Mercurial > hg
annotate mercurial/repair.py @ 28868:445a25bb70be
obsstore: move delete function from obsstore class to repair module
Since one of the original patches was accepted already and people on the
mailing list still have suggestions as to how this should be improved, I'm
implementing those suggestions in the following patches (this and the ones that
might follow).
author | Kostia Balytskyi <ikostia@fb.com> |
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date | Tue, 12 Apr 2016 04:06:50 -0700 |
parents | ae53ecc47414 |
children | bf7b8157c483 |
rev | line source |
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1 # repair.py - functions for repository repair for mercurial |
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2 # |
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3 # Copyright 2005, 2006 Chris Mason <mason@suse.com> |
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4 # Copyright 2007 Matt Mackall |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
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8 |
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9 from __future__ import absolute_import |
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10 |
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11 import errno |
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12 |
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13 from .i18n import _ |
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14 from .node import short |
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15 from . import ( |
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16 bundle2, |
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17 changegroup, |
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18 error, |
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19 exchange, |
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20 obsolete, |
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21 util, |
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22 ) |
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23 |
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24 def _bundle(repo, bases, heads, node, suffix, compress=True): |
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25 """create a bundle with the specified revisions as a backup""" |
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26 cgversion = changegroup.safeversion(repo) |
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27 |
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28 cg = changegroup.changegroupsubset(repo, bases, heads, 'strip', |
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29 version=cgversion) |
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30 backupdir = "strip-backup" |
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31 vfs = repo.vfs |
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32 if not vfs.isdir(backupdir): |
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33 vfs.mkdir(backupdir) |
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34 |
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35 # Include a hash of all the nodes in the filename for uniqueness |
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36 allcommits = repo.set('%ln::%ln', bases, heads) |
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37 allhashes = sorted(c.hex() for c in allcommits) |
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38 totalhash = util.sha1(''.join(allhashes)).hexdigest() |
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39 name = "%s/%s-%s-%s.hg" % (backupdir, short(node), totalhash[:8], suffix) |
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40 |
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41 comp = None |
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42 if cgversion != '01': |
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43 bundletype = "HG20" |
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44 if compress: |
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45 comp = 'BZ' |
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46 elif compress: |
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47 bundletype = "HG10BZ" |
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48 else: |
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49 bundletype = "HG10UN" |
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50 return bundle2.writebundle(repo.ui, cg, name, bundletype, vfs, |
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51 compression=comp) |
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52 |
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53 def _collectfiles(repo, striprev): |
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54 """find out the filelogs affected by the strip""" |
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55 files = set() |
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56 |
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57 for x in xrange(striprev, len(repo)): |
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58 files.update(repo[x].files()) |
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59 |
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60 return sorted(files) |
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61 |
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62 def _collectbrokencsets(repo, files, striprev): |
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63 """return the changesets which will be broken by the truncation""" |
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64 s = set() |
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65 def collectone(revlog): |
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66 _, brokenset = revlog.getstrippoint(striprev) |
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67 s.update([revlog.linkrev(r) for r in brokenset]) |
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68 |
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69 collectone(repo.manifest) |
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70 for fname in files: |
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71 collectone(repo.file(fname)) |
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72 |
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73 return s |
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74 |
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75 def strip(ui, repo, nodelist, backup=True, topic='backup'): |
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76 # This function operates within a transaction of its own, but does |
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77 # not take any lock on the repo. |
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78 # Simple way to maintain backwards compatibility for this |
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79 # argument. |
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80 if backup in ['none', 'strip']: |
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81 backup = False |
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82 |
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83 repo = repo.unfiltered() |
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84 repo.destroying() |
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85 |
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86 cl = repo.changelog |
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87 # TODO handle undo of merge sets |
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88 if isinstance(nodelist, str): |
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89 nodelist = [nodelist] |
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90 striplist = [cl.rev(node) for node in nodelist] |
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91 striprev = min(striplist) |
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92 |
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93 # Some revisions with rev > striprev may not be descendants of striprev. |
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94 # We have to find these revisions and put them in a bundle, so that |
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95 # we can restore them after the truncations. |
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96 # To create the bundle we use repo.changegroupsubset which requires |
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97 # the list of heads and bases of the set of interesting revisions. |
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98 # (head = revision in the set that has no descendant in the set; |
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99 # base = revision in the set that has no ancestor in the set) |
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100 tostrip = set(striplist) |
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101 for rev in striplist: |
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102 for desc in cl.descendants([rev]): |
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103 tostrip.add(desc) |
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104 |
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105 files = _collectfiles(repo, striprev) |
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106 saverevs = _collectbrokencsets(repo, files, striprev) |
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107 |
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108 # compute heads |
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109 saveheads = set(saverevs) |
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110 for r in xrange(striprev + 1, len(cl)): |
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111 if r not in tostrip: |
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112 saverevs.add(r) |
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113 saveheads.difference_update(cl.parentrevs(r)) |
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114 saveheads.add(r) |
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115 saveheads = [cl.node(r) for r in saveheads] |
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116 |
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117 # compute base nodes |
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118 if saverevs: |
16867
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revlog: descendants(*revs) becomes descendants(revs) (API)
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119 descendants = set(cl.descendants(saverevs)) |
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120 saverevs.difference_update(descendants) |
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121 savebases = [cl.node(r) for r in saverevs] |
16252
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strip: enhance repair.strip to receive a list of nodes (issue3299)
Wagner Bruna <wbruna@softwareexpress.com.br>
parents:
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122 stripbases = [cl.node(r) for r in tostrip] |
18040
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strip: make query to get new bookmark target cheaper
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parents:
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changeset
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123 |
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124 # For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), but |
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125 # is much faster |
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|
126 newbmtarget = repo.revs('max(parents(%ld) - (%ld))', tostrip, tostrip) |
17264
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strip: move bookmarks to nearest ancestor rather than '.'
