Mercurial > hg
annotate hgext/sqlitestore.py @ 46884:cc3ad5c3af3b
persistent-nodemap: enable the feature by default when using Rust
As discussed at the 5.6 sprint, we can make it enabled by default, but only for
Rust installation.
Differential Revision: https://phab.mercurial-scm.org/D9765
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 14 Jan 2021 04:58:20 +0100 |
parents | 6266d19556ad |
children | d55b71393907 |
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 nullid, |
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56 nullrev, |
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57 sha1nodeconstants, |
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58 short, |
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59 ) |
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60 from mercurial.thirdparty import attr |
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61 from mercurial import ( |
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62 ancestor, |
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63 dagop, |
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64 encoding, |
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65 error, |
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66 extensions, |
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67 localrepo, |
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68 mdiff, |
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69 pycompat, |
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70 registrar, |
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71 requirements, |
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72 util, |
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73 verify, |
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74 ) |
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75 from mercurial.interfaces import ( |
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76 repository, |
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77 util as interfaceutil, |
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78 ) |
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79 from mercurial.utils import ( |
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80 hashutil, |
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81 storageutil, |
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82 ) |
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83 |
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84 try: |
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85 from mercurial import zstd |
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86 |
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87 zstd.__version__ |
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88 except ImportError: |
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89 zstd = None |
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90 |
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91 configtable = {} |
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92 configitem = registrar.configitem(configtable) |
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93 |
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94 # experimental config: storage.sqlite.compression |
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95 configitem( |
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96 b'storage', |
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97 b'sqlite.compression', |
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98 default=b'zstd' if zstd else b'zlib', |
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99 experimental=True, |
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100 ) |
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101 |
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102 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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103 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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104 # be specifying the version(s) of Mercurial they are tested with, or |
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105 # leave the attribute unspecified. |
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106 testedwith = b'ships-with-hg-core' |
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107 |
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108 REQUIREMENT = b'exp-sqlite-001' |
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109 REQUIREMENT_ZSTD = b'exp-sqlite-comp-001=zstd' |
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110 REQUIREMENT_ZLIB = b'exp-sqlite-comp-001=zlib' |
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111 REQUIREMENT_NONE = b'exp-sqlite-comp-001=none' |
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112 REQUIREMENT_SHALLOW_FILES = b'exp-sqlite-shallow-files' |
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113 |
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114 CURRENT_SCHEMA_VERSION = 1 |
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115 |
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116 COMPRESSION_NONE = 1 |
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117 COMPRESSION_ZSTD = 2 |
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118 COMPRESSION_ZLIB = 3 |
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119 |
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120 FLAG_CENSORED = 1 |
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121 FLAG_MISSING_P1 = 2 |
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122 FLAG_MISSING_P2 = 4 |
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123 |
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124 CREATE_SCHEMA = [ |
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125 # Deltas are stored as content-indexed blobs. |
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126 # compression column holds COMPRESSION_* constant for how the |
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127 # delta is encoded. |
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128 'CREATE TABLE delta (' |
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129 ' id INTEGER PRIMARY KEY, ' |
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130 ' compression INTEGER NOT NULL, ' |
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131 ' hash BLOB UNIQUE ON CONFLICT ABORT, ' |
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132 ' delta BLOB NOT NULL ' |
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133 ')', |
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134 # Tracked paths are denormalized to integers to avoid redundant |
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135 # storage of the path name. |
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136 'CREATE TABLE filepath (' |
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137 ' id INTEGER PRIMARY KEY, ' |
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138 ' path BLOB NOT NULL ' |
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139 ')', |
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140 'CREATE UNIQUE INDEX filepath_path ON filepath (path)', |
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141 # We have a single table for all file revision data. |
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142 # Each file revision is uniquely described by a (path, rev) and |
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143 # (path, node). |
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144 # |
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145 # Revision data is stored as a pointer to the delta producing this |
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146 # revision and the file revision whose delta should be applied before |
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147 # that one. One can reconstruct the delta chain by recursively following |
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148 # the delta base revision pointers until one encounters NULL. |
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149 # |
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150 # flags column holds bitwise integer flags controlling storage options. |
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151 # These flags are defined by the FLAG_* constants. |
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152 'CREATE TABLE fileindex (' |
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153 ' id INTEGER PRIMARY KEY, ' |
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154 ' pathid INTEGER REFERENCES filepath(id), ' |
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155 ' revnum INTEGER NOT NULL, ' |
