annotate mercurial/unionrepo.py @ 39857:8dab7c8a93eb

upgrade: report size of backing files, not internal storage size upgrade.py is the only consumer of filelog.index, which I'd like to eliminate from the file storage interface. This commit changes the upgrade code to report the storage size of files by looking at the size of the files backing its storage instead of looking at the index. I'm not convinced the approach in this patch will live very long because it is relying on low-level attributes like "opener" and "files," which may behave very differently on non-revlog storage. But the data is only used for reporting purposes and it does get us one step closer to eliminating "index." A side-effect of this change is we now report the size of the revlog index data - not just the revision data. I think this is more accurate. Differential Revision: https://phab.mercurial-scm.org/D4717
author Gregory Szorc <gregory.szorc@gmail.com>
date Mon, 24 Sep 2018 09:37:19 -0700
parents 39f51064e9f5
children 55db747a21ad
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1 # unionrepo.py - repository class for viewing union of repository changesets
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2 #
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3 # Derived from bundlerepo.py
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4 # Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.com>
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5 # Copyright 2013 Unity Technologies, Mads Kiilerich <madski@unity3d.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9
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10 """Repository class for "in-memory pull" of one local repository to another,
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11 allowing operations like diff and log with revsets.
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12 """
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13
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14 from __future__ import absolute_import
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15
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16 from .i18n import _
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17 from .node import nullid
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18
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19 from . import (
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20 changelog,
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21 cmdutil,
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22 encoding,
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23 error,
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24 filelog,
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25 localrepo,
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26 manifest,
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27 mdiff,
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28 pathutil,
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29 revlog,
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30 util,
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31 vfs as vfsmod,
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32 )
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33
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34 class unionrevlog(revlog.revlog):
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35 def __init__(self, opener, indexfile, revlog2, linkmapper):
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36 # How it works:
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37 # To retrieve a revision, we just need to know the node id so we can
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38 # look it up in revlog2.
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39 #
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40 # To differentiate a rev in the second revlog from a rev in the revlog,
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41 # we check revision against repotiprev.
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42 opener = vfsmod.readonlyvfs(opener)
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43 revlog.revlog.__init__(self, opener, indexfile)
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44 self.revlog2 = revlog2
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45
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46 n = len(self)
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47 self.repotiprev = n - 1
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48 self.bundlerevs = set() # used by 'bundle()' revset expression
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49 for rev2 in self.revlog2:
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50 rev = self.revlog2.index[rev2]
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51 # rev numbers - in revlog2, very different from self.rev
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52 _start, _csize, rsize, base, linkrev, p1rev, p2rev, node = rev
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53 flags = _start & 0xFFFF
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54
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55 if linkmapper is None: # link is to same revlog
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56 assert linkrev == rev2 # we never link back
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57 link = n
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58 else: # rev must be mapped from repo2 cl to unified cl by linkmapper
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59 link = linkmapper(linkrev)
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60
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61 if linkmapper is not None: # link is to same revlog
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62 base = linkmapper(base)
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63
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64 if node in self.nodemap:
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65 # this happens for the common revlog revisions
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66 self.bundlerevs.add(self.nodemap[node])
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67 continue
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68
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69 p1node = self.revlog2.node(p1rev)
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70 p2node = self.revlog2.node(p2rev)
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71
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72 # TODO: it's probably wrong to set compressed length to None, but
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73 # I have no idea if csize is valid in the base revlog context.
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74 e = (flags, None, rsize, base,
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75 link, self.rev(p1node), self.rev(p2node), node)
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76 self.index.append(e)
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77 self.nodemap[node] = n
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78 self.bundlerevs.add(n)
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79 n += 1
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80
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81 def _chunk(self, rev):
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82 if rev <= self.repotiprev:
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83 return revlog.revlog._chunk(self, rev)
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84 return self.revlog2._chunk(self.node(rev))
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85
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86 def revdiff(self, rev1, rev2):
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87 """return or calculate a delta between two revisions"""
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88 if rev1 > self.repotiprev and rev2 > self.repotiprev:
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89 return self.revlog2.revdiff(
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90 self.revlog2.rev(self.node(rev1)),
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91 self.revlog2.rev(self.node(rev2)))
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92 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev:
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93 return self.baserevdiff(rev1, rev2)
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94
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95 return mdiff.textdiff(self.revision(rev1), self.revision(rev2))
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96
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97 def revision(self, nodeorrev, _df=None, raw=False):
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98 """return an uncompressed revision of a given node or revision
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99 number.
