Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/upgrade_utils/actions.py @ 46053:a2a59cde9b9f

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upgrade: gather code about source checking together They just moved in the same file, now they are grouped together and documented. Differential Revision: https://phab.mercurial-scm.org/D9483
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Dec 2020 15:54:38 +0100
parents f4f956342cf1
children 72b7b4bf3e65
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # upgrade.py - functions for in place upgrade of Mercurial repository
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2 #
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3 # Copyright (c) 2016-present, Gregory Szorc
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 from ..i18n import _
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11 from .. import (
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12 error,
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13 localrepo,
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14 requirements,
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15 util,
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16 )
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17
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18 from ..utils import compression
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19
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20 # list of requirements that request a clone of all revlog if added/removed
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21 RECLONES_REQUIREMENTS = {
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22 b'generaldelta',
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23 requirements.SPARSEREVLOG_REQUIREMENT,
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24 }
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25
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26
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27 def supportremovedrequirements(repo):
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28 """Obtain requirements that can be removed during an upgrade.
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29
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30 If an upgrade were to create a repository that dropped a requirement,
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31 the dropped requirement must appear in the returned set for the upgrade
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32 to be allowed.
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33 """
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34 supported = {
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35 requirements.SPARSEREVLOG_REQUIREMENT,
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36 requirements.SIDEDATA_REQUIREMENT,
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37 requirements.COPIESSDC_REQUIREMENT,
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38 requirements.NODEMAP_REQUIREMENT,
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39 requirements.SHARESAFE_REQUIREMENT,
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40 }
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41 for name in compression.compengines:
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42 engine = compression.compengines[name]
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43 if engine.available() and engine.revlogheader():
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44 supported.add(b'exp-compression-%s' % name)
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45 if engine.name() == b'zstd':
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46 supported.add(b'revlog-compression-zstd')
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47 return supported
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48
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49
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50 def supporteddestrequirements(repo):
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51 """Obtain requirements that upgrade supports in the destination.
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52
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53 If the result of the upgrade would create requirements not in this set,
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54 the upgrade is disallowed.
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55
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56 Extensions should monkeypatch this to add their custom requirements.
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57 """
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58 supported = {
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59 b'dotencode',
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60 b'fncache',
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61 b'generaldelta',
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62 b'revlogv1',
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63 b'store',
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64 requirements.SPARSEREVLOG_REQUIREMENT,
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65 requirements.SIDEDATA_REQUIREMENT,
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66 requirements.COPIESSDC_REQUIREMENT,
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67 requirements.NODEMAP_REQUIREMENT,
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68 requirements.SHARESAFE_REQUIREMENT,
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69 }
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70 for name in compression.compengines:
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71 engine = compression.compengines[name]
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72 if engine.available() and engine.revlogheader():
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73 supported.add(b'exp-compression-%s' % name)
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74 if engine.name() == b'zstd':
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75 supported.add(b'revlog-compression-zstd')
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76 return supported
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77
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78
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79 def allowednewrequirements(repo):
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80 """Obtain requirements that can be added to a repository during upgrade.
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81
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82 This is used to disallow proposed requirements from being added when
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83 they weren't present before.
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84
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85 We use a list of allowed requirement additions instead of a list of known
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86 bad additions because the whitelist approach is safer and will prevent
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87 future, unknown requirements from accidentally being added.
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88 """
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89 supported = {
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90 b'dotencode',
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91 b'fncache',
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92 b'generaldelta',
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93 requirements.SPARSEREVLOG_REQUIREMENT,
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94 requirements.SIDEDATA_REQUIREMENT,
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95 requirements.COPIESSDC_REQUIREMENT,
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96 requirements.NODEMAP_REQUIREMENT,
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97 requirements.SHARESAFE_REQUIREMENT,
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98 }
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99 for name in compression.compengines:
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100 engine = compression.compengines[name]
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101 if engine.available() and engine.revlogheader():
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102 supported.add(b'exp-compression-%s' % name)
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103 if engine.name() == b'zstd':
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104 supported.add(b'revlog-compression-zstd')
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105 return supported
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106
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107
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108 def preservedrequirements(repo):
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109 return set()
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110
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111
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112 DEFICIENCY = b'deficiency'
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113 OPTIMISATION = b'optimization'
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114
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115
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116 class improvement(object):
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117 """Represents an improvement that can be made as part of an upgrade.
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118
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119 The following attributes are defined on each instance:
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120
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121 name
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122 Machine-readable string uniquely identifying this improvement. It
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123 will be mapped to an action later in the upgrade process.
