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@@ -1,320 +1,324 b'' | |||
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1 | 1 | # upgrade.py - functions for in place upgrade of Mercurial repository |
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2 | 2 | # |
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3 | 3 | # Copyright (c) 2016-present, Gregory Szorc |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | from .i18n import _ |
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11 | 11 | from . import ( |
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12 | 12 | error, |
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13 | 13 | hg, |
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14 | 14 | localrepo, |
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15 | 15 | pycompat, |
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16 | 16 | ) |
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17 | 17 | |
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18 | 18 | from .upgrade_utils import ( |
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19 | 19 | actions as upgrade_actions, |
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20 | 20 | engine as upgrade_engine, |
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21 | 21 | ) |
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22 | 22 | |
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23 | 23 | allformatvariant = upgrade_actions.allformatvariant |
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24 | 24 | |
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25 | 25 | # search without '-' to support older form on newer client. |
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26 | 26 | # |
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27 | 27 | # We don't enforce backward compatibility for debug command so this |
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28 | 28 | # might eventually be dropped. However, having to use two different |
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29 | 29 | # forms in script when comparing result is anoying enough to add |
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30 | 30 | # backward compatibility for a while. |
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31 | 31 | legacy_opts_map = { |
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32 | 32 | b'redeltaparent': b're-delta-parent', |
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33 | 33 | b'redeltamultibase': b're-delta-multibase', |
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34 | 34 | b'redeltaall': b're-delta-all', |
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35 | 35 | b'redeltafulladd': b're-delta-fulladd', |
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36 | 36 | } |
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37 | 37 | |
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38 | 38 | |
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39 | 39 | def upgraderepo( |
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40 | 40 | ui, |
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41 | 41 | repo, |
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42 | 42 | run=False, |
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43 | 43 | optimize=None, |
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44 | 44 | backup=True, |
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45 | 45 | manifest=None, |
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46 | 46 | changelog=None, |
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47 | 47 | filelogs=None, |
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48 | 48 | ): |
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49 | 49 | """Upgrade a repository in place.""" |
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50 | 50 | if optimize is None: |
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51 | 51 | optimize = [] |
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52 | 52 | optimize = {legacy_opts_map.get(o, o) for o in optimize} |
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53 | 53 | repo = repo.unfiltered() |
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54 | 54 | |
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55 | 55 | revlogs = set(upgrade_engine.UPGRADE_ALL_REVLOGS) |
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56 | 56 | specentries = ( |
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57 | 57 | (upgrade_engine.UPGRADE_CHANGELOG, changelog), |
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58 | 58 | (upgrade_engine.UPGRADE_MANIFEST, manifest), |
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59 | 59 | (upgrade_engine.UPGRADE_FILELOGS, filelogs), |
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60 | 60 | ) |
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61 | 61 | specified = [(y, x) for (y, x) in specentries if x is not None] |
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62 | 62 | if specified: |
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63 | 63 | # we have some limitation on revlogs to be recloned |
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64 | 64 | if any(x for y, x in specified): |
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65 | 65 | revlogs = set() |
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66 | 66 | for upgrade, enabled in specified: |
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67 | 67 | if enabled: |
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68 | 68 | revlogs.add(upgrade) |
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69 | 69 | else: |
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70 | 70 | # none are enabled |
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71 | 71 | for upgrade, __ in specified: |
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72 | 72 | revlogs.discard(upgrade) |
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73 | 73 | |
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74 | 74 | # Ensure the repository can be upgraded. |
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75 | 75 | upgrade_actions.check_source_requirements(repo) |
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76 | 76 | |
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77 | 77 | default_options = localrepo.defaultcreateopts(repo.ui) |
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78 | 78 | newreqs = localrepo.newreporequirements(repo.ui, default_options) |
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79 | 79 | newreqs.update(upgrade_actions.preservedrequirements(repo)) |
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80 | 80 | |
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81 | 81 | upgrade_actions.check_requirements_changes(repo, newreqs) |
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82 | 82 | |
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83 | 83 | # Find and validate all improvements that can be made. |
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84 | 84 | alloptimizations = upgrade_actions.findoptimizations(repo) |
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85 | 85 | |
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86 | 86 | # Apply and Validate arguments. |
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87 | 87 | optimizations = [] |
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88 | 88 | for o in alloptimizations: |
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89 | 89 | if o.name in optimize: |
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90 | 90 | optimizations.append(o) |
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91 | 91 | optimize.discard(o.name) |
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92 | 92 | |
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93 | 93 | if optimize: # anything left is unknown |
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94 | 94 | raise error.Abort( |
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95 | 95 | _(b'unknown optimization action requested: %s') |
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96 | 96 | % b', '.join(sorted(optimize)), |
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97 | 97 | hint=_(b'run without arguments to see valid optimizations'), |
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98 | 98 | ) |
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99 | 99 | |
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100 | 100 | deficiencies = upgrade_actions.finddeficiencies(repo) |
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101 | 101 | actions = upgrade_actions.determineactions( |
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102 | 102 | repo, deficiencies, repo.requirements, newreqs |
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103 | 103 | ) |
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104 | 104 | actions.extend( |
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105 | 105 | o |
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106 | 106 | for o in sorted(optimizations) |
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107 | 107 | # determineactions could have added optimisation |
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108 | 108 | if o not in actions |
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109 | 109 | ) |
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110 | 110 | |
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111 | 111 | removedreqs = repo.requirements - newreqs |
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112 | 112 | addedreqs = newreqs - repo.requirements |
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113 | 113 | |
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114 | 114 | if revlogs != upgrade_engine.UPGRADE_ALL_REVLOGS: |
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115 | 115 | incompatible = upgrade_actions.RECLONES_REQUIREMENTS & ( |
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116 | 116 | removedreqs | addedreqs |
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117 | 117 | ) |
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118 | 118 | if incompatible: |
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119 | 119 | msg = _( |
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120 | 120 | b'ignoring revlogs selection flags, format requirements ' |
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121 | 121 | b'change: %s\n' |
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122 | 122 | ) |
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123 | 123 | ui.warn(msg % b', '.join(sorted(incompatible))) |
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124 | 124 | revlogs = upgrade_engine.UPGRADE_ALL_REVLOGS |
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125 | 125 | |
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126 | 126 | def write_labeled(l, label): |
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127 | 127 | first = True |
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128 | 128 | for r in sorted(l): |
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129 | 129 | if not first: |
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130 | 130 | ui.write(b', ') |
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131 | 131 | ui.write(r, label=label) |
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132 | 132 | first = False |
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133 | 133 | |
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134 | 134 | def printrequirements(): |
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135 | 135 | ui.write(_(b'requirements\n')) |
