Mercurial > hg
annotate hgext/sqlitestore.py @ 47441:e33c6dd346e7
localrepo: introduce a clone_requirements function
This function take a source repository and return a relevant set of
requirements that should be used by a copy clone.
This will help make the creation of the destination repository during copy
clone simpler.
Differential Revision: https://phab.mercurial-scm.org/D10849
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Wed, 09 Jun 2021 01:10:26 +0200 |
parents | 119790e1c67c |
children | 6000f5b25c9b |
rev | line source |
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1 # sqlitestore.py - Storage backend that uses SQLite |
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2 # |
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3 # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 """store repository data in SQLite (EXPERIMENTAL) |
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9 |
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10 The sqlitestore extension enables the storage of repository data in SQLite. |
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11 |
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12 This extension is HIGHLY EXPERIMENTAL. There are NO BACKWARDS COMPATIBILITY |
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13 GUARANTEES. This means that repositories created with this extension may |
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14 only be usable with the exact version of this extension/Mercurial that was |
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15 used. The extension attempts to enforce this in order to prevent repository |
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16 corruption. |
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17 |
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18 In addition, several features are not yet supported or have known bugs: |
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19 |
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20 * Only some data is stored in SQLite. Changeset, manifest, and other repository |
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21 data is not yet stored in SQLite. |
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22 * Transactions are not robust. If the process is aborted at the right time |
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23 during transaction close/rollback, the repository could be in an inconsistent |
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24 state. This problem will diminish once all repository data is tracked by |
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25 SQLite. |
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26 * Bundle repositories do not work (the ability to use e.g. |
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27 `hg -R <bundle-file> log` to automatically overlay a bundle on top of the |
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28 existing repository). |
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29 * Various other features don't work. |
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30 |
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31 This extension should work for basic clone/pull, update, and commit workflows. |
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32 Some history rewriting operations may fail due to lack of support for bundle |
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33 repositories. |
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34 |
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35 To use, activate the extension and set the ``storage.new-repo-backend`` config |
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36 option to ``sqlite`` to enable new repositories to use SQLite for storage. |
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37 """ |
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38 |
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39 # To run the test suite with repos using SQLite by default, execute the |
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40 # following: |
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41 # |
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42 # HGREPOFEATURES="sqlitestore" run-tests.py \ |
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43 # --extra-config-opt extensions.sqlitestore= \ |
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44 # --extra-config-opt storage.new-repo-backend=sqlite |
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45 |
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46 from __future__ import absolute_import |
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47 |
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48 import sqlite3 |
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49 import struct |
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50 import threading |
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51 import zlib |
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52 |
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53 from mercurial.i18n import _ |
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54 from mercurial.node import ( |
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55 nullrev, |
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56 sha1nodeconstants, |
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57 short, |
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58 ) |
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59 from mercurial.thirdparty import attr |
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60 from mercurial import ( |
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61 ancestor, |
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62 dagop, |
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63 encoding, |
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64 error, |
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65 extensions, |
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66 localrepo, |
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67 mdiff, |
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68 pycompat, |
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69 registrar, |
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70 requirements, |
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71 util, |
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72 verify, |
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73 ) |
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74 from mercurial.interfaces import ( |
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75 repository, |
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76 util as interfaceutil, |
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77 ) |
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78 from mercurial.utils import ( |
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79 hashutil, |
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80 storageutil, |
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81 ) |
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82 |
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83 try: |
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84 from mercurial import zstd |
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85 |
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86 zstd.__version__ |
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87 except ImportError: |
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88 zstd = None |
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89 |
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90 configtable = {} |
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91 configitem = registrar.configitem(configtable) |
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92 |
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93 # experimental config: storage.sqlite.compression |
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94 configitem( |
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95 b'storage', |
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96 b'sqlite.compression', |
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97 default=b'zstd' if zstd else b'zlib', |
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98 experimental=True, |
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99 ) |
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100 |
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101 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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102 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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103 # be specifying the version(s) of Mercurial they are tested with, or |
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104 # leave the attribute unspecified. |
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105 testedwith = b'ships-with-hg-core' |
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106 |
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107 REQUIREMENT = b'exp-sqlite-001' |
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108 REQUIREMENT_ZSTD = b'exp-sqlite-comp-001=zstd' |
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109 REQUIREMENT_ZLIB = b'exp-sqlite-comp-001=zlib' |
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110 REQUIREMENT_NONE = b'exp-sqlite-comp-001=none' |
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111 REQUIREMENT_SHALLOW_FILES = b'exp-sqlite-shallow-files' |
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112 |
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113 CURRENT_SCHEMA_VERSION = 1 |
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114 |
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115 COMPRESSION_NONE = 1 |
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116 COMPRESSION_ZSTD = 2 |
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117 COMPRESSION_ZLIB = 3 |
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118 |
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119 FLAG_CENSORED = 1 |
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120 FLAG_MISSING_P1 = 2 |
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121 FLAG_MISSING_P2 = 4 |
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122 |
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123 CREATE_SCHEMA = [ |
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124 # Deltas are stored as content-indexed blobs. |
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125 # compression column holds COMPRESSION_* constant for how the |
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126 # delta is encoded. |
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127 'CREATE TABLE delta (' |
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128 ' id INTEGER PRIMARY KEY, ' |
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129 ' compression INTEGER NOT NULL, ' |
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130 ' hash BLOB UNIQUE ON CONFLICT ABORT, ' |
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131 ' delta BLOB NOT NULL ' |
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132 ')', |
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133 # Tracked paths are denormalized to integers to avoid redundant |
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134 # storage of the path name. |
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135 'CREATE TABLE filepath (' |
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136 ' id INTEGER PRIMARY KEY, ' |
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137 ' path BLOB NOT NULL ' |
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138 ')', |
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139 'CREATE UNIQUE INDEX filepath_path ON filepath (path)', |
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140 # We have a single table for all file revision data. |
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141 # Each file revision is uniquely described by a (path, rev) and |
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142 # (path, node). |
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143 # |
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144 # Revision data is stored as a pointer to the delta producing this |
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145 # revision and the file revision whose delta should be applied before |
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146 # that one. One can reconstruct the delta chain by recursively following |
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147 # the delta base revision pointers until one encounters NULL. |
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148 # |
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149 # flags column holds bitwise integer flags controlling storage options. |
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150 # These flags are defined by the FLAG_* constants. |
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151 'CREATE TABLE fileindex (' |
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152 ' id INTEGER PRIMARY KEY, ' |
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153 ' pathid INTEGER REFERENCES filepath(id), ' |
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154 ' revnum INTEGER NOT NULL, ' |
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155 ' p1rev INTEGER NOT NULL, ' |
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156 ' p2rev INTEGER NOT NULL, ' |
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157 ' linkrev INTEGER NOT NULL, ' |
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158 ' flags INTEGER NOT NULL, ' |
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159 ' deltaid INTEGER REFERENCES delta(id), ' |
