annotate mercurial/tags.py @ 16018:ed9f40bc346f stable

phases: fix verify with secret csets Verify uses repo.cancopy() to detect whether a repo is a plain old local repo, so it was giving a confusing error message when secret changesets were present.
author Matt Mackall <mpm@selenic.com>
date Sun, 29 Jan 2012 13:36:10 -0600
parents 774da7121fc9
children fe9a53726484
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # tags.py - read tag info from local repository
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2 #
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3 # Copyright 2009 Matt Mackall <mpm@selenic.com>
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4 # Copyright 2009 Greg Ward <greg@gerg.ca>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 # Currently this module only deals with reading and caching tags.
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10 # Eventually, it could take care of updating (adding/removing/moving)
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11 # tags too.
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12
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13 from node import nullid, bin, hex, short
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14 from i18n import _
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15 import encoding
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16 import error
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17 import errno
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18
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19 def findglobaltags(ui, repo, alltags, tagtypes):
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20 '''Find global tags in repo by reading .hgtags from every head that
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21 has a distinct version of it, using a cache to avoid excess work.
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22 Updates the dicts alltags, tagtypes in place: alltags maps tag name
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23 to (node, hist) pair (see _readtags() below), and tagtypes maps tag
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24 name to tag type ("global" in this case).'''
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25 # This is so we can be lazy and assume alltags contains only global
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26 # tags when we pass it to _writetagcache().
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27 assert len(alltags) == len(tagtypes) == 0, \
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28 "findglobaltags() should be called first"
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29
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30 (heads, tagfnode, cachetags, shouldwrite) = _readtagcache(ui, repo)
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31 if cachetags is not None:
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32 assert not shouldwrite
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33 # XXX is this really 100% correct? are there oddball special
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34 # cases where a global tag should outrank a local tag but won't,
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35 # because cachetags does not contain rank info?
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36 _updatetags(cachetags, 'global', alltags, tagtypes)
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37 return
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38
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39 seen = set() # set of fnode
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40 fctx = None
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41 for head in reversed(heads): # oldest to newest
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42 assert head in repo.changelog.nodemap, \
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43 "tag cache returned bogus head %s" % short(head)
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44
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45 fnode = tagfnode.get(head)
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46 if fnode and fnode not in seen:
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47 seen.add(fnode)
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48 if not fctx:
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49 fctx = repo.filectx('.hgtags', fileid=fnode)
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50 else:
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51 fctx = fctx.filectx(fnode)
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52
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53 filetags = _readtags(ui, repo, fctx.data().splitlines(), fctx)
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54 _updatetags(filetags, 'global', alltags, tagtypes)
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55
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56 # and update the cache (if necessary)
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57 if shouldwrite:
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58 _writetagcache(ui, repo, heads, tagfnode, alltags)
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59
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60 def readlocaltags(ui, repo, alltags, tagtypes):
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61 '''Read local tags in repo. Update alltags and tagtypes.'''
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62 try:
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63 data = repo.opener.read("localtags")
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64 except IOError, inst:
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65 if inst.errno != errno.ENOENT:
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66 raise
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67 return
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68
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69 # localtags is in the local encoding; re-encode to UTF-8 on
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70 # input for consistency with the rest of this module.
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71 filetags = _readtags(
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72 ui, repo, data.splitlines(), "localtags",
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73 recode=encoding.fromlocal)
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74 _updatetags(filetags, "local", alltags, tagtypes)
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75
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76 def _readtags(ui, repo, lines, fn, recode=None):
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77 '''Read tag definitions from a file (or any source of lines).
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78 Return a mapping from tag name to (node, hist): node is the node id
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79 from the last line read for that name, and hist is the list of node
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80 ids previously associated with it (in file order). All node ids are
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81 binary, not hex.'''
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82
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83 filetags = {} # map tag name to (node, hist)
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84 count = 0
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85
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86 def warn(msg):
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87 ui.warn(_("%s, line %s: %s\n") % (fn, count, msg))
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88
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89 for line in lines:
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90 count += 1
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91 if not line:
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92 continue
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93 try:
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94 (nodehex, name) = line.split(" ", 1)
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95 except ValueError:
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96 warn(_("cannot parse entry"))
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97 continue
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98 name = name.strip()
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99 if recode:
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100 name = recode(name)
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101 try:
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102 nodebin = bin(nodehex)
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103 except TypeError:
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104 warn(_("node '%s' is not well formed") % nodehex)
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105 continue
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106
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107 # update filetags
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108 hist = []
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109 if name in filetags:
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110 n, hist = filetags[name]
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111 hist.append(n)
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112 filetags[name] = (nodebin, hist)
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113 return filetags
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114
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115 def _updatetags(filetags, tagtype, alltags, tagtypes):
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116 '''Incorporate the tag info read from one file into the two
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117 dictionaries, alltags and tagtypes, that contain all tag
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118 info (global across all heads plus local).'''
