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annotate mercurial/obsolete.py @ 18001:e02feadd15ea

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
clfilter: unfilter computation of obsolescence related computation All obsolescence related sets need to be computed on the full unfiltered version of the repository, in particular because several of them (obsolete, extinct) are used to compute the hidden revisions. On a filtered repo, revset predicates related to these sets will be properly filtered because of revset's own pre-filtering.
author Pierre-Yves David <pierre-yves.david@ens-lyon.org>
date Mon, 08 Oct 2012 16:55:00 +0200
parents 70b08df24fef
children 4bec77e62c00
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # obsolete.py - obsolete markers handling
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2 #
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3 # Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
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4 # Logilab SA <contact@logilab.fr>
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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 """Obsolete markers handling
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10
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11 An obsolete marker maps an old changeset to a list of new
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12 changesets. If the list of new changesets is empty, the old changeset
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13 is said to be "killed". Otherwise, the old changeset is being
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14 "replaced" by the new changesets.
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15
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16 Obsolete markers can be used to record and distribute changeset graph
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17 transformations performed by history rewriting operations, and help
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18 building new tools to reconciliate conflicting rewriting actions. To
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19 facilitate conflicts resolution, markers include various annotations
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20 besides old and news changeset identifiers, such as creation date or
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21 author name.
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22
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23 The old obsoleted changeset is called "precursor" and possible replacements are
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24 called "successors". Markers that used changeset X as a precursors are called
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25 "successor markers of X" because they hold information about the successors of
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26 X. Markers that use changeset Y as a successors are call "precursor markers of
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27 Y" because they hold information about the precursors of Y.
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28
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29 Examples:
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30
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31 - When changeset A is replacement by a changeset A', one marker is stored:
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32
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33 (A, (A'))
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34
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35 - When changesets A and B are folded into a new changeset C two markers are
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36 stored:
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37
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38 (A, (C,)) and (B, (C,))
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39
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40 - When changeset A is simply "pruned" from the graph, a marker in create:
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41
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42 (A, ())
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43
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44 - When changeset A is split into B and C, a single marker are used:
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45
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46 (A, (C, C))
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47
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48 We use a single marker to distinct the "split" case from the "divergence"
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49 case. If two independants operation rewrite the same changeset A in to A' and
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50 A'' when have an error case: divergent rewriting. We can detect it because
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51 two markers will be created independently:
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52
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53 (A, (B,)) and (A, (C,))
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54
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55 Format
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56 ------
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57
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58 Markers are stored in an append-only file stored in
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59 '.hg/store/obsstore'.
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60
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61 The file starts with a version header:
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62
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63 - 1 unsigned byte: version number, starting at zero.
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64
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65
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66 The header is followed by the markers. Each marker is made of:
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67
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68 - 1 unsigned byte: number of new changesets "R", could be zero.
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69
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70 - 1 unsigned 32-bits integer: metadata size "M" in bytes.
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71
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72 - 1 byte: a bit field. It is reserved for flags used in obsolete
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73 markers common operations, to avoid repeated decoding of metadata
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74 entries.
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75
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76 - 20 bytes: obsoleted changeset identifier.
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77
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78 - N*20 bytes: new changesets identifiers.
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79
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80 - M bytes: metadata as a sequence of nul-terminated strings. Each
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81 string contains a key and a value, separated by a color ':', without
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82 additional encoding. Keys cannot contain '\0' or ':' and values
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83 cannot contain '\0'.
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84 """
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85 import struct
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86 import util, base85, node
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87 from i18n import _
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88
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89 _pack = struct.pack
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90 _unpack = struct.unpack
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91
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92 _SEEK_END = 2 # os.SEEK_END was introduced in Python 2.5
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93
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94 # the obsolete feature is not mature enough to be enabled by default.
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95 # you have to rely on third party extension extension to enable this.
