Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/obsolete.py @ 17474:f85816af6294

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obsolete: add a high level function to create an obsolete marker This function is designed to be used by all code that creates new obsolete markers in the local repository. It is not used by debugobsolete because debugobsolete allows the use of an unknown hash as argument.
author Pierre-Yves David <pierre-yves.david@logilab.fr>
date Fri, 24 Aug 2012 21:16:23 +0200
parents fb72eec7efd8
children 31f32a96e1e3
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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
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24 Format
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25 ------
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26
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27 Markers are stored in an append-only file stored in
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28 '.hg/store/obsstore'.
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29
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30 The file starts with a version header:
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31
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32 - 1 unsigned byte: version number, starting at zero.
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33
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34
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35 The header is followed by the markers. Each marker is made of:
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36
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37 - 1 unsigned byte: number of new changesets "R", could be zero.
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38
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39 - 1 unsigned 32-bits integer: metadata size "M" in bytes.
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40
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41 - 1 byte: a bit field. It is reserved for flags used in obsolete
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42 markers common operations, to avoid repeated decoding of metadata
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43 entries.
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44
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45 - 20 bytes: obsoleted changeset identifier.
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46
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47 - N*20 bytes: new changesets identifiers.
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48
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49 - M bytes: metadata as a sequence of nul-terminated strings. Each
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50 string contains a key and a value, separated by a color ':', without
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51 additional encoding. Keys cannot contain '\0' or ':' and values
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52 cannot contain '\0'.
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53 """
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54 import struct
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55 import util, base85
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56 from i18n import _
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57
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58 _pack = struct.pack
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59 _unpack = struct.unpack
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60
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61 _SEEK_END = 2 # os.SEEK_END was introduced in Python 2.5
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62
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63 # the obsolete feature is not mature enough to be enabled by default.
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64 # you have to rely on third party extension extension to enable this.
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65 _enabled = False
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66
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67 # data used for parsing and writing
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68 _fmversion = 0
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69 _fmfixed = '>BIB20s'
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70 _fmnode = '20s'
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71 _fmfsize = struct.calcsize(_fmfixed)
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72 _fnodesize = struct.calcsize(_fmnode)
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73
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74 def _readmarkers(data):
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75 """Read and enumerate markers from raw data"""
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76 off = 0
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77 diskversion = _unpack('>B', data[off:off + 1])[0]
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78 off += 1
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79 if diskversion != _fmversion:
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80 raise util.Abort(_('parsing obsolete marker: unknown version %r')
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81 % diskversion)
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82
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83 # Loop on markers
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84 l = len(data)
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85 while off + _fmfsize <= l:
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86 # read fixed part
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87 cur = data[off:off + _fmfsize]
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88 off += _fmfsize
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89 nbsuc, mdsize, flags, pre = _unpack(_fmfixed, cur)
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90 # read replacement
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91 sucs = ()
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92 if nbsuc:
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93 s = (_fnodesize * nbsuc)
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94 cur = data[off:off + s]
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95 sucs = _unpack(_fmnode * nbsuc, cur)
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96 off += s
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97 # read metadata
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98 # (metadata will be decoded on demand)
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99 metadata = data[off:off + mdsize]
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100 if len(metadata) != mdsize:
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101 raise util.Abort(_('parsing obsolete marker: metadata is too '
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102 'short, %d bytes expected, got %d')
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103 % (mdsize, len(metadata)))
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104 off += mdsize
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105 yield (pre, sucs, flags, metadata)
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106
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107 def encodemeta(meta):
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108 """Return encoded metadata string to string mapping.
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109
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110 Assume no ':' in key and no '\0' in both key and value."""
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111 for key, value in meta.iteritems():
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112 if ':' in key or '\0' in key:
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113 raise ValueError("':' and '\0' are forbidden in metadata key'")
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114 if '\0' in value:
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115 raise ValueError("':' are forbidden in metadata value'")
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116 return '\0'.join(['%s:%s' % (k, meta[k]) for k in sorted(meta)])
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117
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118 def decodemeta(data):
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119 """Return string to string dictionary from encoded version."""