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parents:
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127 if newbmtarget: |
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repair: use `first` instead of direct indexing
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128 newbmtarget = repo[newbmtarget.first()].node() |
17264
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129 else: |
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130 newbmtarget = '.' |
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131 |
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132 bm = repo._bookmarks |
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133 updatebm = [] |
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134 for m in bm: |
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135 rev = repo[bm[m]].rev() |
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136 if rev in tostrip: |
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137 updatebm.append(m) |
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138 |
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139 # create a changegroup for all the branches we need to keep |
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140 backupfile = None |
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repair: make "strip()" treat bundle files via vfs
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parents:
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141 vfs = repo.vfs |
24252
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repair: define explicit local variable, don't reuse a comprehension variable
Mike Edgar <adgar@google.com>
parents:
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changeset
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142 node = nodelist[-1] |
22057
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strip: remove -b/--backup codepaths
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents:
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143 if backup: |
16388
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repair: allow giving strip backup a different name
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parents:
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144 backupfile = _bundle(repo, stripbases, cl.heads(), node, topic) |
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145 repo.ui.status(_("saved backup bundle to %s\n") % |
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146 vfs.join(backupfile)) |
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147 repo.ui.log("backupbundle", "saved backup bundle to %s\n", |
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148 vfs.join(backupfile)) |
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changeset
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149 if saveheads or savebases: |
11791
00cde9bddbe4
repair: do not compress partial bundle if we do not keep it on disk
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parents:
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150 # do not compress partial bundle if we remove it from disk later |
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151 chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp', |
22057
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strip: remove -b/--backup codepaths
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152 compress=False) |
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153 |
8073
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154 mfst = repo.manifest |
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155 |
25300
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repair: forbid strip from inside a transaction
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156 curtr = repo.currenttransaction() |
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157 if curtr is not None: |
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158 del curtr # avoid carrying reference to transaction for nothing |
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159 msg = _('programming error: cannot strip from inside a transaction') |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
26425
diff
changeset
|
160 raise error.Abort(msg, hint=_('contact your extension maintainer')) |
25300
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161 |
27873
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with: use context manager for transaction in strip
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parents:
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diff
changeset
|
162 try: |
60ea60fea5f3
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parents:
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163 with repo.transaction("strip") as tr: |
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164 offset = len(tr.entries) |
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165 |
27873
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166 tr.startgroup() |
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167 cl.strip(striprev, tr) |
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168 mfst.strip(striprev, tr) |
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169 for fn in files: |
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|
170 repo.file(fn).strip(striprev, tr) |
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171 tr.endgroup() |
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172 |
11197
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173 for i in xrange(offset, len(tr.entries)): |
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changeset
|
174 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
|
175 repo.svfs(file, 'a').truncate(troffset) |
20885
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20074
diff
changeset
|
176 if troffset == 0: |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
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changeset
|
177 repo.store.markremoved(file) |
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178 |
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changeset
|
179 if saveheads or savebases: |
11202
f974fe896921
strip: hide unbundle messages by default
Matt Mackall <mpm@selenic.com>
parents:
11200
diff
changeset
|
180 ui.note(_("adding branch\n")) |
20979
ad5b61370514
repair: make "strip()" treat bundle files via vfs
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parents:
20977
diff
changeset
|
181 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
|
182 gen = exchange.readbundle(ui, f, chgrpfile, vfs) |
11202
f974fe896921
strip: hide unbundle messages by default
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parents:
11200
diff
changeset
|
183 if not repo.ui.verbose: |
f974fe896921
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11200
diff
changeset
|
184 # silence internal shuffling chatter |
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parents:
11200
diff
changeset
|
185 repo.ui.pushbuffer() |
23898
b21c2e0ee8a3
repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents:
23895
diff
changeset
|
186 if isinstance(gen, bundle2.unbundle20): |
27875
add2ba16430e
with: use context manager for transaction in strip
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parents:
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changeset
|
187 with repo.transaction('strip') as tr: |
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changeset
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188 tr.hookargs = {'source': 'strip', |
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changeset
|
189 'url': 'bundle:' + vfs.join(chgrpfile)} |
26797
75d550b7d8f5
strip: pass source and url to bundle2 processing
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parents:
26701
diff
changeset
|