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96 _enabled = False
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97
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98 # data used for parsing and writing
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99 _fmversion = 0
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100 _fmfixed = '>BIB20s'
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101 _fmnode = '20s'
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102 _fmfsize = struct.calcsize(_fmfixed)
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103 _fnodesize = struct.calcsize(_fmnode)
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104
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105 ### obsolescence marker flag
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106
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107 ## bumpedfix flag
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108 #
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109 # When a changeset A' succeed to a changeset A which became public, we call A'
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110 # "bumped" because it's a successors of a public changesets
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111 #
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112 # o A' (bumped)
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113 # |`:
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114 # | o A
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115 # |/
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116 # o Z
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117 #
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118 # The way to solve this situation is to create a new changeset Ad as children
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119 # of A. This changeset have the same content than A'. So the diff from A to A'
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120 # is the same than the diff from A to Ad. Ad is marked as a successors of A'
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121 #
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122 # o Ad
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123 # |`:
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124 # | x A'
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125 # |'|
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126 # o | A
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127 # |/
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128 # o Z
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129 #
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130 # But by transitivity Ad is also a successors of A. To avoid having Ad marked
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131 # as bumped too, we add the `bumpedfix` flag to the marker. <A', (Ad,)>.
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132 # This flag mean that the successors are an interdiff that fix the bumped
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133 # situation, breaking the transitivity of "bumped" here.
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diff changeset
134 bumpedfix = 1
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135
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136 def _readmarkers(data):
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137 """Read and enumerate markers from raw data"""
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diff changeset
138 off = 0
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diff changeset
139 diskversion = _unpack('>B', data[off:off + 1])[0]
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140 off += 1
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diff changeset
141 if diskversion != _fmversion:
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diff changeset
142 raise util.Abort(_('parsing obsolete marker: unknown version %r')
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parents:
diff changeset
143 % diskversion)
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144
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diff changeset
145 # Loop on markers
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diff changeset
146 l = len(data)
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diff changeset
147 while off + _fmfsize <= l:
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diff changeset
148 # read fixed part
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diff changeset
149 cur = data[off:off + _fmfsize]
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diff changeset
150 off += _fmfsize
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diff changeset
151 nbsuc, mdsize, flags, pre = _unpack(_fmfixed, cur)
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diff changeset
152 # read replacement
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153 sucs = ()
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diff changeset
154 if nbsuc:
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diff changeset
155 s = (_fnodesize * nbsuc)
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diff changeset
156 cur = data[off:off + s]
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diff changeset
157 sucs = _unpack(_fmnode * nbsuc, cur)
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diff changeset
158 off += s
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159 # read metadata
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160 # (metadata will be decoded on demand)
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diff changeset
161 metadata = data[off:off + mdsize]
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parents:
diff changeset
162 if len(metadata) != mdsize:
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diff changeset
163 raise util.Abort(_('parsing obsolete marker: metadata is too '
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164 'short, %d bytes expected, got %d')
17253
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165 % (mdsize, len(metadata)))
17070
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166 off += mdsize
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167 yield (pre, sucs, flags, metadata)
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168
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169 def encodemeta(meta):
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170 """Return encoded metadata string to string mapping.
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171
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172 Assume no ':' in key and no '\0' in both key and value."""
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diff changeset
173 for key, value in meta.iteritems():
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parents:
diff changeset
174 if ':' in key or '\0' in key:
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parents:
diff changeset
175 raise ValueError("':' and '\0' are forbidden in metadata key'")
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parents:
diff changeset
176 if '\0' in value:
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diff changeset
177 raise ValueError("':' are forbidden in metadata value'")
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diff changeset
178 return '\0'.join(['%s:%s' % (k, meta[k]) for k in sorted(meta)])
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179
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parents:
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180 def decodemeta(data):
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parents:
diff changeset
181 """Return string to string dictionary from encoded version."""
