(totalhash[:4]), suffix)
|
|
|
|
|
|
cgversion = changegroup.localversion(repo)
|
|
|
comp = None
|
|
|
if cgversion != '01':
|
|
|
bundletype = "HG20"
|
|
|
if compress:
|
|
|
comp = 'BZ'
|
|
|
elif compress:
|
|
|
bundletype = "HG10BZ"
|
|
|
else:
|
|
|
bundletype = "HG10UN"
|
|
|
|
|
|
outgoing = discovery.outgoing(repo, missingroots=bases, missingheads=heads)
|
|
|
contentopts = {
|
|
|
'cg.version': cgversion,
|
|
|
'obsolescence': obsolescence,
|
|
|
'phases': True,
|
|
|
}
|
|
|
return bundle2.writenewbundle(repo.ui, repo, 'strip', name, bundletype,
|
|
|
outgoing, contentopts, vfs, compression=comp)
|
|
|
|
|
|
def _collectfiles(repo, striprev):
|
|
|
"""find out the filelogs affected by the strip"""
|
|
|
files = set()
|
|
|
|
|
|
for x in xrange(striprev, len(repo)):
|
|
|
files.update(repo[x].files())
|
|
|
|
|
|
return sorted(files)
|
|
|
|
|
|
def _collectrevlog(revlog, striprev):
|
|
|
_, brokenset = revlog.getstrippoint(striprev)
|
|
|
return [revlog.linkrev(r) for r in brokenset]
|
|
|
|
|
|
def _collectmanifest(repo, striprev):
|
|
|
return _collectrevlog(repo.manifestlog._revlog, striprev)
|
|
|
|
|
|
def _collectbrokencsets(repo, files, striprev):
|
|
|
"""return the changesets which will be broken by the truncation"""
|
|
|
s = set()
|
|
|
|
|
|
s.update(_collectmanifest(repo, striprev))
|
|
|
for fname in files:
|
|
|
s.update(_collectrevlog(repo.file(fname), striprev))
|
|
|
|
|
|
return s
|
|
|
|
|
|
def strip(ui, repo, nodelist, backup=True, topic='backup'):
|
|
|
# This function requires the caller to lock the repo, but it operates
|
|
|
# within a transaction of its own, and thus requires there to be no current
|
|
|
# transaction when it is called.
|
|
|
if repo.currenttransaction() is not None:
|
|
|
raise error.ProgrammingError('cannot strip from inside a transaction')
|
|
|
|
|
|
# Simple way to maintain backwards compatibility for this
|
|
|
# argument.
|
|
|
if backup in ['none', 'strip']:
|
|
|
backup = False
|
|
|
|
|
|
repo = repo.unfiltered()
|
|
|
repo.destroying()
|
|
|
|
|
|
cl = repo.changelog
|
|
|
# TODO handle undo of merge sets
|
|
|
if isinstance(nodelist, str):
|
|
|
nodelist = [nodelist]
|
|
|
striplist = [cl.rev(node) for node in nodelist]
|
|
|
striprev = min(striplist)
|
|
|
|
|
|
files = _collectfiles(repo, striprev)
|
|
|
saverevs = _collectbrokencsets(repo, files, striprev)
|
|
|
|
|
|
# Some revisions with rev > striprev may not be descendants of striprev.
|
|
|
# We have to find these revisions and put them in a bundle, so that
|
|
|
# we can restore them after the truncations.
|
|
|
# To create the bundle we use repo.changegroupsubset which requires
|
|
|
# the list of heads and bases of the set of interesting revisions.
|
|
|
# (head = revision in the set that has no descendant in the set;
|
|
|
# base = revision in the set that has no ancestor in the set)
|
|
|
tostrip = set(striplist)
|
|
|
saveheads = set(saverevs)
|
|
|
for r in cl.revs(start=striprev + 1):
|
|
|
if any(p in tostrip for p in cl.parentrevs(r)):
|
|
|
tostrip.add(r)
|
|
|
|
|
|
if r not in tostrip:
|
|
|
saverevs.add(r)
|
|
|
saveheads.difference_update(cl.parentrevs(r))
|
|
|
saveheads.add(r)
|
|
|
saveheads = [cl.node(r) for r in saveheads]
|
|
|
|
|
|
# compute base nodes
|
|
|
if saverevs:
|
|
|
descendants = set(cl.descendants(saverevs))
|
|
|
saverevs.difference_update(descendants)
|
|
|
savebases = [cl.node(r) for r in saverevs]
|
|
|
stripbases = [cl.node(r) for r in tostrip]
|
|
|
|
|
|
stripobsidx = obsmarkers = ()
|
|
|
if repo.ui.configbool('devel', 'strip-obsmarkers'):
|
|
|
obsmarkers = obsutil.exclusivemarkers(repo, stripbases)
|
|
|
if obsmarkers:
|
|
|
stripobsidx = [i for i, m in enumerate(repo.obsstore)
|
|
|
if m in obsmarkers]
|
|
|
|
|
|
# For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), but
|
|
|
# is much faster
|
|
|
newbmtarget = repo.revs('max(parents(%ld) - (%ld))', tostrip, tostrip)
|
|
|
if newbmtarget:
|
|
|
newbmtarget = repo[newbmtarget.first()].node()
|
|
|
else:
|
|
|
newbmtarget = '.'
