Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/upgrade_utils/actions.py @ 46056:08802795ae90

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upgrade: gather code about requirement checking together They just moved in the same file, now they are grouped together and documented. Differential Revision: https://phab.mercurial-scm.org/D9486
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Dec 2020 20:35:19 +0100
parents 72b7b4bf3e65
children c407513a44a3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 preservedrequirements(repo):
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28 return set()
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29
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30
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31 DEFICIENCY = b'deficiency'
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32 OPTIMISATION = b'optimization'
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33
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34
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35 class improvement(object):
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36 """Represents an improvement that can be made as part of an upgrade.
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37
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38 The following attributes are defined on each instance:
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39
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40 name
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41 Machine-readable string uniquely identifying this improvement. It
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42 will be mapped to an action later in the upgrade process.
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43
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44 type
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45 Either ``DEFICIENCY`` or ``OPTIMISATION``. A deficiency is an obvious
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46 problem. An optimization is an action (sometimes optional) that
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47 can be taken to further improve the state of the repository.
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48
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49 description
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50 Message intended for humans explaining the improvement in more detail,
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51 including the implications of it. For ``DEFICIENCY`` types, should be
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52 worded in the present tense. For ``OPTIMISATION`` types, should be
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53 worded in the future tense.
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54
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55 upgrademessage
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56 Message intended for humans explaining what an upgrade addressing this
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57 issue will do. Should be worded in the future tense.
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58 """
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59
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60 def __init__(self, name, type, description, upgrademessage):
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61 self.name = name
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62 self.type = type
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63 self.description = description
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64 self.upgrademessage = upgrademessage
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65
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66 def __eq__(self, other):
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67 if not isinstance(other, improvement):
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68 # This is what python tell use to do
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69 return NotImplemented
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70 return self.name == other.name
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71
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72 def __ne__(self, other):
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73 return not (self == other)
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74
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75 def __hash__(self):
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76 return hash(self.name)
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78
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79 allformatvariant = []
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80
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81
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82 def registerformatvariant(cls):
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83 allformatvariant.append(cls)
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84 return cls
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85
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86
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87 class formatvariant(improvement):
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88 """an improvement subclass dedicated to repository format"""
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89
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90 type = DEFICIENCY
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91 ### The following attributes should be defined for each class:
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92
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93 # machine-readable string uniquely identifying this improvement. it will be
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94 # mapped to an action later in the upgrade process.
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95 name = None
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96
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97 # message intended for humans explaining the improvement in more detail,
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98 # including the implications of it ``DEFICIENCY`` types, should be worded
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99 # in the present tense.
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100 description = None
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101
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102 # message intended for humans explaining what an upgrade addressing this
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103 # issue will do. should be worded in the future tense.
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104 upgrademessage = None
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105
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106 # value of current Mercurial default for new repository
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107 default = None
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108
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109 def __init__(self):
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110 raise NotImplementedError()
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111
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112 @staticmethod
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113 def fromrepo(repo):
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114 """current value of the variant in the repository"""
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115 raise NotImplementedError()
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116
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117 @staticmethod
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118 def fromconfig(repo):
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119 """current value of the variant in the configuration"""
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120 raise NotImplementedError()
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121
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122
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123 class requirementformatvariant(formatvariant):
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124 """formatvariant based on a 'requirement' name.
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125
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126 Many format variant are controlled by a 'requirement'. We define a small
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127 subclass to factor the code.