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100 """
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101 if isinstance(nodeorrev, int):
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102 rev = nodeorrev
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103 node = self.node(rev)
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104 else:
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105 node = nodeorrev
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106 rev = self.rev(node)
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107
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108 if node == nullid:
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109 return ""
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110
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111 if rev > self.repotiprev:
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112 text = self.revlog2.revision(node)
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113 self._cache = (node, rev, text)
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114 else:
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115 text = self.baserevision(rev)
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116 # already cached
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117 return text
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118
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119 def baserevision(self, nodeorrev):
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120 # Revlog subclasses may override 'revision' method to modify format of
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121 # content retrieved from revlog. To use unionrevlog with such class one
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122 # needs to override 'baserevision' and make more specific call here.
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123 return revlog.revlog.revision(self, nodeorrev)
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124
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125 def baserevdiff(self, rev1, rev2):
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126 # Exists for the same purpose as baserevision.
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127 return revlog.revlog.revdiff(self, rev1, rev2)
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128
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129 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
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130 raise NotImplementedError
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131 def addgroup(self, deltas, transaction, addrevisioncb=None):
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132 raise NotImplementedError
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133 def strip(self, rev, minlink):
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134 raise NotImplementedError
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135 def checksize(self):
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136 raise NotImplementedError
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137
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138 class unionchangelog(unionrevlog, changelog.changelog):
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139 def __init__(self, opener, opener2):
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140 changelog.changelog.__init__(self, opener)
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141 linkmapper = None
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142 changelog2 = changelog.changelog(opener2)
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143 unionrevlog.__init__(self, opener, self.indexfile, changelog2,
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144 linkmapper)
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145
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146 def baserevision(self, nodeorrev):
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147 # Although changelog doesn't override 'revision' method, some extensions
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148 # may replace this class with another that does. Same story with
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149 # manifest and filelog classes.
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150 return changelog.changelog.revision(self, nodeorrev)
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151
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152 def baserevdiff(self, rev1, rev2):
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153 return changelog.changelog.revdiff(self, rev1, rev2)
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154
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155 class unionmanifest(unionrevlog, manifest.manifestrevlog):
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156 def __init__(self, opener, opener2, linkmapper):
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157 manifest.manifestrevlog.__init__(self, opener)
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158 manifest2 = manifest.manifestrevlog(opener2)
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159 unionrevlog.__init__(self, opener, self.indexfile, manifest2,
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160 linkmapper)
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161
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162 def baserevision(self, nodeorrev):
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163 return manifest.manifestrevlog.revision(self, nodeorrev)
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164
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165 def baserevdiff(self, rev1, rev2):
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166 return manifest.manifestrevlog.revdiff(self, rev1, rev2)
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167
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168 class unionfilelog(filelog.filelog):
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169 def __init__(self, opener, path, opener2, linkmapper, repo):
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170 filelog.filelog.__init__(self, opener, path)
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171 filelog2 = filelog.filelog(opener2, path)
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172 self._revlog = unionrevlog(opener, self.indexfile,
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173 filelog2._revlog, linkmapper)
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174 self._repo = repo
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175 self.repotiprev = self._revlog.repotiprev
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176 self.revlog2 = self._revlog.revlog2
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177
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178 def baserevision(self, nodeorrev):
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179 return filelog.filelog.revision(self, nodeorrev)
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180
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181 def baserevdiff(self, rev1, rev2):
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182 return filelog.filelog.revdiff(self, rev1, rev2)
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183
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184 def iscensored(self, rev):
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185 """Check if a revision is censored."""
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186 if rev <= self.repotiprev:
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187 return filelog.filelog.iscensored(self, rev)
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diff changeset
188 node = self.node(rev)
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diff changeset
189 return self.revlog2.iscensored(self.revlog2.rev(node))
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190
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191 class unionpeer(localrepo.localpeer):
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192 def canpush(self):
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193 return False
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194
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195 class unionrepository(object):
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196 """Represents the union of data in 2 repositories.
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197
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198 Instances are not usable if constructed directly. Use ``instance()``
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199 or ``makeunionrepository()`` to create a usable instance.