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160 ' deltabaseid INTEGER REFERENCES fileindex(id), ' |
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161 ' node BLOB NOT NULL ' |
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162 ')', |
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163 'CREATE UNIQUE INDEX fileindex_pathrevnum ' |
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164 ' ON fileindex (pathid, revnum)', |
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165 'CREATE UNIQUE INDEX fileindex_pathnode ON fileindex (pathid, node)', |
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166 # Provide a view over all file data for convenience. |
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167 'CREATE VIEW filedata AS ' |
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168 'SELECT ' |
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169 ' fileindex.id AS id, ' |
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170 ' filepath.id AS pathid, ' |
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171 ' filepath.path AS path, ' |
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172 ' fileindex.revnum AS revnum, ' |
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173 ' fileindex.node AS node, ' |
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174 ' fileindex.p1rev AS p1rev, ' |
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175 ' fileindex.p2rev AS p2rev, ' |
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176 ' fileindex.linkrev AS linkrev, ' |
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177 ' fileindex.flags AS flags, ' |
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178 ' fileindex.deltaid AS deltaid, ' |
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179 ' fileindex.deltabaseid AS deltabaseid ' |
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180 'FROM filepath, fileindex ' |
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181 'WHERE fileindex.pathid=filepath.id', |
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182 'PRAGMA user_version=%d' % CURRENT_SCHEMA_VERSION, |
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183 ] |
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184 |
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185 |
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186 def resolvedeltachain(db, pathid, node, revisioncache, stoprids, zstddctx=None): |
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187 """Resolve a delta chain for a file node.""" |
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188 |
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189 # TODO the "not in ({stops})" here is possibly slowing down the query |
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190 # because it needs to perform the lookup on every recursive invocation. |
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191 # This could possibly be faster if we created a temporary query with |
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192 # baseid "poisoned" to null and limited the recursive filter to |
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193 # "is not null". |
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194 res = db.execute( |
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195 'WITH RECURSIVE ' |
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196 ' deltachain(deltaid, baseid) AS (' |
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197 ' SELECT deltaid, deltabaseid FROM fileindex ' |
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198 ' WHERE pathid=? AND node=? ' |
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199 ' UNION ALL ' |
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200 ' SELECT fileindex.deltaid, deltabaseid ' |
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201 ' FROM fileindex, deltachain ' |
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202 ' WHERE ' |
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203 ' fileindex.id=deltachain.baseid ' |
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204 ' AND deltachain.baseid IS NOT NULL ' |
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205 ' AND fileindex.id NOT IN ({stops}) ' |
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206 ' ) ' |
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207 'SELECT deltachain.baseid, compression, delta ' |
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208 'FROM deltachain, delta ' |
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209 'WHERE delta.id=deltachain.deltaid'.format( |
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210 stops=','.join(['?'] * len(stoprids)) |
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211 ), |
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212 tuple([pathid, node] + list(stoprids.keys())), |
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213 ) |
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214 |
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215 deltas = [] |
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216 lastdeltabaseid = None |
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217 |
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218 for deltabaseid, compression, delta in res: |
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219 lastdeltabaseid = deltabaseid |
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220 |
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221 if compression == COMPRESSION_ZSTD: |
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222 delta = zstddctx.decompress(delta) |
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223 elif compression == COMPRESSION_NONE: |
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224 delta = delta |
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225 elif compression == COMPRESSION_ZLIB: |
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226 delta = zlib.decompress(delta) |
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227 else: |
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228 raise SQLiteStoreError( |
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229 b'unhandled compression type: %d' % compression |
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230 ) |
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231 |
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232 deltas.append(delta) |
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233 |
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234 if lastdeltabaseid in stoprids: |
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235 basetext = revisioncache[stoprids[lastdeltabaseid]] |
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236 else: |
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237 basetext = deltas.pop() |
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238 |
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239 deltas.reverse() |
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240 fulltext = mdiff.patches(basetext, deltas) |
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241 |
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242 # SQLite returns buffer instances for blob columns on Python 2. This |
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243 # type can propagate through the delta application layer. Because |
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244 # downstream callers assume revisions are bytes, cast as needed. |
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245 if not isinstance(fulltext, bytes): |
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246 fulltext = bytes(delta) |
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247 |
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248 return fulltext |
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249 |
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250 |
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251 def insertdelta(db, compression, hash, delta): |
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252 try: |
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253 return db.execute( |
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254 'INSERT INTO delta (compression, hash, delta) VALUES (?, ?, ?)', |
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255 (compression, hash, delta), |
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256 ).lastrowid |
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257 except sqlite3.IntegrityError: |
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258 return db.execute( |
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259 'SELECT id FROM delta WHERE hash=?', (hash,) |
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260 ).fetchone()[0] |
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261 |
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262 |
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263 class SQLiteStoreError(error.StorageError): |
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264 pass |
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265 |
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266 |
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267 @attr.s |
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268 class revisionentry(object): |
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269 rid = attr.ib() |
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270 rev = attr.ib() |
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271 node = attr.ib() |
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272 p1rev = attr.ib() |
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273 p2rev = attr.ib() |
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274 p1node = attr.ib() |
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275 p2node = attr.ib() |
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276 linkrev = attr.ib() |
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277 flags = attr.ib() |
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278 |
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279 |
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280 @interfaceutil.implementer(repository.irevisiondelta) |
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281 @attr.s(slots=True) |
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282 class sqliterevisiondelta(object): |
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283 node = attr.ib() |
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284 p1node = attr.ib() |
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285 p2node = attr.ib() |
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286 basenode = attr.ib() |
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287 flags = attr.ib() |
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288 baserevisionsize = attr.ib() |
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289 revision = attr.ib() |
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290 delta = attr.ib() |
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291 sidedata = attr.ib() |
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292 protocol_flags = attr.ib() |
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293 linknode = attr.ib(default=None) |
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294 |
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295 |
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296 @interfaceutil.implementer(repository.iverifyproblem) |
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297 @attr.s(frozen=True) |
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298 class sqliteproblem(object): |
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299 warning = attr.ib(default=None) |
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300 error = attr.ib(default=None) |
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301 node = attr.ib(default=None) |
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302 |
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303 |
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304 @interfaceutil.implementer(repository.ifilestorage) |
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305 class sqlitefilestore(object): |
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306 """Implements storage for an individual tracked path.""" |
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307 |
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308 def __init__(self, db, path, compression): |
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309 self.nullid = sha1nodeconstants.nullid |
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310 self._db = db |
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311 self._path = path |
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312 |
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313 self._pathid = None |
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314 |
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315 # revnum -> node |
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316 self._revtonode = {} |
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317 # node -> revnum |
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318 self._nodetorev = {} |
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319 # node -> data structure |
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320 self._revisions = {} |
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321 |
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322 self._revisioncache = util.lrucachedict(10) |
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323 |
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324 self._compengine = compression |
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325 |
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326 if compression == b'zstd': |
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327 self._cctx = zstd.ZstdCompressor(level=3) |