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128 """
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129
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130 # the requirement that control this format variant
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131 _requirement = None
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132
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133 @staticmethod
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134 def _newreporequirements(ui):
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135 return localrepo.newreporequirements(
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136 ui, localrepo.defaultcreateopts(ui)
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137 )
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138
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139 @classmethod
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140 def fromrepo(cls, repo):
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141 assert cls._requirement is not None
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142 return cls._requirement in repo.requirements
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143
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144 @classmethod
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145 def fromconfig(cls, repo):
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146 assert cls._requirement is not None
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147 return cls._requirement in cls._newreporequirements(repo.ui)
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148
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149
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150 @registerformatvariant
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151 class fncache(requirementformatvariant):
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152 name = b'fncache'
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153
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154 _requirement = b'fncache'
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155
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156 default = True
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157
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158 description = _(
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159 b'long and reserved filenames may not work correctly; '
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160 b'repository performance is sub-optimal'
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161 )
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162
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163 upgrademessage = _(
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164 b'repository will be more resilient to storing '
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165 b'certain paths and performance of certain '
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166 b'operations should be improved'
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167 )
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168
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169
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170 @registerformatvariant
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171 class dotencode(requirementformatvariant):
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172 name = b'dotencode'
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173
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174 _requirement = b'dotencode'
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175
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176 default = True
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177
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178 description = _(
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179 b'storage of filenames beginning with a period or '
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180 b'space may not work correctly'
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181 )
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182
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183 upgrademessage = _(
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184 b'repository will be better able to store files '
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185 b'beginning with a space or period'
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186 )
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187
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188
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189 @registerformatvariant
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190 class generaldelta(requirementformatvariant):
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191 name = b'generaldelta'
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192
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193 _requirement = b'generaldelta'
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194
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195 default = True
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196
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197 description = _(
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198 b'deltas within internal storage are unable to '
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199 b'choose optimal revisions; repository is larger and '
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200 b'slower than it could be; interaction with other '
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201 b'repositories may require extra network and CPU '
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202 b'resources, making "hg push" and "hg pull" slower'
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203 )
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204
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205 upgrademessage = _(
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206 b'repository storage will be able to create '
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207 b'optimal deltas; new repository data will be '
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208 b'smaller and read times should decrease; '
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209 b'interacting with other repositories using this '
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210 b'storage model should require less network and '
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211 b'CPU resources, making "hg push" and "hg pull" '
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212 b'faster'
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213 )
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214
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215
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216 @registerformatvariant
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217 class sharesafe(requirementformatvariant):
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218 name = b'exp-sharesafe'
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219 _requirement = requirements.SHARESAFE_REQUIREMENT
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220
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221 default = False
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222
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223 description = _(
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224 b'old shared repositories do not share source repository '
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225 b'requirements and config. This leads to various problems '
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226 b'when the source repository format is upgraded or some new '
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227 b'extensions are enabled.'
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228 )
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229
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230 upgrademessage = _(
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231 b'Upgrades a repository to share-safe format so that future '
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232 b'shares of this repository share its requirements and configs.'
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233 )
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234
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235
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236 @registerformatvariant
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237 class sparserevlog(requirementformatvariant):
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238 name = b'sparserevlog'
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239
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240 _requirement = requirements.SPARSEREVLOG_REQUIREMENT
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241
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242 default = True
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243
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244 description = _(
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245 b'in order to limit disk reading and memory usage on older '
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246 b'version, the span of a delta chain from its root to its '
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247 b'end is limited, whatever the relevant data in this span. '
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248 b'This can severly limit Mercurial ability to build good '
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249 b'chain of delta resulting is much more storage space being '
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250 b'taken and limit reusability of on disk delta during '
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251 b'exchange.'
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252 )
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253
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254 upgrademessage = _(
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255 b'Revlog supports delta chain with more unused data '
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256 b'between payload. These gaps will be skipped at read '
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257 b'time. This allows for better delta chains, making a '
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258 b'better compression and faster exchange with server.'
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259 )
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260
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261
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262 @registerformatvariant
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263 class sidedata(requirementformatvariant):
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264 name = b'sidedata'
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265
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266 _requirement = requirements.SIDEDATA_REQUIREMENT
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267
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268 default = False
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269
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270 description = _(
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271 b'Allows storage of extra data alongside a revision, '
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272 b'unlocking various caching options.'
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273 )
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274
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275 upgrademessage = _(b'Allows storage of extra data alongside a revision.')
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276
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277
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278 @registerformatvariant
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279 class persistentnodemap(requirementformatvariant):
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280 name = b'persistent-nodemap'
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281
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282 _requirement = requirements.NODEMAP_REQUIREMENT
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283
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284 default = False
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285
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286 description = _(
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287 b'persist the node -> rev mapping on disk to speedup lookup'
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288 )
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289
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290 upgrademessage = _(b'Speedup revision lookup by node id.')
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291
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292
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293 @registerformatvariant
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294 class copiessdc(requirementformatvariant):
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295 name = b'copies-sdc'
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296
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297 _requirement = requirements.COPIESSDC_REQUIREMENT
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298
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299 default = False
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300
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301 description = _(b'Stores copies information alongside changesets.')
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302
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303 upgrademessage = _(
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304 b'Allows to use more efficient algorithm to deal with ' b'copy tracing.'
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305 )
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306
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307
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308 @registerformatvariant
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309 class removecldeltachain(formatvariant):
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310 name = b'plain-cl-delta'
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311
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312 default = True
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313
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314 description = _(
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315 b'changelog storage is using deltas instead of '
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316 b'raw entries; changelog reading and any '
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317 b'operation relying on changelog data are slower '
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318 b'than they could be'
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319 )
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320
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321 upgrademessage = _(
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322 b'changelog storage will be reformated to '
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323 b'store raw entries; changelog reading will be '
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324 b'faster; changelog size may be reduced'
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325 )
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326
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327 @staticmethod
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328 def fromrepo(repo):
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329 # Mercurial 4.0 changed changelogs to not use delta chains. Search for
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330 # changelogs with deltas.
