Mercurial > hg
annotate hgext/sqlitestore.py @ 46731:3d692e724d06
rhg: Align config file parse error formatting with Python
Differences can cause tests to fail
Differential Revision: https://phab.mercurial-scm.org/D10110
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Wed, 03 Mar 2021 19:47:48 +0100 |
parents | 45f0d5297698 |
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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 short, |
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58 ) |
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59 from mercurial.thirdparty import attr |
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60 from mercurial import ( |
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61 ancestor, |
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62 dagop, |
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63 encoding, |
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64 error, |
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65 extensions, |
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66 localrepo, |
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67 mdiff, |
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68 pycompat, |
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69 registrar, |
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70 requirements, |
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71 util, |
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72 verify, |
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73 ) |
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74 from mercurial.interfaces import ( |
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75 repository, |
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76 util as interfaceutil, |
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77 ) |
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78 from mercurial.utils import ( |
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79 hashutil, |
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80 storageutil, |
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81 ) |
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82 |
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83 try: |
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84 from mercurial import zstd |
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85 |
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86 zstd.__version__ |
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87 except ImportError: |
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88 zstd = None |
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89 |
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90 configtable = {} |
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91 configitem = registrar.configitem(configtable) |
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92 |
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93 # experimental config: storage.sqlite.compression |
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94 configitem( |
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95 b'storage', |
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96 b'sqlite.compression', |
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97 default=b'zstd' if zstd else b'zlib', |
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98 experimental=True, |
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99 ) |
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100 |
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101 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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102 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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103 # be specifying the version(s) of Mercurial they are tested with, or |
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104 # leave the attribute unspecified. |
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105 testedwith = b'ships-with-hg-core' |
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106 |
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107 REQUIREMENT = b'exp-sqlite-001' |
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108 REQUIREMENT_ZSTD = b'exp-sqlite-comp-001=zstd' |
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109 REQUIREMENT_ZLIB = b'exp-sqlite-comp-001=zlib' |
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110 REQUIREMENT_NONE = b'exp-sqlite-comp-001=none' |
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111 REQUIREMENT_SHALLOW_FILES = b'exp-sqlite-shallow-files' |
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112 |
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113 CURRENT_SCHEMA_VERSION = 1 |
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114 |
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115 COMPRESSION_NONE = 1 |
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116 COMPRESSION_ZSTD = 2 |
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117 COMPRESSION_ZLIB = 3 |
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118 |
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119 FLAG_CENSORED = 1 |
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120 FLAG_MISSING_P1 = 2 |
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121 FLAG_MISSING_P2 = 4 |
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122 |
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123 CREATE_SCHEMA = [ |
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124 # Deltas are stored as content-indexed blobs. |
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125 # compression column holds COMPRESSION_* constant for how the |
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126 # delta is encoded. |
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127 'CREATE TABLE delta (' |
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128 ' id INTEGER PRIMARY KEY, ' |
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129 ' compression INTEGER NOT NULL, ' |
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130 ' hash BLOB UNIQUE ON CONFLICT ABORT, ' |
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131 ' delta BLOB NOT NULL ' |
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132 ')', |
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133 # Tracked paths are denormalized to integers to avoid redundant |
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134 # storage of the path name. |
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135 'CREATE TABLE filepath (' |
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136 ' id INTEGER PRIMARY KEY, ' |
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137 ' path BLOB NOT NULL ' |
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138 ')', |
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139 'CREATE UNIQUE INDEX filepath_path ON filepath (path)', |
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140 # We have a single table for all file revision data. |
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141 # Each file revision is uniquely described by a (path, rev) and |
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142 # (path, node). |
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143 # |
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144 # Revision data is stored as a pointer to the delta producing this |
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145 # revision and the file revision whose delta should be applied before |
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146 # that one. One can reconstruct the delta chain by recursively following |
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147 # the delta base revision pointers until one encounters NULL. |
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148 # |
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149 # flags column holds bitwise integer flags controlling storage options. |
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150 # These flags are defined by the FLAG_* constants. |
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151 'CREATE TABLE fileindex (' |
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152 ' id INTEGER PRIMARY KEY, ' |
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153 ' pathid INTEGER REFERENCES filepath(id), ' |
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154 ' revnum INTEGER NOT NULL, ' |
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155 ' p1rev INTEGER NOT NULL, ' |
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156 ' p2rev INTEGER NOT NULL, ' |
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157 ' linkrev INTEGER NOT NULL, ' |
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158 ' flags INTEGER NOT NULL, ' |
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159 ' deltaid INTEGER REFERENCES delta(id), ' |
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160 ' deltabaseid INTEGER REFERENCES fileindex(id), ' |
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161 ' node BLOB NOT NULL ' |
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162 ')', |
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163 'CREATE UNIQUE INDEX fileindex_pathrevnum ' |
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164 ' ON fileindex (pathid, revnum)', |
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165 'CREATE UNIQUE INDEX fileindex_pathnode ON fileindex (pathid, node)', |
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166 # Provide a view over all file data for convenience. |
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167 'CREATE VIEW filedata AS ' |
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168 'SELECT ' |
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169 ' fileindex.id AS id, ' |
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170 ' filepath.id AS pathid, ' |
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171 ' filepath.path AS path, ' |
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172 ' fileindex.revnum AS revnum, ' |
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173 ' fileindex.node AS node, ' |