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156 ' p1rev INTEGER NOT NULL, ' |
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157 ' p2rev INTEGER NOT NULL, ' |
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158 ' linkrev INTEGER NOT NULL, ' |
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159 ' flags INTEGER NOT NULL, ' |
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160 ' deltaid INTEGER REFERENCES delta(id), ' |
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161 ' deltabaseid INTEGER REFERENCES fileindex(id), ' |
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162 ' node BLOB NOT NULL ' |
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163 ')', |
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164 'CREATE UNIQUE INDEX fileindex_pathrevnum ' |
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165 ' ON fileindex (pathid, revnum)', |
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166 'CREATE UNIQUE INDEX fileindex_pathnode ON fileindex (pathid, node)', |
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167 # Provide a view over all file data for convenience. |
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168 'CREATE VIEW filedata AS ' |
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169 'SELECT ' |
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170 ' fileindex.id AS id, ' |
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171 ' filepath.id AS pathid, ' |
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172 ' filepath.path AS path, ' |
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173 ' fileindex.revnum AS revnum, ' |
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174 ' fileindex.node AS node, ' |
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175 ' fileindex.p1rev AS p1rev, ' |
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176 ' fileindex.p2rev AS p2rev, ' |
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177 ' fileindex.linkrev AS linkrev, ' |
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178 ' fileindex.flags AS flags, ' |
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179 ' fileindex.deltaid AS deltaid, ' |
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180 ' fileindex.deltabaseid AS deltabaseid ' |
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181 'FROM filepath, fileindex ' |
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182 'WHERE fileindex.pathid=filepath.id', |
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183 'PRAGMA user_version=%d' % CURRENT_SCHEMA_VERSION, |
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184 ] |
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185 |
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186 |
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187 def resolvedeltachain(db, pathid, node, revisioncache, stoprids, zstddctx=None): |
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188 """Resolve a delta chain for a file node.""" |
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189 |
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190 # TODO the "not in ({stops})" here is possibly slowing down the query |
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191 # because it needs to perform the lookup on every recursive invocation. |
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192 # This could possibly be faster if we created a temporary query with |
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193 # baseid "poisoned" to null and limited the recursive filter to |
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194 # "is not null". |
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195 res = db.execute( |
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196 'WITH RECURSIVE ' |
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197 ' deltachain(deltaid, baseid) AS (' |
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198 ' SELECT deltaid, deltabaseid FROM fileindex ' |
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199 ' WHERE pathid=? AND node=? ' |
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200 ' UNION ALL ' |
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201 ' SELECT fileindex.deltaid, deltabaseid ' |
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202 ' FROM fileindex, deltachain ' |
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203 ' WHERE ' |
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204 ' fileindex.id=deltachain.baseid ' |
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205 ' AND deltachain.baseid IS NOT NULL ' |
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206 ' AND fileindex.id NOT IN ({stops}) ' |
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207 ' ) ' |
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208 'SELECT deltachain.baseid, compression, delta ' |
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209 'FROM deltachain, delta ' |
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210 'WHERE delta.id=deltachain.deltaid'.format( |
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211 stops=','.join(['?'] * len(stoprids)) |
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212 ), |
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213 tuple([pathid, node] + list(stoprids.keys())), |
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214 ) |
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215 |
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216 deltas = [] |
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217 lastdeltabaseid = None |
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218 |
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219 for deltabaseid, compression, delta in res: |
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220 lastdeltabaseid = deltabaseid |
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221 |
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222 if compression == COMPRESSION_ZSTD: |
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223 delta = zstddctx.decompress(delta) |
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224 elif compression == COMPRESSION_NONE: |
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225 delta = delta |
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226 elif compression == COMPRESSION_ZLIB: |
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227 delta = zlib.decompress(delta) |
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228 else: |
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229 raise SQLiteStoreError( |
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230 b'unhandled compression type: %d' % compression |
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231 ) |
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232 |
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233 deltas.append(delta) |
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234 |
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235 if lastdeltabaseid in stoprids: |
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236 basetext = revisioncache[stoprids[lastdeltabaseid]] |
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237 else: |
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238 basetext = deltas.pop() |
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239 |
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240 deltas.reverse() |
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241 fulltext = mdiff.patches(basetext, deltas) |
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242 |
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243 # SQLite returns buffer instances for blob columns on Python 2. This |
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244 # type can propagate through the delta application layer. Because |
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245 # downstream callers assume revisions are bytes, cast as needed. |
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246 if not isinstance(fulltext, bytes): |
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247 fulltext = bytes(delta) |
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248 |
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249 return fulltext |
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250 |
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251 |
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252 def insertdelta(db, compression, hash, delta): |
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253 try: |
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254 return db.execute( |
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255 'INSERT INTO delta (compression, hash, delta) VALUES (?, ?, ?)', |
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256 (compression, hash, delta), |
