Mercurial > hg
annotate mercurial/repair.py @ 46604:ad107ed7a4aa
ci: test real dependency installation for pip
In the past, the pip smoke test inhibited actual dependency
installation, but that fails in different environments for setuptools
itself. Since it isn't what we actually want to test (which is pip
install), allow this to call home, if HGTESTS_ALLOW_NETIO=1 is set
in the environment.
Differential Revision: https://phab.mercurial-scm.org/D9950
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Thu, 04 Feb 2021 23:23:35 +0100 |
parents | cd9154343160 |
children | b4c2a2af25e2 |
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 ( |
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15 hex, |
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16 short, |
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17 ) |
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18 from . import ( |
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19 bundle2, |
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20 changegroup, |
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21 discovery, |
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22 error, |
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23 exchange, |
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24 obsolete, |
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25 obsutil, |
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26 pathutil, |
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27 phases, |
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28 pycompat, |
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29 requirements, |
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30 scmutil, |
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31 util, |
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32 ) |
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33 from .utils import ( |
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34 hashutil, |
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35 stringutil, |
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36 ) |
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37 |
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38 |
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39 def backupbundle( |
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40 repo, bases, heads, node, suffix, compress=True, obsolescence=True |
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41 ): |
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42 """create a bundle with the specified revisions as a backup""" |
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43 |
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44 backupdir = b"strip-backup" |
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45 vfs = repo.vfs |
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46 if not vfs.isdir(backupdir): |
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47 vfs.mkdir(backupdir) |
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48 |
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49 # Include a hash of all the nodes in the filename for uniqueness |
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50 allcommits = repo.set(b'%ln::%ln', bases, heads) |
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51 allhashes = sorted(c.hex() for c in allcommits) |
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52 totalhash = hashutil.sha1(b''.join(allhashes)).digest() |
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53 name = b"%s/%s-%s-%s.hg" % ( |
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54 backupdir, |
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55 short(node), |
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56 hex(totalhash[:4]), |
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57 suffix, |
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58 ) |
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59 |
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60 cgversion = changegroup.localversion(repo) |
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61 comp = None |
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62 if cgversion != b'01': |
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63 bundletype = b"HG20" |
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64 if compress: |
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65 comp = b'BZ' |
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66 elif compress: |
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67 bundletype = b"HG10BZ" |
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68 else: |
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69 bundletype = b"HG10UN" |
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70 |
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71 outgoing = discovery.outgoing(repo, missingroots=bases, ancestorsof=heads) |
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72 contentopts = { |
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73 b'cg.version': cgversion, |
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74 b'obsolescence': obsolescence, |
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75 b'phases': True, |
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76 } |
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77 return bundle2.writenewbundle( |
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78 repo.ui, |
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79 repo, |
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80 b'strip', |
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81 name, |
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82 bundletype, |
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83 outgoing, |
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84 contentopts, |
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85 vfs, |
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86 compression=comp, |
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87 ) |
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88 |
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89 |
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90 def _collectfiles(repo, striprev): |
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91 """find out the filelogs affected by the strip""" |
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92 files = set() |
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93 |
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94 for x in pycompat.xrange(striprev, len(repo)): |
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95 files.update(repo[x].files()) |
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96 |
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97 return sorted(files) |
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98 |
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99 |
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100 def _collectrevlog(revlog, striprev): |
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101 _, brokenset = revlog.getstrippoint(striprev) |
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102 return [revlog.linkrev(r) for r in brokenset] |
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103 |
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104 |
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105 def _collectbrokencsets(repo, files, striprev): |
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106 """return the changesets which will be broken by the truncation""" |
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107 s = set() |
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108 |
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109 for revlog in manifestrevlogs(repo): |
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110 s.update(_collectrevlog(revlog, striprev)) |
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111 for fname in files: |
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112 s.update(_collectrevlog(repo.file(fname), striprev)) |
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113 |
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114 return s |
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115 |
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116 |
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117 def strip(ui, repo, nodelist, backup=True, topic=b'backup'): |
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118 # This function requires the caller to lock the repo, but it operates |
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119 # within a transaction of its own, and thus requires there to be no current |
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120 # transaction when it is called. |
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121 if repo.currenttransaction() is not None: |
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122 raise error.ProgrammingError(b'cannot strip from inside a transaction') |