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136 | 136 | ui.write(_(b' preserved: ')) |
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137 | 137 | write_labeled( |
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138 | 138 | newreqs & repo.requirements, "upgrade-repo.requirement.preserved" |
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139 | 139 | ) |
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140 | 140 | ui.write((b'\n')) |
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141 | 141 | removed = repo.requirements - newreqs |
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142 | 142 | if repo.requirements - newreqs: |
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143 | 143 | ui.write(_(b' removed: ')) |
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144 | 144 | write_labeled(removed, "upgrade-repo.requirement.removed") |
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145 | 145 | ui.write((b'\n')) |
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146 | 146 | added = newreqs - repo.requirements |
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147 | 147 | if added: |
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148 | 148 | ui.write(_(b' added: ')) |
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149 | 149 | write_labeled(added, "upgrade-repo.requirement.added") |
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150 | 150 | ui.write((b'\n')) |
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151 | 151 | ui.write(b'\n') |
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152 | 152 | |
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153 | 153 | def printoptimisations(): |
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154 | 154 | optimisations = [ |
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155 | 155 | a for a in actions if a.type == upgrade_actions.OPTIMISATION |
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156 | 156 | ] |
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157 | 157 | optimisations.sort(key=lambda a: a.name) |
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158 | 158 | if optimisations: |
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159 | 159 | ui.write(_(b'optimisations: ')) |
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160 | 160 | write_labeled( |
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161 | 161 | [a.name for a in optimisations], |
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162 | 162 | "upgrade-repo.optimisation.performed", |
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163 | 163 | ) |
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164 | 164 | ui.write(b'\n\n') |
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165 | 165 | |
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166 | 166 | def printupgradeactions(): |
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167 | 167 | for a in actions: |
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168 | 168 | ui.status(b'%s\n %s\n\n' % (a.name, a.upgrademessage)) |
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169 | 169 | |
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170 | 170 | def print_affected_revlogs(): |
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171 | 171 | if not revlogs: |
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172 | 172 | ui.write((b'no revlogs to process\n')) |
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173 | 173 | else: |
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174 | 174 | ui.write((b'processed revlogs:\n')) |
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175 | 175 | for r in sorted(revlogs): |
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176 | 176 | ui.write((b' - %s\n' % r)) |
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177 | 177 | ui.write((b'\n')) |
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178 | 178 | |
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179 | upgrade_op = upgrade_actions.UpgradeOperation( | |
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180 | newreqs, | |
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181 | [a.name for a in actions], | |
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182 | revlogs, | |
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183 | ) | |
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184 | ||
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179 | 185 | if not run: |
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180 | 186 | fromconfig = [] |
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181 | 187 | onlydefault = [] |
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182 | 188 | |
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183 | 189 | for d in deficiencies: |
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184 | 190 | if d.fromconfig(repo): |
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185 | 191 | fromconfig.append(d) |
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186 | 192 | elif d.default: |
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187 | 193 | onlydefault.append(d) |
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188 | 194 | |
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189 | 195 | if fromconfig or onlydefault: |
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190 | 196 | |
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191 | 197 | if fromconfig: |
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192 | 198 | ui.status( |
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193 | 199 | _( |
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194 | 200 | b'repository lacks features recommended by ' |
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195 | 201 | b'current config options:\n\n' |
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196 | 202 | ) |
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197 | 203 | ) |
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198 | 204 | for i in fromconfig: |
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199 | 205 | ui.status(b'%s\n %s\n\n' % (i.name, i.description)) |
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200 | 206 | |
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201 | 207 | if onlydefault: |
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202 | 208 | ui.status( |
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203 | 209 | _( |
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204 | 210 | b'repository lacks features used by the default ' |
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205 | 211 | b'config options:\n\n' |
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206 | 212 | ) |
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207 | 213 | ) |
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208 | 214 | for i in onlydefault: |
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209 | 215 | ui.status(b'%s\n %s\n\n' % (i.name, i.description)) |
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210 | 216 | |
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211 | 217 | ui.status(b'\n') |
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212 | 218 | else: |
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213 | 219 | ui.status( |
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214 | 220 | _( |
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215 | 221 | b'(no feature deficiencies found in existing ' |
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216 | 222 | b'repository)\n' |
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217 | 223 | ) |
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218 | 224 | ) |
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219 | 225 | |
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220 | 226 | ui.status( |
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221 | 227 | _( |
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222 | 228 | b'performing an upgrade with "--run" will make the following ' |
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223 | 229 | b'changes:\n\n' |
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224 | 230 | ) |
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225 | 231 | ) |
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226 | 232 | |
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227 | 233 | printrequirements() |
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228 | 234 | printoptimisations() |
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229 | 235 | printupgradeactions() |
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230 | 236 | print_affected_revlogs() |
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231 | 237 | |
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232 | 238 | unusedoptimize = [i for i in alloptimizations if i not in actions] |
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233 | 239 | |
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234 | 240 | if unusedoptimize: |
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235 | 241 | ui.status( |
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236 | 242 | _( |
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237 | 243 | b'additional optimizations are available by specifying ' |
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238 | 244 | b'"--optimize <name>":\n\n' |
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239 | 245 | ) |
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240 | 246 | ) |
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241 | 247 | for i in unusedoptimize: |
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242 | 248 | ui.status(_(b'%s\n %s\n\n') % (i.name, i.description)) |
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243 | 249 | return |
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244 | 250 | |
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245 | 251 | # Else we're in the run=true case. |
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246 | 252 | ui.write(_(b'upgrade will perform the following actions:\n\n')) |
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247 | 253 | printrequirements() |
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248 | 254 | printoptimisations() |
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249 | 255 | printupgradeactions() |
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250 | 256 | print_affected_revlogs() |
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251 | 257 | |
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252 | upgradeactions = [a.name for a in actions] | |
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253 | ||
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254 | 258 | ui.status(_(b'beginning upgrade...\n')) |
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255 | 259 | with repo.wlock(), repo.lock(): |
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256 | 260 | ui.status(_(b'repository locked and read-only\n')) |
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257 | 261 | # Our strategy for upgrading the repository is to create a new, |
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258 | 262 | # temporary repository, write data to it, then do a swap of the |
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259 | 263 | # data. There are less heavyweight ways to do this, but it is easier |
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260 | 264 | # to create a new repo object than to instantiate all the components |
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261 | 265 | # (like the store) separately. |