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119
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120 for name, nodehist in filetags.iteritems():
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121 if name not in alltags:
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122 alltags[name] = nodehist
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123 tagtypes[name] = tagtype
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124 continue
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125
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126 # we prefer alltags[name] if:
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127 # it supercedes us OR
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128 # mutual supercedes and it has a higher rank
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129 # otherwise we win because we're tip-most
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130 anode, ahist = nodehist
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131 bnode, bhist = alltags[name]
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132 if (bnode != anode and anode in bhist and
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133 (bnode not in ahist or len(bhist) > len(ahist))):
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134 anode = bnode
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135 ahist.extend([n for n in bhist if n not in ahist])
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136 alltags[name] = anode, ahist
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137 tagtypes[name] = tagtype
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138
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139
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
140 # The tag cache only stores info about heads, not the tag contents
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
141 # from each head. I.e. it doesn't try to squeeze out the maximum
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
142 # performance, but is simpler has a better chance of actually
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
143 # working correctly. And this gives the biggest performance win: it
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
144 # avoids looking up .hgtags in the manifest for every head, and it
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
145 # can avoid calling heads() at all if there have been no changes to
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
146 # the repo.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
147
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
148 def _readtagcache(ui, repo):
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
149 '''Read the tag cache and return a tuple (heads, fnodes, cachetags,
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
150 shouldwrite). If the cache is completely up-to-date, cachetags is a
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
151 dict of the form returned by _readtags(); otherwise, it is None and
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
152 heads and fnodes are set. In that case, heads is the list of all
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
153 heads currently in the repository (ordered from tip to oldest) and
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
154 fnodes is a mapping from head to .hgtags filenode. If those two are
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
155 set, caller is responsible for reading tag info from each head.'''
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
156
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
157 try:
13341
4e33ef68b1f8 remove pointless os.path.join calls when opening files in .hg/cache
Adrian Buehlmann <adrian@cadifra.com>
parents: 13272
diff changeset
158 cachefile = repo.opener('cache/tags', 'r')
11066
26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
diff changeset
159 # force reading the file for static-http
26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
diff changeset
160 cachelines = iter(cachefile)
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
161 except IOError:
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
162 cachefile = None
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
163
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
164 # The cache file consists of lines like
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
165 # <headrev> <headnode> [<tagnode>]
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
166 # where <headrev> and <headnode> redundantly identify a repository
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
167 # head from the time the cache was written, and <tagnode> is the
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
168 # filenode of .hgtags on that head. Heads with no .hgtags file will
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
169 # have no <tagnode>. The cache is ordered from tip to oldest (which
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
170 # is part of why <headrev> is there: a quick visual check is all
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
171 # that's required to ensure correct order).
9312
c5f0825c1dbb kill trailing whitespace
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9152
diff changeset
172 #
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
173 # This information is enough to let us avoid the most expensive part
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
174 # of finding global tags, which is looking up <tagnode> in the
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
175 # manifest for each head.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
176 cacherevs = [] # list of headrev
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
177 cacheheads = [] # list of headnode
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
178 cachefnode = {} # map headnode to filenode
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
179 if cachefile:
12758
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
180 try:
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
181 for line in cachelines:
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
182 if line == "\n":
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
183 break
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
184 line = line.rstrip().split()
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
185 cacherevs.append(int(line[0]))
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
186 headnode = bin(line[1])
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
187 cacheheads.append(headnode)
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
188 if len(line) == 3:
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
189 fnode = bin(line[2])
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
190 cachefnode[headnode] = fnode
14020
98f79a5c3086 tags: catch more corruption during cache parsing (issue2779)
Matt Mackall <mpm@selenic.com>
parents: 13341
diff changeset
191 except Exception:
13272
5ccdca7df211 move tags.cache and branchheads.cache to a collected cache folder .hg/cache/
jfh <jason@jasonfharris.com>
parents: 13257
diff changeset
192 # corruption of the tags cache, just recompute it
5ccdca7df211 move tags.cache and branchheads.cache to a collected cache folder .hg/cache/
jfh <jason@jasonfharris.com>
parents: 13257
diff changeset
193 ui.warn(_('.hg/cache/tags is corrupt, rebuilding it\n'))
12758
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
194 cacheheads = []
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
195 cacherevs = []
2d754eae430c tags: do not fail if tags.cache is corrupted (issue2444)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11352
diff changeset
196 cachefnode = {}
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
197
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
198 tipnode = repo.changelog.tip()
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
199 tiprev = len(repo.changelog) - 1
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
200
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
201 # Case 1 (common): tip is the same, so nothing has changed.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
202 # (Unchanged tip trivially means no changesets have been added.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
203 # But, thanks to localrepository.destroyed(), it also means none
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
204 # have been destroyed by strip or rollback.)