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123 |
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124 # Simple way to maintain backwards compatibility for this |
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125 # argument. |
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126 if backup in [b'none', b'strip']: |
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127 backup = False |
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128 |
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129 repo = repo.unfiltered() |
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130 repo.destroying() |
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131 vfs = repo.vfs |
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132 # load bookmark before changelog to avoid side effect from outdated |
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133 # changelog (see repo._refreshchangelog) |
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134 repo._bookmarks |
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135 cl = repo.changelog |
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136 |
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137 # TODO handle undo of merge sets |
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138 if isinstance(nodelist, bytes): |
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139 nodelist = [nodelist] |
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140 striplist = [cl.rev(node) for node in nodelist] |
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141 striprev = min(striplist) |
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142 |
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143 files = _collectfiles(repo, striprev) |
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144 saverevs = _collectbrokencsets(repo, files, striprev) |
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145 |
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146 # Some revisions with rev > striprev may not be descendants of striprev. |
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147 # We have to find these revisions and put them in a bundle, so that |
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148 # we can restore them after the truncations. |
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149 # To create the bundle we use repo.changegroupsubset which requires |
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150 # the list of heads and bases of the set of interesting revisions. |
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151 # (head = revision in the set that has no descendant in the set; |
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152 # base = revision in the set that has no ancestor in the set) |
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153 tostrip = set(striplist) |
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154 saveheads = set(saverevs) |
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155 for r in cl.revs(start=striprev + 1): |
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156 if any(p in tostrip for p in cl.parentrevs(r)): |
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157 tostrip.add(r) |
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158 |
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159 if r not in tostrip: |
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160 saverevs.add(r) |
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161 saveheads.difference_update(cl.parentrevs(r)) |
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162 saveheads.add(r) |
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163 saveheads = [cl.node(r) for r in saveheads] |
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164 |
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165 # compute base nodes |
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166 if saverevs: |
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167 descendants = set(cl.descendants(saverevs)) |
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168 saverevs.difference_update(descendants) |
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169 savebases = [cl.node(r) for r in saverevs] |
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170 stripbases = [cl.node(r) for r in tostrip] |
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171 |
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172 stripobsidx = obsmarkers = () |
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173 if repo.ui.configbool(b'devel', b'strip-obsmarkers'): |
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174 obsmarkers = obsutil.exclusivemarkers(repo, stripbases) |
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175 if obsmarkers: |
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176 stripobsidx = [ |
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177 i for i, m in enumerate(repo.obsstore) if m in obsmarkers |
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178 ] |
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179 |
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180 newbmtarget, updatebm = _bookmarkmovements(repo, tostrip) |
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181 |
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182 backupfile = None |
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183 node = nodelist[-1] |
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184 if backup: |
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185 backupfile = _createstripbackup(repo, stripbases, node, topic) |
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186 # create a changegroup for all the branches we need to keep |
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187 tmpbundlefile = None |
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188 if saveheads: |
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189 # do not compress temporary bundle if we remove it from disk later |
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190 # |
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191 # We do not include obsolescence, it might re-introduce prune markers |
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192 # we are trying to strip. This is harmless since the stripped markers |
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193 # are already backed up and we did not touched the markers for the |
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194 # saved changesets. |
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195 tmpbundlefile = backupbundle( |
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196 repo, |
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197 savebases, |
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198 saveheads, |
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199 node, |
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200 b'temp', |
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201 compress=False, |
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202 obsolescence=False, |
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203 ) |
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204 |
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205 with ui.uninterruptible(): |
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206 try: |
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207 with repo.transaction(b"strip") as tr: |
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208 # TODO this code violates the interface abstraction of the |
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209 # transaction and makes assumptions that file storage is |
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210 # using append-only files. We'll need some kind of storage |
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211 # API to handle stripping for us. |
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212 oldfiles = set(tr._offsetmap.keys()) |
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213 oldfiles.update(tr._newfiles) |
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214 |
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215 tr.startgroup() |
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216 cl.strip(striprev, tr) |
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217 stripmanifest(repo, striprev, tr, files) |
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218 |
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219 for fn in files: |
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220 repo.file(fn).strip(striprev, tr) |
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221 tr.endgroup() |
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222 |
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223 entries = tr.readjournal() |
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224 |
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225 for file, troffset in entries: |
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226 if file in oldfiles: |