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262 | 266 | tmppath = pycompat.mkdtemp(prefix=b'upgrade.', dir=repo.path) |
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263 | 267 | backuppath = None |
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264 | 268 | try: |
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265 | 269 | ui.status( |
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266 | 270 | _( |
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267 | 271 | b'creating temporary repository to stage migrated ' |
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268 | 272 | b'data: %s\n' |
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269 | 273 | ) |
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270 | 274 | % tmppath |
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271 | 275 | ) |
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272 | 276 | |
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273 | 277 | # clone ui without using ui.copy because repo.ui is protected |
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274 | 278 | repoui = repo.ui.__class__(repo.ui) |
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275 | 279 | dstrepo = hg.repository(repoui, path=tmppath, create=True) |
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276 | 280 | |
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277 | 281 | with dstrepo.wlock(), dstrepo.lock(): |
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278 | 282 | backuppath = upgrade_engine.upgrade( |
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279 |
ui, repo, dstrepo, |
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283 | ui, repo, dstrepo, upgrade_op | |
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280 | 284 | ) |
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281 | 285 | if not (backup or backuppath is None): |
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282 | 286 | ui.status( |
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283 | 287 | _(b'removing old repository content%s\n') % backuppath |
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284 | 288 | ) |
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285 | 289 | repo.vfs.rmtree(backuppath, forcibly=True) |
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286 | 290 | backuppath = None |
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287 | 291 | |
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288 | 292 | finally: |
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289 | 293 | ui.status(_(b'removing temporary repository %s\n') % tmppath) |
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290 | 294 | repo.vfs.rmtree(tmppath, forcibly=True) |
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291 | 295 | |
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292 | 296 | if backuppath and not ui.quiet: |
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293 | 297 | ui.warn( |
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294 | 298 | _(b'copy of old repository backed up at %s\n') % backuppath |
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295 | 299 | ) |
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296 | 300 | ui.warn( |
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297 | 301 | _( |
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298 | 302 | b'the old repository will not be deleted; remove ' |
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299 | 303 | b'it to free up disk space once the upgraded ' |
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300 | 304 | b'repository is verified\n' |
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301 | 305 | ) |
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302 | 306 | ) |
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303 | 307 | |
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304 | 308 | if upgrade_actions.sharesafe.name in addedreqs: |
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305 | 309 | ui.warn( |
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306 | 310 | _( |
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307 | 311 | b'repository upgraded to share safe mode, existing' |
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308 | 312 | b' shares will still work in old non-safe mode. ' |
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309 | 313 | b'Re-share existing shares to use them in safe mode' |
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310 | 314 | b' New shares will be created in safe mode.\n' |
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311 | 315 | ) |
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312 | 316 | ) |
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313 | 317 | if upgrade_actions.sharesafe.name in removedreqs: |
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314 | 318 | ui.warn( |
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315 | 319 | _( |
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316 | 320 | b'repository downgraded to not use share safe mode, ' |
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317 | 321 | b'existing shares will not work and needs to' |
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318 | 322 | b' be reshared.\n' |
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319 | 323 | ) |
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320 | 324 | ) |
@@ -1,719 +1,728 b'' | |||
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1 | 1 | # upgrade.py - functions for in place upgrade of Mercurial repository |
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2 | 2 | # |
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3 | 3 | # Copyright (c) 2016-present, Gregory Szorc |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | from ..i18n import _ |
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11 | 11 | from .. import ( |
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12 | 12 | error, |
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13 | 13 | localrepo, |
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14 | 14 | requirements, |
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15 | 15 | util, |
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16 | 16 | ) |
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17 | 17 | |
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18 | 18 | from ..utils import compression |
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19 | 19 | |
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20 | 20 | # list of requirements that request a clone of all revlog if added/removed |
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21 | 21 | RECLONES_REQUIREMENTS = { |
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22 | 22 | b'generaldelta', |
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23 | 23 | requirements.SPARSEREVLOG_REQUIREMENT, |
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24 | 24 | } |
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25 | 25 | |
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26 | 26 | |
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27 | 27 | def preservedrequirements(repo): |
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28 | 28 | return set() |
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29 | 29 | |
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30 | 30 | |
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31 | 31 | DEFICIENCY = b'deficiency' |
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32 | 32 | OPTIMISATION = b'optimization' |
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33 | 33 | |
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34 | 34 | |
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35 | 35 | class improvement(object): |
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36 | 36 | """Represents an improvement that can be made as part of an upgrade. |
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37 | 37 | |
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38 | 38 | The following attributes are defined on each instance: |
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39 | 39 | |
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40 | 40 | name |
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41 | 41 | Machine-readable string uniquely identifying this improvement. It |
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42 | 42 | will be mapped to an action later in the upgrade process. |
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43 | 43 | |
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44 | 44 | type |
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45 | 45 | Either ``DEFICIENCY`` or ``OPTIMISATION``. A deficiency is an obvious |
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46 | 46 | problem. An optimization is an action (sometimes optional) that |
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47 | 47 | can be taken to further improve the state of the repository. |
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48 | 48 | |
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49 | 49 | description |
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50 | 50 | Message intended for humans explaining the improvement in more detail, |
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51 | 51 | including the implications of it. For ``DEFICIENCY`` types, should be |
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52 | 52 | worded in the present tense. For ``OPTIMISATION`` types, should be |
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53 | 53 | worded in the future tense. |
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54 | 54 | |
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55 | 55 | upgrademessage |
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56 | 56 | Message intended for humans explaining what an upgrade addressing this |
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57 | 57 | issue will do. Should be worded in the future tense. |
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58 | 58 | """ |
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59 | 59 | |
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60 | 60 | def __init__(self, name, type, description, upgrademessage): |
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61 | 61 | self.name = name |
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62 | 62 | self.type = type |
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63 | 63 | self.description = description |
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64 | 64 | self.upgrademessage = upgrademessage |
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65 | 65 | |
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66 | 66 | def __eq__(self, other): |
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67 | 67 | if not isinstance(other, improvement): |
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68 | 68 | # This is what python tell use to do |
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69 | 69 | return NotImplemented |
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70 | 70 | return self.name == other.name |
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71 | 71 | |
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72 | 72 | def __ne__(self, other): |
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73 | 73 | return not (self == other) |
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74 | 74 | |
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75 | 75 | def __hash__(self): |