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diff changeset
182 d = {}
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diff changeset
183 for l in data.split('\0'):
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parents:
diff changeset
184 if l:
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parents:
diff changeset
185 key, value = l.split(':')
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diff changeset
186 d[key] = value
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diff changeset
187 return d
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188
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diff changeset
189 class marker(object):
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190 """Wrap obsolete marker raw data"""
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191
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192 def __init__(self, repo, data):
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193 # the repo argument will be used to create changectx in later version
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194 self._repo = repo
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195 self._data = data
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196 self._decodedmeta = None
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197
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198 def precnode(self):
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199 """Precursor changeset node identifier"""
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diff changeset
200 return self._data[0]
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diff changeset
201
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diff changeset
202 def succnodes(self):
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diff changeset
203 """List of successor changesets node identifiers"""
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204 return self._data[1]
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205
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diff changeset
206 def metadata(self):
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207 """Decoded metadata dictionary"""
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diff changeset
208 if self._decodedmeta is None:
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diff changeset
209 self._decodedmeta = decodemeta(self._data[3])
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diff changeset
210 return self._decodedmeta
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diff changeset
211
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diff changeset
212 def date(self):
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diff changeset
213 """Creation date as (unixtime, offset)"""
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diff changeset
214 parts = self.metadata()['date'].split(' ')
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diff changeset
215 return (float(parts[0]), int(parts[1]))
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diff changeset
216
17070
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217 class obsstore(object):
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218 """Store obsolete markers
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parents:
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219
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parents:
diff changeset
220 Markers can be accessed with two mappings:
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
221 - precursors[x] -> set(markers on precursors edges of x)
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
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parents: 17775
diff changeset
222 - successors[x] -> set(markers on successors edges of x)
17070
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parents:
diff changeset
223 """
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diff changeset
224
17124
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
225 def __init__(self, sopener):
17469
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
226 # caches for various obsolescence related cache
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
227 self.caches = {}
17070
ad0d6c2b3279 obsolete: introduction of obsolete markers
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parents:
diff changeset
228 self._all = []
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parents:
diff changeset
229 # new markers to serialize
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diff changeset
230 self.precursors = {}
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parents:
diff changeset
231 self.successors = {}
17124
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
232 self.sopener = sopener
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
233 data = sopener.tryread('obsstore')
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
234 if data:
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
235 self._load(_readmarkers(data))
17070
ad0d6c2b3279 obsolete: introduction of obsolete markers
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parents:
diff changeset
236
17073
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
237 def __iter__(self):
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
238 return iter(self._all)
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
239
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
240 def __nonzero__(self):
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
241 return bool(self._all)
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
242
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
243 def create(self, transaction, prec, succs=(), flag=0, metadata=None):
17071
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
244 """obsolete: add a new obsolete marker
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
245
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
246 * ensuring it is hashable
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
247 * check mandatory metadata
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
248 * encode metadata
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
249 """
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
250 if metadata is None:
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
251 metadata = {}
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
252 if len(prec) != 20:
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
253 raise ValueError(prec)
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
254 for succ in succs:
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
255 if len(succ) != 20:
17117
217bfb10e6db obsolete: fix error message at marker creation
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17076
diff changeset
256 raise ValueError(succ)
17071
11f26e2669aa command: creation of obsolete marker
Pierre-Yves.David@ens-lyon.org
parents: 17070
diff changeset
257 marker = (str(prec), tuple(succs), int(flag), encodemeta(metadata))
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
258 self.add(transaction, [marker])
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
259
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
260 def add(self, transaction, markers):
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
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parents: 17219
diff changeset
261 """Add new markers to the store
17070
ad0d6c2b3279 obsolete: introduction of obsolete markers
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parents:
diff changeset
262
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
263 Take care of filtering duplicate.
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
264 Return the number of new marker."""
17296
a1f8869f2eee obsolete: introduce an `_enabled` switch to disable the feature by default
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17295
diff changeset
265 if not _enabled:
a1f8869f2eee obsolete: introduce an `_enabled` switch to disable the feature by default
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17295
diff changeset
266 raise util.Abort('obsolete feature is not enabled on this repo')
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
267 new = [m for m in markers if m not in self._all]
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
268 if new:
17125
95d785ccb4e5 obsolete: append new markers to obsstore file instead of rewriting everything
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17124
diff changeset
269 f = self.sopener('obsstore', 'ab')
17124
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
270 try:
17195
48c232873a54 obsolete: add seek to end of file before calling tell (issue3543)
Adrian Buehlmann <adrian@cadifra.com>
parents: 17126
diff changeset
271 # Whether the file's current position is at the begin or at
48c232873a54 obsolete: add seek to end of file before calling tell (issue3543)
Adrian Buehlmann <adrian@cadifra.com>
parents: 17126
diff changeset
272 # the end after opening a file for appending is implementation
48c232873a54 obsolete: add seek to end of file before calling tell (issue3543)
Adrian Buehlmann <adrian@cadifra.com>
parents: 17126
diff changeset
273 # defined. So we must seek to the end before calling tell(),
48c232873a54 obsolete: add seek to end of file before calling tell (issue3543)
Adrian Buehlmann <adrian@cadifra.com>
parents: 17126
diff changeset
274 # or we may get a zero offset for non-zero sized files on
48c232873a54 obsolete: add seek to end of file before calling tell (issue3543)
Adrian Buehlmann <adrian@cadifra.com>
parents: 17126
diff changeset
275 # some platforms (issue3543).