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227 continue |
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228 with repo.svfs(file, b'a', checkambig=True) as fp: |
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229 fp.truncate(troffset) |
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230 if troffset == 0: |
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231 repo.store.markremoved(file) |
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232 |
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233 deleteobsmarkers(repo.obsstore, stripobsidx) |
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234 del repo.obsstore |
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235 repo.invalidatevolatilesets() |
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236 repo._phasecache.filterunknown(repo) |
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237 |
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238 if tmpbundlefile: |
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239 ui.note(_(b"adding branch\n")) |
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240 f = vfs.open(tmpbundlefile, b"rb") |
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241 gen = exchange.readbundle(ui, f, tmpbundlefile, vfs) |
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242 if not repo.ui.verbose: |
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243 # silence internal shuffling chatter |
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244 repo.ui.pushbuffer() |
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245 tmpbundleurl = b'bundle:' + vfs.join(tmpbundlefile) |
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246 txnname = b'strip' |
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247 if not isinstance(gen, bundle2.unbundle20): |
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248 txnname = b"strip\n%s" % util.hidepassword(tmpbundleurl) |
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249 with repo.transaction(txnname) as tr: |
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250 bundle2.applybundle( |
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251 repo, gen, tr, source=b'strip', url=tmpbundleurl |
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252 ) |
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253 if not repo.ui.verbose: |
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254 repo.ui.popbuffer() |
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255 f.close() |
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256 |
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257 with repo.transaction(b'repair') as tr: |
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258 bmchanges = [(m, repo[newbmtarget].node()) for m in updatebm] |
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259 repo._bookmarks.applychanges(repo, tr, bmchanges) |
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260 |
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261 # remove undo files |
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262 for undovfs, undofile in repo.undofiles(): |
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263 try: |
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264 undovfs.unlink(undofile) |
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265 except OSError as e: |
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266 if e.errno != errno.ENOENT: |
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267 ui.warn( |
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268 _(b'error removing %s: %s\n') |
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269 % ( |
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270 undovfs.join(undofile), |
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271 stringutil.forcebytestr(e), |
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272 ) |
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273 ) |
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274 |
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275 except: # re-raises |
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276 if backupfile: |
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277 ui.warn( |
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278 _(b"strip failed, backup bundle stored in '%s'\n") |
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279 % vfs.join(backupfile) |
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280 ) |
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281 if tmpbundlefile: |
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282 ui.warn( |
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283 _(b"strip failed, unrecovered changes stored in '%s'\n") |
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284 % vfs.join(tmpbundlefile) |
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285 ) |
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286 ui.warn( |
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287 _( |
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288 b"(fix the problem, then recover the changesets with " |
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289 b"\"hg unbundle '%s'\")\n" |
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290 ) |
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291 % vfs.join(tmpbundlefile) |
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292 ) |
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293 raise |
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294 else: |
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295 if tmpbundlefile: |
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296 # Remove temporary bundle only if there were no exceptions |
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297 vfs.unlink(tmpbundlefile) |
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298 |
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299 repo.destroyed() |
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300 # return the backup file path (or None if 'backup' was False) so |
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301 # extensions can use it |
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302 return backupfile |
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303 |
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304 |
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305 def softstrip(ui, repo, nodelist, backup=True, topic=b'backup'): |
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306 """perform a "soft" strip using the archived phase""" |
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307 tostrip = [c.node() for c in repo.set(b'sort(%ln::)', nodelist)] |
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308 if not tostrip: |
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309 return None |
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310 |
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311 backupfile = None |
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312 if backup: |
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313 node = tostrip[0] |
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314 backupfile = _createstripbackup(repo, tostrip, node, topic) |
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315 |
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316 newbmtarget, updatebm = _bookmarkmovements(repo, tostrip) |
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317 with repo.transaction(b'strip') as tr: |
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318 phases.retractboundary(repo, tr, phases.archived, tostrip) |
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319 bmchanges = [(m, repo[newbmtarget].node()) for m in updatebm] |
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320 repo._bookmarks.applychanges(repo, tr, bmchanges) |
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321 return backupfile |
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322 |
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323 |
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324 def _bookmarkmovements(repo, tostrip): |
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325 # compute necessary bookmark movement |
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326 bm = repo._bookmarks |
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327 updatebm = [] |
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328 for m in bm: |
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329 rev = repo[bm[m]].rev() |
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330 if rev in tostrip: |
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331 updatebm.append(m) |
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332 newbmtarget = None |
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333 # If we need to move bookmarks, compute bookmark |
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334 # targets. Otherwise we can skip doing this logic. |
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335 if updatebm: |