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331 cl = repo.changelog
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332 chainbase = cl.chainbase
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333 return all(rev == chainbase(rev) for rev in cl)
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334
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335 @staticmethod
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336 def fromconfig(repo):
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337 return True
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diff changeset
338
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339
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340 @registerformatvariant
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341 class compressionengine(formatvariant):
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342 name = b'compression'
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343 default = b'zlib'
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344
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345 description = _(
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346 b'Compresion algorithm used to compress data. '
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347 b'Some engine are faster than other'
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348 )
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349
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350 upgrademessage = _(
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351 b'revlog content will be recompressed with the new algorithm.'
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352 )
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353
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354 @classmethod
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355 def fromrepo(cls, repo):
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356 # we allow multiple compression engine requirement to co-exist because
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357 # strickly speaking, revlog seems to support mixed compression style.
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358 #
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359 # The compression used for new entries will be "the last one"
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360 compression = b'zlib'
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361 for req in repo.requirements:
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362 prefix = req.startswith
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363 if prefix(b'revlog-compression-') or prefix(b'exp-compression-'):
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364 compression = req.split(b'-', 2)[2]
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365 return compression
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366
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367 @classmethod
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368 def fromconfig(cls, repo):
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369 compengines = repo.ui.configlist(b'format', b'revlog-compression')
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370 # return the first valid value as the selection code would do
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371 for comp in compengines:
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diff changeset
372 if comp in util.compengines:
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373 return comp
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diff changeset
374
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diff changeset
375 # no valide compression found lets display it all for clarity
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376 return b','.join(compengines)
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377
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378
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379 @registerformatvariant
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380 class compressionlevel(formatvariant):
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381 name = b'compression-level'
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382 default = b'default'
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diff changeset
383
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384 description = _(b'compression level')
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diff changeset
385
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386 upgrademessage = _(b'revlog content will be recompressed')
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diff changeset
387
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diff changeset
388 @classmethod
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389 def fromrepo(cls, repo):
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390 comp = compressionengine.fromrepo(repo)
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391 level = None
43077
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parents: 43076
diff changeset
392 if comp == b'zlib':
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parents: 43076
diff changeset
393 level = repo.ui.configint(b'storage', b'revlog.zlib.level')
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
394 elif comp == b'zstd':
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parents: 43076
diff changeset
395 level = repo.ui.configint(b'storage', b'revlog.zstd.level')
42045
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parents: 41092
diff changeset
396 if level is None:
43077
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diff changeset
397 return b'default'
42045
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parents: 41092
diff changeset
398 return bytes(level)
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parents: 41092
diff changeset
399
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
400 @classmethod
d7e751ec679e compression: display compression level in debugformat
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parents: 41092
diff changeset
401 def fromconfig(cls, repo):
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parents: 41092
diff changeset
402 comp = compressionengine.fromconfig(repo)
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parents: 41092
diff changeset
403 level = None
43077
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parents: 43076
diff changeset
404 if comp == b'zlib':
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
405 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
406 elif comp == b'zstd':
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
407 level = repo.ui.configint(b'storage', b'revlog.zstd.level')
42045
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parents: 41092
diff changeset
408 if level is None:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
409 return b'default'
42045
d7e751ec679e compression: display compression level in debugformat
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parents: 41092
diff changeset
410 return bytes(level)
d7e751ec679e compression: display compression level in debugformat
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41092
diff changeset
411
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
412
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
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parents: 31895
diff changeset
413 def finddeficiencies(repo):
127b41e975fd upgrade: split finding deficiencies from finding optimisations
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parents: 31895
diff changeset
414 """returns a list of deficiencies that the repo suffer from"""
127b41e975fd upgrade: split finding deficiencies from finding optimisations
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parents: 31895
diff changeset
415 deficiencies = []
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
416
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
417 # 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
418 # 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
419 # requirements, so let's not bother.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
420
32032
189778a06743 upgrade: register all format variants in a list
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 32031
diff changeset
421 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
422 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
423 deficiencies.append(fv)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
424
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
425 return deficiencies
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
426
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
427
46010
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
428 ALL_OPTIMISATIONS = []
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
429
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
430
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
431 def register_optimization(obj):
32dcd783a985 upgrade: move optimisation to something more declarative
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parents: 46009
diff changeset
432 ALL_OPTIMISATIONS.append(obj)
32dcd783a985 upgrade: move optimisation to something more declarative
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parents: 46009
diff changeset
433 return obj
32dcd783a985 upgrade: move optimisation to something more declarative
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parents: 46009
diff changeset
434
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
435
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
436 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
437 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
438 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
439 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
440 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