190 bundle2.applybundle(repo, gen, tr, source='strip', |
75d550b7d8f5
strip: pass source and url to bundle2 processing
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parents:
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diff
changeset
|
191 url='bundle:' + vfs.join(chgrpfile)) |
23898
b21c2e0ee8a3
repair: add experimental option to write bundle2 files
Eric Sumner <ericsumner@fb.com>
parents:
23895
diff
changeset
|
192 else: |
26701
b1a0c534d9b4
repair: use cg?unpacker.apply() instead of changegroup.addchangegroup()
Augie Fackler <augie@google.com>
parents:
26624
diff
changeset
|
193 gen.apply(repo, 'strip', 'bundle:' + vfs.join(chgrpfile), True) |
11202
f974fe896921
strip: hide unbundle messages by default
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parents:
11200
diff
changeset
|
194 if not repo.ui.verbose: |
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|
195 repo.ui.popbuffer() |
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196 f.close() |
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changeset
|
197 |
27157
5f2e4eb08e41
repair: use bookmarks.recordchange instead of bookmarks.write
Laurent Charignon <lcharignon@fb.com>
parents:
26797
diff
changeset
|
198 for m in updatebm: |
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Laurent Charignon <lcharignon@fb.com>
parents:
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changeset
|
199 bm[m] = repo[newbmtarget].node() |
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parents:
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changeset
|
200 lock = tr = None |
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Laurent Charignon <lcharignon@fb.com>
parents:
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diff
changeset
|
201 try: |
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Laurent Charignon <lcharignon@fb.com>
parents:
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changeset
|
202 lock = repo.lock() |
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repair: use bookmarks.recordchange instead of bookmarks.write
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parents:
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changeset
|
203 tr = repo.transaction('repair') |
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changeset
|
204 bm.recordchange(tr) |
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changeset
|
205 tr.close() |
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Laurent Charignon <lcharignon@fb.com>
parents:
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diff
changeset
|
206 finally: |
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parents:
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changeset
|
207 tr.release() |
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parents:
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changeset
|
208 lock.release() |
5f2e4eb08e41
repair: use bookmarks.recordchange instead of bookmarks.write
Laurent Charignon <lcharignon@fb.com>
parents:
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changeset
|
209 |
16237
b5c0c7d0f83f
repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents:
15901
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changeset
|
210 # 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
|
211 for undovfs, undofile in repo.undofiles(): |
16237
b5c0c7d0f83f
repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents:
15901
diff
changeset
|
212 try: |
20975
37cdf1fca1b2
localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20933
diff
changeset
|
213 undovfs.unlink(undofile) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25652
diff
changeset
|
214 except OSError as e: |
16237
b5c0c7d0f83f
repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents:
15901
diff
changeset
|
215 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
|
216 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:
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diff
changeset
|
217 (undovfs.join(undofile), str(e))) |
16237
b5c0c7d0f83f
repair: remove undo files after strip
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parents:
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diff
changeset
|
218 |
16705
c2d9ef43ff6c
check-code: ignore naked excepts with a "re-raise" comment
Brodie Rao <brodie@sf.io>
parents:
16628
diff
changeset
|
219 except: # re-raises |
11197
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parents:
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diff
changeset
|
220 if backupfile: |
11600
76454cbc11e4
mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents:
11333
diff
changeset
|
221 ui.warn(_("strip failed, full bundle stored in '%s'\n") |
20979
ad5b61370514
repair: make "strip()" treat bundle files via vfs
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222 % vfs.join(backupfile)) |
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223 elif saveheads: |
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224 ui.warn(_("strip failed, partial bundle stored in '%s'\n") |
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225 % vfs.join(chgrpfile)) |
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226 raise |
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227 else: |
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228 if saveheads or savebases: |
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229 # Remove partial backup only if there were no exceptions |
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230 vfs.unlink(chgrpfile) |
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231 |
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232 repo.destroyed() |
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233 |
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234 def rebuildfncache(ui, repo): |
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235 """Rebuilds the fncache file from repo history. |
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236 |
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237 Missing entries will be added. Extra entries will be removed. |
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238 """ |
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239 repo = repo.unfiltered() |
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240 |
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241 if 'fncache' not in repo.requirements: |
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242 ui.warn(_('(not rebuilding fncache because repository does not ' |
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243 'support fncache)\n')) |
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244 return |
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245 |
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246 with repo.lock(): |
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247 fnc = repo.store.fncache |
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248 # Trigger load of fncache. |
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249 if 'irrelevant' in fnc: |
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250 pass |
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251 |
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252 oldentries = set(fnc.entries) |
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253 newentries = set() |
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254 seenfiles = set() |
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255 |
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256 repolen = len(repo) |
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257 for rev in repo: |
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258 ui.progress(_('rebuilding'), rev, total=repolen, |
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259 unit=_('changesets')) |