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124
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125 type
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126 Either ``DEFICIENCY`` or ``OPTIMISATION``. A deficiency is an obvious
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127 problem. An optimization is an action (sometimes optional) that
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128 can be taken to further improve the state of the repository.
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129
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130 description
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131 Message intended for humans explaining the improvement in more detail,
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132 including the implications of it. For ``DEFICIENCY`` types, should be
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133 worded in the present tense. For ``OPTIMISATION`` types, should be
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134 worded in the future tense.
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135
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136 upgrademessage
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137 Message intended for humans explaining what an upgrade addressing this
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138 issue will do. Should be worded in the future tense.
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139 """
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140
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141 def __init__(self, name, type, description, upgrademessage):
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142 self.name = name
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143 self.type = type
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144 self.description = description
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145 self.upgrademessage = upgrademessage
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146
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147 def __eq__(self, other):
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148 if not isinstance(other, improvement):
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149 # This is what python tell use to do
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150 return NotImplemented
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151 return self.name == other.name
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152
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153 def __ne__(self, other):
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154 return not (self == other)
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155
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156 def __hash__(self):
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157 return hash(self.name)
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158
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159
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160 allformatvariant = []
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161
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162
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163 def registerformatvariant(cls):
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164 allformatvariant.append(cls)
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165 return cls
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166
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167
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168 class formatvariant(improvement):
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169 """an improvement subclass dedicated to repository format"""
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170
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171 type = DEFICIENCY
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172 ### The following attributes should be defined for each class:
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173
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174 # machine-readable string uniquely identifying this improvement. it will be
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175 # mapped to an action later in the upgrade process.
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176 name = None
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177
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178 # message intended for humans explaining the improvement in more detail,
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179 # including the implications of it ``DEFICIENCY`` types, should be worded
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180 # in the present tense.
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181 description = None
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182
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183 # message intended for humans explaining what an upgrade addressing this
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184 # issue will do. should be worded in the future tense.
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185 upgrademessage = None
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186
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187 # value of current Mercurial default for new repository
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188 default = None
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189
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190 def __init__(self):
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191 raise NotImplementedError()
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192
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193 @staticmethod
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194 def fromrepo(repo):
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195 """current value of the variant in the repository"""
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196 raise NotImplementedError()
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197
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198 @staticmethod
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199 def fromconfig(repo):
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200 """current value of the variant in the configuration"""
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201 raise NotImplementedError()
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202
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203
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204 class requirementformatvariant(formatvariant):
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205 """formatvariant based on a 'requirement' name.
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206
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207 Many format variant are controlled by a 'requirement'. We define a small
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208 subclass to factor the code.
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209 """
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210
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211 # the requirement that control this format variant
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212 _requirement = None
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213
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214 @staticmethod
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215 def _newreporequirements(ui):
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216 return localrepo.newreporequirements(
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217 ui, localrepo.defaultcreateopts(ui)
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218 )
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219
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220 @classmethod
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221 def fromrepo(cls, repo):
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222 assert cls._requirement is not None
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223 return cls._requirement in repo.requirements
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224
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225 @classmethod
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226 def fromconfig(cls, repo):
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227 assert cls._requirement is not None
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228 return cls._requirement in cls._newreporequirements(repo.ui)
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229
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230
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231 @registerformatvariant
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232 class fncache(requirementformatvariant):
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233 name = b'fncache'
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234
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235 _requirement = b'fncache'
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236
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237 default = True
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238
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239 description = _(
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240 b'long and reserved filenames may not work correctly; '
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241 b'repository performance is sub-optimal'
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242 )
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243
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244 upgrademessage = _(
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245 b'repository will be more resilient to storing '
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246 b'certain paths and performance of certain '
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247 b'operations should be improved'
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248 )
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249
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250
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251 @registerformatvariant
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252 class dotencode(requirementformatvariant):
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253 name = b'dotencode'
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254
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255 _requirement = b'dotencode'
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256
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257 default = True
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258
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259 description = _(
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260 b'storage of filenames beginning with a period or '
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diff changeset
261 b'space may not work correctly'
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262 )
32031
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263
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264 upgrademessage = _(
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265 b'repository will be better able to store files '
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266 b'beginning with a space or period'
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267 )
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diff changeset
268
32031
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diff changeset
269
32032
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270 @registerformatvariant
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271 class generaldelta(requirementformatvariant):
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272 name = b'generaldelta'
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273
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274 _requirement = b'generaldelta'
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275
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276 default = True
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277
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278 description = _(
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279 b'deltas within internal storage are unable to '
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280 b'choose optimal revisions; repository is larger and '
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281 b'slower than it could be; interaction with other '
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282 b'repositories may require extra network and CPU '
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283 b'resources, making "hg push" and "hg pull" slower'
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284 )
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285
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286 upgrademessage = _(
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287 b'repository storage will be able to create '
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288 b'optimal deltas; new repository data will be '
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diff changeset
289 b'smaller and read times should decrease; '
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290 b'interacting with other repositories using this '
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291 b'storage model should require less network and '
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292 b'CPU resources, making "hg push" and "hg pull" '
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293 b'faster'
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294 )
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diff changeset
295
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diff changeset
296
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297 @registerformatvariant
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parents: 46050
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298 class sharesafe(requirementformatvariant):
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299 name = b'exp-sharesafe'
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300 _requirement = requirements.SHARESAFE_REQUIREMENT
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301
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302 default = False
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303
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304 description = _(
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305 b'old shared repositories do not share source repository '
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diff changeset
306 b'requirements and config. This leads to various problems '
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parents: 46012
diff changeset
307 b'when the source repository format is upgraded or some new '
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diff changeset
308 b'extensions are enabled.'