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257 ).lastrowid |
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258 except sqlite3.IntegrityError: |
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259 return db.execute( |
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260 'SELECT id FROM delta WHERE hash=?', (hash,) |
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261 ).fetchone()[0] |
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262 |
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263 |
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264 class SQLiteStoreError(error.StorageError): |
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265 pass |
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266 |
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267 |
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268 @attr.s |
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269 class revisionentry(object): |
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270 rid = attr.ib() |
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271 rev = attr.ib() |
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272 node = attr.ib() |
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273 p1rev = attr.ib() |
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274 p2rev = attr.ib() |
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275 p1node = attr.ib() |
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276 p2node = attr.ib() |
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277 linkrev = attr.ib() |
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278 flags = attr.ib() |
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279 |
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280 |
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281 @interfaceutil.implementer(repository.irevisiondelta) |
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282 @attr.s(slots=True) |
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283 class sqliterevisiondelta(object): |
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284 node = attr.ib() |
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285 p1node = attr.ib() |
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286 p2node = attr.ib() |
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287 basenode = attr.ib() |
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288 flags = attr.ib() |
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289 baserevisionsize = attr.ib() |
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290 revision = attr.ib() |
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291 delta = attr.ib() |
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292 sidedata = 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 = 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 = 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 == 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 == nullid: |
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415 return nullid, 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 == 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 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 [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 (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 != 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 != nullid and not self.hasnode(p1): |
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709 p1 = nullid |
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710 storeflags |= FLAG_MISSING_P1 |
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|
711 |
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712 if p2 != nullid and not self.hasnode(p2): |
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713 p2 = 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 entry.flags & FLAG_MISSING_P1 and p1 != nullid: |
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|
740 entry.p1node = p1 |
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|
741 entry.p1rev = self._nodetorev[p1] |
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742 entry.flags &= ~FLAG_MISSING_P1 |
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|
743 |
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|
744 self._db.execute( |
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|
745 'UPDATE fileindex SET p1rev=?, flags=? WHERE id=?', |
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746 (self._nodetorev[p1], entry.flags, entry.rid), |
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747 ) |
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748 |
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|
749 if entry.flags & FLAG_MISSING_P2 and p2 != nullid: |
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|
750 entry.p2node = p2 |
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|
751 entry.p2rev = self._nodetorev[p2] |
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|
752 entry.flags &= ~FLAG_MISSING_P2 |
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|
753 |
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|
754 self._db.execute( |
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755 'UPDATE fileindex SET p2rev=?, flags=? WHERE id=?', |
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756 (self._nodetorev[p1], entry.flags, entry.rid), |
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757 ) |
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758 |
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759 if duplicaterevisioncb: |
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760 duplicaterevisioncb(self, self.rev(node)) |
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761 empty = False |
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762 continue |
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763 |
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764 if deltabase == nullid: |
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765 text = mdiff.patch(b'', delta) |
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766 storedelta = None |
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767 else: |
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768 text = None |
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769 storedelta = (deltabase, delta) |
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770 |
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771 rev = self._addrawrevision( |
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772 node, |
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773 text, |
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774 transaction, |
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775 linkrev, |
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776 p1, |
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777 p2, |
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778 storedelta=storedelta, |
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779 flags=storeflags, |
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780 ) |
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781 |
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782 if addrevisioncb: |
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783 addrevisioncb(self, rev) |
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784 empty = False |
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785 |
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786 return not empty |
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787 |
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788 def censorrevision(self, tr, censornode, tombstone=b''): |
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789 tombstone = storageutil.packmeta({b'censored': tombstone}, b'') |
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790 |
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791 # This restriction is cargo culted from revlogs and makes no sense for |
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792 # SQLite, since columns can be resized at will. |
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793 if len(tombstone) > len(self.rawdata(censornode)): |
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794 raise error.Abort( |
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795 _(b'censor tombstone must be no longer than censored data') |
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796 ) |
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797 |
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798 # We need to replace the censored revision's data with the tombstone. |