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336 # For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), |
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337 # but is much faster |
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338 newbmtarget = repo.revs(b'max(parents(%ld) - (%ld))', tostrip, tostrip) |
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339 if newbmtarget: |
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340 newbmtarget = repo[newbmtarget.first()].node() |
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341 else: |
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342 newbmtarget = b'.' |
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343 return newbmtarget, updatebm |
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344 |
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345 |
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346 def _createstripbackup(repo, stripbases, node, topic): |
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347 # backup the changeset we are about to strip |
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348 vfs = repo.vfs |
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349 cl = repo.changelog |
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350 backupfile = backupbundle(repo, stripbases, cl.heads(), node, topic) |
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351 repo.ui.status(_(b"saved backup bundle to %s\n") % vfs.join(backupfile)) |
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352 repo.ui.log( |
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353 b"backupbundle", b"saved backup bundle to %s\n", vfs.join(backupfile) |
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354 ) |
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355 return backupfile |
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356 |
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357 |
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358 def safestriproots(ui, repo, nodes): |
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359 """return list of roots of nodes where descendants are covered by nodes""" |
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360 torev = repo.unfiltered().changelog.rev |
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361 revs = {torev(n) for n in nodes} |
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362 # tostrip = wanted - unsafe = wanted - ancestors(orphaned) |
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363 # orphaned = affected - wanted |
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364 # affected = descendants(roots(wanted)) |
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365 # wanted = revs |
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366 revset = b'%ld - ( ::( (roots(%ld):: and not _phase(%s)) -%ld) )' |
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367 tostrip = set(repo.revs(revset, revs, revs, phases.internal, revs)) |
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368 notstrip = revs - tostrip |
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369 if notstrip: |
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370 nodestr = b', '.join(sorted(short(repo[n].node()) for n in notstrip)) |
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371 ui.warn( |
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372 _(b'warning: orphaned descendants detected, not stripping %s\n') |
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373 % nodestr |
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374 ) |
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375 return [c.node() for c in repo.set(b'roots(%ld)', tostrip)] |
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376 |
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377 |
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378 class stripcallback(object): |
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379 """used as a transaction postclose callback""" |
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380 |
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381 def __init__(self, ui, repo, backup, topic): |
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382 self.ui = ui |
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383 self.repo = repo |
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384 self.backup = backup |
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385 self.topic = topic or b'backup' |
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386 self.nodelist = [] |
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387 |
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388 def addnodes(self, nodes): |
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389 self.nodelist.extend(nodes) |
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390 |
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391 def __call__(self, tr): |
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392 roots = safestriproots(self.ui, self.repo, self.nodelist) |
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393 if roots: |
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394 strip(self.ui, self.repo, roots, self.backup, self.topic) |
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395 |
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396 |
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397 def delayedstrip(ui, repo, nodelist, topic=None, backup=True): |
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398 """like strip, but works inside transaction and won't strip irreverent revs |
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399 |
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400 nodelist must explicitly contain all descendants. Otherwise a warning will |
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401 be printed that some nodes are not stripped. |
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402 |
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403 Will do a backup if `backup` is True. The last non-None "topic" will be |
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404 used as the backup topic name. The default backup topic name is "backup". |
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405 """ |
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406 tr = repo.currenttransaction() |
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407 if not tr: |
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408 nodes = safestriproots(ui, repo, nodelist) |
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409 return strip(ui, repo, nodes, backup=backup, topic=topic) |
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410 # transaction postclose callbacks are called in alphabet order. |
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411 # use '\xff' as prefix so we are likely to be called last. |
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412 callback = tr.getpostclose(b'\xffstrip') |
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413 if callback is None: |
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414 callback = stripcallback(ui, repo, backup=backup, topic=topic) |
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415 tr.addpostclose(b'\xffstrip', callback) |
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416 if topic: |
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417 callback.topic = topic |
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418 callback.addnodes(nodelist) |
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419 |
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420 |
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421 def stripmanifest(repo, striprev, tr, files): |
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422 for revlog in manifestrevlogs(repo): |
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423 revlog.strip(striprev, tr) |
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424 |
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425 |
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426 def manifestrevlogs(repo): |
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427 yield repo.manifestlog.getstorage(b'') |
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428 if scmutil.istreemanifest(repo): |
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429 # This logic is safe if treemanifest isn't enabled, but also |
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430 # pointless, so we skip it if treemanifest isn't enabled. |
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431 for unencoded, encoded, size in repo.store.datafiles(): |
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432 if unencoded.startswith(b'meta/') and unencoded.endswith( |
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433 b'00manifest.i' |
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434 ): |
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435 dir = unencoded[5:-12] |