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174 ' fileindex.p1rev AS p1rev, ' |
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175 ' fileindex.p2rev AS p2rev, ' |
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176 ' fileindex.linkrev AS linkrev, ' |
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177 ' fileindex.flags AS flags, ' |
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178 ' fileindex.deltaid AS deltaid, ' |
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179 ' fileindex.deltabaseid AS deltabaseid ' |
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180 'FROM filepath, fileindex ' |
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181 'WHERE fileindex.pathid=filepath.id', |
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182 'PRAGMA user_version=%d' % CURRENT_SCHEMA_VERSION, |
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183 ] |
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184 |
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185 |
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186 def resolvedeltachain(db, pathid, node, revisioncache, stoprids, zstddctx=None): |
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187 """Resolve a delta chain for a file node.""" |
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188 |
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189 # TODO the "not in ({stops})" here is possibly slowing down the query |
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190 # because it needs to perform the lookup on every recursive invocation. |
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191 # This could possibly be faster if we created a temporary query with |
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192 # baseid "poisoned" to null and limited the recursive filter to |
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193 # "is not null". |
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194 res = db.execute( |
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195 'WITH RECURSIVE ' |
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196 ' deltachain(deltaid, baseid) AS (' |
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197 ' SELECT deltaid, deltabaseid FROM fileindex ' |
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198 ' WHERE pathid=? AND node=? ' |
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199 ' UNION ALL ' |
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200 ' SELECT fileindex.deltaid, deltabaseid ' |
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201 ' FROM fileindex, deltachain ' |
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202 ' WHERE ' |
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203 ' fileindex.id=deltachain.baseid ' |
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204 ' AND deltachain.baseid IS NOT NULL ' |
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205 ' AND fileindex.id NOT IN ({stops}) ' |
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206 ' ) ' |
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207 'SELECT deltachain.baseid, compression, delta ' |
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208 'FROM deltachain, delta ' |
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209 'WHERE delta.id=deltachain.deltaid'.format( |
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210 stops=','.join(['?'] * len(stoprids)) |
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211 ), |
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212 tuple([pathid, node] + list(stoprids.keys())), |
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213 ) |
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214 |
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215 deltas = [] |
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216 lastdeltabaseid = None |
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217 |
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218 for deltabaseid, compression, delta in res: |
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219 lastdeltabaseid = deltabaseid |
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220 |
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221 if compression == COMPRESSION_ZSTD: |
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222 delta = zstddctx.decompress(delta) |
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223 elif compression == COMPRESSION_NONE: |
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224 delta = delta |
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225 elif compression == COMPRESSION_ZLIB: |
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226 delta = zlib.decompress(delta) |
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227 else: |
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228 raise SQLiteStoreError( |
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229 b'unhandled compression type: %d' % compression |
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230 ) |
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231 |
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232 deltas.append(delta) |
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233 |
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234 if lastdeltabaseid in stoprids: |
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235 basetext = revisioncache[stoprids[lastdeltabaseid]] |
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236 else: |
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237 basetext = deltas.pop() |
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238 |
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239 deltas.reverse() |
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240 fulltext = mdiff.patches(basetext, deltas) |
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241 |
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242 # SQLite returns buffer instances for blob columns on Python 2. This |
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243 # type can propagate through the delta application layer. Because |
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244 # downstream callers assume revisions are bytes, cast as needed. |
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245 if not isinstance(fulltext, bytes): |
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246 fulltext = bytes(delta) |
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247 |
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248 return fulltext |
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249 |
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250 |
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251 def insertdelta(db, compression, hash, delta): |
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252 try: |
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253 return db.execute( |
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254 'INSERT INTO delta (compression, hash, delta) VALUES (?, ?, ?)', |
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255 (compression, hash, delta), |
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256 ).lastrowid |
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257 except sqlite3.IntegrityError: |
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258 return db.execute( |
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259 'SELECT id FROM delta WHERE hash=?', (hash,) |
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260 ).fetchone()[0] |
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261 |
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262 |
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263 class SQLiteStoreError(error.StorageError): |
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264 pass |
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265 |
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266 |
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267 @attr.s |
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268 class revisionentry(object): |
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269 rid = attr.ib() |
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270 rev = attr.ib() |
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271 node = attr.ib() |
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272 p1rev = attr.ib() |
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273 p2rev = attr.ib() |
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274 p1node = attr.ib() |
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275 p2node = attr.ib() |
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276 linkrev = attr.ib() |
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277 flags = attr.ib() |
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278 |
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279 |
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280 @interfaceutil.implementer(repository.irevisiondelta) |
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281 @attr.s(slots=True) |
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282 class sqliterevisiondelta(object): |
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283 node = attr.ib() |
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284 p1node = attr.ib() |
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285 p2node = attr.ib() |
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286 basenode = attr.ib() |
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287 flags = attr.ib() |
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288 baserevisionsize = attr.ib() |
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289 revision = attr.ib() |
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290 delta = attr.ib() |
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291 sidedata = attr.ib() |
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292 linknode = attr.ib(default=None) |
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293 |
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294 |
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295 @interfaceutil.implementer(repository.iverifyproblem) |
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296 @attr.s(frozen=True) |