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328 self._dctx = zstd.ZstdDecompressor() |
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329 else: |
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330 self._cctx = None |
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331 self._dctx = None |
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332 |
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333 self._refreshindex() |
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334 |
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335 def _refreshindex(self): |
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336 self._revtonode = {} |
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337 self._nodetorev = {} |
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338 self._revisions = {} |
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339 |
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340 res = list( |
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341 self._db.execute( |
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342 'SELECT id FROM filepath WHERE path=?', (self._path,) |
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343 ) |
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344 ) |
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345 |
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346 if not res: |
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347 self._pathid = None |
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348 return |
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349 |
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350 self._pathid = res[0][0] |
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351 |
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352 res = self._db.execute( |
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353 'SELECT id, revnum, node, p1rev, p2rev, linkrev, flags ' |
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354 'FROM fileindex ' |
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355 'WHERE pathid=? ' |
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356 'ORDER BY revnum ASC', |
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357 (self._pathid,), |
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358 ) |
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359 |
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360 for i, row in enumerate(res): |
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361 rid, rev, node, p1rev, p2rev, linkrev, flags = row |
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362 |
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363 if i != rev: |
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364 raise SQLiteStoreError( |
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365 _(b'sqlite database has inconsistent revision numbers') |
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366 ) |
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367 |
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368 if p1rev == nullrev: |
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369 p1node = sha1nodeconstants.nullid |
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370 else: |
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371 p1node = self._revtonode[p1rev] |
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372 |
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373 if p2rev == nullrev: |
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374 p2node = sha1nodeconstants.nullid |
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375 else: |
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376 p2node = self._revtonode[p2rev] |
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377 |
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378 entry = revisionentry( |
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379 rid=rid, |
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380 rev=rev, |
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381 node=node, |
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382 p1rev=p1rev, |
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383 p2rev=p2rev, |
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384 p1node=p1node, |
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385 p2node=p2node, |
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386 linkrev=linkrev, |
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387 flags=flags, |
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388 ) |
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389 |
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390 self._revtonode[rev] = node |
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391 self._nodetorev[node] = rev |
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392 self._revisions[node] = entry |
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393 |
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394 # Start of ifileindex interface. |
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395 |
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396 def __len__(self): |
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397 return len(self._revisions) |
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398 |
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399 def __iter__(self): |
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400 return iter(pycompat.xrange(len(self._revisions))) |
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401 |
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402 def hasnode(self, node): |
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403 if node == sha1nodeconstants.nullid: |
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404 return False |
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405 |
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406 return node in self._nodetorev |
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407 |
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408 def revs(self, start=0, stop=None): |
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409 return storageutil.iterrevs( |
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410 len(self._revisions), start=start, stop=stop |
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411 ) |
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412 |
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413 def parents(self, node): |
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414 if node == sha1nodeconstants.nullid: |
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415 return sha1nodeconstants.nullid, sha1nodeconstants.nullid |
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416 |
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417 if node not in self._revisions: |
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418 raise error.LookupError(node, self._path, _(b'no node')) |
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419 |
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420 entry = self._revisions[node] |
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421 return entry.p1node, entry.p2node |
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422 |
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423 def parentrevs(self, rev): |
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424 if rev == nullrev: |
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425 return nullrev, nullrev |
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426 |
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427 if rev not in self._revtonode: |
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428 raise IndexError(rev) |
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429 |
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430 entry = self._revisions[self._revtonode[rev]] |
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431 return entry.p1rev, entry.p2rev |
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432 |
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433 def rev(self, node): |
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434 if node == sha1nodeconstants.nullid: |
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435 return nullrev |
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436 |
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437 if node not in self._nodetorev: |
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438 raise error.LookupError(node, self._path, _(b'no node')) |
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439 |
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440 return self._nodetorev[node] |
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441 |
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442 def node(self, rev): |
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443 if rev == nullrev: |
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444 return sha1nodeconstants.nullid |
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445 |
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446 if rev not in self._revtonode: |
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447 raise IndexError(rev) |
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448 |
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449 return self._revtonode[rev] |
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450 |
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451 def lookup(self, node): |
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452 return storageutil.fileidlookup(self, node, self._path) |
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453 |
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454 def linkrev(self, rev): |
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455 if rev == nullrev: |
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456 return nullrev |
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457 |
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458 if rev not in self._revtonode: |
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459 raise IndexError(rev) |
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460 |
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461 entry = self._revisions[self._revtonode[rev]] |
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462 return entry.linkrev |
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463 |
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464 def iscensored(self, rev): |
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465 if rev == nullrev: |
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466 return False |
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467 |
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468 if rev not in self._revtonode: |
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469 raise IndexError(rev) |
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470 |
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471 return self._revisions[self._revtonode[rev]].flags & FLAG_CENSORED |
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472 |
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473 def commonancestorsheads(self, node1, node2): |
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474 rev1 = self.rev(node1) |
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475 rev2 = self.rev(node2) |
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476 |
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477 ancestors = ancestor.commonancestorsheads(self.parentrevs, rev1, rev2) |
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478 return pycompat.maplist(self.node, ancestors) |
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479 |
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480 def descendants(self, revs): |
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481 # TODO we could implement this using a recursive SQL query, which |
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482 # might be faster. |
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483 return dagop.descendantrevs(revs, self.revs, self.parentrevs) |
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484 |
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485 def heads(self, start=None, stop=None): |
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486 if start is None and stop is None: |
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487 if not len(self): |
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488 return [sha1nodeconstants.nullid] |
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489 |
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490 startrev = self.rev(start) if start is not None else nullrev |
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491 stoprevs = {self.rev(n) for n in stop or []} |
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492 |
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493 revs = dagop.headrevssubset( |
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494 self.revs, self.parentrevs, startrev=startrev, stoprevs=stoprevs |
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495 ) |
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496 |
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497 return [self.node(rev) for rev in revs] |
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498 |
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499 def children(self, node): |
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500 rev = self.rev(node) |
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501 |
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502 res = self._db.execute( |
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503 'SELECT' |
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504 ' node ' |