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120 d = {}
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121 for l in data.split('\0'):
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122 if l:
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123 key, value = l.split(':')
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124 d[key] = value
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125 return d
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126
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127 class marker(object):
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128 """Wrap obsolete marker raw data"""
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129
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130 def __init__(self, repo, data):
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131 # the repo argument will be used to create changectx in later version
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132 self._repo = repo
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133 self._data = data
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134 self._decodedmeta = None
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135
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136 def precnode(self):
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137 """Precursor changeset node identifier"""
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138 return self._data[0]
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139
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140 def succnodes(self):
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141 """List of successor changesets node identifiers"""
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142 return self._data[1]
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143
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144 def metadata(self):
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145 """Decoded metadata dictionary"""
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146 if self._decodedmeta is None:
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147 self._decodedmeta = decodemeta(self._data[3])
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148 return self._decodedmeta
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149
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150 def date(self):
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151 """Creation date as (unixtime, offset)"""
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152 parts = self.metadata()['date'].split(' ')
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153 return (float(parts[0]), int(parts[1]))
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154
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155 class obsstore(object):
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156 """Store obsolete markers
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157
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158 Markers can be accessed with two mappings:
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159 - precursors: old -> set(new)
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160 - successors: new -> set(old)
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161 """
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162
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163 def __init__(self, sopener):
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164 # caches for various obsolescence related cache
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165 self.caches = {}
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166 self._all = []
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167 # new markers to serialize
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168 self.precursors = {}
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169 self.successors = {}
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170 self.sopener = sopener
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171 data = sopener.tryread('obsstore')
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172 if data:
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173 self._load(_readmarkers(data))
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174
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175 def __iter__(self):
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176 return iter(self._all)
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177
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178 def __nonzero__(self):
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179 return bool(self._all)
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180
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181 def create(self, transaction, prec, succs=(), flag=0, metadata=None):
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182 """obsolete: add a new obsolete marker
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183
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184 * ensuring it is hashable
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185 * check mandatory metadata
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186 * encode metadata
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187 """
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188 if metadata is None:
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189 metadata = {}
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190 if len(prec) != 20:
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191 raise ValueError(prec)
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192 for succ in succs:
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193 if len(succ) != 20:
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194 raise ValueError(succ)
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195 marker = (str(prec), tuple(succs), int(flag), encodemeta(metadata))
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196 self.add(transaction, [marker])
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197
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198 def add(self, transaction, markers):
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199 """Add new markers to the store
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200
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201 Take care of filtering duplicate.
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202 Return the number of new marker."""
17296
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203 if not _enabled:
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204 raise util.Abort('obsolete feature is not enabled on this repo')
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205 new = [m for m in markers if m not in self._all]
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206 if new:
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diff changeset
207 f = self.sopener('obsstore', 'ab')
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diff changeset
208 try:
17195
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Adrian Buehlmann <adrian@cadifra.com>
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diff changeset
209 # Whether the file's current position is at the begin or at
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210 # the end after opening a file for appending is implementation
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211 # defined. So we must seek to the end before calling tell(),
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212 # or we may get a zero offset for non-zero sized files on
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213 # some platforms (issue3543).
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diff changeset
214 f.seek(0, _SEEK_END)
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215 offset = f.tell()
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diff changeset
216 transaction.add('obsstore', offset)
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diff changeset
217 # offset == 0: new file - add the version header
17220
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diff changeset
218 for bytes in _encodemarkers(new, offset == 0):
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diff changeset
219 f.write(bytes)
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diff changeset
220 finally:
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221 # XXX: f.close() == filecache invalidation == obsstore rebuilt.
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diff changeset
222 # call 'filecacheentry.refresh()' here
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diff changeset
223 f.close()
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diff changeset
224 self._load(new)
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diff changeset
225 # new marker *may* have changed several set. invalidate the cache.
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diff changeset
226 self.caches.clear()
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diff changeset
227 return len(new)
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228
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diff changeset
229 def mergemarkers(self, transation, data):
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diff changeset
230 markers = _readmarkers(data)
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diff changeset
231 self.add(transation, markers)
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232
17220
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diff changeset
233 def _load(self, markers):
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diff changeset
234 for mark in markers:
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235 self._all.append(mark)
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diff changeset
236 pre, sucs = mark[:2]
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diff changeset
237 self.precursors.setdefault(pre, set()).add(mark)
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diff changeset
238 for suc in sucs:
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diff changeset
239 self.successors.setdefault(suc, set()).add(mark)
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240
17219
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diff changeset
241 def _encodemarkers(markers, addheader=False):
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diff changeset
242 # Kept separate from flushmarkers(), it will be reused for
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diff changeset
243 # markers exchange.