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76 | 76 | return hash(self.name) |
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77 | 77 | |
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78 | 78 | |
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79 | 79 | allformatvariant = [] |
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80 | 80 | |
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81 | 81 | |
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82 | 82 | def registerformatvariant(cls): |
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83 | 83 | allformatvariant.append(cls) |
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84 | 84 | return cls |
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85 | 85 | |
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86 | 86 | |
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87 | 87 | class formatvariant(improvement): |
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88 | 88 | """an improvement subclass dedicated to repository format""" |
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89 | 89 | |
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90 | 90 | type = DEFICIENCY |
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91 | 91 | ### The following attributes should be defined for each class: |
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92 | 92 | |
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93 | 93 | # machine-readable string uniquely identifying this improvement. it will be |
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94 | 94 | # mapped to an action later in the upgrade process. |
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95 | 95 | name = None |
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96 | 96 | |
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97 | 97 | # message intended for humans explaining the improvement in more detail, |
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98 | 98 | # including the implications of it ``DEFICIENCY`` types, should be worded |
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99 | 99 | # in the present tense. |
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100 | 100 | description = None |
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101 | 101 | |
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102 | 102 | # message intended for humans explaining what an upgrade addressing this |
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103 | 103 | # issue will do. should be worded in the future tense. |
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104 | 104 | upgrademessage = None |
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105 | 105 | |
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106 | 106 | # value of current Mercurial default for new repository |
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107 | 107 | default = None |
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108 | 108 | |
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109 | 109 | def __init__(self): |
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110 | 110 | raise NotImplementedError() |
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111 | 111 | |
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112 | 112 | @staticmethod |
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113 | 113 | def fromrepo(repo): |
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114 | 114 | """current value of the variant in the repository""" |
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115 | 115 | raise NotImplementedError() |
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116 | 116 | |
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117 | 117 | @staticmethod |
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118 | 118 | def fromconfig(repo): |
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119 | 119 | """current value of the variant in the configuration""" |
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120 | 120 | raise NotImplementedError() |
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121 | 121 | |
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122 | 122 | |
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123 | 123 | class requirementformatvariant(formatvariant): |
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124 | 124 | """formatvariant based on a 'requirement' name. |
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125 | 125 | |
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126 | 126 | Many format variant are controlled by a 'requirement'. We define a small |
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127 | 127 | subclass to factor the code. |
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128 | 128 | """ |
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129 | 129 | |
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130 | 130 | # the requirement that control this format variant |
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131 | 131 | _requirement = None |
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132 | 132 | |
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133 | 133 | @staticmethod |
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134 | 134 | def _newreporequirements(ui): |
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135 | 135 | return localrepo.newreporequirements( |
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136 | 136 | ui, localrepo.defaultcreateopts(ui) |
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137 | 137 | ) |
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138 | 138 | |
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139 | 139 | @classmethod |
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140 | 140 | def fromrepo(cls, repo): |
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141 | 141 | assert cls._requirement is not None |
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142 | 142 | return cls._requirement in repo.requirements |
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143 | 143 | |
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144 | 144 | @classmethod |
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145 | 145 | def fromconfig(cls, repo): |
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146 | 146 | assert cls._requirement is not None |
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147 | 147 | return cls._requirement in cls._newreporequirements(repo.ui) |
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148 | 148 | |
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149 | 149 | |
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150 | 150 | @registerformatvariant |
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151 | 151 | class fncache(requirementformatvariant): |
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152 | 152 | name = b'fncache' |
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153 | 153 | |
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154 | 154 | _requirement = b'fncache' |
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155 | 155 | |
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156 | 156 | default = True |
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157 | 157 | |
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158 | 158 | description = _( |
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159 | 159 | b'long and reserved filenames may not work correctly; ' |
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160 | 160 | b'repository performance is sub-optimal' |
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161 | 161 | ) |
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162 | 162 | |
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163 | 163 | upgrademessage = _( |
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164 | 164 | b'repository will be more resilient to storing ' |
|
165 | 165 | b'certain paths and performance of certain ' |
|
166 | 166 | b'operations should be improved' |
|
167 | 167 | ) |
|
168 | 168 | |
|
169 | 169 | |
|
170 | 170 | @registerformatvariant |
|
171 | 171 | class dotencode(requirementformatvariant): |
|
172 | 172 | name = b'dotencode' |
|
173 | 173 | |
|
174 | 174 | _requirement = b'dotencode' |
|
175 | 175 | |
|
176 | 176 | default = True |
|
177 | 177 | |
|
178 | 178 | description = _( |
|
179 | 179 | b'storage of filenames beginning with a period or ' |
|
180 | 180 | b'space may not work correctly' |
|
181 | 181 | ) |
|
182 | 182 | |
|
183 | 183 | upgrademessage = _( |
|
184 | 184 | b'repository will be better able to store files ' |
|
185 | 185 | b'beginning with a space or period' |
|
186 | 186 | ) |
|
187 | 187 | |
|
188 | 188 | |
|
189 | 189 | @registerformatvariant |
|
190 | 190 | class generaldelta(requirementformatvariant): |
|
191 | 191 | name = b'generaldelta' |
|
192 | 192 | |
|
193 | 193 | _requirement = b'generaldelta' |
|
194 | 194 | |
|
195 | 195 | default = True |
|
196 | 196 | |
|
197 | 197 | description = _( |
|
198 | 198 | b'deltas within internal storage are unable to ' |
|
199 | 199 | b'choose optimal revisions; repository is larger and ' |
|
200 | 200 | b'slower than it could be; interaction with other ' |
|
201 | 201 | b'repositories may require extra network and CPU ' |
|
202 | 202 | b'resources, making "hg push" and "hg pull" slower' |
|
203 | 203 | ) |
|
204 | 204 | |
|
205 | 205 | upgrademessage = _( |
|
206 | 206 | b'repository storage will be able to create ' |
|
207 | 207 | b'optimal deltas; new repository data will be ' |
|
208 | 208 | b'smaller and read times should decrease; ' |
|
209 | 209 | b'interacting with other repositories using this ' |
|
210 | 210 | b'storage model should require less network and ' |
|
211 | 211 | b'CPU resources, making "hg push" and "hg pull" ' |
|
212 | 212 | b'faster' |
|
213 | 213 | ) |
|
214 | 214 | |
|
215 | 215 | |
|
216 | 216 | @registerformatvariant |
|
217 | 217 | class sharesafe(requirementformatvariant): |
|
218 | 218 | name = b'exp-sharesafe' |
|
219 | 219 | _requirement = requirements.SHARESAFE_REQUIREMENT |
|
220 | 220 | |
|
221 | 221 | default = False |
|
222 | 222 | |
|
223 | 223 | description = _( |
|
224 | 224 | b'old shared repositories do not share source repository ' |
|
225 | 225 | b'requirements and config. This leads to various problems ' |
|
226 | 226 | b'when the source repository format is upgraded or some new ' |
|
227 | 227 | b'extensions are enabled.' |
|
228 | 228 | ) |
|
229 | 229 | |
|
230 | 230 | upgrademessage = _( |
|
231 | 231 | b'Upgrades a repository to share-safe format so that future ' |
|
232 | 232 | b'shares of this repository share its requirements and configs.' |
|
233 | 233 | ) |
|
234 | 234 | |
|
235 | 235 | |
|
236 | 236 | @registerformatvariant |
|
237 | 237 | class sparserevlog(requirementformatvariant): |
|
238 | 238 | name = b'sparserevlog' |
|
239 | 239 | |
|
240 | 240 | _requirement = requirements.SPARSEREVLOG_REQUIREMENT |
|
241 | 241 | |
|
242 | 242 | default = True |
|
243 | 243 | |
|
244 | 244 | description = _( |
|
245 | 245 | b'in order to limit disk reading and memory usage on older ' |
|
246 | 246 | b'version, the span of a delta chain from its root to its ' |
|
247 | 247 | b'end is limited, whatever the relevant data in this span. ' |
|
248 | 248 | b'This can severly limit Mercurial ability to build good ' |
|
249 | 249 | b'chain of delta resulting is much more storage space being ' |
|
250 | 250 | b'taken and limit reusability of on disk delta during ' |
|
251 | 251 | b'exchange.' |
|
252 | 252 | ) |
|
253 | 253 | |
|
254 | 254 | upgrademessage = _( |
|