17429
72fa4ef2245f declare local constants instead of using magic values and comments
Mads Kiilerich <mads@kiilerich.com>
parents: 17426
diff changeset
276 f.seek(0, _SEEK_END)
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
277 offset = f.tell()
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
278 transaction.add('obsstore', offset)
17219
494a970f68de obsolete: refactor writemarkers to only encode them
Pierre-Yves.David@ens-lyon.org
parents: 17213
diff changeset
279 # offset == 0: new file - add the version header
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
280 for bytes in _encodemarkers(new, offset == 0):
17219
494a970f68de obsolete: refactor writemarkers to only encode them
Pierre-Yves.David@ens-lyon.org
parents: 17213
diff changeset
281 f.write(bytes)
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
282 finally:
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
283 # XXX: f.close() == filecache invalidation == obsstore rebuilt.
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
284 # call 'filecacheentry.refresh()' here
17124
f1b7683f3f95 obsolete: move obsolete markers read/write logic to obsstore object
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17117
diff changeset
285 f.close()
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
286 self._load(new)
17469
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
287 # new marker *may* have changed several set. invalidate the cache.
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
288 self.caches.clear()
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
289 return len(new)
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
290
17524
a736e1e15e46 spelling: transaction
timeless@mozdev.org
parents: 17516
diff changeset
291 def mergemarkers(self, transaction, data):
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
292 markers = _readmarkers(data)
17524
a736e1e15e46 spelling: transaction
timeless@mozdev.org
parents: 17516
diff changeset
293 self.add(transaction, markers)
17070
ad0d6c2b3279 obsolete: introduction of obsolete markers
Pierre-Yves.David@ens-lyon.org
parents:
diff changeset
294
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
295 def _load(self, markers):
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
296 for mark in markers:
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
297 self._all.append(mark)
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
298 pre, sucs = mark[:2]
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
299 self.successors.setdefault(pre, set()).add(mark)
17220
bdac214a4705 obsolete: obsstore.add now takes a list of markers.
Pierre-Yves.David@ens-lyon.org
parents: 17219
diff changeset
300 for suc in sucs:
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
301 self.precursors.setdefault(suc, set()).add(mark)
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
302 if node.nullid in self.precursors:
17774
0496d4f73cf4 obsolete: cheap detection of nullid as successors
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17537
diff changeset
303 raise util.Abort(_('bad obsolescence marker detected: '
0496d4f73cf4 obsolete: cheap detection of nullid as successors
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17537
diff changeset
304 'invalid successors nullid'))
17070
ad0d6c2b3279 obsolete: introduction of obsolete markers
Pierre-Yves.David@ens-lyon.org
parents:
diff changeset
305
17219
494a970f68de obsolete: refactor writemarkers to only encode them
Pierre-Yves.David@ens-lyon.org
parents: 17213
diff changeset
306 def _encodemarkers(markers, addheader=False):
17125
95d785ccb4e5 obsolete: append new markers to obsstore file instead of rewriting everything
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17124
diff changeset
307 # Kept separate from flushmarkers(), it will be reused for
95d785ccb4e5 obsolete: append new markers to obsstore file instead of rewriting everything
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17124
diff changeset
308 # markers exchange.
