mercurial/repair.py
author Ryan McElroy <rmcelroy@fb.com>
Tue, 14 Apr 2015 13:31:50 -0700
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child 25300 678d0bfdd31a
permissions -rw-r--r--
bookmarks: remove unused updatecurrentbookmark function (API) This function was not used anywhere in core and there is no indication that it is used elsewhere either.
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# repair.py - functions for repository repair for mercurial
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#
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# Copyright 2005, 2006 Chris Mason <mason@suse.com>
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# Copyright 2007 Matt Mackall
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from mercurial import changegroup, exchange, util, bundle2
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from mercurial.node import short, hex
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from mercurial.i18n import _
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import errno
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def _bundle(repo, bases, heads, node, suffix, compress=True):
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    """create a bundle with the specified revisions as a backup"""
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    usebundle2 = (repo.ui.config('experimental', 'bundle2-exp') and
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                  repo.ui.config('experimental', 'strip-bundle2-version'))
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    if usebundle2:
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        cgversion = repo.ui.config('experimental', 'strip-bundle2-version')
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        if cgversion not in changegroup.packermap:
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            repo.ui.warn(_('unknown strip-bundle2-version value %r; '
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                            'should be one of %r\n') %
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                         (cgversion, sorted(changegroup.packermap.keys()),))
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            cgversion = '01'
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            usebundle2 = False
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    else:
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        cgversion = '01'
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    cg = changegroup.changegroupsubset(repo, bases, heads, 'strip',
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                                       version=cgversion)
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    backupdir = "strip-backup"
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    vfs = repo.vfs
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    if not vfs.isdir(backupdir):
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        vfs.mkdir(backupdir)
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    # Include a hash of all the nodes in the filename for uniqueness
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    hexbases = (hex(n) for n in bases)
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    hexheads = (hex(n) for n in heads)
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    allcommits = repo.set('%ls::%ls', hexbases, hexheads)
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    allhashes = sorted(c.hex() for c in allcommits)
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    totalhash = util.sha1(''.join(allhashes)).hexdigest()
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    name = "%s/%s-%s-%s.hg" % (backupdir, short(node), totalhash[:8], suffix)
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    if usebundle2:
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        bundletype = "HG20"
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    elif compress:
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        bundletype = "HG10BZ"
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    else:
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        bundletype = "HG10UN"
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    return changegroup.writebundle(repo.ui, cg, name, bundletype, vfs)
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def _collectfiles(repo, striprev):
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    """find out the filelogs affected by the strip"""
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    files = set()
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    for x in xrange(striprev, len(repo)):
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        files.update(repo[x].files())
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    return sorted(files)
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def _collectbrokencsets(repo, files, striprev):
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    """return the changesets which will be broken by the truncation"""
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    s = set()
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    def collectone(revlog):
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        _, brokenset = revlog.getstrippoint(striprev)
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        s.update([revlog.linkrev(r) for r in brokenset])
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    collectone(repo.manifest)
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    for fname in files:
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        collectone(repo.file(fname))
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    return s
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def strip(ui, repo, nodelist, backup=True, topic='backup'):
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    # Simple way to maintain backwards compatibility for this
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    # argument.
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    if backup in ['none', 'strip']:
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        backup = False
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    repo = repo.unfiltered()
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    repo.destroying()
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    cl = repo.changelog
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    # TODO handle undo of merge sets
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    if isinstance(nodelist, str):
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        nodelist = [nodelist]
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    striplist = [cl.rev(node) for node in nodelist]
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    striprev = min(striplist)
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    # Some revisions with rev > striprev may not be descendants of striprev.
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    # We have to find these revisions and put them in a bundle, so that
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    # we can restore them after the truncations.
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    # To create the bundle we use repo.changegroupsubset which requires
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    # the list of heads and bases of the set of interesting revisions.
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    # (head = revision in the set that has no descendant in the set;
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    #  base = revision in the set that has no ancestor in the set)
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    tostrip = set(striplist)
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    for rev in striplist:
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        for desc in cl.descendants([rev]):
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            tostrip.add(desc)
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    files = _collectfiles(repo, striprev)
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    saverevs = _collectbrokencsets(repo, files, striprev)
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    # compute heads
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    saveheads = set(saverevs)
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    for r in xrange(striprev + 1, len(cl)):
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        if r not in tostrip:
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            saverevs.add(r)
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            saveheads.difference_update(cl.parentrevs(r))
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            saveheads.add(r)
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    saveheads = [cl.node(r) for r in saveheads]
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    # compute base nodes
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    if saverevs:
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        descendants = set(cl.descendants(saverevs))
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        saverevs.difference_update(descendants)
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    savebases = [cl.node(r) for r in saverevs]
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Wagner Bruna <wbruna@softwareexpress.com.br>
parents: 15901
diff changeset
   120
    stripbases = [cl.node(r) for r in tostrip]
18040
fe8caf28d580 strip: make query to get new bookmark target cheaper
Siddharth Agarwal <sid0@fb.com>
parents: 18004
diff changeset
   121
fe8caf28d580 strip: make query to get new bookmark target cheaper
Siddharth Agarwal <sid0@fb.com>
parents: 18004
diff changeset
   122
    # For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), but
fe8caf28d580 strip: make query to get new bookmark target cheaper
Siddharth Agarwal <sid0@fb.com>
parents: 18004
diff changeset
   123
    # is much faster
fe8caf28d580 strip: make query to get new bookmark target cheaper
Siddharth Agarwal <sid0@fb.com>
parents: 18004
diff changeset
   124
    newbmtarget = repo.revs('max(parents(%ld) - (%ld))', tostrip, tostrip)
17264
ec7b9bec19c9 strip: move bookmarks to nearest ancestor rather than '.'