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297 class sqliteproblem(object): |
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298 warning = attr.ib(default=None) |
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299 error = attr.ib(default=None) |
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300 node = attr.ib(default=None) |
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301 |
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302 |
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303 @interfaceutil.implementer(repository.ifilestorage) |
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304 class sqlitefilestore(object): |
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305 """Implements storage for an individual tracked path.""" |
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306 |
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307 def __init__(self, db, path, compression): |
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308 self._db = db |
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309 self._path = path |
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310 |
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311 self._pathid = None |
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312 |
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313 # revnum -> node |
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314 self._revtonode = {} |
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315 # node -> revnum |
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316 self._nodetorev = {} |
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317 # node -> data structure |
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318 self._revisions = {} |
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319 |
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320 self._revisioncache = util.lrucachedict(10) |
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321 |
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322 self._compengine = compression |
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323 |
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324 if compression == b'zstd': |
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325 self._cctx = zstd.ZstdCompressor(level=3) |
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326 self._dctx = zstd.ZstdDecompressor() |
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327 else: |
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328 self._cctx = None |
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329 self._dctx = None |
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330 |
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331 self._refreshindex() |
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332 |
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333 def _refreshindex(self): |
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334 self._revtonode = {} |
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335 self._nodetorev = {} |
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336 self._revisions = {} |
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337 |
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338 res = list( |
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339 self._db.execute( |
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340 'SELECT id FROM filepath WHERE path=?', (self._path,) |
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341 ) |
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342 ) |
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343 |
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344 if not res: |
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345 self._pathid = None |
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346 return |
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347 |
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348 self._pathid = res[0][0] |
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349 |
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350 res = self._db.execute( |
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351 'SELECT id, revnum, node, p1rev, p2rev, linkrev, flags ' |
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352 'FROM fileindex ' |
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353 'WHERE pathid=? ' |
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354 'ORDER BY revnum ASC', |
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355 (self._pathid,), |
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356 ) |
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357 |
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358 for i, row in enumerate(res): |
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359 rid, rev, node, p1rev, p2rev, linkrev, flags = row |
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360 |
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361 if i != rev: |
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362 raise SQLiteStoreError( |
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363 _(b'sqlite database has inconsistent revision numbers') |
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364 ) |
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365 |
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366 if p1rev == nullrev: |
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367 p1node = nullid |
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368 else: |
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369 p1node = self._revtonode[p1rev] |
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370 |
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371 if p2rev == nullrev: |
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372 p2node = nullid |
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373 else: |
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374 p2node = self._revtonode[p2rev] |
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375 |
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376 entry = revisionentry( |
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377 rid=rid, |
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378 rev=rev, |
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379 node=node, |
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380 p1rev=p1rev, |
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381 p2rev=p2rev, |
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382 p1node=p1node, |
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383 p2node=p2node, |
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384 linkrev=linkrev, |
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385 flags=flags, |
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386 ) |
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387 |
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388 self._revtonode[rev] = node |
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389 self._nodetorev[node] = rev |
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390 self._revisions[node] = entry |
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391 |
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392 # Start of ifileindex interface. |
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393 |
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394 def __len__(self): |
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395 return len(self._revisions) |
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396 |
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397 def __iter__(self): |
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398 return iter(pycompat.xrange(len(self._revisions))) |
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399 |
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400 def hasnode(self, node): |
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401 if node == nullid: |
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402 return False |
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403 |
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404 return node in self._nodetorev |
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405 |
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406 def revs(self, start=0, stop=None): |
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407 return storageutil.iterrevs( |
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408 len(self._revisions), start=start, stop=stop |
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409 ) |
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410 |
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411 def parents(self, node): |
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412 if node == nullid: |
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413 return nullid, nullid |
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414 |
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415 if node not in self._revisions: |
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416 raise error.LookupError(node, self._path, _(b'no node')) |
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417 |
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418 entry = self._revisions[node] |
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419 return entry.p1node, entry.p2node |
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420 |
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421 def parentrevs(self, rev): |
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422 if rev == nullrev: |
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423 return nullrev, nullrev |
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424 |
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425 if rev not in self._revtonode: |
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426 raise IndexError(rev) |
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427 |
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428 entry = self._revisions[self._revtonode[rev]] |
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429 return entry.p1rev, entry.p2rev |