17219
494a970f68de obsolete: refactor writemarkers to only encode them
Pierre-Yves.David@ens-lyon.org
parents: 17213
diff changeset
309 if addheader:
494a970f68de obsolete: refactor writemarkers to only encode them
Pierre-Yves.David@ens-lyon.org
parents: 17213
diff changeset
310 yield _pack('>B', _fmversion)
17125
95d785ccb4e5 obsolete: append new markers to obsstore file instead of rewriting everything
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17124
diff changeset
311 for marker in markers:
17295
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
312 yield _encodeonemarker(marker)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
313
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
314
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
315 def _encodeonemarker(marker):
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
316 pre, sucs, flags, metadata = marker
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
317 nbsuc = len(sucs)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
318 format = _fmfixed + (_fmnode * nbsuc)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
319 data = [nbsuc, len(metadata), flags, pre]
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
320 data.extend(sucs)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
321 return _pack(format, *data) + metadata
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
322
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
323 # arbitrary picked to fit into 8K limit from HTTP server
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
324 # you have to take in account:
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
325 # - the version header
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
326 # - the base85 encoding
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
327 _maxpayload = 5300
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
328
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
329 def listmarkers(repo):
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
330 """List markers over pushkey"""
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
331 if not repo.obsstore:
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
332 return {}
17295
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
333 keys = {}
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
334 parts = []
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
335 currentlen = _maxpayload * 2 # ensure we create a new part
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
336 for marker in repo.obsstore:
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
337 nextdata = _encodeonemarker(marker)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
338 if (len(nextdata) + currentlen > _maxpayload):
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
339 currentpart = []
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
340 currentlen = 0
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
341 parts.append(currentpart)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
342 currentpart.append(nextdata)
17304
0368fc55d572 obsolete: properly increment currentlen when building pushkey payload
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17298
diff changeset
343 currentlen += len(nextdata)
17295
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
344 for idx, part in enumerate(reversed(parts)):
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
345 data = ''.join([_pack('>B', _fmversion)] + part)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
346 keys['dump%i' % idx] = base85.b85encode(data)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
347 return keys
17073
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
348
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
349 def pushmarker(repo, key, old, new):
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
350 """Push markers over pushkey"""
17295
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
351 if not key.startswith('dump'):
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
352 repo.ui.warn(_('unknown key: %r') % key)
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
353 return 0
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
354 if old:
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
355 repo.ui.warn(_('unexpected old value') % key)
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
356 return 0
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
357 data = base85.b85decode(new)
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
358 lock = repo.lock()
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
359 try:
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
360 tr = repo.transaction('pushkey: obsolete markers')
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
361 try:
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
362 repo.obsstore.mergemarkers(tr, data)
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
363 tr.close()
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
364 return 1
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
365 finally:
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
366 tr.release()
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
367 finally:
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
368 lock.release()
17073
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
369
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
370 def allmarkers(repo):
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
371 """all obsolete markers known in a repository"""
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
372 for markerdata in repo.obsstore:
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
373 yield marker(repo, markerdata)
3a79a5682af1 obsolete: add easy way to iterate over obsolete marker object
Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
374
17076
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
375 def precursormarkers(ctx):
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
376 """obsolete marker marking this changeset as a successors"""
17076
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
377 for data in ctx._repo.obsstore.precursors.get(ctx.node(), ()):
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
378 yield marker(ctx._repo, data)
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
379
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
380 def successormarkers(ctx):
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
381 """obsolete marker making this changeset obsolete"""
17076
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
382 for data in ctx._repo.obsstore.successors.get(ctx.node(), ()):
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
383 yield marker(ctx._repo, data)
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
384
17831
70b08df24fef obsolete: add a flag that allows fixing "bumped" changeset
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17828
diff changeset
385 def allsuccessors(obsstore, nodes, ignoreflags=0):
17827
612db9d7e76a obsolete: have `allsuccessors` takes a list of nodes
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17826
diff changeset
386 """Yield node for every successor of <nodes>.