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799 # But replacing that data will have implications for delta chains that |
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800 # reference it. |
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801 # |
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802 # While "better," more complex strategies are possible, we do something |
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803 # simple: we find delta chain children of the censored revision and we |
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804 # replace those incremental deltas with fulltexts of their corresponding |
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805 # revision. Then we delete the now-unreferenced delta and original |
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|
806 # revision and insert a replacement. |
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807 |
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808 # Find the delta to be censored. |
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|
809 censoreddeltaid = self._db.execute( |
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810 'SELECT deltaid FROM fileindex WHERE id=?', |
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811 (self._revisions[censornode].rid,), |
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812 ).fetchone()[0] |
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813 |
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814 # Find all its delta chain children. |
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815 # TODO once we support storing deltas for !files, we'll need to look |
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816 # for those delta chains too. |
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817 rows = list( |
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818 self._db.execute( |
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819 'SELECT id, pathid, node FROM fileindex ' |
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820 'WHERE deltabaseid=? OR deltaid=?', |
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821 (censoreddeltaid, censoreddeltaid), |
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822 ) |
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823 ) |
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824 |
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825 for row in rows: |
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|
826 rid, pathid, node = row |
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|
827 |
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828 fulltext = resolvedeltachain( |
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829 self._db, pathid, node, {}, {-1: None}, zstddctx=self._dctx |
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830 ) |
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831 |
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832 deltahash = hashutil.sha1(fulltext).digest() |
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833 |
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834 if self._compengine == b'zstd': |
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835 deltablob = self._cctx.compress(fulltext) |
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836 compression = COMPRESSION_ZSTD |
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837 elif self._compengine == b'zlib': |
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838 deltablob = zlib.compress(fulltext) |
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839 compression = COMPRESSION_ZLIB |
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840 elif self._compengine == b'none': |
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841 deltablob = fulltext |
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842 compression = COMPRESSION_NONE |
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843 else: |
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844 raise error.ProgrammingError( |
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845 b'unhandled compression engine: %s' % self._compengine |
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846 ) |
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847 |
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848 if len(deltablob) >= len(fulltext): |
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849 deltablob = fulltext |
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850 compression = COMPRESSION_NONE |
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851 |
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852 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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853 |
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854 self._db.execute( |
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855 'UPDATE fileindex SET deltaid=?, deltabaseid=NULL ' |
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856 'WHERE id=?', |
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857 (deltaid, rid), |
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858 ) |
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859 |
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860 # Now create the tombstone delta and replace the delta on the censored |
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861 # node. |
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862 deltahash = hashutil.sha1(tombstone).digest() |
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863 tombstonedeltaid = insertdelta( |
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864 self._db, COMPRESSION_NONE, deltahash, tombstone |
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865 ) |
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866 |
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867 flags = self._revisions[censornode].flags |
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|
868 flags |= FLAG_CENSORED |
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869 |
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870 self._db.execute( |
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871 'UPDATE fileindex SET flags=?, deltaid=?, deltabaseid=NULL ' |
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872 'WHERE pathid=? AND node=?', |
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873 (flags, tombstonedeltaid, self._pathid, censornode), |
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874 ) |
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875 |
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876 self._db.execute('DELETE FROM delta WHERE id=?', (censoreddeltaid,)) |
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877 |
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changeset
|
878 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
879 self._revisioncache.clear() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
880 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
881 def getstrippoint(self, minlink): |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
882 return storageutil.resolvestripinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
883 minlink, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
884 len(self) - 1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
885 [self.rev(n) for n in self.heads()], |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
886 self.linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
887 self.parentrevs, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
888 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
889 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
890 def strip(self, minlink, transaction): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
891 if not len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
892 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
893 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
894 rev, _ignored = self.getstrippoint(minlink) |
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 if rev == len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
897 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
898 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
899 for rev in self.revs(rev): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
900 self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
901 'DELETE FROM fileindex WHERE pathid=? AND node=?', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
902 (self._pathid, self.node(rev)), |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
903 ) |
40326
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 # 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
|
906 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