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505 ' FROM filedata ' |
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506 ' WHERE path=? AND (p1rev=? OR p2rev=?) ' |
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507 ' ORDER BY revnum ASC', |
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508 (self._path, rev, rev), |
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509 ) |
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510 |
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511 return [row[0] for row in res] |
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512 |
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513 # End of ifileindex interface. |
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514 |
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515 # Start of ifiledata interface. |
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516 |
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517 def size(self, rev): |
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518 if rev == nullrev: |
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519 return 0 |
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520 |
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521 if rev not in self._revtonode: |
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522 raise IndexError(rev) |
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523 |
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524 node = self._revtonode[rev] |
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525 |
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526 if self.renamed(node): |
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527 return len(self.read(node)) |
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528 |
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529 return len(self.revision(node)) |
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530 |
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531 def revision(self, node, raw=False, _verifyhash=True): |
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532 if node in (sha1nodeconstants.nullid, nullrev): |
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533 return b'' |
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534 |
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535 if isinstance(node, int): |
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536 node = self.node(node) |
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537 |
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538 if node not in self._nodetorev: |
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539 raise error.LookupError(node, self._path, _(b'no node')) |
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540 |
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541 if node in self._revisioncache: |
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542 return self._revisioncache[node] |
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543 |
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544 # Because we have a fulltext revision cache, we are able to |
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545 # short-circuit delta chain traversal and decompression as soon as |
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546 # we encounter a revision in the cache. |
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547 |
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548 stoprids = {self._revisions[n].rid: n for n in self._revisioncache} |
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549 |
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550 if not stoprids: |
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551 stoprids[-1] = None |
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552 |
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553 fulltext = resolvedeltachain( |
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554 self._db, |
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555 self._pathid, |
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556 node, |
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557 self._revisioncache, |
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558 stoprids, |
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559 zstddctx=self._dctx, |
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560 ) |
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561 |
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562 # Don't verify hashes if parent nodes were rewritten, as the hash |
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563 # wouldn't verify. |
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564 if self._revisions[node].flags & (FLAG_MISSING_P1 | FLAG_MISSING_P2): |
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565 _verifyhash = False |
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566 |
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567 if _verifyhash: |
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568 self._checkhash(fulltext, node) |
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569 self._revisioncache[node] = fulltext |
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570 |
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571 return fulltext |
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572 |
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573 def rawdata(self, *args, **kwargs): |
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574 return self.revision(*args, **kwargs) |
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575 |
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576 def read(self, node): |
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577 return storageutil.filtermetadata(self.revision(node)) |
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578 |
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579 def renamed(self, node): |
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580 return storageutil.filerevisioncopied(self, node) |
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581 |
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582 def cmp(self, node, fulltext): |
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583 return not storageutil.filedataequivalent(self, node, fulltext) |
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584 |
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585 def emitrevisions( |
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586 self, |
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587 nodes, |
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588 nodesorder=None, |
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589 revisiondata=False, |
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590 assumehaveparentrevisions=False, |
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591 deltamode=repository.CG_DELTAMODE_STD, |
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592 sidedata_helpers=None, |
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593 ): |
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594 if nodesorder not in (b'nodes', b'storage', b'linear', None): |
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595 raise error.ProgrammingError( |
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596 b'unhandled value for nodesorder: %s' % nodesorder |
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597 ) |
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598 |
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599 nodes = [n for n in nodes if n != sha1nodeconstants.nullid] |
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600 |
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601 if not nodes: |
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602 return |
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603 |
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604 # TODO perform in a single query. |
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605 res = self._db.execute( |
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606 'SELECT revnum, deltaid FROM fileindex ' |
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607 'WHERE pathid=? ' |
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608 ' AND node in (%s)' % (','.join(['?'] * len(nodes))), |
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609 tuple([self._pathid] + nodes), |
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610 ) |
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611 |
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612 deltabases = {} |
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613 |
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614 for rev, deltaid in res: |
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615 res = self._db.execute( |
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616 'SELECT revnum from fileindex WHERE pathid=? AND deltaid=?', |
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617 (self._pathid, deltaid), |
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618 ) |
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619 deltabases[rev] = res.fetchone()[0] |
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620 |
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621 # TODO define revdifffn so we can use delta from storage. |
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622 for delta in storageutil.emitrevisions( |
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623 self, |
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624 nodes, |
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625 nodesorder, |
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626 sqliterevisiondelta, |
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627 deltaparentfn=deltabases.__getitem__, |
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628 revisiondata=revisiondata, |
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629 assumehaveparentrevisions=assumehaveparentrevisions, |
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630 deltamode=deltamode, |
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631 sidedata_helpers=sidedata_helpers, |
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632 ): |
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633 |
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634 yield delta |
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635 |
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636 # End of ifiledata interface. |
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637 |
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638 # Start of ifilemutation interface. |
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639 |
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640 def add(self, filedata, meta, transaction, linkrev, p1, p2): |
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641 if meta or filedata.startswith(b'\x01\n'): |
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642 filedata = storageutil.packmeta(meta, filedata) |
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643 |
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644 rev = self.addrevision(filedata, transaction, linkrev, p1, p2) |
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645 return self.node(rev) |
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646 |
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647 def addrevision( |
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648 self, |
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649 revisiondata, |
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650 transaction, |
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651 linkrev, |
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652 p1, |
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653 p2, |
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654 node=None, |
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655 flags=0, |
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656 cachedelta=None, |
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657 ): |
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658 if flags: |
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659 raise SQLiteStoreError(_(b'flags not supported on revisions')) |
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660 |
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661 validatehash = node is not None |
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662 node = node or storageutil.hashrevisionsha1(revisiondata, p1, p2) |
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663 |
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664 if validatehash: |
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665 self._checkhash(revisiondata, node, p1, p2) |
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666 |
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667 rev = self._nodetorev.get(node) |
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668 if rev is not None: |
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669 return rev |
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670 |
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671 rev = self._addrawrevision( |
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672 node, revisiondata, transaction, linkrev, p1, p2 |
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673 ) |
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674 |
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675 self._revisioncache[node] = revisiondata |
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676 return rev |
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677 |
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678 def addgroup( |
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679 self, |
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680 deltas, |