|
|
|
|
|
|
bm = repo._bookmarks
|
|
|
updatebm = []
|
|
|
for m in bm:
|
|
|
rev = repo[bm[m]].rev()
|
|
|
if rev in tostrip:
|
|
|
updatebm.append(m)
|
|
|
|
|
|
# create a changegroup for all the branches we need to keep
|
|
|
backupfile = None
|
|
|
vfs = repo.vfs
|
|
|
node = nodelist[-1]
|
|
|
if backup:
|
|
|
backupfile = backupbundle(repo, stripbases, cl.heads(), node, topic)
|
|
|
repo.ui.status(_("saved backup bundle to %s\n") %
|
|
|
vfs.join(backupfile))
|
|
|
repo.ui.log("backupbundle", "saved backup bundle to %s\n",
|
|
|
vfs.join(backupfile))
|
|
|
tmpbundlefile = None
|
|
|
if saveheads:
|
|
|
# do not compress temporary bundle if we remove it from disk later
|
|
|
#
|
|
|
# We do not include obsolescence, it might re-introduce prune markers
|
|
|
# we are trying to strip. This is harmless since the stripped markers
|
|
|
# are already backed up and we did not touched the markers for the
|
|
|
# saved changesets.
|
|
|
tmpbundlefile = backupbundle(repo, savebases, saveheads, node, 'temp',
|
|
|
compress=False, obsolescence=False)
|
|
|
|
|
|
try:
|
|
|
with repo.transaction("strip") as tr:
|
|
|
offset = len(tr.entries)
|
|
|
|
|
|
tr.startgroup()
|
|
|
cl.strip(striprev, tr)
|
|
|
stripmanifest(repo, striprev, tr, files)
|
|
|
|
|
|
for fn in files:
|
|
|
repo.file(fn).strip(striprev, tr)
|
|
|
tr.endgroup()
|
|
|
|
|
|
for i in xrange(offset, len(tr.entries)):
|
|
|
file, troffset, ignore = tr.entries[i]
|
|
|
with repo.svfs(file, 'a', checkambig=True) as fp:
|
|
|
fp.truncate(troffset)
|
|
|
if troffset == 0:
|
|
|
repo.store.markremoved(file)
|
|
|
|
|
|
deleteobsmarkers(repo.obsstore, stripobsidx)
|
|
|
del repo.obsstore
|
|
|
repo.invalidatevolatilesets()
|
|
|
repo._phasecache.filterunknown(repo)
|
|
|
|
|
|
if tmpbundlefile:
|
|
|
ui.note(_("adding branch\n"))
|
|
|
f = vfs.open(tmpbundlefile, "rb")
|
|
|
gen = exchange.readbundle(ui, f, tmpbundlefile, vfs)
|
|
|
if not repo.ui.verbose:
|
|
|
# silence internal shuffling chatter
|
|
|
repo.ui.pushbuffer()
|
|
|
tmpbundleurl = 'bundle:' + vfs.join(tmpbundlefile)
|
|
|
txnname = 'strip'
|
|
|
if not isinstance(gen, bundle2.unbundle20):
|
|
|
txnname = "strip\n%s" % util.hidepassword(tmpbundleurl)
|
|
|
with repo.transaction(txnname) as tr:
|
|
|
bundle2.applybundle(repo, gen, tr, source='strip',
|
|
|
url=tmpbundleurl)
|
|
|
if not repo.ui.verbose:
|
|
|
repo.ui.popbuffer()
|
|
|
f.close()
|
|
|
|
|
|
with repo.transaction('repair') as tr:
|
|
|
bmchanges = [(m, repo[newbmtarget].node()) for m in updatebm]
|
|
|
bm.applychanges(repo, tr, bmchanges)
|
|
|
|
|
|
# remove undo files
|
|
|
for undovfs, undofile in repo.undofiles():
|
|
|
try:
|
|
|
undovfs.unlink(undofile)
|
|
|
except OSError as e:
|
|
|
if e.errno != errno.ENOENT:
|
|
|
ui.warn(_('error removing %s: %s\n') %
|
|
|
(undovfs.join(undofile),
|
|
|
stringutil.forcebytestr(e)))
|
|
|
|
|
|
except: # re-raises
|
|
|
if backupfile:
|
|
|
ui.warn(_("strip failed, backup bundle stored in '%s'\n")
|
|
|
% vfs.join(backupfile))
|
|
|
if tmpbundlefile:
|
|
|
ui.warn(_("strip failed, unrecovered changes stored in '%s'\n")
|
|
|
% vfs.join(tmpbundlefile))
|
|
|
ui.warn(_("(fix the problem, then recover the changesets with "
|
|
|
"\"hg unbundle '%s'\")\n") % vfs.join(tmpbundlefile))