907 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
908 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
909 # End of ifilemutation interface. |
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 # Start of ifilestorage interface. |
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 def files(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
914 return [] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
915 |
46712
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
916 def sidedata(self, nodeorrev, _df=None): |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
917 # Not supported for now |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
918 return {} |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
919 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
920 def storageinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
921 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
922 exclusivefiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
923 sharedfiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
924 revisionscount=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
925 trackedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
926 storedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
927 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
928 d = {} |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
929 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
930 if exclusivefiles: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
931 d[b'exclusivefiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
932 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
933 if sharedfiles: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
934 # 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
|
935 d[b'sharedfiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
936 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
937 if revisionscount: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
938 d[b'revisionscount'] = len(self) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
939 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
940 if trackedsize: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
941 d[b'trackedsize'] = sum( |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
942 len(self.revision(node)) for node in self._nodetorev |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
943 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
944 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
945 if storedsize: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
946 # TODO implement this? |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
947 d[b'storedsize'] = None |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
948 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
949 return d |
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 def verifyintegrity(self, state): |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
952 state[b'skipread'] = set() |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
953 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
954 for rev in self: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
955 node = self.node(rev) |
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 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
958 self.revision(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
959 except Exception as e: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
960 yield sqliteproblem( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
961 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
|
962 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
963 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
964 state[b'skipread'].add(node) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
965 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
966 # End of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
967 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
968 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
|
969 if p1 is None and p2 is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
970 p1, p2 = self.parents(node) |
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 if node == storageutil.hashrevisionsha1(fulltext, p1, p2): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
973 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
974 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
975 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
976 del self._revisioncache[node] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
977 except KeyError: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
978 pass |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
979 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
980 if storageutil.iscensoredtext(fulltext): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
981 raise error.CensoredNodeError(self._path, node, fulltext) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
982 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
983 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
|
984 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
985 def _addrawrevision( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
986 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
987 node, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
988 revisiondata, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
989 transaction, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
990 linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
991 p1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
992 p2, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
993 storedelta=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
994 flags=0, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
995 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
996 if self._pathid is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
997 res = self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
998 'INSERT INTO filepath (path) VALUES (?)', (self._path,) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
999 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1000 self._pathid = res.lastrowid |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1001 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1002 # For simplicity, always store a delta against p1. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1003 # TODO we need a lot more logic here to make behavior reasonable. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1004 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1005 if storedelta: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1006 deltabase, delta = storedelta |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1007 |
fed697fa1734
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|
1008 if isinstance(deltabase, int): |
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|
1009 deltabase = self.node(deltabase) |
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|
1010 |
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|
1011 else: |
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diff
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|
1012 assert revisiondata is not None |
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parents:
diff
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|
1013 deltabase = p1 |
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diff
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|
1014 |
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diff
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|
1015 if deltabase == nullid: |
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parents:
diff
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|
1016 delta = revisiondata |
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|
1017 else: |
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1018 delta = mdiff.textdiff( |
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|
1019 self.revision(self.rev(deltabase)), revisiondata |
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1020 ) |
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1021 |
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|
1022 # File index stores a pointer to its delta and the parent delta. |
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parents:
diff
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|
1023 # The parent delta is stored via a pointer to the fileindex PK. |
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|
1024 if deltabase == nullid: |
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diff
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|
1025 baseid = None |
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diff