441 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
442 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
443 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
444 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
445 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
446 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
447 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
448 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
449 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
450 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
451 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
452 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
453 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
454 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
455
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
456 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
457 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
458 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
459 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
460 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
461 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
462 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
463 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
464 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
465 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
466 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
467 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
468 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
469 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
470 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
471 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
472 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
473 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
474 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
475 b'significantly'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
476 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
477 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
478 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
479
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
480 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
481 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
482 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
483 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
484 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
485 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
486 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
487 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
488 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
489 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
490 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
491 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
492 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
493 b'execution time'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
494 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
495 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
496 )
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
497
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
498 register_optimization(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
499 improvement(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
500 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
501 type=OPTIMISATION,
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
502 description=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
503 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
504 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
505 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
506 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
507 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
508 ),
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
509 upgrademessage=_(
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
510 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
511 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
512 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
513 b'it'
32dcd783a985 upgrade: move optimisation to something more declarative
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46009
diff changeset
514 ),
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
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
518
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
519 def findoptimizations(repo):
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
520 """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
521 # 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
522 # 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
523 return list(ALL_OPTIMISATIONS)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
524
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43031
diff changeset
525
31900
0f0d7005b9ad upgrade: simplify 'determineactions'
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31899
diff changeset
526 def determineactions(repo, deficiencies, sourcereqs, destreqs):
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
527 """Determine upgrade actions that will be performed.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
528
31896
127b41e975fd upgrade: split finding deficiencies from finding optimisations
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31895
diff changeset
529 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
530 ``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
531 will be performed.
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
532
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
533 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
534 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
535 etc.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
536
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
537 Returns a list of action names.
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
538 """
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
539 newactions = []
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
540
31900
0f0d7005b9ad upgrade: simplify 'determineactions'
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31899
diff changeset
541 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
542 name = d._requirement
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
543
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
544 # 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
545 # 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
546 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
547 continue
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
548
31903
fa1088de2119 upgrade: use 'improvement' object for action too
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 31902
diff changeset
549 newactions.append(d)
30776
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
550
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
551 # 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
552 # 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
553
3997edc4a86d repair: determine what upgrade will do
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30775
diff changeset
554 return newactions
46052
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
555
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
556
46053
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
557 ### 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
558
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
559
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
560 def requiredsourcerequirements(repo):
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
561 """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
562
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
563 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
564 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
565 """
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
566 return {
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
567 # 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
568 b'revlogv1',
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
569 # 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
570 b'store',
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
571 }
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
572
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
573
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
574 def blocksourcerequirements(repo):
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
575 """Obtain requirements that will prevent an upgrade from occurring.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
576
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
577 An upgrade cannot be performed if the source repository contains a
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
578 requirements in the returned set.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
579 """
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
580 return {
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
581 # The upgrade code does not yet support these experimental features.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
582 # This is an artificial limitation.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
583 requirements.TREEMANIFEST_REQUIREMENT,
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
584 # This was a precursor to generaldelta and was never enabled by default.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
585 # It should (hopefully) not exist in the wild.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
586 b'parentdelta',
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
587 # Upgrade should operate on the actual store, not the shared link.