255 | 255 | b'Revlog supports delta chain with more unused data ' |
|
256 | 256 | b'between payload. These gaps will be skipped at read ' |
|
257 | 257 | b'time. This allows for better delta chains, making a ' |
|
258 | 258 | b'better compression and faster exchange with server.' |
|
259 | 259 | ) |
|
260 | 260 | |
|
261 | 261 | |
|
262 | 262 | @registerformatvariant |
|
263 | 263 | class sidedata(requirementformatvariant): |
|
264 | 264 | name = b'sidedata' |
|
265 | 265 | |
|
266 | 266 | _requirement = requirements.SIDEDATA_REQUIREMENT |
|
267 | 267 | |
|
268 | 268 | default = False |
|
269 | 269 | |
|
270 | 270 | description = _( |
|
271 | 271 | b'Allows storage of extra data alongside a revision, ' |
|
272 | 272 | b'unlocking various caching options.' |
|
273 | 273 | ) |
|
274 | 274 | |
|
275 | 275 | upgrademessage = _(b'Allows storage of extra data alongside a revision.') |
|
276 | 276 | |
|
277 | 277 | |
|
278 | 278 | @registerformatvariant |
|
279 | 279 | class persistentnodemap(requirementformatvariant): |
|
280 | 280 | name = b'persistent-nodemap' |
|
281 | 281 | |
|
282 | 282 | _requirement = requirements.NODEMAP_REQUIREMENT |
|
283 | 283 | |
|
284 | 284 | default = False |
|
285 | 285 | |
|
286 | 286 | description = _( |
|
287 | 287 | b'persist the node -> rev mapping on disk to speedup lookup' |
|
288 | 288 | ) |
|
289 | 289 | |
|
290 | 290 | upgrademessage = _(b'Speedup revision lookup by node id.') |
|
291 | 291 | |
|
292 | 292 | |
|
293 | 293 | @registerformatvariant |
|
294 | 294 | class copiessdc(requirementformatvariant): |
|
295 | 295 | name = b'copies-sdc' |
|
296 | 296 | |
|
297 | 297 | _requirement = requirements.COPIESSDC_REQUIREMENT |
|
298 | 298 | |
|
299 | 299 | default = False |
|
300 | 300 | |
|
301 | 301 | description = _(b'Stores copies information alongside changesets.') |
|
302 | 302 | |
|
303 | 303 | upgrademessage = _( |
|
304 | 304 | b'Allows to use more efficient algorithm to deal with ' b'copy tracing.' |
|
305 | 305 | ) |
|
306 | 306 | |
|
307 | 307 | |
|
308 | 308 | @registerformatvariant |
|
309 | 309 | class removecldeltachain(formatvariant): |
|
310 | 310 | name = b'plain-cl-delta' |
|
311 | 311 | |
|
312 | 312 | default = True |
|
313 | 313 | |
|
314 | 314 | description = _( |
|
315 | 315 | b'changelog storage is using deltas instead of ' |
|
316 | 316 | b'raw entries; changelog reading and any ' |
|
317 | 317 | b'operation relying on changelog data are slower ' |
|
318 | 318 | b'than they could be' |
|
319 | 319 | ) |
|
320 | 320 | |
|
321 | 321 | upgrademessage = _( |
|
322 | 322 | b'changelog storage will be reformated to ' |
|
323 | 323 | b'store raw entries; changelog reading will be ' |
|
324 | 324 | b'faster; changelog size may be reduced' |
|
325 | 325 | ) |
|
326 | 326 | |
|
327 | 327 | @staticmethod |
|
328 | 328 | def fromrepo(repo): |
|
329 | 329 | # Mercurial 4.0 changed changelogs to not use delta chains. Search for |
|
330 | 330 | # changelogs with deltas. |
|
331 | 331 | cl = repo.changelog |
|
332 | 332 | chainbase = cl.chainbase |
|
333 | 333 | return all(rev == chainbase(rev) for rev in cl) |
|
334 | 334 | |
|
335 | 335 | @staticmethod |
|
336 | 336 | def fromconfig(repo): |
|
337 | 337 | return True |
|
338 | 338 | |
|
339 | 339 | |
|
340 | 340 | @registerformatvariant |
|
341 | 341 | class compressionengine(formatvariant): |
|
342 | 342 | name = b'compression' |
|
343 | 343 | default = b'zlib' |
|
344 | 344 | |
|
345 | 345 | description = _( |
|
346 | 346 | b'Compresion algorithm used to compress data. ' |
|
347 | 347 | b'Some engine are faster than other' |
|
348 | 348 | ) |
|
349 | 349 | |
|
350 | 350 | upgrademessage = _( |
|
351 | 351 | b'revlog content will be recompressed with the new algorithm.' |
|
352 | 352 | ) |
|
353 | 353 | |
|
354 | 354 | @classmethod |
|
355 | 355 | def fromrepo(cls, repo): |
|
356 | 356 | # we allow multiple compression engine requirement to co-exist because |
|
357 | 357 | # strickly speaking, revlog seems to support mixed compression style. |
|
358 | 358 | # |
|
359 | 359 | # The compression used for new entries will be "the last one" |
|
360 | 360 | compression = b'zlib' |
|
361 | 361 | for req in repo.requirements: |
|
362 | 362 | prefix = req.startswith |
|
363 | 363 | if prefix(b'revlog-compression-') or prefix(b'exp-compression-'): |
|
364 | 364 | compression = req.split(b'-', 2)[2] |
|
365 | 365 | return compression |
|
366 | 366 | |
|
367 | 367 | @classmethod |
|
368 | 368 | def fromconfig(cls, repo): |
|
369 | 369 | compengines = repo.ui.configlist(b'format', b'revlog-compression') |
|
370 | 370 | # return the first valid value as the selection code would do |
|
371 | 371 | for comp in compengines: |
|
372 | 372 | if comp in util.compengines: |
|
373 | 373 | return comp |
|
374 | 374 | |
|
375 | 375 | # no valide compression found lets display it all for clarity |
|
376 | 376 | return b','.join(compengines) |
|
377 | 377 | |
|
378 | 378 | |
|
379 | 379 | @registerformatvariant |
|
380 | 380 | class compressionlevel(formatvariant): |
|
381 | 381 | name = b'compression-level' |
|
382 | 382 | default = b'default' |
|
383 | 383 | |
|
384 | 384 | description = _(b'compression level') |
|
385 | 385 | |
|
386 | 386 | upgrademessage = _(b'revlog content will be recompressed') |
|
387 | 387 | |
|
388 | 388 | @classmethod |
|
389 | 389 | def fromrepo(cls, repo): |
|
390 | 390 | comp = compressionengine.fromrepo(repo) |
|
391 | 391 | level = None |
|
392 | 392 | if comp == b'zlib': |
|
393 | 393 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') |
|
394 | 394 | elif comp == b'zstd': |
|
395 | 395 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') |
|
396 | 396 | if level is None: |
|
397 | 397 | return b'default' |
|
398 | 398 | return bytes(level) |
|
399 | 399 | |
|
400 | 400 | @classmethod |
|
401 | 401 | def fromconfig(cls, repo): |
|
402 | 402 | comp = compressionengine.fromconfig(repo) |
|
403 | 403 | level = None |
|
404 | 404 | if comp == b'zlib': |
|
405 | 405 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') |
|
406 | 406 | elif comp == b'zstd': |
|
407 | 407 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') |
|
408 | 408 | if level is None: |
|
409 | 409 | return b'default' |
|
410 | 410 | return bytes(level) |
|
411 | 411 | |
|
412 | 412 | |
|
413 | 413 | def finddeficiencies(repo): |
|
414 | 414 | """returns a list of deficiencies that the repo suffer from""" |
|
415 | 415 | deficiencies = [] |
|
416 | 416 | |
|
417 | 417 | # We could detect lack of revlogv1 and store here, but they were added |
|
418 | 418 | # in 0.9.2 and we don't support upgrading repos without these |
|
419 | 419 | # requirements, so let's not bother. |
|
420 | 420 | |
|
421 | 421 | for fv in allformatvariant: |
|
422 | 422 | if not fv.fromrepo(repo): |
|
423 | 423 | deficiencies.append(fv) |
|
424 | 424 | |
|
425 | 425 | return deficiencies |
|
426 | 426 | |
|
427 | 427 | |
|
428 | 428 | ALL_OPTIMISATIONS = [] |
|
429 | 429 | |
|
430 | 430 | |
|
431 | 431 | def register_optimization(obj): |
|
432 | 432 | ALL_OPTIMISATIONS.append(obj) |
|
433 | 433 | return obj |
|
434 | 434 | |
|
435 | 435 | |
|
436 | 436 | register_optimization( |
|
437 | 437 | improvement( |
|
438 | 438 | name=b're-delta-parent', |
|
439 | 439 | type=OPTIMISATION, |
|
440 | 440 | description=_( |
|
441 | 441 | b'deltas within internal storage will be recalculated to ' |
|
442 | 442 | b'choose an optimal base revision where this was not ' |
|
443 | 443 | b'already done; the size of the repository may shrink and ' |
|
444 | 444 | b'various operations may become faster; the first time ' |
|
445 | 445 | b'this optimization is performed could slow down upgrade ' |
|
446 | 446 | b'execution considerably; subsequent invocations should ' |
|
447 | 447 | b'not run noticeably slower' |
|
448 | 448 | ), |
|
449 | 449 | upgrademessage=_( |
|
450 | 450 | b'deltas within internal storage will choose a new ' |
|
451 | 451 | b'base revision if needed' |
|
452 | 452 | ), |
|
453 | 453 | ) |
|
454 | 454 | ) |
|
455 | 455 | |
|
456 | 456 | register_optimization( |
|
457 | 457 | improvement( |
|
458 | 458 | name=b're-delta-multibase', |
|
459 | 459 | type=OPTIMISATION, |
|
460 | 460 | description=_( |
|
461 | 461 | b'deltas within internal storage will be recalculated ' |
|
462 | 462 | b'against multiple base revision and the smallest ' |
|
463 | 463 | b'difference will be used; the size of the repository may ' |
|
464 | 464 | b'shrink significantly when there are many merges; this ' |
|
465 | 465 | b'optimization will slow down execution in proportion to ' |
|
466 | 466 | b'the number of merges in the repository and the amount ' |
|
467 | 467 | b'of files in the repository; this slow down should not ' |
|
468 | 468 | b'be significant unless there are tens of thousands of ' |
|
469 | 469 | b'files and thousands of merges' |
|
470 | 470 | ), |
|
471 | 471 | upgrademessage=_( |
|
472 | 472 | b'deltas within internal storage will choose an ' |
|
473 | 473 | b'optimal delta by computing deltas against multiple ' |
|
474 | 474 | b'parents; may slow down execution time ' |
|
475 | 475 | b'significantly' |
|
476 | 476 | ), |
|
477 | 477 | ) |
|
478 | 478 | ) |
|
479 | 479 | |
|
480 | 480 | register_optimization( |
|
481 | 481 | improvement( |
|
482 | 482 | name=b're-delta-all', |
|
483 | 483 | type=OPTIMISATION, |
|
484 | 484 | description=_( |
|
485 | 485 | b'deltas within internal storage will always be ' |
|
486 | 486 | b'recalculated without reusing prior deltas; this will ' |
|
487 | 487 | b'likely make execution run several times slower; this ' |
|
488 | 488 | b'optimization is typically not needed' |
|
489 | 489 | ), |
|
490 | 490 | upgrademessage=_( |
|
491 | 491 | b'deltas within internal storage will be fully ' |
|
492 | 492 | b'recomputed; this will likely drastically slow down ' |
|
493 | 493 | b'execution time' |
|
494 | 494 | ), |
|
495 | 495 | ) |
|
496 | 496 | ) |
|
497 | 497 | |
|
498 | 498 | register_optimization( |
|
499 | 499 | improvement( |
|
500 | 500 | name=b're-delta-fulladd', |
|
501 | 501 | type=OPTIMISATION, |
|
502 | 502 | description=_( |
|
503 | 503 | b'every revision will be re-added as if it was new ' |
|
504 | 504 | b'content. It will go through the full storage ' |
|
505 | 505 | b'mechanism giving extensions a chance to process it ' |
|
506 | 506 | b'(eg. lfs). This is similar to "re-delta-all" but even ' |
|
507 | 507 | b'slower since more logic is involved.' |
|
508 | 508 | ), |
|
509 | 509 | upgrademessage=_( |
|
510 | 510 | b'each revision will be added as new content to the ' |
|
511 | 511 | b'internal storage; this will likely drastically slow ' |
|
512 | 512 | b'down execution time, but some extensions might need ' |
|
513 | 513 | b'it' |
|
514 | 514 | ), |
|
515 | 515 | ) |
|
516 | 516 | ) |
|
517 | 517 | |
|
518 | 518 | |
|
519 | 519 | def findoptimizations(repo): |
|
520 | 520 | """Determine optimisation that could be used during upgrade""" |
|
521 | 521 | # These are unconditionally added. There is logic later that figures out |
|
522 | 522 | # which ones to apply. |
|
523 | 523 | return list(ALL_OPTIMISATIONS) |
|
524 | 524 | |
|
525 | 525 | |
|
526 | 526 | def determineactions(repo, deficiencies, sourcereqs, destreqs): |
|
527 | 527 | """Determine upgrade actions that will be performed. |
|
528 | 528 | |
|
529 | 529 | Given a list of improvements as returned by ``finddeficiencies`` and |
|
530 | 530 | ``findoptimizations``, determine the list of upgrade actions that |
|
531 | 531 | will be performed. |
|
532 | 532 | |
|
533 | 533 | The role of this function is to filter improvements if needed, apply |
|
534 | 534 | recommended optimizations from the improvements list that make sense, |
|
535 | 535 | etc. |
|
536 | 536 | |
|
537 | 537 | Returns a list of action names. |