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436 yield repo.manifestlog.getstorage(dir) |
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437 |
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438 |
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439 def rebuildfncache(ui, repo): |
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440 """Rebuilds the fncache file from repo history. |
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441 |
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442 Missing entries will be added. Extra entries will be removed. |
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443 """ |
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444 repo = repo.unfiltered() |
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445 |
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446 if b'fncache' not in repo.requirements: |
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447 ui.warn( |
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448 _( |
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449 b'(not rebuilding fncache because repository does not ' |
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450 b'support fncache)\n' |
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451 ) |
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452 ) |
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453 return |
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454 |
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455 with repo.lock(): |
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456 fnc = repo.store.fncache |
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457 fnc.ensureloaded(warn=ui.warn) |
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458 |
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459 oldentries = set(fnc.entries) |
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460 newentries = set() |
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461 seenfiles = set() |
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462 |
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463 progress = ui.makeprogress( |
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464 _(b'rebuilding'), unit=_(b'changesets'), total=len(repo) |
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465 ) |
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466 for rev in repo: |
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467 progress.update(rev) |
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468 |
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469 ctx = repo[rev] |
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470 for f in ctx.files(): |
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471 # This is to minimize I/O. |
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472 if f in seenfiles: |
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473 continue |
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474 seenfiles.add(f) |
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475 |
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476 i = b'data/%s.i' % f |
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477 d = b'data/%s.d' % f |
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478 |
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479 if repo.store._exists(i): |
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480 newentries.add(i) |
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481 if repo.store._exists(d): |
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482 newentries.add(d) |
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483 |
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484 progress.complete() |
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485 |
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486 if requirements.TREEMANIFEST_REQUIREMENT in repo.requirements: |
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487 # This logic is safe if treemanifest isn't enabled, but also |
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488 # pointless, so we skip it if treemanifest isn't enabled. |
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489 for dir in pathutil.dirs(seenfiles): |
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490 i = b'meta/%s/00manifest.i' % dir |
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491 d = b'meta/%s/00manifest.d' % dir |
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492 |
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493 if repo.store._exists(i): |
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494 newentries.add(i) |
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495 if repo.store._exists(d): |
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496 newentries.add(d) |
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497 |
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498 addcount = len(newentries - oldentries) |
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499 removecount = len(oldentries - newentries) |
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500 for p in sorted(oldentries - newentries): |
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501 ui.write(_(b'removing %s\n') % p) |
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502 for p in sorted(newentries - oldentries): |
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503 ui.write(_(b'adding %s\n') % p) |
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504 |
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505 if addcount or removecount: |
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506 ui.write( |
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507 _(b'%d items added, %d removed from fncache\n') |
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508 % (addcount, removecount) |
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509 ) |
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510 fnc.entries = newentries |
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511 fnc._dirty = True |
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512 |
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513 with repo.transaction(b'fncache') as tr: |
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514 fnc.write(tr) |
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515 else: |
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516 ui.write(_(b'fncache already up to date\n')) |
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517 |
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518 |
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519 def deleteobsmarkers(obsstore, indices): |
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520 """Delete some obsmarkers from obsstore and return how many were deleted |
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521 |
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522 'indices' is a list of ints which are the indices |
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523 of the markers to be deleted. |
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524 |
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525 Every invocation of this function completely rewrites the obsstore file, |
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526 skipping the markers we want to be removed. The new temporary file is |
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527 created, remaining markers are written there and on .close() this file |
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528 gets atomically renamed to obsstore, thus guaranteeing consistency.""" |
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529 if not indices: |
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530 # we don't want to rewrite the obsstore with the same content |
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531 return |
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532 |
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533 left = [] |
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534 current = obsstore._all |
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535 n = 0 |
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536 for i, m in enumerate(current): |
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537 if i in indices: |
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538 n += 1 |
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539 continue |
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540 left.append(m) |
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541 |
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542 newobsstorefile = obsstore.svfs(b'obsstore', b'w', atomictemp=True) |
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543 for bytes in obsolete.encodemarkers(left, True, obsstore._version): |
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544 newobsstorefile.write(bytes) |
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545 newobsstorefile.close() |
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546 return n |