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430 |
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431 def rev(self, node): |
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432 if node == nullid: |
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433 return nullrev |
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434 |
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435 if node not in self._nodetorev: |
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436 raise error.LookupError(node, self._path, _(b'no node')) |
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437 |
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438 return self._nodetorev[node] |
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439 |
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440 def node(self, rev): |
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441 if rev == nullrev: |
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442 return nullid |
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443 |
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444 if rev not in self._revtonode: |
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445 raise IndexError(rev) |
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446 |
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447 return self._revtonode[rev] |
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448 |
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449 def lookup(self, node): |
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450 return storageutil.fileidlookup(self, node, self._path) |
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451 |
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452 def linkrev(self, rev): |
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453 if rev == nullrev: |
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454 return nullrev |
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455 |
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456 if rev not in self._revtonode: |
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457 raise IndexError(rev) |
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458 |
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459 entry = self._revisions[self._revtonode[rev]] |
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460 return entry.linkrev |
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461 |
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462 def iscensored(self, rev): |
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463 if rev == nullrev: |
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464 return False |
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465 |
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466 if rev not in self._revtonode: |
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467 raise IndexError(rev) |
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468 |
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469 return self._revisions[self._revtonode[rev]].flags & FLAG_CENSORED |
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470 |
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471 def commonancestorsheads(self, node1, node2): |
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472 rev1 = self.rev(node1) |
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473 rev2 = self.rev(node2) |
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474 |
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475 ancestors = ancestor.commonancestorsheads(self.parentrevs, rev1, rev2) |
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476 return pycompat.maplist(self.node, ancestors) |
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477 |
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478 def descendants(self, revs): |
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479 # TODO we could implement this using a recursive SQL query, which |
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480 # might be faster. |
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481 return dagop.descendantrevs(revs, self.revs, self.parentrevs) |
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482 |
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483 def heads(self, start=None, stop=None): |
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484 if start is None and stop is None: |
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485 if not len(self): |
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486 return [nullid] |
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487 |
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488 startrev = self.rev(start) if start is not None else nullrev |
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489 stoprevs = {self.rev(n) for n in stop or []} |
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490 |
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491 revs = dagop.headrevssubset( |
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492 self.revs, self.parentrevs, startrev=startrev, stoprevs=stoprevs |
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493 ) |
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494 |
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495 return [self.node(rev) for rev in revs] |
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496 |
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497 def children(self, node): |
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498 rev = self.rev(node) |
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499 |
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500 res = self._db.execute( |
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501 'SELECT' |
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502 ' node ' |
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503 ' FROM filedata ' |
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504 ' WHERE path=? AND (p1rev=? OR p2rev=?) ' |
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505 ' ORDER BY revnum ASC', |
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506 (self._path, rev, rev), |
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507 ) |
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508 |
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509 return [row[0] for row in res] |
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510 |
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511 # End of ifileindex interface. |
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512 |
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513 # Start of ifiledata interface. |
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514 |
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515 def size(self, rev): |
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516 if rev == nullrev: |
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517 return 0 |
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518 |
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519 if rev not in self._revtonode: |
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520 raise IndexError(rev) |
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521 |
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522 node = self._revtonode[rev] |
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523 |
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524 if self.renamed(node): |
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525 return len(self.read(node)) |
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526 |
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527 return len(self.revision(node)) |
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528 |
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529 def revision(self, node, raw=False, _verifyhash=True): |
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530 if node in (nullid, nullrev): |
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531 return b'' |
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532 |
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533 if isinstance(node, int): |
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534 node = self.node(node) |
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535 |
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536 if node not in self._nodetorev: |
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537 raise error.LookupError(node, self._path, _(b'no node')) |
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538 |
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539 if node in self._revisioncache: |
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540 return self._revisioncache[node] |
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541 |
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542 # Because we have a fulltext revision cache, we are able to |
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543 # short-circuit delta chain traversal and decompression as soon as |
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544 # we encounter a revision in the cache. |
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545 |
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546 stoprids = {self._revisions[n].rid: n for n in self._revisioncache} |
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547 |
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548 if not stoprids: |
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549 stoprids[-1] = None |
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550 |
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551 fulltext = resolvedeltachain( |
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552 self._db, |
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553 self._pathid, |
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554 node, |
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555 self._revisioncache, |
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556 stoprids, |
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557 zstddctx=self._dctx, |
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558 ) |
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559 |