|
|
|
raise
|
|
|
else:
|
|
|
if tmpbundlefile:
|
|
|
# Remove temporary bundle only if there were no exceptions
|
|
|
vfs.unlink(tmpbundlefile)
|
|
|
|
|
|
repo.destroyed()
|
|
|
# return the backup file path (or None if 'backup' was False) so
|
|
|
# extensions can use it
|
|
|
return backupfile
|
|
|
|
|
|
def safestriproots(ui, repo, nodes):
|
|
|
"""return list of roots of nodes where descendants are covered by nodes"""
|
|
|
torev = repo.unfiltered().changelog.rev
|
|
|
revs = set(torev(n) for n in nodes)
|
|
|
# tostrip = wanted - unsafe = wanted - ancestors(orphaned)
|
|
|
# orphaned = affected - wanted
|
|
|
# affected = descendants(roots(wanted))
|
|
|
# wanted = revs
|
|
|
tostrip = set(repo.revs('%ld-(::((roots(%ld)::)-%ld))', revs, revs, revs))
|
|
|
notstrip = revs - tostrip
|
|
|
if notstrip:
|
|
|
nodestr = ', '.join(sorted(short(repo[n].node()) for n in notstrip))
|
|
|
ui.warn(_('warning: orphaned descendants detected, '
|
|
|
'not stripping %s\n') % nodestr)
|
|
|
return [c.node() for c in repo.set('roots(%ld)', tostrip)]
|
|
|
|
|
|
class stripcallback(object):
|
|
|
"""used as a transaction postclose callback"""
|
|
|
|
|
|
def __init__(self, ui, repo, backup, topic):
|
|
|
self.ui = ui
|
|
|
self.repo = repo
|
|
|
self.backup = backup
|
|
|
self.topic = topic or 'backup'
|
|
|
self.nodelist = []
|
|
|
|
|
|
def addnodes(self, nodes):
|
|
|
self.nodelist.extend(nodes)
|
|
|
|
|
|
def __call__(self, tr):
|
|
|
roots = safestriproots(self.ui, self.repo, self.nodelist)
|
|
|
if roots:
|
|
|
strip(self.ui, self.repo, roots, self.backup, self.topic)
|
|
|
|
|
|
def delayedstrip(ui, repo, nodelist, topic=None):
|
|
|
"""like strip, but works inside transaction and won't strip irreverent revs
|
|
|
|
|
|
nodelist must explicitly contain all descendants. Otherwise a warning will
|
|
|
be printed that some nodes are not stripped.
|
|
|
|
|
|
Always do a backup. The last non-None "topic" will be used as the backup
|
|
|
topic name. The default backup topic name is "backup".
|
|
|
"""
|
|
|
tr = repo.currenttransaction()
|
|
|
if not tr:
|
|
|
nodes = safestriproots(ui, repo, nodelist)
|
|
|
return strip(ui, repo, nodes, True, topic)
|
|
|
# transaction postclose callbacks are called in alphabet order.
|
|
|
# use '\xff' as prefix so we are likely to be called last.
|
|
|
callback = tr.getpostclose('\xffstrip')
|
|
|
if callback is None:
|
|
|
callback = stripcallback(ui, repo, True, topic)
|
|
|
tr.addpostclose('\xffstrip', callback)
|
|
|
if topic:
|
|
|
callback.topic = topic
|
|
|
callback.addnodes(nodelist)
|
|
|
|
|
|
def stripmanifest(repo, striprev, tr, files):
|
|
|
revlog = repo.manifestlog._revlog
|
|
|
revlog.strip(striprev, tr)
|
|
|
striptrees(repo, tr, striprev, files)
|
|
|
|
|
|
def striptrees(repo, tr, striprev, files):
|
|
|
if 'treemanifest' in repo.requirements: # safe but unnecessary
|
|
|
# otherwise
|
|
|
for unencoded, encoded, size in repo.store.datafiles():
|
|
|
if (unencoded.startswith('meta/') and
|
|
|
unencoded.endswith('00manifest.i')):
|
|
|
dir = unencoded[5:-12]
|
|
|
repo.manifestlog._revlog.dirlog(dir).strip(striprev, tr)
|
|
|
|
|
|
def rebuildfncache(ui, repo):
|
|
|
"""Rebuilds the fncache file from repo history.