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diff changeset
309 )
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diff changeset
310
705c37f22859 upgrade: add support for experimental safe share mode
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diff changeset
311 upgrademessage = _(
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diff changeset
312 b'Upgrades a repository to share-safe format so that future '
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parents: 46012
diff changeset
313 b'shares of this repository share its requirements and configs.'
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parents: 46012
diff changeset
314 )
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parents: 46012
diff changeset
315
705c37f22859 upgrade: add support for experimental safe share mode
Pulkit Goyal <7895pulkit@gmail.com>
parents: 46012
diff changeset
316
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diff changeset
317 @registerformatvariant
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318 class sparserevlog(requirementformatvariant):
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319 name = b'sparserevlog'
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diff changeset
320
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diff changeset
321 _requirement = requirements.SPARSEREVLOG_REQUIREMENT
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322
40936
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Boris Feld <boris.feld@octobus.net>
parents: 40855
diff changeset
323 default = True
38719
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diff changeset
324
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325 description = _(
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326 b'in order to limit disk reading and memory usage on older '
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diff changeset
327 b'version, the span of a delta chain from its root to its '
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328 b'end is limited, whatever the relevant data in this span. '
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329 b'This can severly limit Mercurial ability to build good '
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330 b'chain of delta resulting is much more storage space being '
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331 b'taken and limit reusability of on disk delta during '
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diff changeset
332 b'exchange.'
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333 )
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diff changeset
334
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335 upgrademessage = _(
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336 b'Revlog supports delta chain with more unused data '
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337 b'between payload. These gaps will be skipped at read '
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338 b'time. This allows for better delta chains, making a '
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diff changeset
339 b'better compression and faster exchange with server.'
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340 )
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341
38719
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parents: 38405
diff changeset
342
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parents: 38405
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343 @registerformatvariant
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344 class sidedata(requirementformatvariant):
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345 name = b'sidedata'
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diff changeset
346
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347 _requirement = requirements.SIDEDATA_REQUIREMENT
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348
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349 default = False
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350
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351 description = _(
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352 b'Allows storage of extra data alongside a revision, '
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diff changeset
353 b'unlocking various caching options.'
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diff changeset
354 )
43031
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diff changeset
355
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356 upgrademessage = _(b'Allows storage of extra data alongside a revision.')
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diff changeset
357
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diff changeset
358
43031
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diff changeset
359 @registerformatvariant
44876
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parents: 44875
diff changeset
360 class persistentnodemap(requirementformatvariant):
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361 name = b'persistent-nodemap'
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diff changeset
362
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parents: 45392
diff changeset
363 _requirement = requirements.NODEMAP_REQUIREMENT
44876
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parents: 44875
diff changeset
364
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parents: 44875
diff changeset
365 default = False
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diff changeset
366
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parents: 44875
diff changeset
367 description = _(
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parents: 44875
diff changeset
368 b'persist the node -> rev mapping on disk to speedup lookup'
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parents: 44875
diff changeset
369 )
ea9563e9e65a nodemap: teach `hg debugformat` about the persistent nodemap option
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 44875
diff changeset
370
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parents: 44875
diff changeset
371 upgrademessage = _(b'Speedup revision lookup by node id.')