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260 |
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261 ctx = repo[rev] |
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262 for f in ctx.files(): |
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263 # This is to minimize I/O. |
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264 if f in seenfiles: |
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265 continue |
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266 seenfiles.add(f) |
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267 |
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268 i = 'data/%s.i' % f |
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269 d = 'data/%s.d' % f |
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270 |
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271 if repo.store._exists(i): |
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272 newentries.add(i) |
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273 if repo.store._exists(d): |
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274 newentries.add(d) |
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275 |
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276 ui.progress(_('rebuilding'), None) |
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277 |
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278 if 'treemanifest' in repo.requirements: # safe but unnecessary otherwise |
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279 for dir in util.dirs(seenfiles): |
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280 i = 'meta/%s/00manifest.i' % dir |
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281 d = 'meta/%s/00manifest.d' % dir |
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282 |
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283 if repo.store._exists(i): |
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284 newentries.add(i) |
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285 if repo.store._exists(d): |
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286 newentries.add(d) |
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287 |
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288 addcount = len(newentries - oldentries) |
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289 removecount = len(oldentries - newentries) |
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290 for p in sorted(oldentries - newentries): |
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291 ui.write(_('removing %s\n') % p) |
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292 for p in sorted(newentries - oldentries): |
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293 ui.write(_('adding %s\n') % p) |
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294 |
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295 if addcount or removecount: |
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296 ui.write(_('%d items added, %d removed from fncache\n') % |
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297 (addcount, removecount)) |
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298 fnc.entries = newentries |
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299 fnc._dirty = True |
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300 |
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301 with repo.transaction('fncache') as tr: |
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302 fnc.write(tr) |
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303 else: |
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304 ui.write(_('fncache already up to date\n')) |
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305 |
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306 def stripbmrevset(repo, mark): |
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307 """ |
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308 The revset to strip when strip is called with -B mark |
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309 |
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310 Needs to live here so extensions can use it and wrap it even when strip is |
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311 not enabled or not present on a box. |
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312 """ |
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313 return repo.revs("ancestors(bookmark(%s)) - " |
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314 "ancestors(head() and not bookmark(%s)) - " |
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315 "ancestors(bookmark() and not bookmark(%s))", |
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316 mark, mark, mark) |
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317 |
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318 def deleteobsmarkers(obsstore, indices): |
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319 """Delete some obsmarkers from obsstore and return how many were deleted |
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320 |
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321 'indices' is a list of ints which are the indices |
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322 of the markers to be deleted. |
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323 |
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324 Every invocation of this function completely rewrites the obsstore file, |
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325 skipping the markers we want to be removed. The new temporary file is |
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326 created, remaining markers are written there and on .close() this file |
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327 gets atomically renamed to obsstore, thus guaranteeing consistency.""" |
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328 if not indices: |
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329 # we don't want to rewrite the obsstore with the same content |
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330 return |
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331 |
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332 left = [] |
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333 current = obsstore._all |
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334 n = 0 |
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335 for i, m in enumerate(current): |
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336 if i in indices: |
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337 n += 1 |
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338 continue |
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339 left.append(m) |
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340 |
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341 newobsstorefile = obsstore.svfs('obsstore', 'w', atomictemp=True) |
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obsstore: move delete function from obsstore class to repair module
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342 for bytes in obsolete.encodemarkers(left, True, obsstore._version): |
445a25bb70be
obsstore: move delete function from obsstore class to repair module
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parents:
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343 newobsstorefile.write(bytes) |
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obsstore: move delete function from obsstore class to repair module
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344 newobsstorefile.close() |
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obsstore: move delete function from obsstore class to repair module
Kostia Balytskyi <ikostia@fb.com>
parents:
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345 return n |