612db9d7e76a obsolete: have `allsuccessors` takes a list of nodes
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17826
diff changeset
387
612db9d7e76a obsolete: have `allsuccessors` takes a list of nodes
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17826
diff changeset
388 Some successors may be unknown locally.
17213
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
389
17537
31f32a96e1e3 Merge spelling fixes
Bryan O'Sullivan <bryano@fb.com>
parents: 17474 17524
diff changeset
390 This is a linear yield unsuited to detecting split changesets."""
17827
612db9d7e76a obsolete: have `allsuccessors` takes a list of nodes
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17826
diff changeset
391 remaining = set(nodes)
17213
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
392 seen = set(remaining)
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
393 while remaining:
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
394 current = remaining.pop()
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
395 yield current
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17775
diff changeset
396 for mark in obsstore.successors.get(current, ()):
17831
70b08df24fef obsolete: add a flag that allows fixing "bumped" changeset
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17828
diff changeset
397 # ignore marker flagged with with specified flag
70b08df24fef obsolete: add a flag that allows fixing "bumped" changeset
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17828
diff changeset
398 if mark[2] & ignoreflags:
70b08df24fef obsolete: add a flag that allows fixing "bumped" changeset
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17828
diff changeset
399 continue
17213
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
400 for suc in mark[1]:
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
401 if suc not in seen:
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
402 seen.add(suc)
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
403 remaining.add(suc)
17469
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
404
17828
9495be4126ef obsolete: add the detection of bumped changeset.
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17827
diff changeset
405 def _knownrevs(repo, nodes):
9495be4126ef obsolete: add the detection of bumped changeset.
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17827
diff changeset
406 """yield revision numbers of known nodes passed in parameters
9495be4126ef obsolete: add the detection of bumped changeset.
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17827
diff changeset
407
9495be4126ef obsolete: add the detection of bumped changeset.
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17827
diff changeset
408 Unknown revisions are silently ignored."""
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parents: 17827
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409 torev = repo.changelog.nodemap.get
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parents: 17827
diff changeset
410 for n in nodes:
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parents: 17827
diff changeset
411 rev = torev(n)
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parents: 17827
diff changeset
412 if rev is not None:
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parents: 17827
diff changeset
413 yield rev
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parents: 17827
diff changeset
414
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diff changeset
415 # mapping of 'set-name' -> <function to compute this set>
17469
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416 cachefuncs = {}
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417 def cachefor(name):
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418 """Decorator to register a function as computing the cache for a set"""
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419 def decorator(func):
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parents: 17429
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420 assert name not in cachefuncs
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diff changeset
421 cachefuncs[name] = func
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422 return func
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423 return decorator
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424
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425 def getrevs(repo, name):
17469
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426 """Return the set of revision that belong to the <name> set
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parents: 17429
diff changeset
427
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428 Such access may compute the set and cache it for future use"""
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parents: 17831
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429 repo = repo.unfiltered()
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430 if not repo.obsstore:
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431 return ()
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432 if name not in repo.obsstore.caches:
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433 repo.obsstore.caches[name] = cachefuncs[name](repo)
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434 return repo.obsstore.caches[name]
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435
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436 # To be simple we need to invalidate obsolescence cache when:
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parents: 17429
diff changeset
437 #
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diff changeset
438 # - new changeset is added:
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diff changeset
439 # - public phase is changed
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diff changeset
440 # - obsolescence marker are added
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diff changeset
441 # - strip is used a repo
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442 def clearobscaches(repo):
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443 """Remove all obsolescence related cache from a repo
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444
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445 This remove all cache in obsstore is the obsstore already exist on the
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parents: 17429
diff changeset
446 repo.
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diff changeset
447
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448 (We could be smarter here given the exact event that trigger the cache
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parents: 17429
diff changeset
449 clearing)"""
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parents: 17429
diff changeset
450 # only clear cache is there is obsstore data in this repo
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parents: 17429
diff changeset
451 if 'obsstore' in repo._filecache:
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parents: 17429
diff changeset
452 repo.obsstore.caches.clear()
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diff changeset
453
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diff changeset
454 @cachefor('obsolete')
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diff changeset
455 def _computeobsoleteset(repo):
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parents: 17429
diff changeset
456 """the set of obsolete revisions"""
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diff changeset
457 obs = set()
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diff changeset
458 nm = repo.changelog.nodemap
17776
072812e9f570 obsolete: flip `obstore.successors` and `obsolete.precursors`
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parents: 17775