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|
1026 else: |
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diff
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|
1027 baseid = self._revisions[deltabase].rid |
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|
1028 |
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|
1029 # Deltas are stored with a hash of their content. This allows |
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1030 # us to de-duplicate. The table is configured to ignore conflicts |
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1031 # and it is faster to just insert and silently noop than to look |
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1032 # first. |
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1033 deltahash = hashutil.sha1(delta).digest() |
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1034 |
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1035 if self._compengine == b'zstd': |
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1036 deltablob = self._cctx.compress(delta) |
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1037 compression = COMPRESSION_ZSTD |
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1038 elif self._compengine == b'zlib': |
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|
1039 deltablob = zlib.compress(delta) |
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|
1040 compression = COMPRESSION_ZLIB |
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1041 elif self._compengine == b'none': |
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|
1042 deltablob = delta |
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|
1043 compression = COMPRESSION_NONE |
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|
1044 else: |
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|
1045 raise error.ProgrammingError( |
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parents:
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|
1046 b'unhandled compression engine: %s' % self._compengine |
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|
1047 ) |
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1048 |
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|
1049 # Don't store compressed data if it isn't practical. |
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parents:
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|
1050 if len(deltablob) >= len(delta): |
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|
1051 deltablob = delta |
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|
1052 compression = COMPRESSION_NONE |
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|
1053 |
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|
1054 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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|
1055 |
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parents:
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|
1056 rev = len(self) |
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|
1057 |
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|
1058 if p1 == nullid: |
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diff
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|
1059 p1rev = nullrev |
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|
1060 else: |
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|
1061 p1rev = self._nodetorev[p1] |
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|
1062 |
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|
1063 if p2 == nullid: |
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|
1064 p2rev = nullrev |
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|
1065 else: |
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|
1066 p2rev = self._nodetorev[p2] |
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|
1067 |
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|
1068 rid = self._db.execute( |
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|
1069 'INSERT INTO fileindex (' |
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|
1070 ' pathid, revnum, node, p1rev, p2rev, linkrev, flags, ' |
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|
1071 ' deltaid, deltabaseid) ' |
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|
1072 ' VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)', |
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|
1073 ( |
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|
1074 self._pathid, |
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|
1075 rev, |
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|
1076 node, |
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|
1077 p1rev, |
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|
1078 p2rev, |
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|
1079 linkrev, |
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|
1080 flags, |
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|
1081 deltaid, |
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|
1082 baseid, |
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|
1083 ), |
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|
1084 ).lastrowid |
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parents:
diff
changeset
|
1085 |
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parents:
diff
changeset
|
1086 entry = revisionentry( |
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parents:
diff
changeset
|
1087 rid=rid, |
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diff
changeset
|
1088 rev=rev, |
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parents:
diff
changeset
|
1089 node=node, |
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parents:
diff
changeset
|
1090 p1rev=p1rev, |
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parents:
diff
changeset
|
1091 p2rev=p2rev, |
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parents:
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|
1092 p1node=p1, |
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diff
changeset
|
1093 p2node=p2, |
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parents:
diff
changeset
|
1094 linkrev=linkrev, |
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|
1095 flags=flags, |
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|
1096 ) |
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|
1097 |
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|
1098 self._nodetorev[node] = rev |
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|
1099 self._revtonode[rev] = node |
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|
1100 self._revisions[node] = entry |
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parents:
diff
changeset
|
1101 |
46508
f7b61ad3c64a
revlog: change addrevision to return the new revision, not node
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parents:
45788
diff
changeset
|
1102 return rev |
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|
1103 |
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|
1104 |
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changeset
|
1105 class sqliterepository(localrepo.localrepository): |
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parents:
diff
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|
1106 def cancopy(self): |
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|
1107 return False |
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|
1108 |
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diff
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|
1109 def transaction(self, *args, **kwargs): |
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|
1110 current = self.currenttransaction() |
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|
1111 |
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|
1112 tr = super(sqliterepository, self).transaction(*args, **kwargs) |
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|
1113 |
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|
1114 if current: |
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|
1115 return tr |
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|
1116 |
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1117 self._dbconn.execute('BEGIN TRANSACTION') |
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1118 |
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|
1119 def committransaction(_): |
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|
1120 self._dbconn.commit() |
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|
1121 |
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|
1122 tr.addfinalize(b'sqlitestore', committransaction) |
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1123 |
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|