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560 # Don't verify hashes if parent nodes were rewritten, as the hash |
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561 # wouldn't verify. |
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562 if self._revisions[node].flags & (FLAG_MISSING_P1 | FLAG_MISSING_P2): |
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563 _verifyhash = False |
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564 |
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565 if _verifyhash: |
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566 self._checkhash(fulltext, node) |
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567 self._revisioncache[node] = fulltext |
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568 |
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569 return fulltext |
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570 |
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571 def rawdata(self, *args, **kwargs): |
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572 return self.revision(*args, **kwargs) |
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573 |
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574 def read(self, node): |
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575 return storageutil.filtermetadata(self.revision(node)) |
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576 |
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577 def renamed(self, node): |
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578 return storageutil.filerevisioncopied(self, node) |
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579 |
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580 def cmp(self, node, fulltext): |
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581 return not storageutil.filedataequivalent(self, node, fulltext) |
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582 |
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583 def emitrevisions( |
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584 self, |
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585 nodes, |
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586 nodesorder=None, |
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587 revisiondata=False, |
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588 assumehaveparentrevisions=False, |
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589 deltamode=repository.CG_DELTAMODE_STD, |
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590 sidedata_helpers=None, |
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591 ): |
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592 if nodesorder not in (b'nodes', b'storage', b'linear', None): |
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593 raise error.ProgrammingError( |
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594 b'unhandled value for nodesorder: %s' % nodesorder |
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595 ) |
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596 |
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597 nodes = [n for n in nodes if n != nullid] |
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598 |
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599 if not nodes: |
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|
600 return |
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|
601 |
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|
602 # TODO perform in a single query. |
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603 res = self._db.execute( |
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604 'SELECT revnum, deltaid FROM fileindex ' |
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605 'WHERE pathid=? ' |
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606 ' AND node in (%s)' % (','.join(['?'] * len(nodes))), |
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607 tuple([self._pathid] + nodes), |
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608 ) |
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609 |
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|
610 deltabases = {} |
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|
611 |
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|
612 for rev, deltaid in res: |
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|
613 res = self._db.execute( |
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614 'SELECT revnum from fileindex WHERE pathid=? AND deltaid=?', |
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615 (self._pathid, deltaid), |
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616 ) |
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617 deltabases[rev] = res.fetchone()[0] |
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618 |
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|
619 # TODO define revdifffn so we can use delta from storage. |
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|
620 for delta in storageutil.emitrevisions( |
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621 self, |
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622 nodes, |
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623 nodesorder, |
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624 sqliterevisiondelta, |
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625 deltaparentfn=deltabases.__getitem__, |
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|
626 revisiondata=revisiondata, |
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627 assumehaveparentrevisions=assumehaveparentrevisions, |
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628 deltamode=deltamode, |
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629 sidedata_helpers=sidedata_helpers, |
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630 ): |
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631 |
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|
632 yield delta |
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633 |
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634 # End of ifiledata interface. |
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635 |
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636 # Start of ifilemutation interface. |
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637 |
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638 def add(self, filedata, meta, transaction, linkrev, p1, p2): |
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639 if meta or filedata.startswith(b'\x01\n'): |
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640 filedata = storageutil.packmeta(meta, filedata) |
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641 |
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642 rev = self.addrevision(filedata, transaction, linkrev, p1, p2) |
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643 return self.node(rev) |
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644 |
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645 def addrevision( |
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646 self, |
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647 revisiondata, |
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648 transaction, |
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649 linkrev, |
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650 p1, |
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651 p2, |
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652 node=None, |
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653 flags=0, |
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654 cachedelta=None, |
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655 ): |
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656 if flags: |
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657 raise SQLiteStoreError(_(b'flags not supported on revisions')) |
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658 |
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659 validatehash = node is not None |
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660 node = node or storageutil.hashrevisionsha1(revisiondata, p1, p2) |
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661 |
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662 if validatehash: |
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663 self._checkhash(revisiondata, node, p1, p2) |
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664 |
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665 rev = self._nodetorev.get(node) |
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666 if rev is not None: |
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667 return rev |
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668 |
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669 rev = self._addrawrevision( |
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670 node, revisiondata, transaction, linkrev, p1, p2 |
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671 ) |
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672 |
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673 self._revisioncache[node] = revisiondata |
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674 return rev |
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675 |
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676 def addgroup( |
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677 self, |
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678 deltas, |
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679 linkmapper, |
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680 transaction, |
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681 addrevisioncb=None, |
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682 duplicaterevisioncb=None, |
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683 maybemissingparents=False, |
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684 ): |
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685 empty = True |
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686 |
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687 for ( |
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688 node, |