Augie Fackler <raf@durin42.com>
parents: 17013
diff changeset
   125
    if newbmtarget:
22818
d7b114493315 repair: use `first` instead of direct indexing
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22057
diff changeset
   126
        newbmtarget = repo[newbmtarget.first()].node()
17264
ec7b9bec19c9 strip: move bookmarks to nearest ancestor rather than '.'
Augie Fackler <raf@durin42.com>
parents: 17013
diff changeset
   127
    else:
ec7b9bec19c9 strip: move bookmarks to nearest ancestor rather than '.'
Augie Fackler <raf@durin42.com>
parents: 17013
diff changeset
   128
        newbmtarget = '.'
4702
18e91c9def0c strip: move strip code to a new repair module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   129
13362
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   130
    bm = repo._bookmarks
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   131
    updatebm = []
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parents: 12057
diff changeset
   132
    for m in bm:
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   133
        rev = repo[bm[m]].rev()
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   134
        if rev in tostrip:
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   135
            updatebm.append(m)
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   136
4702
18e91c9def0c strip: move strip code to a new repair module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   137
    # create a changegroup for all the branches we need to keep
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   138
    backupfile = None
20979
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   139
    vfs = repo.vfs
24252
f962692853c0 repair: define explicit local variable, don't reuse a comprehension variable
Mike Edgar <adgar@google.com>
parents: 24170
diff changeset
   140
    node = nodelist[-1]
22057
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   141
    if backup:
16388
e03d8a40521f repair: allow giving strip backup a different name
Idan Kamara <idankk86@gmail.com>
parents: 16253
diff changeset
   142
        backupfile = _bundle(repo, stripbases, cl.heads(), node, topic)
20979
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   143
        repo.ui.status(_("saved backup bundle to %s\n") %
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   144
                       vfs.join(backupfile))
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   145
        repo.ui.log("backupbundle", "saved backup bundle to %s\n",
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   146
                    vfs.join(backupfile))
15386
6051d8e7e133 strip: backout 73307643a09f (issue3077)
Matt Mackall <mpm@selenic.com>
parents: 15068
diff changeset
   147
    if saveheads or savebases:
11791
00cde9bddbe4 repair: do not compress partial bundle if we do not keep it on disk
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11600
diff changeset
   148
        # do not compress partial bundle if we remove it from disk later
15386
6051d8e7e133 strip: backout 73307643a09f (issue3077)
Matt Mackall <mpm@selenic.com>
parents: 15068
diff changeset
   149
        chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp',
22057
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   150
                            compress=False)
4702
18e91c9def0c strip: move strip code to a new repair module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   151
8073
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   152
    mfst = repo.manifest
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   153
10881
a685011ed38e localrepo: add desc parameter to transaction
Steve Borho <steve@borho.org>
parents: 10263
diff changeset
   154
    tr = repo.transaction("strip")
8073
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   155
    offset = len(tr.entries)
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   156
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   157
    try:
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   158
        tr.startgroup()
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   159
        cl.strip(striprev, tr)
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   160
        mfst.strip(striprev, tr)
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   161
        for fn in files:
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   162
            repo.file(fn).strip(striprev, tr)
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   163
        tr.endgroup()
8073
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   164
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   165
        try:
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   166
            for i in xrange(offset, len(tr.entries)):
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   167
                file, troffset, ignore = tr.entries[i]
23878
37a92908a382 localrepo: remove all external users of localrepo.sopener
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 23835
diff changeset
   168
                repo.svfs(file, 'a').truncate(troffset)
20885
f49d60fa40a5 fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents: 20074
diff changeset
   169
                if troffset == 0:
f49d60fa40a5 fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents: 20074
diff changeset
   170
                    repo.store.markremoved(file)
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   171
            tr.close()
16705
c2d9ef43ff6c check-code: ignore naked excepts with a "re-raise" comment
Brodie Rao <brodie@sf.io>
parents: 16628
diff changeset
   172
        except: # re-raises
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   173
            tr.abort()
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   174
            raise
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   175
15386
6051d8e7e133 strip: backout 73307643a09f (issue3077)
Matt Mackall <mpm@selenic.com>
parents: 15068
diff changeset
   176
        if saveheads or savebases:
11202
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   177
            ui.note(_("adding branch\n"))
20979
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   178