1124 return tr |
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|
1125 |
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|
1126 @property |
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|
1127 def _dbconn(self): |
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|
1128 # SQLite connections can only be used on the thread that created |
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|
1129 # them. In most cases, this "just works." However, hgweb uses |
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|
1130 # multiple threads. |
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|
1131 tid = threading.current_thread().ident |
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1132 |
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|
1133 if self._db: |
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|
1134 if self._db[0] == tid: |
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|
1135 return self._db[1] |
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1136 |
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1137 db = makedb(self.svfs.join(b'db.sqlite')) |
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|
1138 self._db = (tid, db) |
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diff
changeset
|
1139 |
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|
1140 return db |
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|
1141 |
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|
1142 |
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|
1143 def makedb(path): |
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diff
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|
1144 """Construct a database handle for a database at path.""" |
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parents:
diff
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|
1145 |
40410
3b782669561d
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Pulkit Goyal <pulkit@yandex-team.ru>
parents:
40392
diff
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|
1146 db = sqlite3.connect(encoding.strfromlocal(path)) |
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|
1147 db.text_factory = bytes |
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|
1148 |
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|
1149 res = db.execute('PRAGMA user_version').fetchone()[0] |
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|
1150 |
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|
1151 # New database. |
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|
1152 if res == 0: |
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parents:
diff
changeset
|
1153 for statement in CREATE_SCHEMA: |
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parents:
diff
changeset
|
1154 db.execute(statement) |
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parents:
diff
changeset
|
1155 |
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parents:
diff
changeset
|
1156 db.commit() |
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|
1157 |
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|
1158 elif res == CURRENT_SCHEMA_VERSION: |
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parents:
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|
1159 pass |
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|
1160 |
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|
1161 else: |
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|
1162 raise error.Abort(_(b'sqlite database has unrecognized version')) |
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|
1163 |
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|
1164 db.execute('PRAGMA journal_mode=WAL') |
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|
1165 |
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|
1166 return db |
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|
1167 |
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|
1168 |
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|
1169 def featuresetup(ui, supported): |
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|
1170 supported.add(REQUIREMENT) |
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|
1171 |
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|
1172 if zstd: |
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|
1173 supported.add(REQUIREMENT_ZSTD) |
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|
1174 |
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|
1175 supported.add(REQUIREMENT_ZLIB) |
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diff
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|
1176 supported.add(REQUIREMENT_NONE) |
40390
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localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
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|
1177 supported.add(REQUIREMENT_SHALLOW_FILES) |
45372
77b8588dd84e
requirements: introduce new requirements related module
Pulkit Goyal <7895pulkit@gmail.com>
parents:
44062
diff
changeset
|
1178 supported.add(requirements.NARROW_REQUIREMENT) |
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|
1179 |
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|
1180 |
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|
1181 def newreporequirements(orig, ui, createopts): |
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|
1182 if createopts[b'backend'] != b'sqlite': |
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|
1183 return orig(ui, createopts) |
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diff
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|
1184 |
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|
1185 # This restriction can be lifted once we have more confidence. |
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|
1186 if b'sharedrepo' in createopts: |
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|
1187 raise error.Abort( |
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Martin von Zweigbergk <martinvonz@google.com>
parents:
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|
1188 _(b'shared repositories not supported with SQLite store') |
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|
1189 ) |
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|
1190 |
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|
1191 # This filtering is out of an abundance of caution: we want to ensure |
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|
1192 # we honor creation options and we do that by annotating exactly the |
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|
1193 # creation options we recognize. |
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|
1194 known = { |
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|
1195 b'narrowfiles', |
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|
1196 b'backend', |
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|
1197 b'shallowfilestore', |
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|
1198 } |
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|
1199 |
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|
1200 unsupported = set(createopts) - known |
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|
1201 if unsupported: |
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|
1202 raise error.Abort( |
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|
1203 _(b'SQLite store does not support repo creation option: %s') |
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|
1204 % b', '.join(sorted(unsupported)) |
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|
1205 ) |
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1206 |
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|
1207 # Since we're a hybrid store that still relies on revlogs, we fall back |
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parents:
diff
changeset
|
1208 # to using the revlogv1 backend's storage requirements then adding our |
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diff
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|
1209 # own requirement. |
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|
1210 createopts[b'backend'] = b'revlogv1' |
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|
1211 requirements = orig(ui, createopts) |
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|
1212 requirements.add(REQUIREMENT) |
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|
1213 |
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|
1214 compression = ui.config(b'storage', b'sqlite.compression') |
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|
1215 |
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|
1216 if compression == b'zstd' and not zstd: |
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|