|
|
|
|
|
|
Missing entries will be added. Extra entries will be removed.
|
|
|
"""
|
|
|
repo = repo.unfiltered()
|
|
|
|
|
|
if 'fncache' not in repo.requirements:
|
|
|
ui.warn(_('(not rebuilding fncache because repository does not '
|
|
|
'support fncache)\n'))
|
|
|
return
|
|
|
|
|
|
with repo.lock():
|
|
|
fnc = repo.store.fncache
|
|
|
# Trigger load of fncache.
|
|
|
if 'irrelevant' in fnc:
|
|
|
pass
|
|
|
|
|
|
oldentries = set(fnc.entries)
|
|
|
newentries = set()
|
|
|
seenfiles = set()
|
|
|
|
|
|
repolen = len(repo)
|
|
|
for rev in repo:
|
|
|
ui.progress(_('rebuilding'), rev, total=repolen,
|
|
|
unit=_('changesets'))
|
|
|
|
|
|
ctx = repo[rev]
|
|
|
for f in ctx.files():
|
|
|
# This is to minimize I/O.
|
|
|
if f in seenfiles:
|
|
|
continue
|
|
|
seenfiles.add(f)
|
|
|
|
|
|
i = 'data/%s.i' % f
|
|
|
d = 'data/%s.d' % f
|
|
|
|
|
|
if repo.store._exists(i):
|
|
|
newentries.add(i)
|
|
|
if repo.store._exists(d):
|
|
|
newentries.add(d)
|
|
|
|
|
|
ui.progress(_('rebuilding'), None)
|
|
|
|
|
|
if 'treemanifest' in repo.requirements: # safe but unnecessary otherwise
|
|
|
for dir in util.dirs(seenfiles):
|
|
|
i = 'meta/%s/00manifest.i' % dir
|
|
|
d = 'meta/%s/00manifest.d' % dir
|
|
|
|
|
|
if repo.store._exists(i):
|
|
|
newentries.add(i)
|
|
|
if repo.store._exists(d):
|
|
|
newentries.add(d)
|
|
|
|
|
|
addcount = len(newentries - oldentries)
|
|
|
removecount = len(oldentries - newentries)
|
|
|
for p in sorted(oldentries - newentries):
|
|
|
ui.write(_('removing %s\n') % p)
|
|
|
for p in sorted(newentries - oldentries):
|
|
|
ui.write(_('adding %s\n') % p)
|
|
|
|
|
|
if addcount or removecount:
|
|
|
ui.write(_('%d items added, %d removed from fncache\n') %
|
|
|
(addcount, removecount))
|
|
|
fnc.entries = newentries
|
|
|
fnc._dirty = True
|
|
|
|
|
|
with repo.transaction('fncache') as tr:
|
|
|
fnc.write(tr)
|
|
|
else:
|
|
|
ui.write(_('fncache already up to date\n'))
|
|
|
|
|
|
def stripbmrevset(repo, mark):
|
|
|
"""
|
|
|
The revset to strip when strip is called with -B mark
|
|
|
|
|
|
Needs to live here so extensions can use it and wrap it even when strip is
|
|
|
not enabled or not present on a box.
|
|
|
"""
|
|
|
return repo.revs("ancestors(bookmark(%s)) - "
|
|
|
"ancestors(head() and not bookmark(%s)) - "
|
|
|
"ancestors(bookmark() and not bookmark(%s))",
|
|
|
mark, mark, mark)
|
|
|
|
|
|
def deleteobsmarkers(obsstore, indices):
|
|
|
"""Delete some obsmarkers from obsstore and return how many were deleted
|
|
|
|
|
|
'indices' is a list of ints which are the indices
|
|
|
of the markers to be deleted.
|
|
|
|
|
|
Every invocation of this function completely rewrites the obsstore file,
|
|
|
skipping the markers we want to be removed. The new temporary file is
|
|
|
created, remaining markers are written there and on .close() this file
|
|
|
gets atomically renamed to obsstore, thus guaranteeing consistency."""
|
|
|
if not indices:
|
|
|
# we don't want to rewrite the obsstore with the same content
|
|
|
return
|
|
|
|
|
|
left = []
|
|
|
current = obsstore._all
|
|
|
n = 0
|
|
|
for i, m in enumerate(current):
|
|
|
if i in indices:
|
|
|
n += 1
|
|
|
continue
|
|
|
left.append(m)
|
|
|
|
|
|
newobsstorefile = obsstore.svfs('obsstore', 'w', atomictemp=True)
|
|
|
for bytes in obsolete.encodemarkers(left, True, obsstore._version):
|
|
|
newobsstorefile.write(bytes)
|
|
|
newobsstorefile.close()
|
|
|
return n
|
|
|
|