17219
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244 if addheader:
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diff changeset
245 yield _pack('>B', _fmversion)
17125
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diff changeset
246 for marker in markers:
17295
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diff changeset
247 yield _encodeonemarker(marker)
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diff changeset
248
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249
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diff changeset
250 def _encodeonemarker(marker):
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diff changeset
251 pre, sucs, flags, metadata = marker
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diff changeset
252 nbsuc = len(sucs)
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diff changeset
253 format = _fmfixed + (_fmnode * nbsuc)
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diff changeset
254 data = [nbsuc, len(metadata), flags, pre]
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diff changeset
255 data.extend(sucs)
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diff changeset
256 return _pack(format, *data) + metadata
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diff changeset
257
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diff changeset
258 # arbitrary picked to fit into 8K limit from HTTP server
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diff changeset
259 # you have to take in account:
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diff changeset
260 # - the version header
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diff changeset
261 # - the base85 encoding
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diff changeset
262 _maxpayload = 5300
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diff changeset
263
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diff changeset
264 def listmarkers(repo):
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diff changeset
265 """List markers over pushkey"""
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diff changeset
266 if not repo.obsstore:
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diff changeset
267 return {}
17295
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diff changeset
268 keys = {}
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diff changeset
269 parts = []
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diff changeset
270 currentlen = _maxpayload * 2 # ensure we create a new part
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diff changeset
271 for marker in repo.obsstore:
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diff changeset
272 nextdata = _encodeonemarker(marker)
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diff changeset
273 if (len(nextdata) + currentlen > _maxpayload):
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diff changeset
274 currentpart = []
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diff changeset
275 currentlen = 0
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diff changeset
276 parts.append(currentpart)
1f08ecc7febb pushkey: splits obsolete marker exchange into multiple keys
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diff changeset
277 currentpart.append(nextdata)
17304
0368fc55d572 obsolete: properly increment currentlen when building pushkey payload
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parents: 17298
diff changeset
278 currentlen += len(nextdata)
17295
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diff changeset
279 for idx, part in enumerate(reversed(parts)):
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17253
diff changeset
280 data = ''.join([_pack('>B', _fmversion)] + part)
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diff changeset
281 keys['dump%i' % idx] = base85.b85encode(data)
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diff changeset
282 return keys
17073
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diff changeset
283
17075
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diff changeset
284 def pushmarker(repo, key, old, new):
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diff changeset
285 """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
286 if not key.startswith('dump'):
17075
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
287 repo.ui.warn(_('unknown key: %r') % key)
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diff changeset
288 return 0
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
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parents: 17073
diff changeset
289 if old:
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
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diff changeset
290 repo.ui.warn(_('unexpected old value') % key)
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Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
291 return 0
28ed1c4511ce obsolete: exchange obsolete marker over pushkey
Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
292 data = base85.b85decode(new)
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Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
293 lock = repo.lock()
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Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
294 try:
17126
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
295 tr = repo.transaction('pushkey: obsolete markers')
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parents: 17125
diff changeset
296 try:
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Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
297 repo.obsstore.mergemarkers(tr, data)
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Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
298 tr.close()
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Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
299 return 1
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Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
300 finally:
8fa8717b47b6 obsolete: write obsolete marker inside a transaction
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 17125
diff changeset
301 tr.release()
17075
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parents: 17073
diff changeset
302 finally:
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Pierre-Yves.David@ens-lyon.org
parents: 17073
diff changeset
303 lock.release()
17073
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
304
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
305 def allmarkers(repo):
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
306 """all obsolete markers known in a repository"""
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
307 for markerdata in repo.obsstore:
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
308 yield marker(repo, markerdata)
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Pierre-Yves.David@ens-lyon.org
parents: 17072
diff changeset
309
17076
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diff changeset
310 def precursormarkers(ctx):
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diff changeset
311 """obsolete marker making this changeset obsolete"""
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diff changeset
312 for data in ctx._repo.obsstore.precursors.get(ctx.node(), ()):
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Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
313 yield marker(ctx._repo, data)
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Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
314
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diff changeset
315 def successormarkers(ctx):
75f4180509a4 obsolete: function and method to access some obsolete data
Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
316 """obsolete marker marking this changeset as a successors"""
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Pierre-Yves.David@ens-lyon.org
parents: 17075
diff changeset
317 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
318 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
319
17213
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
320 def anysuccessors(obsstore, node):
7eb5aa1f83fd obsolete: add an any successors function
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parents: 17200
diff changeset
321 """Yield every successor of <node>
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
322
17425
e95ec38f86b0 fix wording and not-completely-trivial spelling errors and bad docstrings