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681 linkmapper, |
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682 transaction, |
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683 addrevisioncb=None, |
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684 duplicaterevisioncb=None, |
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685 maybemissingparents=False, |
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686 ): |
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687 empty = True |
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688 |
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689 for ( |
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690 node, |
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691 p1, |
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692 p2, |
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693 linknode, |
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694 deltabase, |
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695 delta, |
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696 wireflags, |
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697 sidedata, |
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698 ) in deltas: |
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699 storeflags = 0 |
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700 |
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701 if wireflags & repository.REVISION_FLAG_CENSORED: |
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702 storeflags |= FLAG_CENSORED |
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703 |
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704 if wireflags & ~repository.REVISION_FLAG_CENSORED: |
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705 raise SQLiteStoreError(b'unhandled revision flag') |
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706 |
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|
707 if maybemissingparents: |
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708 if p1 != sha1nodeconstants.nullid and not self.hasnode(p1): |
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|
709 p1 = sha1nodeconstants.nullid |
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710 storeflags |= FLAG_MISSING_P1 |
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711 |
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712 if p2 != sha1nodeconstants.nullid and not self.hasnode(p2): |
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713 p2 = sha1nodeconstants.nullid |
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714 storeflags |= FLAG_MISSING_P2 |
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715 |
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716 baserev = self.rev(deltabase) |
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717 |
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718 # If base is censored, delta must be full replacement in a single |
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719 # patch operation. |
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720 if baserev != nullrev and self.iscensored(baserev): |
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721 hlen = struct.calcsize(b'>lll') |
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|
722 oldlen = len(self.rawdata(deltabase, _verifyhash=False)) |
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723 newlen = len(delta) - hlen |
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724 |
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725 if delta[:hlen] != mdiff.replacediffheader(oldlen, newlen): |
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726 raise error.CensoredBaseError(self._path, deltabase) |
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727 |
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728 if not (storeflags & FLAG_CENSORED) and storageutil.deltaiscensored( |
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729 delta, baserev, lambda x: len(self.rawdata(x)) |
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730 ): |
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731 storeflags |= FLAG_CENSORED |
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732 |
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733 linkrev = linkmapper(linknode) |
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734 |
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735 if node in self._revisions: |
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|
736 # Possibly reset parents to make them proper. |
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|
737 entry = self._revisions[node] |
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738 |
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739 if ( |
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740 entry.flags & FLAG_MISSING_P1 |
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741 and p1 != sha1nodeconstants.nullid |
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742 ): |
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743 entry.p1node = p1 |
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|
744 entry.p1rev = self._nodetorev[p1] |
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|
745 entry.flags &= ~FLAG_MISSING_P1 |
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746 |
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|
747 self._db.execute( |
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748 'UPDATE fileindex SET p1rev=?, flags=? WHERE id=?', |
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749 (self._nodetorev[p1], entry.flags, entry.rid), |
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750 ) |
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751 |
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752 if ( |
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753 entry.flags & FLAG_MISSING_P2 |
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754 and p2 != sha1nodeconstants.nullid |
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755 ): |
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756 entry.p2node = p2 |
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757 entry.p2rev = self._nodetorev[p2] |
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758 entry.flags &= ~FLAG_MISSING_P2 |
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759 |
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760 self._db.execute( |
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761 'UPDATE fileindex SET p2rev=?, flags=? WHERE id=?', |
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762 (self._nodetorev[p1], entry.flags, entry.rid), |
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763 ) |
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764 |
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765 if duplicaterevisioncb: |
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766 duplicaterevisioncb(self, self.rev(node)) |
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767 empty = False |
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768 continue |
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769 |
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770 if deltabase == sha1nodeconstants.nullid: |
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771 text = mdiff.patch(b'', delta) |
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772 storedelta = None |
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773 else: |
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774 text = None |
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775 storedelta = (deltabase, delta) |
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776 |
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777 rev = self._addrawrevision( |
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778 node, |
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779 text, |
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780 transaction, |
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781 linkrev, |
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782 p1, |
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783 p2, |
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784 storedelta=storedelta, |
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785 flags=storeflags, |
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786 ) |
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787 |
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788 if addrevisioncb: |
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789 addrevisioncb(self, rev) |
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790 empty = False |
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791 |
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792 return not empty |
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793 |
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794 def censorrevision(self, tr, censornode, tombstone=b''): |
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795 tombstone = storageutil.packmeta({b'censored': tombstone}, b'') |
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796 |
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797 # This restriction is cargo culted from revlogs and makes no sense for |
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798 # SQLite, since columns can be resized at will. |
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799 if len(tombstone) > len(self.rawdata(censornode)): |
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800 raise error.Abort( |
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801 _(b'censor tombstone must be no longer than censored data') |
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802 ) |
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803 |
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804 # We need to replace the censored revision's data with the tombstone. |
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805 # But replacing that data will have implications for delta chains that |
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806 # reference it. |
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807 # |
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808 # While "better," more complex strategies are possible, we do something |
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809 # simple: we find delta chain children of the censored revision and we |
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|
810 # replace those incremental deltas with fulltexts of their corresponding |
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811 # revision. Then we delete the now-unreferenced delta and original |
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812 # revision and insert a replacement. |
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813 |
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814 # Find the delta to be censored. |
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|
815 censoreddeltaid = self._db.execute( |
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816 'SELECT deltaid FROM fileindex WHERE id=?', |
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817 (self._revisions[censornode].rid,), |
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818 ).fetchone()[0] |
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819 |
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820 # Find all its delta chain children. |
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821 # TODO once we support storing deltas for !files, we'll need to look |
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822 # for those delta chains too. |
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823 rows = list( |
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824 self._db.execute( |
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825 'SELECT id, pathid, node FROM fileindex ' |
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826 'WHERE deltabaseid=? OR deltaid=?', |
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827 (censoreddeltaid, censoreddeltaid), |
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828 ) |
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829 ) |
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830 |
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831 for row in rows: |
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|
832 rid, pathid, node = row |
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833 |
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834 fulltext = resolvedeltachain( |
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835 self._db, pathid, node, {}, {-1: None}, zstddctx=self._dctx |
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836 ) |
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837 |
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838 deltahash = hashutil.sha1(fulltext).digest() |
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839 |
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840 if self._compengine == b'zstd': |
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841 deltablob = self._cctx.compress(fulltext) |
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842 compression = COMPRESSION_ZSTD |
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843 elif self._compengine == b'zlib': |
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844 deltablob = zlib.compress(fulltext) |
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845 compression = COMPRESSION_ZLIB |
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846 elif self._compengine == b'none': |
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847 deltablob = fulltext |
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848 compression = COMPRESSION_NONE |
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849 else: |