|
538 | 538 | """ |
|
539 | 539 | newactions = [] |
|
540 | 540 | |
|
541 | 541 | for d in deficiencies: |
|
542 | 542 | name = d._requirement |
|
543 | 543 | |
|
544 | 544 | # If the action is a requirement that doesn't show up in the |
|
545 | 545 | # destination requirements, prune the action. |
|
546 | 546 | if name is not None and name not in destreqs: |
|
547 | 547 | continue |
|
548 | 548 | |
|
549 | 549 | newactions.append(d) |
|
550 | 550 | |
|
551 | 551 | # FUTURE consider adding some optimizations here for certain transitions. |
|
552 | 552 | # e.g. adding generaldelta could schedule parent redeltas. |
|
553 | 553 | |
|
554 | 554 | return newactions |
|
555 | 555 | |
|
556 | 556 | |
|
557 | class UpgradeOperation(object): | |
|
558 | """represent the work to be done during an upgrade""" | |
|
559 | ||
|
560 | def __init__(self, requirements, actions, revlogs_to_process): | |
|
561 | self.requirements = requirements | |
|
562 | self.actions = actions | |
|
563 | self.revlogs_to_process = revlogs_to_process | |
|
564 | ||
|
565 | ||
|
557 | 566 | ### Code checking if a repository can got through the upgrade process at all. # |
|
558 | 567 | |
|
559 | 568 | |
|
560 | 569 | def requiredsourcerequirements(repo): |
|
561 | 570 | """Obtain requirements required to be present to upgrade a repo. |
|
562 | 571 | |
|
563 | 572 | An upgrade will not be allowed if the repository doesn't have the |
|
564 | 573 | requirements returned by this function. |
|
565 | 574 | """ |
|
566 | 575 | return { |
|
567 | 576 | # Introduced in Mercurial 0.9.2. |
|
568 | 577 | b'revlogv1', |
|
569 | 578 | # Introduced in Mercurial 0.9.2. |
|
570 | 579 | b'store', |
|
571 | 580 | } |
|
572 | 581 | |
|
573 | 582 | |
|
574 | 583 | def blocksourcerequirements(repo): |
|
575 | 584 | """Obtain requirements that will prevent an upgrade from occurring. |
|
576 | 585 | |
|
577 | 586 | An upgrade cannot be performed if the source repository contains a |
|
578 | 587 | requirements in the returned set. |
|
579 | 588 | """ |
|
580 | 589 | return { |
|
581 | 590 | # The upgrade code does not yet support these experimental features. |
|
582 | 591 | # This is an artificial limitation. |
|
583 | 592 | requirements.TREEMANIFEST_REQUIREMENT, |
|
584 | 593 | # This was a precursor to generaldelta and was never enabled by default. |
|
585 | 594 | # It should (hopefully) not exist in the wild. |
|
586 | 595 | b'parentdelta', |
|
587 | 596 | # Upgrade should operate on the actual store, not the shared link. |
|
588 | 597 | requirements.SHARED_REQUIREMENT, |
|
589 | 598 | } |
|
590 | 599 | |
|
591 | 600 | |
|
592 | 601 | def check_source_requirements(repo): |
|
593 | 602 | """Ensure that no existing requirements prevent the repository upgrade""" |
|
594 | 603 | |
|
595 | 604 | required = requiredsourcerequirements(repo) |
|
596 | 605 | missingreqs = required - repo.requirements |
|
597 | 606 | if missingreqs: |
|
598 | 607 | msg = _(b'cannot upgrade repository; requirement missing: %s') |
|
599 | 608 | missingreqs = b', '.join(sorted(missingreqs)) |
|
600 | 609 | raise error.Abort(msg % missingreqs) |
|
601 | 610 | |
|
602 | 611 | blocking = blocksourcerequirements(repo) |
|
603 | 612 | blockingreqs = blocking & repo.requirements |
|
604 | 613 | if blockingreqs: |
|
605 | 614 | m = _(b'cannot upgrade repository; unsupported source requirement: %s') |
|
606 | 615 | blockingreqs = b', '.join(sorted(blockingreqs)) |
|
607 | 616 | raise error.Abort(m % blockingreqs) |
|
608 | 617 | |
|
609 | 618 | |
|
610 | 619 | ### Verify the validity of the planned requirement changes #################### |
|
611 | 620 | |
|
612 | 621 | |
|
613 | 622 | def supportremovedrequirements(repo): |
|
614 | 623 | """Obtain requirements that can be removed during an upgrade. |
|
615 | 624 | |
|
616 | 625 | If an upgrade were to create a repository that dropped a requirement, |
|
617 | 626 | the dropped requirement must appear in the returned set for the upgrade |
|
618 | 627 | to be allowed. |
|
619 | 628 | """ |
|
620 | 629 | supported = { |
|
621 | 630 | requirements.SPARSEREVLOG_REQUIREMENT, |
|
622 | 631 | requirements.SIDEDATA_REQUIREMENT, |
|
623 | 632 | requirements.COPIESSDC_REQUIREMENT, |
|
624 | 633 | requirements.NODEMAP_REQUIREMENT, |
|
625 | 634 | requirements.SHARESAFE_REQUIREMENT, |
|
626 | 635 | } |
|
627 | 636 | for name in compression.compengines: |
|
628 | 637 | engine = compression.compengines[name] |
|
629 | 638 | if engine.available() and engine.revlogheader(): |
|
630 | 639 | supported.add(b'exp-compression-%s' % name) |
|
631 | 640 | if engine.name() == b'zstd': |
|
632 | 641 | supported.add(b'revlog-compression-zstd') |
|
633 | 642 | return supported |
|
634 | 643 | |
|
635 | 644 | |
|
636 | 645 | def supporteddestrequirements(repo): |
|
637 | 646 | """Obtain requirements that upgrade supports in the destination. |
|
638 | 647 | |
|
639 | 648 | If the result of the upgrade would create requirements not in this set, |
|
640 | 649 | the upgrade is disallowed. |
|
641 | 650 | |
|
642 | 651 | Extensions should monkeypatch this to add their custom requirements. |
|
643 | 652 | """ |
|
644 | 653 | supported = { |
|
645 | 654 | b'dotencode', |
|
646 | 655 | b'fncache', |
|
647 | 656 | b'generaldelta', |
|
648 | 657 | b'revlogv1', |
|
649 | 658 | b'store', |
|
650 | 659 | requirements.SPARSEREVLOG_REQUIREMENT, |
|
651 | 660 | requirements.SIDEDATA_REQUIREMENT, |
|
652 | 661 | requirements.COPIESSDC_REQUIREMENT, |
|
653 | 662 | requirements.NODEMAP_REQUIREMENT, |
|
654 | 663 | requirements.SHARESAFE_REQUIREMENT, |
|
655 | 664 | } |
|
656 | 665 | for name in compression.compengines: |
|
657 | 666 | engine = compression.compengines[name] |
|
658 | 667 | if engine.available() and engine.revlogheader(): |
|
659 | 668 | supported.add(b'exp-compression-%s' % name) |
|
660 | 669 | if engine.name() == b'zstd': |
|
661 | 670 | supported.add(b'revlog-compression-zstd') |
|
662 | 671 | return supported |
|
663 | 672 | |
|
664 | 673 | |
|
665 | 674 | def allowednewrequirements(repo): |
|
666 | 675 | """Obtain requirements that can be added to a repository during upgrade. |
|
667 | 676 | |
|
668 | 677 | This is used to disallow proposed requirements from being added when |
|
669 | 678 | they weren't present before. |
|
670 | 679 | |
|
671 | 680 | We use a list of allowed requirement additions instead of a list of known |
|
672 | 681 | bad additions because the whitelist approach is safer and will prevent |
|
673 | 682 | future, unknown requirements from accidentally being added. |
|
674 | 683 | """ |
|
675 | 684 | supported = { |
|
676 | 685 | b'dotencode', |
|
677 | 686 | b'fncache', |
|
678 | 687 | b'generaldelta', |
|
679 | 688 | requirements.SPARSEREVLOG_REQUIREMENT, |
|
680 | 689 | requirements.SIDEDATA_REQUIREMENT, |
|
681 | 690 | requirements.COPIESSDC_REQUIREMENT, |
|
682 | 691 | requirements.NODEMAP_REQUIREMENT, |
|
683 | 692 | requirements.SHARESAFE_REQUIREMENT, |
|
684 | 693 | } |
|
685 | 694 | for name in compression.compengines: |
|
686 | 695 | engine = compression.compengines[name] |
|
687 | 696 | if engine.available() and engine.revlogheader(): |
|
688 | 697 | supported.add(b'exp-compression-%s' % name) |
|
689 | 698 | if engine.name() == b'zstd': |
|
690 | 699 | supported.add(b'revlog-compression-zstd') |
|
691 | 700 | return supported |
|
692 | 701 | |
|
693 | 702 | |
|
694 | 703 | def check_requirements_changes(repo, new_reqs): |
|
695 | 704 | old_reqs = repo.requirements |
|
696 | 705 | |
|
697 | 706 | support_removal = supportremovedrequirements(repo) |
|
698 | 707 | no_remove_reqs = old_reqs - new_reqs - support_removal |
|
699 | 708 | if no_remove_reqs: |
|
700 | 709 | msg = _(b'cannot upgrade repository; requirement would be removed: %s') |
|
701 | 710 | no_remove_reqs = b', '.join(sorted(no_remove_reqs)) |
|
702 | 711 | raise error.Abort(msg % no_remove_reqs) |
|
703 | 712 | |
|
704 | 713 | support_addition = allowednewrequirements(repo) |
|
705 | 714 | no_add_reqs = new_reqs - old_reqs - support_addition |
|
706 | 715 | if no_add_reqs: |
|
707 | 716 | m = _(b'cannot upgrade repository; do not support adding requirement: ') |
|
708 | 717 | no_add_reqs = b', '.join(sorted(no_add_reqs)) |
|
709 | 718 | raise error.Abort(m + no_add_reqs) |
|
710 | 719 | |
|
711 | 720 | supported = supporteddestrequirements(repo) |
|
712 | 721 | unsupported_reqs = new_reqs - supported |
|
713 | 722 | if unsupported_reqs: |
|
714 | 723 | msg = _( |
|
715 | 724 | b'cannot upgrade repository; do not support destination ' |
|
716 | 725 | b'requirement: %s' |
|
717 | 726 | ) |
|
718 | 727 | unsupported_reqs = b', '.join(sorted(unsupported_reqs)) |
|
719 | 728 | raise error.Abort(msg % unsupported_reqs) |
@@ -1,500 +1,500 b'' | |||
|
1 | 1 | # upgrade.py - functions for in place upgrade of Mercurial repository |
|
2 | 2 | # |
|
3 | 3 | # Copyright (c) 2016-present, Gregory Szorc |
|
4 | 4 | # |
|
5 | 5 | # This software may be used and distributed according to the terms of the |
|
6 | 6 | # GNU General Public License version 2 or any later version. |
|
7 | 7 | |
|
8 | 8 | from __future__ import absolute_import |
|
9 | 9 | |
|
10 | 10 | import stat |
|
11 | 11 | |
|
12 | 12 | from ..i18n import _ |
|
13 | 13 | from ..pycompat import getattr |
|
14 | 14 | from .. import ( |
|
15 | 15 | changelog, |
|
16 | 16 | error, |
|
17 | 17 | filelog, |
|
18 | 18 | manifest, |
|
19 | 19 | metadata, |
|
20 | 20 | pycompat, |
|
21 | 21 | requirements, |
|
22 | 22 | revlog, |
|
23 | 23 | scmutil, |
|
24 | 24 | util, |
|
25 | 25 | vfs as vfsmod, |
|
26 | 26 | ) |
|
27 | 27 | |
|
28 | 28 | |
|
29 | 29 | def _revlogfrompath(repo, path): |
|
30 | 30 | """Obtain a revlog from a repo path. |
|
31 | 31 | |
|
32 | 32 | An instance of the appropriate class is returned. |
|
33 | 33 | """ |
|
34 | 34 | if path == b'00changelog.i': |
|
35 | 35 | return changelog.changelog(repo.svfs) |
|
36 | 36 | elif path.endswith(b'00manifest.i'): |
|
37 | 37 | mandir = path[: -len(b'00manifest.i')] |
|
38 | 38 | return manifest.manifestrevlog(repo.svfs, tree=mandir) |
|
39 | 39 | else: |
|
40 | 40 | # reverse of "/".join(("data", path + ".i")) |
|
41 | 41 | return filelog.filelog(repo.svfs, path[5:-2]) |
|
42 | 42 | |
|
43 | 43 | |
|
44 | 44 | def _copyrevlog(tr, destrepo, oldrl, unencodedname): |
|
45 | 45 | """copy all relevant files for `oldrl` into `destrepo` store |
|
46 | 46 | |
|
47 | 47 | Files are copied "as is" without any transformation. The copy is performed |
|
48 | 48 | without extra checks. Callers are responsible for making sure the copied |
|
49 | 49 | content is compatible with format of the destination repository. |
|
50 | 50 | """ |
|
51 | 51 | oldrl = getattr(oldrl, '_revlog', oldrl) |
|
52 | 52 | newrl = _revlogfrompath(destrepo, unencodedname) |
|
53 | 53 | newrl = getattr(newrl, '_revlog', newrl) |
|
54 | 54 | |
|
55 | 55 | oldvfs = oldrl.opener |
|
56 | 56 | newvfs = newrl.opener |
|
57 | 57 | oldindex = oldvfs.join(oldrl.indexfile) |
|
58 | 58 | newindex = newvfs.join(newrl.indexfile) |
|
59 | 59 | olddata = oldvfs.join(oldrl.datafile) |
|
60 | 60 | newdata = newvfs.join(newrl.datafile) |
|
61 | 61 | |
|
62 | 62 | with newvfs(newrl.indexfile, b'w'): |
|
63 | 63 | pass # create all the directories |
|
64 | 64 | |
|
65 | 65 | util.copyfile(oldindex, newindex) |
|
66 | 66 | copydata = oldrl.opener.exists(oldrl.datafile) |
|
67 | 67 | if copydata: |
|
68 | 68 | util.copyfile(olddata, newdata) |
|
69 | 69 | |
|
70 | 70 | if not ( |
|
71 | 71 | unencodedname.endswith(b'00changelog.i') |
|
72 | 72 | or unencodedname.endswith(b'00manifest.i') |
|
73 | 73 | ): |
|
74 | 74 | destrepo.svfs.fncache.add(unencodedname) |
|
75 | 75 | if copydata: |
|
76 | 76 | destrepo.svfs.fncache.add(unencodedname[:-2] + b'.d') |