diff changeset
459 for node in repo.obsstore.successors:
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parents: 17775
diff changeset
460 rev = nm.get(node)
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diff changeset
461 if rev is not None:
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diff changeset
462 obs.add(rev)
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diff changeset
463 return set(repo.revs('%ld - public()', obs))
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parents: 17429
diff changeset
464
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diff changeset
465 @cachefor('unstable')
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diff changeset
466 def _computeunstableset(repo):
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diff changeset
467 """the set of non obsolete revisions with obsolete parents"""
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parents: 17429
diff changeset
468 return set(repo.revs('(obsolete()::) - obsolete()'))
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diff changeset
469
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diff changeset
470 @cachefor('suspended')
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diff changeset
471 def _computesuspendedset(repo):
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diff changeset
472 """the set of obsolete parents with non obsolete descendants"""
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parents: 17429
diff changeset
473 return set(repo.revs('obsolete() and obsolete()::unstable()'))
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parents: 17429
diff changeset
474
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diff changeset
475 @cachefor('extinct')
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diff changeset
476 def _computeextinctset(repo):
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parents: 17429
diff changeset
477 """the set of obsolete parents without non obsolete descendants"""
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parents: 17429
diff changeset
478 return set(repo.revs('obsolete() - obsolete()::unstable()'))
17474
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diff changeset
479
17828
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diff changeset
480
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diff changeset
481 @cachefor('bumped')
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diff changeset
482 def _computebumpedset(repo):
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diff changeset
483 """the set of revs trying to obsolete public revisions"""
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diff changeset
484 # get all possible bumped changesets
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Pierre-Yves David <pierre-yves.david@logilab.fr>
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diff changeset
485 tonode = repo.changelog.node
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diff changeset
486 publicnodes = (tonode(r) for r in repo.revs('public()'))
17831
70b08df24fef obsolete: add a flag that allows fixing "bumped" changeset
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parents: 17828
diff changeset
487 successors = allsuccessors(repo.obsstore, publicnodes,
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parents: 17828
diff changeset
488 ignoreflags=bumpedfix)
17828
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parents: 17827
diff changeset
489 # revision public or already obsolete don't count as bumped
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parents: 17827
diff changeset
490 query = '%ld - obsolete() - public()'
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17827
diff changeset
491 return set(repo.revs(query, _knownrevs(repo, successors)))
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parents: 17827
diff changeset
492
17474
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diff changeset
493 def createmarkers(repo, relations, flag=0, metadata=None):
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diff changeset
494 """Add obsolete markers between changesets in a repo
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diff changeset
495
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parents: 17469
diff changeset
496 <relations> must be an iterable of (<old>, (<new>, ...)) tuple.
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parents: 17469
diff changeset
497 `old` and `news` are changectx.
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parents: 17469
diff changeset
498
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parents: 17469
diff changeset
499 Trying to obsolete a public changeset will raise an exception.
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parents: 17469
diff changeset
500
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parents: 17469
diff changeset
501 Current user and date are used except if specified otherwise in the
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parents: 17469
diff changeset
502 metadata attribute.
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diff changeset
503
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parents: 17469
diff changeset
504 This function operates within a transaction of its own, but does
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parents: 17469
diff changeset
505 not take any lock on the repo.
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parents: 17469
diff changeset
506 """
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parents: 17469
diff changeset
507 # prepare metadata
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parents: 17469
diff changeset
508 if metadata is None:
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parents: 17469
diff changeset
509 metadata = {}
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diff changeset
510 if 'date' not in metadata:
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parents: 17469
diff changeset
511 metadata['date'] = '%i %i' % util.makedate()
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parents: 17469
diff changeset
512 if 'user' not in metadata:
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parents: 17469
diff changeset
513 metadata['user'] = repo.ui.username()
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parents: 17469
diff changeset
514 tr = repo.transaction('add-obsolescence-marker')
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parents: 17469
diff changeset
515 try:
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parents: 17469
diff changeset
516 for prec, sucs in relations:
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parents: 17469
diff changeset
517 if not prec.mutable():
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parents: 17469
diff changeset
518 raise util.Abort("cannot obsolete immutable changeset: %s"
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parents: 17469
diff changeset
519 % prec)
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parents: 17469
diff changeset
520 nprec = prec.node()
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parents: 17469
diff changeset
521 nsucs = tuple(s.node() for s in sucs)
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parents: 17469
diff changeset
522 if nprec in nsucs:
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parents: 17469
diff changeset
523 raise util.Abort("changeset %s cannot obsolete itself" % prec)
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parents: 17469
diff changeset
524 repo.obsstore.create(tr, nprec, nsucs, flag, metadata)
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parents: 17469
diff changeset
525 tr.close()
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diff changeset
526 finally:
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parents: 17469
diff changeset
527 tr.release()