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
205 if cacheheads and cacheheads[0] == tipnode and cacherevs[0] == tiprev:
11066
26abd91d9e84 static-http: mimic more closely localrepo (issue2164: allow clone -r )
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10263
diff changeset
206 tags = _readtags(ui, repo, cachelines, cachefile.name)
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
207 cachefile.close()
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
208 return (None, None, tags, False)
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
209 if cachefile:
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
210 cachefile.close() # ignore rest of file
9312
c5f0825c1dbb kill trailing whitespace
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9152
diff changeset
211
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
212 repoheads = repo.heads()
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
213 # Case 2 (uncommon): empty repo; get out quickly and don't bother
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
214 # writing an empty cache.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
215 if repoheads == [nullid]:
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
216 return ([], {}, {}, False)
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
217
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
218 # Case 3 (uncommon): cache file missing or empty.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
219
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
220 # Case 4 (uncommon): tip rev decreased. This should only happen
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
221 # when we're called from localrepository.destroyed(). Refresh the
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
222 # cache so future invocations will not see disappeared heads in the
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
223 # cache.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
224
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
225 # Case 5 (common): tip has changed, so we've added/replaced heads.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
226
11352
b19067ee4507 tags: remove inactive debugging code.
Greg Ward <greg-hg@gerg.ca>
parents: 11351
diff changeset
227 # As it happens, the code to handle cases 3, 4, 5 is the same.
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
228
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
229 # N.B. in case 4 (nodes destroyed), "new head" really means "newly
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
230 # exposed".
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
231 newheads = [head
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
232 for head in repoheads
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
233 if head not in set(cacheheads)]
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
234
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
235 # Now we have to lookup the .hgtags filenode for every new head.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
236 # This is the most expensive part of finding tags, so performance
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
237 # depends primarily on the size of newheads. Worst case: no cache
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
238 # file, so newheads == repoheads.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
239 for head in newheads:
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
240 cctx = repo[head]
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
241 try:
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
242 fnode = cctx.filenode('.hgtags')
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
243 cachefnode[head] = fnode
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
244 except error.LookupError:
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
245 # no .hgtags file on this head
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
246 pass
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
247
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
248 # Caller has to iterate over all heads, but can use the filenodes in
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
249 # cachefnode to get to each .hgtags revision quickly.
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
250 return (repoheads, cachefnode, None, True)
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
251
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
Greg Ward <greg-hg@gerg.ca>
parents: 9151
diff changeset
252 def _writetagcache(ui, repo, heads, tagfnode, cachetags):
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
253
9366
9ff178e7b627 tags: don't crash if unable to write tag cache
Greg Ward <greg-hg@gerg.ca>
parents: 9312
diff changeset
254 try:
13341
4e33ef68b1f8 remove pointless os.path.join calls when opening files in .hg/cache
Adrian Buehlmann <adrian@cadifra.com>
parents: 13272
diff changeset
255 cachefile = repo.opener('cache/tags', 'w', atomictemp=True)
9366
9ff178e7b627 tags: don't crash if unable to write tag cache
Greg Ward <greg-hg@gerg.ca>
parents: 9312
diff changeset
256 except (OSError, IOError):
9ff178e7b627 tags: don't crash if unable to write tag cache
Greg Ward <greg-hg@gerg.ca>
parents: 9312
diff changeset
257 return
9151
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
258
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
259 realheads = repo.heads() # for sanity checks below
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
260 for head in heads:
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
261 # temporary sanity checks; these can probably be removed
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
262 # once this code has been in crew for a few weeks
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
263 assert head in repo.changelog.nodemap, \
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
264 'trying to write non-existent node %s to tag cache' % short(head)
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
265 assert head in realheads, \
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
266 'trying to write non-head %s to tag cache' % short(head)
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
267 assert head != nullid, \
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
268 'trying to write nullid to tag cache'
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
269
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
270 # This can't fail because of the first assert above. When/if we
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
271 # remove that assert, we might want to catch LookupError here
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
272 # and downgrade it to a warning.
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
273 rev = repo.changelog.rev(head)
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 9149
diff changeset
274
f528d1a93491 tags: implement persistent tag caching (issue548).
Greg Ward <greg-hg@gerg.ca>
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275 fnode = tagfnode.get(head)
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parents: 9149
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276 if fnode:
f528d1a93491 tags: implement persistent tag caching (issue548).
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parents: 9149
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277 cachefile.write('%d %s %s\n' % (rev, hex(head), hex(fnode)))
f528d1a93491 tags: implement persistent tag caching (issue548).
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parents: 9149
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278 else:
f528d1a93491 tags: implement persistent tag caching (issue548).
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parents: 9149
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279 cachefile.write('%d %s\n' % (rev, hex(head)))
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parents: 9149
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280
9152
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
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parents: 9151
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281 # Tag names in the cache are in UTF-8 -- which is the whole reason
4017291c4c48 tags: support 'instant' tag retrieval (issue548)
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282 # we keep them in UTF-8 throughout this module. If we converted
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parents: 9151
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283 # them local encoding on input, we would lose info writing them to
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parents: 9151
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284 # the cache.
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parents: 9151
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285 cachefile.write('\n')
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parents: 9151
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286 for (name, (node, hist)) in cachetags.iteritems():
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287 cachefile.write("%s %s\n" % (hex(node), name))
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288
14662
2b30124c7d8a tags: don't allow environment errors to be raised from _writetagscache
Steve Borho <steve@borho.org>
parents: 14168
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289 try:
15057
774da7121fc9 atomictempfile: make close() consistent with other file-like objects.
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parents: 14662
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290 cachefile.close()
14662
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parents: 14168
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291 except (OSError, IOError):
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parents: 14168
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292 pass