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689 p1, |
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690 p2, |
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691 linknode, |
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692 deltabase, |
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693 delta, |
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694 wireflags, |
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695 sidedata, |
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696 ) in deltas: |
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697 storeflags = 0 |
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698 |
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699 if wireflags & repository.REVISION_FLAG_CENSORED: |
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700 storeflags |= FLAG_CENSORED |
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701 |
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702 if wireflags & ~repository.REVISION_FLAG_CENSORED: |
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703 raise SQLiteStoreError(b'unhandled revision flag') |
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704 |
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705 if maybemissingparents: |
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706 if p1 != nullid and not self.hasnode(p1): |
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707 p1 = nullid |
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708 storeflags |= FLAG_MISSING_P1 |
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709 |
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710 if p2 != nullid and not self.hasnode(p2): |
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711 p2 = nullid |
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712 storeflags |= FLAG_MISSING_P2 |
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713 |
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714 baserev = self.rev(deltabase) |
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715 |
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716 # If base is censored, delta must be full replacement in a single |
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717 # patch operation. |
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718 if baserev != nullrev and self.iscensored(baserev): |
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719 hlen = struct.calcsize(b'>lll') |
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720 oldlen = len(self.rawdata(deltabase, _verifyhash=False)) |
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721 newlen = len(delta) - hlen |
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722 |
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723 if delta[:hlen] != mdiff.replacediffheader(oldlen, newlen): |
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724 raise error.CensoredBaseError(self._path, deltabase) |
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725 |
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726 if not (storeflags & FLAG_CENSORED) and storageutil.deltaiscensored( |
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727 delta, baserev, lambda x: len(self.rawdata(x)) |
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728 ): |
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729 storeflags |= FLAG_CENSORED |
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730 |
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731 linkrev = linkmapper(linknode) |
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732 |
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733 if node in self._revisions: |
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734 # Possibly reset parents to make them proper. |
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735 entry = self._revisions[node] |
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736 |
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737 if entry.flags & FLAG_MISSING_P1 and p1 != nullid: |
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738 entry.p1node = p1 |
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739 entry.p1rev = self._nodetorev[p1] |
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740 entry.flags &= ~FLAG_MISSING_P1 |
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741 |
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|
742 self._db.execute( |
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743 'UPDATE fileindex SET p1rev=?, flags=? WHERE id=?', |
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744 (self._nodetorev[p1], entry.flags, entry.rid), |
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745 ) |
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746 |
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747 if entry.flags & FLAG_MISSING_P2 and p2 != nullid: |
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|
748 entry.p2node = p2 |
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|
749 entry.p2rev = self._nodetorev[p2] |
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|
750 entry.flags &= ~FLAG_MISSING_P2 |
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751 |
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|
752 self._db.execute( |
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|
753 'UPDATE fileindex SET p2rev=?, flags=? WHERE id=?', |
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754 (self._nodetorev[p1], entry.flags, entry.rid), |
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755 ) |
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756 |
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757 if duplicaterevisioncb: |
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758 duplicaterevisioncb(self, self.rev(node)) |
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759 empty = False |
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760 continue |
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761 |
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762 if deltabase == nullid: |
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763 text = mdiff.patch(b'', delta) |
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764 storedelta = None |
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765 else: |
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766 text = None |
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767 storedelta = (deltabase, delta) |
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768 |
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769 rev = self._addrawrevision( |
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770 node, |
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771 text, |
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772 transaction, |
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773 linkrev, |
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774 p1, |
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775 p2, |
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776 storedelta=storedelta, |
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777 flags=storeflags, |
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778 ) |
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779 |
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780 if addrevisioncb: |
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781 addrevisioncb(self, rev) |
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782 empty = False |
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783 |
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784 return not empty |
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785 |
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786 def censorrevision(self, tr, censornode, tombstone=b''): |
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787 tombstone = storageutil.packmeta({b'censored': tombstone}, b'') |
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788 |
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789 # This restriction is cargo culted from revlogs and makes no sense for |
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790 # SQLite, since columns can be resized at will. |
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791 if len(tombstone) > len(self.rawdata(censornode)): |
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792 raise error.Abort( |
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793 _(b'censor tombstone must be no longer than censored data') |
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794 ) |
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795 |
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796 # We need to replace the censored revision's data with the tombstone. |
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797 # But replacing that data will have implications for delta chains that |
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798 # reference it. |
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799 # |
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800 # While "better," more complex strategies are possible, we do something |
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801 # simple: we find delta chain children of the censored revision and we |
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802 # replace those incremental deltas with fulltexts of their corresponding |
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803 # revision. Then we delete the now-unreferenced delta and original |
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804 # revision and insert a replacement. |
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805 |
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806 # Find the delta to be censored. |
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807 censoreddeltaid = self._db.execute( |
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808 'SELECT deltaid FROM fileindex WHERE id=?', |
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809 (self._revisions[censornode].rid,), |
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810 ).fetchone()[0] |