Mads Kiilerich <mads@kiilerich.com>
parents: 17424
diff changeset
323 This is a linear yield unsuitable to detect split changesets."""
17213
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parents: 17200
diff changeset
324 remaining = set([node])
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
325 seen = set(remaining)
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
326 while remaining:
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
327 current = remaining.pop()
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
328 yield current
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
329 for mark in obsstore.precursors.get(current, ()):
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
330 for suc in mark[1]:
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
331 if suc not in seen:
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
332 seen.add(suc)
7eb5aa1f83fd obsolete: add an any successors function
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17200
diff changeset
333 remaining.add(suc)
17469
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parents: 17429
diff changeset
334
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
335 # mapping of 'set-name' -> <function to computer this set>
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parents: 17429
diff changeset
336 cachefuncs = {}
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parents: 17429
diff changeset
337 def cachefor(name):
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parents: 17429
diff changeset
338 """Decorator to register a function as computing the cache for a set"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
339 def decorator(func):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
340 assert name not in cachefuncs
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
341 cachefuncs[name] = func
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parents: 17429
diff changeset
342 return func
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parents: 17429
diff changeset
343 return decorator
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
344
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parents: 17429
diff changeset
345 def getobscache(repo, name):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
346 """Return the set of revision that belong to the <name> set
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
347
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
348 Such access may compute the set and cache it for future use"""
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parents: 17429
diff changeset
349 if not repo.obsstore:
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
350 return ()
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parents: 17429
diff changeset
351 if name not in repo.obsstore.caches:
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
352 repo.obsstore.caches[name] = cachefuncs[name](repo)
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
353 return repo.obsstore.caches[name]
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
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parents: 17429
diff changeset
354
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parents: 17429
diff changeset
355 # To be simple we need to invalidate obsolescence cache when:
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
356 #
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parents: 17429
diff changeset
357 # - new changeset is added:
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parents: 17429
diff changeset
358 # - public phase is changed
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
359 # - obsolescence marker are added
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parents: 17429
diff changeset
360 # - strip is used a repo
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
361 def clearobscaches(repo):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
362 """Remove all obsolescence related cache from a repo
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
363
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
364 This remove all cache in obsstore is the obsstore already exist on the
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
365 repo.
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
366
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
367 (We could be smarter here given the exact event that trigger the cache
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
368 clearing)"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
369 # only clear cache is there is obsstore data in this repo
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
370 if 'obsstore' in repo._filecache:
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
371 repo.obsstore.caches.clear()
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
372
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
373 @cachefor('obsolete')
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
374 def _computeobsoleteset(repo):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
375 """the set of obsolete revisions"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
376 obs = set()
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
377 nm = repo.changelog.nodemap
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
378 for prec in repo.obsstore.precursors:
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
379 rev = nm.get(prec)
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
380 if rev is not None:
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
381 obs.add(rev)
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
382 return set(repo.revs('%ld - public()', obs))
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
383
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
384 @cachefor('unstable')
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
385 def _computeunstableset(repo):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
386 """the set of non obsolete revisions with obsolete parents"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
387 return set(repo.revs('(obsolete()::) - obsolete()'))
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
388
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
389 @cachefor('suspended')
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
390 def _computesuspendedset(repo):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
391 """the set of obsolete parents with non obsolete descendants"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
392 return set(repo.revs('obsolete() and obsolete()::unstable()'))
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
393
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
394 @cachefor('extinct')
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
395 def _computeextinctset(repo):
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
396 """the set of obsolete parents without non obsolete descendants"""
fb72eec7efd8 obsolete: introduce caches for all meaningful sets
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17429
diff changeset
397 return set(repo.revs('obsolete() - obsolete()::unstable()'))
17474
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
398
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
399 def createmarkers(repo, relations, flag=0, metadata=None):
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
400 """Add obsolete markers between changesets in a repo
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
401
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Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
402 <relations> must be an iterable of (<old>, (<new>, ...)) tuple.
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
403 `old` and `news` are changectx.
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
404
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
405 Trying to obsolete a public changeset will raise an exception.
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
406
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
407 Current user and date are used except if specified otherwise in the
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
408 metadata attribute.
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
409
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
410 This function operates within a transaction of its own, but does
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
411 not take any lock on the repo.
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
412 """
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
413 # prepare metadata
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
414 if metadata is None:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
415 metadata = {}
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
416 if 'date' not in metadata:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
417 metadata['date'] = '%i %i' % util.makedate()
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
418 if 'user' not in metadata:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
419 metadata['user'] = repo.ui.username()
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
420 tr = repo.transaction('add-obsolescence-marker')
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
421 try:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
422 for prec, sucs in relations:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
423 if not prec.mutable():
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
424 raise util.Abort("cannot obsolete immutable changeset: %s"
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
425 % prec)
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
426 nprec = prec.node()
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
427 nsucs = tuple(s.node() for s in sucs)
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
428 if nprec in nsucs:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
429 raise util.Abort("changeset %s cannot obsolete itself" % prec)
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
430 repo.obsstore.create(tr, nprec, nsucs, flag, metadata)
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
431 tr.close()
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
432 finally:
f85816af6294 obsolete: add a high level function to create an obsolete marker
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 17469
diff changeset
433 tr.release()