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parents: 44875
diff changeset
372
ea9563e9e65a nodemap: teach `hg debugformat` about the persistent nodemap option
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parents: 44875
diff changeset
373
ea9563e9e65a nodemap: teach `hg debugformat` about the persistent nodemap option
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 44875
diff changeset
374 @registerformatvariant
43138
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
375 class copiessdc(requirementformatvariant):
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
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parents: 43135
diff changeset
376 name = b'copies-sdc'
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parents: 43135
diff changeset
377
45393
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parents: 45392
diff changeset
378 _requirement = requirements.COPIESSDC_REQUIREMENT
43138
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
379
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
380 default = False
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
381
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
382 description = _(b'Stores copies information alongside changesets.')
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
383
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
384 upgrademessage = _(
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
385 b'Allows to use more efficient algorithm to deal with ' b'copy tracing.'
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
386 )
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
387
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
388
f9dc98a97cdb sidedatacopies: teach upgrade about the new requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43135
diff changeset
389 @registerformatvariant
32031
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
390 class removecldeltachain(formatvariant):
43077
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parents: 43076
diff changeset
391 name = b'plain-cl-delta'
32031
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parents: 32030
diff changeset
392
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
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parents: 32030
diff changeset
393 default = True
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
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parents: 32030
diff changeset
394
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diff changeset
395 description = _(
43077
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parents: 43076
diff changeset
396 b'changelog storage is using deltas instead of '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
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parents: 43076
diff changeset
397 b'raw entries; changelog reading and any '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
398 b'operation relying on changelog data are slower '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
399 b'than they could be'
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
400 )
32031
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
401
43076
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parents: 43031
diff changeset
402 upgrademessage = _(
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
403 b'changelog storage will be reformated to '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
404 b'store raw entries; changelog reading will be '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
405 b'faster; changelog size may be reduced'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
406 )
32031
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
407
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
408 @staticmethod
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
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parents: 32030
diff changeset
409 def fromrepo(repo):
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
410 # Mercurial 4.0 changed changelogs to not use delta chains. Search for
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
411 # changelogs with deltas.
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
412 cl = repo.changelog
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
413 chainbase = cl.chainbase
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
414 return all(rev == chainbase(rev) for rev in cl)
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
415
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32030
diff changeset
416 @staticmethod
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
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parents: 32030
diff changeset
417 def fromconfig(repo):
11a2461fc9b1 upgrade: move descriptions and selection logic in individual classes
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parents: 32030
diff changeset
418 return True
32030
e47223576b8d upgrade: introduce a 'formatvariant' class
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32029
diff changeset
419
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
420
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
421 @registerformatvariant
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
422 class compressionengine(formatvariant):
43077
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parents: 43076
diff changeset
423 name = b'compression'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
424 default = b'zlib'
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
425
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
426 description = _(
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
427 b'Compresion algorithm used to compress data. '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
428 b'Some engine are faster than other'
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
429 )
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
430
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
431 upgrademessage = _(
43117
8ff1ecfadcd1 cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents: 43089
diff changeset
432 b'revlog content will be recompressed with the new algorithm.'
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
433 )
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
434
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
435 @classmethod
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
436 def fromrepo(cls, repo):
42136
10a6725dca6e compression: introduce an official `zstd-revlog` requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
437 # we allow multiple compression engine requirement to co-exist because
10a6725dca6e compression: introduce an official `zstd-revlog` requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
438 # strickly speaking, revlog seems to support mixed compression style.