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811 |
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812 # Find all its delta chain children. |
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813 # TODO once we support storing deltas for !files, we'll need to look |
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814 # for those delta chains too. |
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815 rows = list( |
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816 self._db.execute( |
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817 'SELECT id, pathid, node FROM fileindex ' |
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818 'WHERE deltabaseid=? OR deltaid=?', |
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819 (censoreddeltaid, censoreddeltaid), |
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820 ) |
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821 ) |
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822 |
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823 for row in rows: |
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824 rid, pathid, node = row |
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825 |
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826 fulltext = resolvedeltachain( |
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827 self._db, pathid, node, {}, {-1: None}, zstddctx=self._dctx |
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828 ) |
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829 |
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830 deltahash = hashutil.sha1(fulltext).digest() |
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831 |
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832 if self._compengine == b'zstd': |
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833 deltablob = self._cctx.compress(fulltext) |
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834 compression = COMPRESSION_ZSTD |
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835 elif self._compengine == b'zlib': |
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836 deltablob = zlib.compress(fulltext) |
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837 compression = COMPRESSION_ZLIB |
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838 elif self._compengine == b'none': |
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839 deltablob = fulltext |
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840 compression = COMPRESSION_NONE |
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841 else: |
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842 raise error.ProgrammingError( |
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843 b'unhandled compression engine: %s' % self._compengine |
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844 ) |
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845 |
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846 if len(deltablob) >= len(fulltext): |
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|
847 deltablob = fulltext |
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848 compression = COMPRESSION_NONE |
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849 |
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850 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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851 |
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852 self._db.execute( |
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853 'UPDATE fileindex SET deltaid=?, deltabaseid=NULL ' |
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854 'WHERE id=?', |
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855 (deltaid, rid), |
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856 ) |
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857 |
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858 # Now create the tombstone delta and replace the delta on the censored |
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859 # node. |
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860 deltahash = hashutil.sha1(tombstone).digest() |
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861 tombstonedeltaid = insertdelta( |
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862 self._db, COMPRESSION_NONE, deltahash, tombstone |
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863 ) |
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864 |
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865 flags = self._revisions[censornode].flags |
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|
866 flags |= FLAG_CENSORED |
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867 |
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868 self._db.execute( |
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869 'UPDATE fileindex SET flags=?, deltaid=?, deltabaseid=NULL ' |
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870 'WHERE pathid=? AND node=?', |
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871 (flags, tombstonedeltaid, self._pathid, censornode), |
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872 ) |
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873 |
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874 self._db.execute('DELETE FROM delta WHERE id=?', (censoreddeltaid,)) |
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875 |
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|
876 self._refreshindex() |
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|
877 self._revisioncache.clear() |
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878 |
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|
879 def getstrippoint(self, minlink): |
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
880 return storageutil.resolvestripinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
881 minlink, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
882 len(self) - 1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
883 [self.rev(n) for n in self.heads()], |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
884 self.linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
885 self.parentrevs, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
886 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
887 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
888 def strip(self, minlink, transaction): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
889 if not len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
890 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
891 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
892 rev, _ignored = self.getstrippoint(minlink) |
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 if rev == len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
895 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
896 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
897 for rev in self.revs(rev): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
898 self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
899 'DELETE FROM fileindex WHERE pathid=? AND node=?', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
900 (self._pathid, self.node(rev)), |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
901 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
902 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
903 # 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
|
904 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
905 self._refreshindex() |
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 # End of ifilemutation interface. |
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 # Start of ifilestorage 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 def files(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
912 return [] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
913 |
46712
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
914 def sidedata(self, nodeorrev, _df=None): |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
915 # Not supported for now |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
916 return {} |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
917 |
43076
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
918 def storageinfo( |
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parents:
42814
diff
changeset
|
919 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
920 exclusivefiles=False, |
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
921 sharedfiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
922 revisionscount=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
923 trackedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
924 storedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
925 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
926 d = {} |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
927 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
928 if exclusivefiles: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
929 d[b'exclusivefiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
930 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
931 if sharedfiles: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
932 # 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
|
933 d[b'sharedfiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
934 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
935 if revisionscount: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
936 d[b'revisionscount'] = len(self) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
937 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
938 if trackedsize: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
939 d[b'trackedsize'] = sum( |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
940 len(self.revision(node)) for node in self._nodetorev |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
941 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
942 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
943 if storedsize: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
944 # TODO implement this? |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
945 d[b'storedsize'] = None |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