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200 """
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201 def __init__(self, repo2, url):
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202 self.repo2 = repo2
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203 self._url = url
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204
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diff changeset
205 self.ui.setconfig('phases', 'publish', False, 'unionrepo')
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206
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207 @localrepo.unfilteredpropertycache
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208 def changelog(self):
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diff changeset
209 return unionchangelog(self.svfs, self.repo2.svfs)
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210
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diff changeset
211 @localrepo.unfilteredpropertycache
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diff changeset
212 def manifestlog(self):
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parents: 39605
diff changeset
213 rootstore = unionmanifest(self.svfs, self.repo2.svfs,
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parents: 39605
diff changeset
214 self.unfiltered()._clrev)
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parents: 39605
diff changeset
215 return manifest.manifestlog(self.svfs, self, rootstore)
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diff changeset
216
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diff changeset
217 def _clrev(self, rev2):
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diff changeset
218 """map from repo2 changelog rev to temporary rev in self.changelog"""
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diff changeset
219 node = self.repo2.changelog.node(rev2)
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220 return self.changelog.rev(node)
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221
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diff changeset
222 def url(self):
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diff changeset
223 return self._url
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diff changeset
224
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diff changeset
225 def file(self, f):
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diff changeset
226 return unionfilelog(self.svfs, f, self.repo2.svfs,
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b966e35aad78 unionrepo: properly handle hidden linkrev in revlog (issue5070)
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parents: 27750
diff changeset
227 self.unfiltered()._clrev, self)
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228
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diff changeset
229 def close(self):
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diff changeset
230 self.repo2.close()
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diff changeset
231
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diff changeset
232 def cancopy(self):
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diff changeset
233 return False
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234
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diff changeset
235 def peer(self):
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diff changeset
236 return unionpeer(self)
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237
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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diff changeset
238 def getcwd(self):
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24e493ec2229 py3: rename pycompat.getcwd() to encoding.getcwd() (API)
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parents: 39763
diff changeset
239 return encoding.getcwd() # always outside the repo
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diff changeset
240
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089fc0db0954 hg: allow extra arguments to be passed to repo creation (API)
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parents: 38850
diff changeset
241 def instance(ui, path, create, intents=None, createopts=None):
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parents:
diff changeset
242 if create:
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26230
diff changeset
243 raise error.Abort(_('cannot create new union repository'))
33182
634997248c97 configitems: register the 'bundle.mainreporoot' config
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 31724
diff changeset
244 parentpath = ui.config("bundle", "mainreporoot")
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parents:
diff changeset
245 if not parentpath:
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diff changeset
246 # try to find the correct path to the working directory repo
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Matt Harbison <matt_harbison@yahoo.com>
parents: 39763
diff changeset
247 parentpath = cmdutil.findrepo(encoding.getcwd())
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diff changeset
248 if parentpath is None:
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diff changeset
249 parentpath = ''
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diff changeset
250 if parentpath:
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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parents:
diff changeset
251 # Try to make the full path relative so we get a nice, short URL.
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diff changeset
252 # In particular, we don't want temp dir names in test outputs.
39818
24e493ec2229 py3: rename pycompat.getcwd() to encoding.getcwd() (API)
Matt Harbison <matt_harbison@yahoo.com>
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253 cwd = encoding.getcwd()
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254 if parentpath == cwd:
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255 parentpath = ''
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256 else:
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257 cwd = pathutil.normasprefix(cwd)
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258 if parentpath.startswith(cwd):
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259 parentpath = parentpath[len(cwd):]
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260 if path.startswith('union:'):
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261 s = path.split(":", 1)[1].split("+", 1)
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262 if len(s) == 1:
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263 repopath, repopath2 = parentpath, s[0]
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264 else:
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265 repopath, repopath2 = s
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266 else:
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267 repopath, repopath2 = parentpath, path
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268
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269 return makeunionrepository(ui, repopath, repopath2)
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270
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271 def makeunionrepository(ui, repopath1, repopath2):
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272 """Make a union repository object from 2 local repo paths."""
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273 repo1 = localrepo.instance(ui, repopath1, create=False)
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274 repo2 = localrepo.instance(ui, repopath2, create=False)
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275
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276 url = 'union:%s+%s' % (util.expandpath(repopath1),
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277 util.expandpath(repopath2))
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278
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279 class derivedunionrepository(unionrepository, repo1.__class__):
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280 pass
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281
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282 repo = repo1
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283 repo.__class__ = derivedunionrepository
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284 unionrepository.__init__(repo1, repo2, url)
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285
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286 return repo