10a6725dca6e compression: introduce an official `zstd-revlog` requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
439 #
10a6725dca6e compression: introduce an official `zstd-revlog` requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
440 # The compression used for new entries will be "the last one"
43077
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parents: 43076
diff changeset
441 compression = b'zlib'
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
442 for req in repo.requirements:
42136
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
443 prefix = req.startswith
43077
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parents: 43076
diff changeset
444 if prefix(b'revlog-compression-') or prefix(b'exp-compression-'):
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
445 compression = req.split(b'-', 2)[2]
42136
10a6725dca6e compression: introduce an official `zstd-revlog` requirement
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42046
diff changeset
446 return compression
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
447
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
448 @classmethod
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
449 def fromconfig(cls, repo):
44413
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
450 compengines = repo.ui.configlist(b'format', b'revlog-compression')
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
451 # return the first valid value as the selection code would do
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
452 for comp in compengines:
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
453 if comp in util.compengines:
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
454 return comp
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
455
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
456 # no valide compression found lets display it all for clarity
f0027a3dd7cb revlog-compression: update the config to be a list
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43823
diff changeset
457 return b','.join(compengines)
35349
ead01b74be04 upgrade: register compression as a format variants
Boris Feld <boris.feld@octobus.net>
parents: 35344
diff changeset
458
43076
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Augie Fackler <augie@google.com>
parents: 43031
diff changeset
459
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
460 @registerformatvariant
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
461 class compressionlevel(formatvariant):
43077
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diff changeset
462 name = b'compression-level'
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
463 default = b'default'
42045
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
464
43077
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parents: 43076
diff changeset
465 description = _(b'compression level')
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
466
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
467 upgrademessage = _(b'revlog content will be recompressed')
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
468
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
469 @classmethod
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
470 def fromrepo(cls, repo):
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
471 comp = compressionengine.fromrepo(repo)
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
472 level = None
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
473 if comp == b'zlib':
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
474 level = repo.ui.configint(b'storage', b'revlog.zlib.level')
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
475 elif comp == b'zstd':
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
476 level = repo.ui.configint(b'storage', b'revlog.zstd.level')
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
477 if level is None:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
478 return b'default'
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
479 return bytes(level)
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
480
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
481 @classmethod
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
482 def fromconfig(cls, repo):
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
483 comp = compressionengine.fromconfig(repo)
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
484 level = None
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
485 if comp == b'zlib':
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
486 level = repo.ui.configint(b'storage', b'revlog.zlib.level')
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
487 elif comp == b'zstd':
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
488 level = repo.ui.configint(b'storage', b'revlog.zstd.level')
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
489 if level is None:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
490 return b'default'
42045
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
491 return bytes(level)
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
492
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
493
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
494 def finddeficiencies(repo):
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
495 """returns a list of deficiencies that the repo suffer from"""
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
496 deficiencies = []
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
497
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
498 # We could detect lack of revlogv1 and store here, but they were added
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
499 # in 0.9.2 and we don't support upgrading repos without these
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
500 # requirements, so let's not bother.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
501
32032
189778a06743 upgrade: register all format variants in a list
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32031
diff changeset
502 for fv in allformatvariant:
189778a06743 upgrade: register all format variants in a list
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32031
diff changeset
503 if not fv.fromrepo(repo):
189778a06743 upgrade: register all format variants in a list
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32031
diff changeset
504 deficiencies.append(fv)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
505
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
506 return deficiencies
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
507
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
508
46010
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
509 ALL_OPTIMISATIONS = []
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
510
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
511
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
512 def register_optimization(obj):
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
513 ALL_OPTIMISATIONS.append(obj)
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
514 return obj
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
515
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
516
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
517 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
518 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
519 name=b're-delta-parent',
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
520 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
521 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
522 b'deltas within internal storage will be recalculated to '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
523 b'choose an optimal base revision where this was not '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
524 b'already done; the size of the repository may shrink and '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
525 b'various operations may become faster; the first time '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
526 b'this optimization is performed could slow down upgrade '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
527 b'execution considerably; subsequent invocations should '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
528 b'not run noticeably slower'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
529 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
530 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
531 b'deltas within internal storage will choose a new '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
532 b'base revision if needed'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
533 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
534 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
535 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
536
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
537 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
538 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
539 name=b're-delta-multibase',
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
540 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
541 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
542 b'deltas within internal storage will be recalculated '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
543 b'against multiple base revision and the smallest '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
544 b'difference will be used; the size of the repository may '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
545 b'shrink significantly when there are many merges; this '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
546 b'optimization will slow down execution in proportion to '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
547 b'the number of merges in the repository and the amount '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
548 b'of files in the repository; this slow down should not '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
549 b'be significant unless there are tens of thousands of '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
550 b'files and thousands of merges'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
551 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
552 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
553 b'deltas within internal storage will choose an '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
554 b'optimal delta by computing deltas against multiple '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
555 b'parents; may slow down execution time '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
556 b'significantly'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
557 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
558 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
559 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
560
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
561 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
562 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
563 name=b're-delta-all',
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
564 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
565 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
566 b'deltas within internal storage will always be '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
567 b'recalculated without reusing prior deltas; this will '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
568 b'likely make execution run several times slower; this '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
569 b'optimization is typically not needed'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
570 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
571 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
572 b'deltas within internal storage will be fully '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
573 b'recomputed; this will likely drastically slow down '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
574 b'execution time'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
575 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
576 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
577 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
578
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
579 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
580 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
581 name=b're-delta-fulladd',
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
582 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
583 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
584 b'every revision will be re-added as if it was new '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
585 b'content. It will go through the full storage '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
586 b'mechanism giving extensions a chance to process it '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
587 b'(eg. lfs). This is similar to "re-delta-all" but even '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
588 b'slower since more logic is involved.'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
589 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
590 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
591 b'each revision will be added as new content to the '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
592 b'internal storage; this will likely drastically slow '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
593 b'down execution time, but some extensions might need '
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
594 b'it'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
595 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
596 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
597 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
598
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
599
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
600 def findoptimizations(repo):
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
601 """Determine optimisation that could be used during upgrade"""
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
602 # These are unconditionally added. There is logic later that figures out
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
603 # which ones to apply.