|
77 | 77 | |
|
78 | 78 | |
|
79 | 79 | UPGRADE_CHANGELOG = b"changelog" |
|
80 | 80 | UPGRADE_MANIFEST = b"manifest" |
|
81 | 81 | UPGRADE_FILELOGS = b"all-filelogs" |
|
82 | 82 | |
|
83 | 83 | UPGRADE_ALL_REVLOGS = frozenset( |
|
84 | 84 | [UPGRADE_CHANGELOG, UPGRADE_MANIFEST, UPGRADE_FILELOGS] |
|
85 | 85 | ) |
|
86 | 86 | |
|
87 | 87 | |
|
88 | 88 | def getsidedatacompanion(srcrepo, dstrepo): |
|
89 | 89 | sidedatacompanion = None |
|
90 | 90 | removedreqs = srcrepo.requirements - dstrepo.requirements |
|
91 | 91 | addedreqs = dstrepo.requirements - srcrepo.requirements |
|
92 | 92 | if requirements.SIDEDATA_REQUIREMENT in removedreqs: |
|
93 | 93 | |
|
94 | 94 | def sidedatacompanion(rl, rev): |
|
95 | 95 | rl = getattr(rl, '_revlog', rl) |
|
96 | 96 | if rl.flags(rev) & revlog.REVIDX_SIDEDATA: |
|
97 | 97 | return True, (), {}, 0, 0 |
|
98 | 98 | return False, (), {}, 0, 0 |
|
99 | 99 | |
|
100 | 100 | elif requirements.COPIESSDC_REQUIREMENT in addedreqs: |
|
101 | 101 | sidedatacompanion = metadata.getsidedataadder(srcrepo, dstrepo) |
|
102 | 102 | elif requirements.COPIESSDC_REQUIREMENT in removedreqs: |
|
103 | 103 | sidedatacompanion = metadata.getsidedataremover(srcrepo, dstrepo) |
|
104 | 104 | return sidedatacompanion |
|
105 | 105 | |
|
106 | 106 | |
|
107 | 107 | def matchrevlog(revlogfilter, entry): |
|
108 | 108 | """check if a revlog is selected for cloning. |
|
109 | 109 | |
|
110 | 110 | In other words, are there any updates which need to be done on revlog |
|
111 | 111 | or it can be blindly copied. |
|
112 | 112 | |
|
113 | 113 | The store entry is checked against the passed filter""" |
|
114 | 114 | if entry.endswith(b'00changelog.i'): |
|
115 | 115 | return UPGRADE_CHANGELOG in revlogfilter |
|
116 | 116 | elif entry.endswith(b'00manifest.i'): |
|
117 | 117 | return UPGRADE_MANIFEST in revlogfilter |
|
118 | 118 | return UPGRADE_FILELOGS in revlogfilter |
|
119 | 119 | |
|
120 | 120 | |
|
121 | 121 | def _clonerevlogs( |
|
122 | 122 | ui, |
|
123 | 123 | srcrepo, |
|
124 | 124 | dstrepo, |
|
125 | 125 | tr, |
|
126 | 126 | deltareuse, |
|
127 | 127 | forcedeltabothparents, |
|
128 | 128 | revlogs=UPGRADE_ALL_REVLOGS, |
|
129 | 129 | ): |
|
130 | 130 | """Copy revlogs between 2 repos.""" |
|
131 | 131 | revcount = 0 |
|
132 | 132 | srcsize = 0 |
|
133 | 133 | srcrawsize = 0 |
|
134 | 134 | dstsize = 0 |
|
135 | 135 | fcount = 0 |
|
136 | 136 | frevcount = 0 |
|
137 | 137 | fsrcsize = 0 |
|
138 | 138 | frawsize = 0 |
|
139 | 139 | fdstsize = 0 |
|
140 | 140 | mcount = 0 |
|
141 | 141 | mrevcount = 0 |
|
142 | 142 | msrcsize = 0 |
|
143 | 143 | mrawsize = 0 |
|
144 | 144 | mdstsize = 0 |
|
145 | 145 | crevcount = 0 |
|
146 | 146 | csrcsize = 0 |
|
147 | 147 | crawsize = 0 |
|
148 | 148 | cdstsize = 0 |
|
149 | 149 | |
|
150 | 150 | alldatafiles = list(srcrepo.store.walk()) |
|
151 | 151 | |
|
152 | 152 | # Perform a pass to collect metadata. This validates we can open all |
|
153 | 153 | # source files and allows a unified progress bar to be displayed. |
|
154 | 154 | for unencoded, encoded, size in alldatafiles: |
|
155 | 155 | if unencoded.endswith(b'.d'): |
|
156 | 156 | continue |
|
157 | 157 | |
|
158 | 158 | rl = _revlogfrompath(srcrepo, unencoded) |
|
159 | 159 | |
|
160 | 160 | info = rl.storageinfo( |
|
161 | 161 | exclusivefiles=True, |
|
162 | 162 | revisionscount=True, |
|
163 | 163 | trackedsize=True, |
|
164 | 164 | storedsize=True, |
|
165 | 165 | ) |
|
166 | 166 | |
|
167 | 167 | revcount += info[b'revisionscount'] or 0 |
|
168 | 168 | datasize = info[b'storedsize'] or 0 |
|
169 | 169 | rawsize = info[b'trackedsize'] or 0 |
|
170 | 170 | |
|
171 | 171 | srcsize += datasize |
|
172 | 172 | srcrawsize += rawsize |
|
173 | 173 | |
|
174 | 174 | # This is for the separate progress bars. |
|
175 | 175 | if isinstance(rl, changelog.changelog): |
|
176 | 176 | crevcount += len(rl) |
|
177 | 177 | csrcsize += datasize |
|
178 | 178 | crawsize += rawsize |
|
179 | 179 | elif isinstance(rl, manifest.manifestrevlog): |
|
180 | 180 | mcount += 1 |
|
181 | 181 | mrevcount += len(rl) |
|
182 | 182 | msrcsize += datasize |
|
183 | 183 | mrawsize += rawsize |
|
184 | 184 | elif isinstance(rl, filelog.filelog): |
|
185 | 185 | fcount += 1 |
|
186 | 186 | frevcount += len(rl) |
|
187 | 187 | fsrcsize += datasize |
|
188 | 188 | frawsize += rawsize |
|
189 | 189 | else: |
|
190 | 190 | error.ProgrammingError(b'unknown revlog type') |
|
191 | 191 | |
|
192 | 192 | if not revcount: |
|
193 | 193 | return |
|
194 | 194 | |
|
195 | 195 | ui.status( |
|
196 | 196 | _( |
|
197 | 197 | b'migrating %d total revisions (%d in filelogs, %d in manifests, ' |
|
198 | 198 | b'%d in changelog)\n' |
|
199 | 199 | ) |
|
200 | 200 | % (revcount, frevcount, mrevcount, crevcount) |
|
201 | 201 | ) |
|
202 | 202 | ui.status( |
|
203 | 203 | _(b'migrating %s in store; %s tracked data\n') |
|
204 | 204 | % ((util.bytecount(srcsize), util.bytecount(srcrawsize))) |
|
205 | 205 | ) |
|
206 | 206 | |
|
207 | 207 | # Used to keep track of progress. |
|
208 | 208 | progress = None |
|
209 | 209 | |
|
210 | 210 | def oncopiedrevision(rl, rev, node): |
|
211 | 211 | progress.increment() |
|
212 | 212 | |
|
213 | 213 | sidedatacompanion = getsidedatacompanion(srcrepo, dstrepo) |
|
214 | 214 | |
|
215 | 215 | # Do the actual copying. |
|
216 | 216 | # FUTURE this operation can be farmed off to worker processes. |
|
217 | 217 | seen = set() |
|
218 | 218 | for unencoded, encoded, size in alldatafiles: |
|
219 | 219 | if unencoded.endswith(b'.d'): |
|
220 | 220 | continue |
|
221 | 221 | |
|
222 | 222 | oldrl = _revlogfrompath(srcrepo, unencoded) |
|
223 | 223 | |
|
224 | 224 | if isinstance(oldrl, changelog.changelog) and b'c' not in seen: |
|
225 | 225 | ui.status( |
|
226 | 226 | _( |
|
227 | 227 | b'finished migrating %d manifest revisions across %d ' |
|
228 | 228 | b'manifests; change in size: %s\n' |
|
229 | 229 | ) |
|
230 | 230 | % (mrevcount, mcount, util.bytecount(mdstsize - msrcsize)) |
|
231 | 231 | ) |
|
232 | 232 | |
|
233 | 233 | ui.status( |
|
234 | 234 | _( |
|
235 | 235 | b'migrating changelog containing %d revisions ' |
|
236 | 236 | b'(%s in store; %s tracked data)\n' |
|
237 | 237 | ) |
|
238 | 238 | % ( |
|
239 | 239 | crevcount, |
|
240 | 240 | util.bytecount(csrcsize), |
|
241 | 241 | util.bytecount(crawsize), |
|
242 | 242 | ) |
|
243 | 243 | ) |
|
244 | 244 | seen.add(b'c') |
|
245 | 245 | progress = srcrepo.ui.makeprogress( |
|
246 | 246 | _(b'changelog revisions'), total=crevcount |
|
247 | 247 | ) |
|
248 | 248 | elif isinstance(oldrl, manifest.manifestrevlog) and b'm' not in seen: |
|
249 | 249 | ui.status( |
|
250 | 250 | _( |
|
251 | 251 | b'finished migrating %d filelog revisions across %d ' |
|
252 | 252 | b'filelogs; change in size: %s\n' |
|
253 | 253 | ) |
|
254 | 254 | % (frevcount, fcount, util.bytecount(fdstsize - fsrcsize)) |
|
255 | 255 | ) |
|
256 | 256 | |
|
257 | 257 | ui.status( |
|
258 | 258 | _( |
|
259 | 259 | b'migrating %d manifests containing %d revisions ' |
|
260 | 260 | b'(%s in store; %s tracked data)\n' |
|
261 | 261 | ) |
|
262 | 262 | % ( |
|
263 | 263 | mcount, |
|
264 | 264 | mrevcount, |
|
265 | 265 | util.bytecount(msrcsize), |
|
266 | 266 | util.bytecount(mrawsize), |
|
267 | 267 | ) |
|
268 | 268 | ) |
|
269 | 269 | seen.add(b'm') |
|
270 | 270 | if progress: |
|
271 | 271 | progress.complete() |
|
272 | 272 | progress = srcrepo.ui.makeprogress( |
|
273 | 273 | _(b'manifest revisions'), total=mrevcount |
|
274 | 274 | ) |
|
275 | 275 | elif b'f' not in seen: |
|
276 | 276 | ui.status( |
|
277 | 277 | _( |
|
278 | 278 | b'migrating %d filelogs containing %d revisions ' |
|
279 | 279 | b'(%s in store; %s tracked data)\n' |
|
280 | 280 | ) |
|
281 | 281 | % ( |
|
282 | 282 | fcount, |
|
283 | 283 | frevcount, |
|
284 | 284 | util.bytecount(fsrcsize), |
|
285 | 285 | util.bytecount(frawsize), |
|
286 | 286 | ) |
|
287 | 287 | ) |
|
288 | 288 | seen.add(b'f') |
|
289 | 289 | if progress: |
|
290 | 290 | progress.complete() |
|
291 | 291 | progress = srcrepo.ui.makeprogress( |
|
292 | 292 | _(b'file revisions'), total=frevcount |
|
293 | 293 | ) |
|
294 | 294 | |
|
295 | 295 | if matchrevlog(revlogs, unencoded): |
|
296 | 296 | ui.note( |
|
297 | 297 | _(b'cloning %d revisions from %s\n') % (len(oldrl), unencoded) |
|
298 | 298 | ) |
|
299 | 299 | newrl = _revlogfrompath(dstrepo, unencoded) |
|
300 | 300 | oldrl.clone( |
|
301 | 301 | tr, |
|
302 | 302 | newrl, |
|
303 | 303 | addrevisioncb=oncopiedrevision, |
|
304 | 304 | deltareuse=deltareuse, |
|
305 | 305 | forcedeltabothparents=forcedeltabothparents, |
|
306 | 306 | sidedatacompanion=sidedatacompanion, |
|
307 | 307 | ) |
|
308 | 308 | else: |
|
309 | 309 | msg = _(b'blindly copying %s containing %i revisions\n') |
|
310 | 310 | ui.note(msg % (unencoded, len(oldrl))) |
|
311 | 311 | _copyrevlog(tr, dstrepo, oldrl, unencoded) |
|
312 | 312 | |
|
313 | 313 | newrl = _revlogfrompath(dstrepo, unencoded) |
|
314 | 314 | |
|
315 | 315 | info = newrl.storageinfo(storedsize=True) |
|
316 | 316 | datasize = info[b'storedsize'] or 0 |
|
317 | 317 | |
|
318 | 318 | dstsize += datasize |
|
319 | 319 | |
|
320 | 320 | if isinstance(newrl, changelog.changelog): |
|
321 | 321 | cdstsize += datasize |
|
322 | 322 | elif isinstance(newrl, manifest.manifestrevlog): |
|
323 | 323 | mdstsize += datasize |
|
324 | 324 | else: |
|
325 | 325 | fdstsize += datasize |
|
326 | 326 | |
|
327 | 327 | progress.complete() |
|
328 | 328 | |
|
329 | 329 | ui.status( |
|
330 | 330 | _( |
|
331 | 331 | b'finished migrating %d changelog revisions; change in size: ' |
|
332 | 332 | b'%s\n' |
|
333 | 333 | ) |
|
334 | 334 | % (crevcount, util.bytecount(cdstsize - csrcsize)) |
|
335 | 335 | ) |
|
336 | 336 | |
|
337 | 337 | ui.status( |
|
338 | 338 | _( |
|
339 | 339 | b'finished migrating %d total revisions; total change in store ' |
|
340 | 340 | b'size: %s\n' |
|
341 | 341 | ) |
|
342 | 342 | % (revcount, util.bytecount(dstsize - srcsize)) |
|
343 | 343 | ) |
|
344 | 344 | |
|
345 | 345 | |
|
346 | 346 | def _filterstorefile(srcrepo, dstrepo, requirements, path, mode, st): |
|
347 | 347 | """Determine whether to copy a store file during upgrade. |
|
348 | 348 | |
|
349 | 349 | This function is called when migrating store files from ``srcrepo`` to |
|
350 | 350 | ``dstrepo`` as part of upgrading a repository. |
|
351 | 351 | |
|
352 | 352 | Args: |
|
353 | 353 | srcrepo: repo we are copying from |
|
354 | 354 | dstrepo: repo we are copying to |
|
355 | 355 | requirements: set of requirements for ``dstrepo`` |
|
356 | 356 | path: store file being examined |
|
357 | 357 | mode: the ``ST_MODE`` file type of ``path`` |
|
358 | 358 | st: ``stat`` data structure for ``path`` |
|
359 | 359 | |
|
360 | 360 | Function should return ``True`` if the file is to be copied. |
|
361 | 361 | """ |
|
362 | 362 | # Skip revlogs. |
|
363 | 363 | if path.endswith((b'.i', b'.d', b'.n', b'.nd')): |
|
364 | 364 | return False |
|
365 | 365 | # Skip transaction related files. |
|
366 | 366 | if path.startswith(b'undo'): |
|
367 | 367 | return False |
|
368 | 368 | # Only copy regular files. |
|
369 | 369 | if mode != stat.S_IFREG: |
|
370 | 370 | return False |
|
371 | 371 | # Skip other skipped files. |
|
372 | 372 | if path in (b'lock', b'fncache'): |
|
373 | 373 | return False |
|
374 | 374 | |
|
375 | 375 | return True |
|
376 | 376 | |
|
377 | 377 | |
|
378 | 378 | def _finishdatamigration(ui, srcrepo, dstrepo, requirements): |
|
379 | 379 | """Hook point for extensions to perform additional actions during upgrade. |
|
380 | 380 | |
|
381 | 381 | This function is called after revlogs and store files have been copied but |
|