1217 raise error.Abort( |
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|
1218 _( |
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|
1219 b'storage.sqlite.compression set to "zstd" but ' |
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|
1220 b'zstandard compression not available to this ' |
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|
1221 b'Mercurial install' |
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|
1222 ) |
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|
1223 ) |
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|
1224 |
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|
1225 if compression == b'zstd': |
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|
1226 requirements.add(REQUIREMENT_ZSTD) |
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|
1227 elif compression == b'zlib': |
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|
1228 requirements.add(REQUIREMENT_ZLIB) |
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1229 elif compression == b'none': |
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|
1230 requirements.add(REQUIREMENT_NONE) |
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|
1231 else: |
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|
1232 raise error.Abort( |
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|
1233 _( |
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|
1234 b'unknown compression engine defined in ' |
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|
1235 b'storage.sqlite.compression: %s' |
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|
1236 ) |
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|
1237 % compression |
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|
1238 ) |
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|
1239 |
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|
1240 if createopts.get(b'shallowfilestore'): |
40390
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
1241 requirements.add(REQUIREMENT_SHALLOW_FILES) |
7e3b6c4f01a2
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|
1242 |
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|
1243 return requirements |
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|
1244 |
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|
1245 |
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|
1246 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage) |
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diff
changeset
|
1247 class sqlitefilestorage(object): |
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diff
changeset
|
1248 """Repository file storage backed by SQLite.""" |
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1249 |
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|
1250 def file(self, path): |
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|
1251 if path[0] == b'/': |
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diff
changeset
|
1252 path = path[1:] |
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changeset
|
1253 |
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diff
changeset
|
1254 if REQUIREMENT_ZSTD in self.requirements: |
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|
1255 compression = b'zstd' |
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diff
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|
1256 elif REQUIREMENT_ZLIB in self.requirements: |
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1257 compression = b'zlib' |
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1258 elif REQUIREMENT_NONE in self.requirements: |
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1259 compression = b'none' |
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1260 else: |
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1261 raise error.Abort( |
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1262 _( |
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1263 b'unable to determine what compression engine ' |
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1264 b'to use for SQLite storage' |
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1265 ) |
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1266 ) |
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1267 |
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1268 return sqlitefilestore(self._dbconn, path, compression) |
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1269 |
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1270 |
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1271 def makefilestorage(orig, requirements, features, **kwargs): |
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1272 """Produce a type conforming to ``ilocalrepositoryfilestorage``.""" |
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1273 if REQUIREMENT in requirements: |
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1274 if REQUIREMENT_SHALLOW_FILES in requirements: |
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1275 features.add(repository.REPO_FEATURE_SHALLOW_FILE_STORAGE) |
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1276 |
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1277 return sqlitefilestorage |
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1278 else: |
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1279 return orig(requirements=requirements, features=features, **kwargs) |
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1280 |
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1281 |
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1282 def makemain(orig, ui, requirements, **kwargs): |
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1283 if REQUIREMENT in requirements: |
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1284 if REQUIREMENT_ZSTD in requirements and not zstd: |
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1285 raise error.Abort( |
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1286 _( |
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1287 b'repository uses zstandard compression, which ' |
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1288 b'is not available to this Mercurial install' |
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1289 ) |
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1290 ) |
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1291 |
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1292 return sqliterepository |
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1293 |
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1294 return orig(requirements=requirements, **kwargs) |
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1295 |
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1296 |
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1297 def verifierinit(orig, self, *args, **kwargs): |
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1298 orig(self, *args, **kwargs) |
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1299 |
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1300 # We don't care that files in the store don't align with what is |
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1301 # advertised. So suppress these warnings. |
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1302 self.warnorphanstorefiles = False |
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1303 |
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1304 |
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1305 def extsetup(ui): |
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1306 localrepo.featuresetupfuncs.add(featuresetup) |
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1307 extensions.wrapfunction( |
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1308 localrepo, b'newreporequirements', newreporequirements |
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1309 ) |
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1310 extensions.wrapfunction(localrepo, b'makefilestorage', makefilestorage) |
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1311 extensions.wrapfunction(localrepo, b'makemain', makemain) |
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1312 extensions.wrapfunction(verify.verifier, b'__init__', verifierinit) |
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1313 |
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1314 |
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1315 def reposetup(ui, repo): |
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1316 if isinstance(repo, sqliterepository): |
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1317 repo._db = None |
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1318 |
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1319 # TODO check for bundlerepository? |