            f = vfs.open(chgrpfile, "rb")
21064
4d9d490d7bbe bundle2: add a ui argument to readbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 21063
diff changeset
   179
            gen = exchange.readbundle(ui, f, chgrpfile, vfs)
11202
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   180
            if not repo.ui.verbose:
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   181
                # silence internal shuffling chatter
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   182
                repo.ui.pushbuffer()
23898
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   183
            if isinstance(gen, bundle2.unbundle20):
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   184
                tr = repo.transaction('strip')
24170
fbc4d550a6ab repair: setup hookargs when processing bundle2s
Eric Sumner <ericsumner@fb.com>
parents: 23939
diff changeset
   185
                tr.hookargs = {'source': 'strip',
fbc4d550a6ab repair: setup hookargs when processing bundle2s
Eric Sumner <ericsumner@fb.com>
parents: 23939
diff changeset
   186
                               'url': 'bundle:' + vfs.join(chgrpfile)}
23898
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   187
                try:
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   188
                    bundle2.processbundle(repo, gen, lambda: tr)
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   189
                    tr.close()
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   190
                finally:
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   191
                    tr.release()
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   192
            else:
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   193
                changegroup.addchangegroup(repo, gen, 'strip',
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   194
                                           'bundle:' + vfs.join(chgrpfile),
b21c2e0ee8a3 repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents: 23895
diff changeset
   195
                                           True)
11202
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   196
            if not repo.ui.verbose:
f974fe896921 strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents: 11200
diff changeset
   197
                repo.ui.popbuffer()
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   198
            f.close()
13362
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   199
16237
b5c0c7d0f83f repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents: 15901
diff changeset
   200
        # remove undo files
20975
37cdf1fca1b2 localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20933
diff changeset
   201
        for undovfs, undofile in repo.undofiles():
16237
b5c0c7d0f83f repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents: 15901
diff changeset
   202
            try:
20975
37cdf1fca1b2 localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20933
diff changeset
   203
                undovfs.unlink(undofile)
16237
b5c0c7d0f83f repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents: 15901
diff changeset
   204
            except OSError, e:
b5c0c7d0f83f repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents: 15901
diff changeset
   205
                if e.errno != errno.ENOENT:
20975
37cdf1fca1b2 localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20933
diff changeset
   206
                    ui.warn(_('error removing %s: %s\n') %
37cdf1fca1b2 localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20933
diff changeset
   207
                            (undovfs.join(undofile), str(e)))
16237
b5c0c7d0f83f repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents: 15901
diff changeset
   208
13362
ee01d9d84115 bookmarks: move strip support to repair
Matt Mackall <mpm@selenic.com>
parents: 12057
diff changeset
   209
        for m in updatebm:
17264
ec7b9bec19c9 strip: move bookmarks to nearest ancestor rather than '.'
Augie Fackler <raf@durin42.com>
parents: 17013
diff changeset
   210
            bm[m] = repo[newbmtarget].node()
17922
7f5dab94e48c bookmarks: introduce a bmstore to manage bookmark persistence
Augie Fackler <raf@durin42.com>
parents: 17796
diff changeset
   211
        bm.write()
16705
c2d9ef43ff6c check-code: ignore naked excepts with a "re-raise" comment
Brodie Rao <brodie@sf.io>
parents: 16628
diff changeset
   212
    except: # re-raises
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   213
        if backupfile:
11600
76454cbc11e4 mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents: 11333
diff changeset
   214
            ui.warn(_("strip failed, full bundle stored in '%s'\n")
20979
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   215
                    % vfs.join(backupfile))
11197
4bb4895e1693 strip: be quiet about temporary internal bundle
Matt Mackall <mpm@selenic.com>
parents: 10881
diff changeset
   216
        elif saveheads:
11600
76454cbc11e4 mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents: 11333
diff changeset
   217
            ui.warn(_("strip failed, partial bundle stored in '%s'\n")
20979
ad5b61370514 repair: make "strip()" treat bundle files via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 20977
diff changeset
   218
                    % vfs.join(chgrpfile))
8073
e8a28556a0a8 strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 7361
diff changeset
   219
        raise
22057
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   220
    else:
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   221
        if saveheads or savebases:
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   222
            # Remove partial backup only if there were no exceptions
445472225ccd strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 21064
diff changeset
   223
            vfs.unlink(chgrpfile)
4702
18e91c9def0c strip: move strip code to a new repair module
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   224
18395
904b7109938e destroyed: drop complex branchcache rebuilt logic
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 18311
diff changeset
   225
    repo.destroyed()