46010
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
604 return list(ALL_OPTIMISATIONS)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
605
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
606
31900
0f0d7005b9ad upgrade: simplify 'determineactions'
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31899
diff changeset
607 def determineactions(repo, deficiencies, sourcereqs, destreqs):
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
608 """Determine upgrade actions that will be performed.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
609
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
610 Given a list of improvements as returned by ``finddeficiencies`` and
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
611 ``findoptimizations``, determine the list of upgrade actions that
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
612 will be performed.
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
613
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
614 The role of this function is to filter improvements if needed, apply
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
615 recommended optimizations from the improvements list that make sense,
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
616 etc.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
617
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
618 Returns a list of action names.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
619 """
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
620 newactions = []
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
621
31900
0f0d7005b9ad upgrade: simplify 'determineactions'
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31899
diff changeset
622 for d in deficiencies:
44741
c36a3fcfc36b upgrade: properly filter action depending on planned work
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 44470
diff changeset
623 name = d._requirement
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
624
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
625 # If the action is a requirement that doesn't show up in the
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
626 # destination requirements, prune the action.
44741
c36a3fcfc36b upgrade: properly filter action depending on planned work
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 44470
diff changeset
627 if name is not None and name not in destreqs:
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
628 continue
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
629
31903
fa1088de2119 upgrade: use 'improvement' object for action too
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31902
diff changeset
630 newactions.append(d)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
631
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
632 # FUTURE consider adding some optimizations here for certain transitions.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
633 # e.g. adding generaldelta could schedule parent redeltas.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
634
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
635 return newactions
46052
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
636
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
637
46053
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
638 ### Code checking if a repository can got through the upgrade process at all. #
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
639
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
640
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
641 def requiredsourcerequirements(repo):
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
642 """Obtain requirements required to be present to upgrade a repo.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
643
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
644 An upgrade will not be allowed if the repository doesn't have the
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
645 requirements returned by this function.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
646 """
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
647 return {
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
648 # Introduced in Mercurial 0.9.2.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
649 b'revlogv1',
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
650 # Introduced in Mercurial 0.9.2.
a2a59cde9b9f upgrade: gather code about source checking together
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651 b'store',
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652 }
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653
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654
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655 def blocksourcerequirements(repo):
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656 """Obtain requirements that will prevent an upgrade from occurring.
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657
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658 An upgrade cannot be performed if the source repository contains a
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659 requirements in the returned set.
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660 """
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661 return {
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662 # The upgrade code does not yet support these experimental features.
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663 # This is an artificial limitation.
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664 requirements.TREEMANIFEST_REQUIREMENT,
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665 # This was a precursor to generaldelta and was never enabled by default.
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666 # It should (hopefully) not exist in the wild.
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667 b'parentdelta',
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668 # Upgrade should operate on the actual store, not the shared link.
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669 requirements.SHARED_REQUIREMENT,
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670 }
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671
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672
46052
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673 def check_source_requirements(repo):
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674 """Ensure that no existing requirements prevent the repository upgrade"""
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675
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676 required = requiredsourcerequirements(repo)
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677 missingreqs = required - repo.requirements
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678 if missingreqs:
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679 msg = _(b'cannot upgrade repository; requirement missing: %s')
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680 missingreqs = b', '.join(sorted(missingreqs))
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681 raise error.Abort(msg % missingreqs)
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682
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683 blocking = blocksourcerequirements(repo)
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684 blockingreqs = blocking & repo.requirements
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685 if blockingreqs:
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686 m = _(b'cannot upgrade repository; unsupported source requirement: %s')
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687 blockingreqs = b', '.join(sorted(blockingreqs))
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688 raise error.Abort(m % blockingreqs)