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
588 requirements.SHARED_REQUIREMENT,
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
589 }
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
590
a2a59cde9b9f upgrade: gather code about source checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46052
diff changeset
591
46052
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
592 def check_source_requirements(repo):
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
593 """Ensure that no existing requirements prevent the repository upgrade"""
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
594
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
595 required = requiredsourcerequirements(repo)
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
596 missingreqs = required - repo.requirements
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
597 if missingreqs:
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
598 msg = _(b'cannot upgrade repository; requirement missing: %s')
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
599 missingreqs = b', '.join(sorted(missingreqs))
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
600 raise error.Abort(msg % missingreqs)
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
601
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
602 blocking = blocksourcerequirements(repo)
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
603 blockingreqs = blocking & repo.requirements
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
604 if blockingreqs:
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
605 m = _(b'cannot upgrade repository; unsupported source requirement: %s')
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
606 blockingreqs = b', '.join(sorted(blockingreqs))
f4f956342cf1 upgrade: move requirements checking in a dedicated function
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46051
diff changeset
607 raise error.Abort(m % blockingreqs)
46055
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
608
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
609
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
610 ### Verify the validity of the planned requirement changes ####################
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
611
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
612
46056
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
613 def supportremovedrequirements(repo):
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
614 """Obtain requirements that can be removed during an upgrade.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
615
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
616 If an upgrade were to create a repository that dropped a requirement,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
617 the dropped requirement must appear in the returned set for the upgrade
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
618 to be allowed.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
619 """
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
620 supported = {
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
621 requirements.SPARSEREVLOG_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
622 requirements.SIDEDATA_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
623 requirements.COPIESSDC_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
624 requirements.NODEMAP_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
625 requirements.SHARESAFE_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
626 }
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
627 for name in compression.compengines:
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
628 engine = compression.compengines[name]
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
629 if engine.available() and engine.revlogheader():
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
630 supported.add(b'exp-compression-%s' % name)
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
631 if engine.name() == b'zstd':
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
632 supported.add(b'revlog-compression-zstd')
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
633 return supported
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
634
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
635
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
636 def supporteddestrequirements(repo):
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
637 """Obtain requirements that upgrade supports in the destination.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
638
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
639 If the result of the upgrade would create requirements not in this set,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
640 the upgrade is disallowed.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
641
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
642 Extensions should monkeypatch this to add their custom requirements.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
643 """
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
644 supported = {
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
645 b'dotencode',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
646 b'fncache',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
647 b'generaldelta',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
648 b'revlogv1',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
649 b'store',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
650 requirements.SPARSEREVLOG_REQUIREMENT,
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
651 requirements.SIDEDATA_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
652 requirements.COPIESSDC_REQUIREMENT,
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
653 requirements.NODEMAP_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
654 requirements.SHARESAFE_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
655 }
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
656 for name in compression.compengines:
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
657 engine = compression.compengines[name]
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
658 if engine.available() and engine.revlogheader():
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
659 supported.add(b'exp-compression-%s' % name)
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
660 if engine.name() == b'zstd':
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
661 supported.add(b'revlog-compression-zstd')
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
662 return supported
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
663
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
664
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
665 def allowednewrequirements(repo):
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
666 """Obtain requirements that can be added to a repository during upgrade.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
667
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
668 This is used to disallow proposed requirements from being added when
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
669 they weren't present before.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
670
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
671 We use a list of allowed requirement additions instead of a list of known
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
672 bad additions because the whitelist approach is safer and will prevent
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
673 future, unknown requirements from accidentally being added.
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
674 """
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
675 supported = {
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
676 b'dotencode',
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
677 b'fncache',
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
678 b'generaldelta',
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
679 requirements.SPARSEREVLOG_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
680 requirements.SIDEDATA_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
681 requirements.COPIESSDC_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
682 requirements.NODEMAP_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
683 requirements.SHARESAFE_REQUIREMENT,
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
684 }
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
685 for name in compression.compengines:
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
686 engine = compression.compengines[name]
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
687 if engine.available() and engine.revlogheader():
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
688 supported.add(b'exp-compression-%s' % name)
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
689 if engine.name() == b'zstd':
08802795ae90 upgrade: gather code about requirement checking together
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
690 supported.add(b'revlog-compression-zstd')
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
691 return supported
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
692
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46055
diff changeset
693
46055
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
694 def check_requirements_changes(repo, new_reqs):
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
695 old_reqs = repo.requirements
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
696
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
697 support_removal = supportremovedrequirements(repo)
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
698 no_remove_reqs = old_reqs - new_reqs - support_removal
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
699 if no_remove_reqs:
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
700 msg = _(b'cannot upgrade repository; requirement would be removed: %s')
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
701 no_remove_reqs = b', '.join(sorted(no_remove_reqs))
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
702 raise error.Abort(msg % no_remove_reqs)
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
703
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
704 support_addition = allowednewrequirements(repo)
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
705 no_add_reqs = new_reqs - old_reqs - support_addition
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
706 if no_add_reqs:
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
707 m = _(b'cannot upgrade repository; do not support adding requirement: ')
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
708 no_add_reqs = b', '.join(sorted(no_add_reqs))
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
709 raise error.Abort(m + no_add_reqs)
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
710
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
711 supported = supporteddestrequirements(repo)
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
712 unsupported_reqs = new_reqs - supported
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
713 if unsupported_reqs:
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
714 msg = _(
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
715 b'cannot upgrade repository; do not support destination '
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
716 b'requirement: %s'
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
717 )
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
718 unsupported_reqs = b', '.join(sorted(unsupported_reqs))
72b7b4bf3e65 upgrade: extract the checking of target requirements change
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46053
diff changeset
719 raise error.Abort(msg % unsupported_reqs)