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850 raise error.ProgrammingError( |
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851 b'unhandled compression engine: %s' % self._compengine |
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852 ) |
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853 |
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854 if len(deltablob) >= len(fulltext): |
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855 deltablob = fulltext |
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856 compression = COMPRESSION_NONE |
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857 |
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858 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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859 |
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860 self._db.execute( |
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861 'UPDATE fileindex SET deltaid=?, deltabaseid=NULL ' |
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862 'WHERE id=?', |
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863 (deltaid, rid), |
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864 ) |
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865 |
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866 # Now create the tombstone delta and replace the delta on the censored |
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|
867 # node. |
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868 deltahash = hashutil.sha1(tombstone).digest() |
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869 tombstonedeltaid = insertdelta( |
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870 self._db, COMPRESSION_NONE, deltahash, tombstone |
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871 ) |
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872 |
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873 flags = self._revisions[censornode].flags |
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|
874 flags |= FLAG_CENSORED |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
875 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
876 self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
877 'UPDATE fileindex SET flags=?, deltaid=?, deltabaseid=NULL ' |
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
878 'WHERE pathid=? AND node=?', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
879 (flags, tombstonedeltaid, self._pathid, censornode), |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
880 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
881 |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
882 self._db.execute('DELETE FROM delta WHERE id=?', (censoreddeltaid,)) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
883 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
884 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
885 self._revisioncache.clear() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
886 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
887 def getstrippoint(self, minlink): |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
888 return storageutil.resolvestripinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
889 minlink, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
890 len(self) - 1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
891 [self.rev(n) for n in self.heads()], |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
892 self.linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
893 self.parentrevs, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
894 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
895 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
896 def strip(self, minlink, transaction): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
897 if not len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
898 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
899 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
900 rev, _ignored = self.getstrippoint(minlink) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
901 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
902 if rev == len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
903 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
904 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
905 for rev in self.revs(rev): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
906 self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
907 'DELETE FROM fileindex WHERE pathid=? AND node=?', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
908 (self._pathid, self.node(rev)), |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
909 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
910 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
911 # TODO how should we garbage collect data in delta table? |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
912 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
913 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
914 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
915 # End of ifilemutation interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
916 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
917 # Start of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
918 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
919 def files(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
920 return [] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
921 |
46712
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
922 def sidedata(self, nodeorrev, _df=None): |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
923 # Not supported for now |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
924 return {} |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
925 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
926 def storageinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
927 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
928 exclusivefiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
929 sharedfiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
930 revisionscount=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
931 trackedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
932 storedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
933 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
934 d = {} |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
935 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
936 if exclusivefiles: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
937 d[b'exclusivefiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
938 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
939 if sharedfiles: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
940 # TODO list sqlite file(s) here. |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
941 d[b'sharedfiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
942 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
943 if revisionscount: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
944 d[b'revisionscount'] = len(self) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
945 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
946 if trackedsize: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
947 d[b'trackedsize'] = sum( |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
948 len(self.revision(node)) for node in self._nodetorev |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
949 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
950 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
951 if storedsize: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
952 # TODO implement this? |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
953 d[b'storedsize'] = None |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
954 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
955 return d |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
956 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
957 def verifyintegrity(self, state): |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
958 state[b'skipread'] = set() |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
959 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
960 for rev in self: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
961 node = self.node(rev) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
962 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
963 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
964 self.revision(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
965 except Exception as e: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
966 yield sqliteproblem( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
967 error=_(b'unpacking %s: %s') % (short(node), e), node=node |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
968 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
969 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
970 state[b'skipread'].add(node) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
971 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
972 # End of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
973 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
974 def _checkhash(self, fulltext, node, p1=None, p2=None): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
975 if p1 is None and p2 is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
976 p1, p2 = self.parents(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
977 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
978 if node == storageutil.hashrevisionsha1(fulltext, p1, p2): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
979 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
980 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
981 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
982 del self._revisioncache[node] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
983 except KeyError: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
984 pass |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
985 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
986 if storageutil.iscensoredtext(fulltext): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
987 raise error.CensoredNodeError(self._path, node, fulltext) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
988 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
989 raise SQLiteStoreError(_(b'integrity check failed on %s') % self._path) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
990 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
991 def _addrawrevision( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
992 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
993 node, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
994 revisiondata, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
995 transaction, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
996 linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
997 p1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
998 p2, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
999 storedelta=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1000 flags=0, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1001 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1002 if self._pathid is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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1003 res = self._db.execute( |
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1004 'INSERT INTO filepath (path) VALUES (?)', (self._path,) |
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1005 ) |
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1006 self._pathid = res.lastrowid |
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1007 |
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1008 # For simplicity, always store a delta against p1. |
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|
1009 # TODO we need a lot more logic here to make behavior reasonable. |
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1010 |
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1011 if storedelta: |
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|
1012 deltabase, delta = storedelta |
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|
1013 |
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|
1014 if isinstance(deltabase, int): |
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1015 deltabase = self.node(deltabase) |
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|
1016 |
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1017 else: |
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1018 assert revisiondata is not None |
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1019 deltabase = p1 |
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1020 |
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1021 if deltabase == sha1nodeconstants.nullid: |
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1022 delta = revisiondata |
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1023 else: |
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1024 delta = mdiff.textdiff( |
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1025 self.revision(self.rev(deltabase)), revisiondata |
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1026 ) |
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1027 |
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1028 # File index stores a pointer to its delta and the parent delta. |
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1029 # The parent delta is stored via a pointer to the fileindex PK. |
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1030 if deltabase == sha1nodeconstants.nullid: |
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1031 baseid = None |
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1032 else: |