382 | 382 | before the new store is swapped into the original location. |
|
383 | 383 | """ |
|
384 | 384 | |
|
385 | 385 | |
|
386 | def upgrade( | |
|
387 | ui, srcrepo, dstrepo, requirements, actions, revlogs=UPGRADE_ALL_REVLOGS | |
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388 | ): | |
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386 | def upgrade(ui, srcrepo, dstrepo, upgrade_op): | |
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389 | 387 | """Do the low-level work of upgrading a repository. |
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390 | 388 | |
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391 | 389 | The upgrade is effectively performed as a copy between a source |
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392 | 390 | repository and a temporary destination repository. |
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393 | 391 | |
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394 | 392 | The source repository is unmodified for as long as possible so the |
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395 | 393 | upgrade can abort at any time without causing loss of service for |
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396 | 394 | readers and without corrupting the source repository. |
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397 | 395 | """ |
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398 | 396 | assert srcrepo.currentwlock() |
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399 | 397 | assert dstrepo.currentwlock() |
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400 | 398 | |
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401 | 399 | ui.status( |
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402 | 400 | _( |
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403 | 401 | b'(it is safe to interrupt this process any time before ' |
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404 | 402 | b'data migration completes)\n' |
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405 | 403 | ) |
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406 | 404 | ) |
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407 | 405 | |
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408 | if b're-delta-all' in actions: | |
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406 | if b're-delta-all' in upgrade_op.actions: | |
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409 | 407 | deltareuse = revlog.revlog.DELTAREUSENEVER |
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410 | elif b're-delta-parent' in actions: | |
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408 | elif b're-delta-parent' in upgrade_op.actions: | |
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411 | 409 | deltareuse = revlog.revlog.DELTAREUSESAMEREVS |
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412 | elif b're-delta-multibase' in actions: | |
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410 | elif b're-delta-multibase' in upgrade_op.actions: | |
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413 | 411 | deltareuse = revlog.revlog.DELTAREUSESAMEREVS |
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414 | elif b're-delta-fulladd' in actions: | |
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412 | elif b're-delta-fulladd' in upgrade_op.actions: | |
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415 | 413 | deltareuse = revlog.revlog.DELTAREUSEFULLADD |
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416 | 414 | else: |
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417 | 415 | deltareuse = revlog.revlog.DELTAREUSEALWAYS |
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418 | 416 | |
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419 | 417 | with dstrepo.transaction(b'upgrade') as tr: |
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420 | 418 | _clonerevlogs( |
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421 | 419 | ui, |
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422 | 420 | srcrepo, |
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423 | 421 | dstrepo, |
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424 | 422 | tr, |
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425 | 423 | deltareuse, |
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426 | b're-delta-multibase' in actions, | |
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427 | revlogs=revlogs, | |
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424 | b're-delta-multibase' in upgrade_op.actions, | |
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425 | revlogs=upgrade_op.revlogs_to_process, | |
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428 | 426 | ) |
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429 | 427 | |
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430 | 428 | # Now copy other files in the store directory. |
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431 | 429 | # The sorted() makes execution deterministic. |
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432 | 430 | for p, kind, st in sorted(srcrepo.store.vfs.readdir(b'', stat=True)): |
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433 | if not _filterstorefile(srcrepo, dstrepo, requirements, p, kind, st): | |
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431 | if not _filterstorefile( | |
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432 | srcrepo, dstrepo, upgrade_op.requirements, p, kind, st | |
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433 | ): | |
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434 | 434 | continue |
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435 | 435 | |
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436 | 436 | srcrepo.ui.status(_(b'copying %s\n') % p) |
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437 | 437 | src = srcrepo.store.rawvfs.join(p) |
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438 | 438 | dst = dstrepo.store.rawvfs.join(p) |
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439 | 439 | util.copyfile(src, dst, copystat=True) |
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440 | 440 | |
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441 | 441 | _finishdatamigration(ui, srcrepo, dstrepo, requirements) |
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442 | 442 | |
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443 | 443 | ui.status(_(b'data fully migrated to temporary repository\n')) |
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444 | 444 | |
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445 | 445 | backuppath = pycompat.mkdtemp(prefix=b'upgradebackup.', dir=srcrepo.path) |
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446 | 446 | backupvfs = vfsmod.vfs(backuppath) |
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447 | 447 | |
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448 | 448 | # Make a backup of requires file first, as it is the first to be modified. |
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449 | 449 | util.copyfile(srcrepo.vfs.join(b'requires'), backupvfs.join(b'requires')) |
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450 | 450 | |
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451 | 451 | # We install an arbitrary requirement that clients must not support |
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452 | 452 | # as a mechanism to lock out new clients during the data swap. This is |
|
453 | 453 | # better than allowing a client to continue while the repository is in |
|
454 | 454 | # an inconsistent state. |
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455 | 455 | ui.status( |
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456 | 456 | _( |
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457 | 457 | b'marking source repository as being upgraded; clients will be ' |
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458 | 458 | b'unable to read from repository\n' |
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459 | 459 | ) |
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460 | 460 | ) |
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461 | 461 | scmutil.writereporequirements( |
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462 | 462 | srcrepo, srcrepo.requirements | {b'upgradeinprogress'} |
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463 | 463 | ) |
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464 | 464 | |
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465 | 465 | ui.status(_(b'starting in-place swap of repository data\n')) |
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466 | 466 | ui.status(_(b'replaced files will be backed up at %s\n') % backuppath) |
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467 | 467 | |
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468 | 468 | # Now swap in the new store directory. Doing it as a rename should make |
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469 | 469 | # the operation nearly instantaneous and atomic (at least in well-behaved |
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470 | 470 | # environments). |
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471 | 471 | ui.status(_(b'replacing store...\n')) |
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472 | 472 | tstart = util.timer() |
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473 | 473 | util.rename(srcrepo.spath, backupvfs.join(b'store')) |
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474 | 474 | util.rename(dstrepo.spath, srcrepo.spath) |
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475 | 475 | elapsed = util.timer() - tstart |
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476 | 476 | ui.status( |
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477 | 477 | _( |
|
478 | 478 | b'store replacement complete; repository was inconsistent for ' |
|
479 | 479 | b'%0.1fs\n' |
|
480 | 480 | ) |
|
481 | 481 | % elapsed |
|
482 | 482 | ) |
|
483 | 483 | |
|
484 | 484 | # We first write the requirements file. Any new requirements will lock |
|
485 | 485 | # out legacy clients. |
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486 | 486 | ui.status( |
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487 | 487 | _( |
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488 | 488 | b'finalizing requirements file and making repository readable ' |
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489 | 489 | b'again\n' |
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490 | 490 | ) |
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491 | 491 | ) |
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492 | scmutil.writereporequirements(srcrepo, requirements) | |
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492 | scmutil.writereporequirements(srcrepo, upgrade_op.requirements) | |
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493 | 493 | |
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494 | 494 | # The lock file from the old store won't be removed because nothing has a |
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495 | 495 | # reference to its new location. So clean it up manually. Alternatively, we |
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496 | 496 | # could update srcrepo.svfs and other variables to point to the new |
|
497 | 497 | # location. This is simpler. |
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498 | 498 | backupvfs.unlink(b'store/lock') |
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499 | 499 | |
|
500 | 500 | return backuppath |
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