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1033 baseid = self._revisions[deltabase].rid |
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1034 |
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1035 # Deltas are stored with a hash of their content. This allows |
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1036 # us to de-duplicate. The table is configured to ignore conflicts |
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1037 # and it is faster to just insert and silently noop than to look |
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1038 # first. |
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1039 deltahash = hashutil.sha1(delta).digest() |
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1040 |
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1041 if self._compengine == b'zstd': |
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1042 deltablob = self._cctx.compress(delta) |
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1043 compression = COMPRESSION_ZSTD |
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1044 elif self._compengine == b'zlib': |
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1045 deltablob = zlib.compress(delta) |
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1046 compression = COMPRESSION_ZLIB |
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1047 elif self._compengine == b'none': |
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1048 deltablob = delta |
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1049 compression = COMPRESSION_NONE |
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1050 else: |
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1051 raise error.ProgrammingError( |
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1052 b'unhandled compression engine: %s' % self._compengine |
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1053 ) |
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1054 |
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1055 # Don't store compressed data if it isn't practical. |
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1056 if len(deltablob) >= len(delta): |
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1057 deltablob = delta |
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1058 compression = COMPRESSION_NONE |
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|
1059 |
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1060 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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1061 |
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|
1062 rev = len(self) |
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1063 |
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1064 if p1 == sha1nodeconstants.nullid: |
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1065 p1rev = nullrev |
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1066 else: |
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1067 p1rev = self._nodetorev[p1] |
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1068 |
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1069 if p2 == sha1nodeconstants.nullid: |
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1070 p2rev = nullrev |
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1071 else: |
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1072 p2rev = self._nodetorev[p2] |
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|
1073 |
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1074 rid = self._db.execute( |
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1075 'INSERT INTO fileindex (' |
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1076 ' pathid, revnum, node, p1rev, p2rev, linkrev, flags, ' |
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|
1077 ' deltaid, deltabaseid) ' |
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|
1078 ' VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)', |
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1079 ( |
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|
1080 self._pathid, |
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|
1081 rev, |
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1082 node, |
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|
1083 p1rev, |
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|
1084 p2rev, |
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|
1085 linkrev, |
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|
1086 flags, |
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|
1087 deltaid, |
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|
1088 baseid, |
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1089 ), |
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|
1090 ).lastrowid |
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|
1091 |
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|
1092 entry = revisionentry( |
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|
1093 rid=rid, |
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|
1094 rev=rev, |
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|
1095 node=node, |
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|
1096 p1rev=p1rev, |
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|
1097 p2rev=p2rev, |
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|
1098 p1node=p1, |
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|
1099 p2node=p2, |
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|
1100 linkrev=linkrev, |
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1101 flags=flags, |
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1102 ) |
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1103 |
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1104 self._nodetorev[node] = rev |
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1105 self._revtonode[rev] = node |
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1106 self._revisions[node] = entry |
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|
1107 |
46508
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|
1108 return rev |
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1109 |
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1110 |
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|
1111 class sqliterepository(localrepo.localrepository): |
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|
1112 def cancopy(self): |
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|
1113 return False |
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|
1114 |
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|
1115 def transaction(self, *args, **kwargs): |
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1116 current = self.currenttransaction() |
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|
1117 |
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|
1118 tr = super(sqliterepository, self).transaction(*args, **kwargs) |
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1119 |
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|
1120 if current: |
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|
1121 return tr |
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1122 |
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1123 self._dbconn.execute('BEGIN TRANSACTION') |
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1124 |
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|
1125 def committransaction(_): |
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1126 self._dbconn.commit() |
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1127 |
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1128 tr.addfinalize(b'sqlitestore', committransaction) |
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1129 |
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parents:
diff
changeset
|
1130 return tr |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1131 |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1132 @property |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1133 def _dbconn(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1134 # SQLite connections can only be used on the thread that created |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1135 # them. In most cases, this "just works." However, hgweb uses |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1136 # multiple threads. |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1137 tid = threading.current_thread().ident |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1138 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1139 if self._db: |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1140 if self._db[0] == tid: |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1141 return self._db[1] |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1142 |
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Augie Fackler <augie@google.com>
parents:
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changeset
|
1143 db = makedb(self.svfs.join(b'db.sqlite')) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1144 self._db = (tid, db) |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1145 |
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sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
1146 return db |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1147 |
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2372284d9457
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parents:
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diff
changeset
|
1148 |
40326
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parents:
diff
changeset
|
1149 def makedb(path): |
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parents:
diff
changeset
|
1150 """Construct a database handle for a database at path.""" |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1151 |
40410
3b782669561d
py3: make sure we pass sysstr in sqlite3.connect()
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
40392
diff
changeset
|
1152 db = sqlite3.connect(encoding.strfromlocal(path)) |
40326
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parents:
diff
changeset
|
1153 db.text_factory = bytes |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1154 |
43507
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Augie Fackler <augie@google.com>
parents:
43117
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|
1155 res = db.execute('PRAGMA user_version').fetchone()[0] |
40326
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parents:
diff
changeset
|
1156 |
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parents:
diff
changeset
|
1157 # New database. |
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parents:
diff
changeset
|
1158 if res == 0: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1159 for statement in CREATE_SCHEMA: |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1160 db.execute(statement) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1161 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1162 db.commit() |
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parents:
diff
changeset
|
1163 |
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parents:
diff
changeset
|
1164 elif res == CURRENT_SCHEMA_VERSION: |
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parents:
diff
changeset
|
1165 pass |
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sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
1166 |
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parents:
diff
changeset
|
1167 else: |
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Augie Fackler <augie@google.com>
parents:
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diff
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|
1168 raise error.Abort(_(b'sqlite database has unrecognized version')) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1169 |
43507
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Augie Fackler <augie@google.com>
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43117
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|
1170 db.execute('PRAGMA journal_mode=WAL') |
40326
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parents:
diff
changeset
|
1171 |
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parents:
diff
changeset
|
1172 return db |
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parents:
diff
changeset
|
1173 |
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Augie Fackler <augie@google.com>
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|
1174 |
40326
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parents:
diff
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|
1175 def featuresetup(ui, supported): |
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parents:
diff
changeset
|
1176 supported.add(REQUIREMENT) |
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parents:
diff
changeset
|
1177 |
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parents:
diff
changeset
|
1178 if zstd: |
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parents:
diff
changeset
|
1179 supported.add(REQUIREMENT_ZSTD) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1180 |
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parents:
diff
changeset
|
1181 supported.add(REQUIREMENT_ZLIB) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1182 supported.add(REQUIREMENT_NONE) |
40390
7e3b6c4f01a2
localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
changeset
|
1183 supported.add(REQUIREMENT_SHALLOW_FILES) |
45372
77b8588dd84e
requirements: introduce new requirements related module
Pulkit Goyal <7895pulkit@gmail.com>
parents:
44062
diff
changeset
|
1184 supported.add(requirements.NARROW_REQUIREMENT) |
40326
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parents:
diff
changeset
|
1185 |
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|
1186 |
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parents:
diff
changeset
|
1187 def newreporequirements(orig, ui, createopts): |
43077
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Augie Fackler <augie@google.com>
parents:
43076
diff
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|
1188 if createopts[b'backend'] != b'sqlite': |
40326
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parents:
diff
changeset
|
1189 return orig(ui, createopts) |
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parents:
diff
changeset
|
1190 |
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sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
1191 # This restriction can be lifted once we have more confidence. |
43077
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
1192 if b'sharedrepo' in createopts: |
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parents:
42814
diff
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|
1193 raise error.Abort( |
43117
8ff1ecfadcd1
cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents:
43077
diff
changeset
|
1194 _(b'shared repositories not supported with SQLite store') |
43076
2372284d9457
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parents:
42814
diff
changeset
|
1195 ) |
40326
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parents:
diff
changeset
|
1196 |
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parents:
diff
changeset
|
1197 # This filtering is out of an abundance of caution: we want to ensure |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1198 # we honor creation options and we do that by annotating exactly the |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1199 # creation options we recognize. |
fed697fa1734
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parents:
diff
changeset
|
1200 known = { |
43077
687b865b95ad
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1201 b'narrowfiles', |
687b865b95ad
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1202 b'backend', |
687b865b95ad
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1203 b'shallowfilestore', |
40326
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parents:
diff
changeset
|
1204 } |
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parents:
diff
changeset
|
1205 |
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parents:
diff
changeset
|
1206 unsupported = set(createopts) - known |
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parents:
diff
changeset
|
1207 if unsupported: |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1208 raise error.Abort( |
43117
8ff1ecfadcd1
cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents:
43077
diff
changeset
|
1209 _(b'SQLite store does not support repo creation option: %s') |
43077
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parents:
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diff
changeset
|
1210 % b', '.join(sorted(unsupported)) |
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parents:
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diff
changeset
|
1211 ) |
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diff
changeset
|
1212 |
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diff
changeset
|
1213 # Since we're a hybrid store that still relies on revlogs, we fall back |
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parents:
diff
changeset
|
1214 # to using the revlogv1 backend's storage requirements then adding our |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1215 # own requirement. |
43077
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parents:
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|
1216 createopts[b'backend'] = b'revlogv1' |
40326
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diff
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|
1217 requirements = orig(ui, createopts) |
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diff
changeset
|
1218 requirements.add(REQUIREMENT) |
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parents:
diff
changeset
|
1219 |
43077
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changeset
|
1220 compression = ui.config(b'storage', b'sqlite.compression') |
40326
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diff
changeset
|
1221 |
43077
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parents:
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diff
changeset
|
1222 if compression == b'zstd' and not zstd: |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1223 raise error.Abort( |
2372284d9457
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parents:
42814
diff
changeset
|
1224 _( |
43077
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
1225 b'storage.sqlite.compression set to "zstd" but ' |
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
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parents:
43076
diff
changeset
|
1226 b'zstandard compression not available to this ' |
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
1227 b'Mercurial install' |
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parents:
42814
diff
changeset
|
1228 ) |
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diff
changeset
|
1229 ) |
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changeset
|
1230 |
43077
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parents:
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changeset
|
1231 if compression == b'zstd': |
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parents:
diff
changeset
|
1232 requirements.add(REQUIREMENT_ZSTD) |
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parents:
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changeset
|
1233 elif compression == b'zlib': |
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diff
changeset
|
1234 requirements.add(REQUIREMENT_ZLIB) |
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parents:
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changeset
|
1235 elif compression == b'none': |
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diff
changeset
|
1236 requirements.add(REQUIREMENT_NONE) |
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diff
changeset
|
1237 else: |
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parents:
42814
diff
changeset
|
1238 raise error.Abort( |
2372284d9457
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parents:
42814
diff
changeset
|
1239 _( |
43077
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parents:
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changeset
|
1240 b'unknown compression engine defined in ' |
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
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parents:
43076
diff
changeset
|
1241 b'storage.sqlite.compression: %s' |
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parents:
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diff
changeset
|
1242 ) |
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parents:
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diff
changeset
|
1243 % compression |
2372284d9457
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|
1244 ) |
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parents:
diff
changeset
|
1245 |
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1246 if createopts.get(b'shallowfilestore'): |
40390
7e3b6c4f01a2
localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
changeset
|
1247 requirements.add(REQUIREMENT_SHALLOW_FILES) |
7e3b6c4f01a2
localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
changeset
|
1248 |
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parents:
diff
changeset
|
1249 return requirements |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1250 |
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parents:
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changeset
|
1251 |
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1252 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage) |
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1253 class sqlitefilestorage(object): |
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1254 """Repository file storage backed by SQLite.""" |
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1255 |
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1256 def file(self, path): |
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1257 if path[0] == b'/': |
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1258 path = path[1:] |
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1259 |
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1260 if REQUIREMENT_ZSTD in self.requirements: |
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1261 compression = b'zstd' |
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1262 elif REQUIREMENT_ZLIB in self.requirements: |
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1263 compression = b'zlib' |
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1264 elif REQUIREMENT_NONE in self.requirements: |
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1265 compression = b'none' |
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1266 else: |
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1267 raise error.Abort( |
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1268 _( |
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1269 b'unable to determine what compression engine ' |
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1270 b'to use for SQLite storage' |
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1271 ) |
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1272 ) |
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1273 |
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1274 return sqlitefilestore(self._dbconn, path, compression) |
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1275 |
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1277 def makefilestorage(orig, requirements, features, **kwargs): |
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1278 """Produce a type conforming to ``ilocalrepositoryfilestorage``.""" |
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1279 if REQUIREMENT in requirements: |
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1280 if REQUIREMENT_SHALLOW_FILES in requirements: |
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1281 features.add(repository.REPO_FEATURE_SHALLOW_FILE_STORAGE) |
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1282 |
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1283 return sqlitefilestorage |
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1284 else: |
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1285 return orig(requirements=requirements, features=features, **kwargs) |
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1286 |
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1287 |
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1288 def makemain(orig, ui, requirements, **kwargs): |
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1289 if REQUIREMENT in requirements: |
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1290 if REQUIREMENT_ZSTD in requirements and not zstd: |
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1291 raise error.Abort( |
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1292 _( |
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1293 b'repository uses zstandard compression, which ' |
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1294 b'is not available to this Mercurial install' |
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1295 ) |
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1296 ) |
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1297 |
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1298 return sqliterepository |
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1299 |
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1300 return orig(requirements=requirements, **kwargs) |
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1301 |
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1302 |
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1303 def verifierinit(orig, self, *args, **kwargs): |
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1304 orig(self, *args, **kwargs) |
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1305 |
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1306 # We don't care that files in the store don't align with what is |
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1307 # advertised. So suppress these warnings. |
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1308 self.warnorphanstorefiles = False |
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1309 |
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1310 |
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1311 def extsetup(ui): |
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1312 localrepo.featuresetupfuncs.add(featuresetup) |
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1313 extensions.wrapfunction( |
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1314 localrepo, b'newreporequirements', newreporequirements |
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1315 ) |
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1316 extensions.wrapfunction(localrepo, b'makefilestorage', makefilestorage) |
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1317 extensions.wrapfunction(localrepo, b'makemain', makemain) |
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1318 extensions.wrapfunction(verify.verifier, b'__init__', verifierinit) |
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1319 |
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1320 |
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1321 def reposetup(ui, repo): |
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1322 if isinstance(repo, sqliterepository): |
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1323 repo._db = None |
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1324 |
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1325 # TODO check for bundlerepository? |