946 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
947 return d |
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 def verifyintegrity(self, state): |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
950 state[b'skipread'] = set() |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
951 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
952 for rev in self: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
953 node = self.node(rev) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
954 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
955 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
956 self.revision(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
957 except Exception as e: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
958 yield sqliteproblem( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
959 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
|
960 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
961 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
962 state[b'skipread'].add(node) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
963 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
964 # End of ifilestorage interface. |
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 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
|
967 if p1 is None and p2 is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
968 p1, p2 = self.parents(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
969 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
970 if node == storageutil.hashrevisionsha1(fulltext, p1, p2): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
971 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
972 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
973 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
974 del self._revisioncache[node] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
975 except KeyError: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
976 pass |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
977 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
978 if storageutil.iscensoredtext(fulltext): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
979 raise error.CensoredNodeError(self._path, node, fulltext) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
980 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
981 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
|
982 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
983 def _addrawrevision( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
984 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
985 node, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
986 revisiondata, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
987 transaction, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
988 linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
989 p1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
990 p2, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
991 storedelta=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
992 flags=0, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
993 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
994 if self._pathid is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
995 res = self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
996 'INSERT INTO filepath (path) VALUES (?)', (self._path,) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
997 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
998 self._pathid = res.lastrowid |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
999 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1000 # For simplicity, always store a delta against p1. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1001 # 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
|
1002 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1003 if storedelta: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1004 deltabase, delta = storedelta |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1005 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1006 if isinstance(deltabase, int): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1007 deltabase = self.node(deltabase) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1008 |
fed697fa1734
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|
1009 else: |
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diff
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|
1010 assert revisiondata is not None |
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parents:
diff
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|
1011 deltabase = p1 |
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diff
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|
1012 |
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|
1013 if deltabase == nullid: |
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diff
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|
1014 delta = revisiondata |
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|
1015 else: |
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1016 delta = mdiff.textdiff( |
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1017 self.revision(self.rev(deltabase)), revisiondata |
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1018 ) |
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1019 |
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1020 # File index stores a pointer to its delta and the parent delta. |
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1021 # The parent delta is stored via a pointer to the fileindex PK. |
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1022 if deltabase == nullid: |
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diff
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|
1023 baseid = None |
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diff
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|
1024 else: |
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1025 baseid = self._revisions[deltabase].rid |
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1026 |
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1027 # Deltas are stored with a hash of their content. This allows |
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1028 # us to de-duplicate. The table is configured to ignore conflicts |
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1029 # and it is faster to just insert and silently noop than to look |
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1030 # first. |
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1031 deltahash = hashutil.sha1(delta).digest() |
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1032 |
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1033 if self._compengine == b'zstd': |
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1034 deltablob = self._cctx.compress(delta) |
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1035 compression = COMPRESSION_ZSTD |
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1036 elif self._compengine == b'zlib': |
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1037 deltablob = zlib.compress(delta) |
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1038 compression = COMPRESSION_ZLIB |
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1039 elif self._compengine == b'none': |
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|
1040 deltablob = delta |
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|
1041 compression = COMPRESSION_NONE |
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|
1042 else: |
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|
1043 raise error.ProgrammingError( |
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|
1044 b'unhandled compression engine: %s' % self._compengine |
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1045 ) |
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1046 |
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1047 # Don't store compressed data if it isn't practical. |
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1048 if len(deltablob) >= len(delta): |
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diff
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|
1049 deltablob = delta |
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|
1050 compression = COMPRESSION_NONE |
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|
1051 |
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|
1052 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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1053 |
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|
1054 rev = len(self) |
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|
1055 |
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|
1056 if p1 == nullid: |
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diff
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|
1057 p1rev = nullrev |
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1058 else: |
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1059 p1rev = self._nodetorev[p1] |
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1060 |
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1061 if p2 == nullid: |
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|
1062 p2rev = nullrev |
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|
1063 else: |
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1064 p2rev = self._nodetorev[p2] |
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|
1065 |
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|
1066 rid = self._db.execute( |
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|
1067 'INSERT INTO fileindex (' |
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|
1068 ' pathid, revnum, node, p1rev, p2rev, linkrev, flags, ' |
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|
1069 ' deltaid, deltabaseid) ' |
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|
1070 ' VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)', |
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|
1071 ( |
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|
1072 self._pathid, |
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|
1073 rev, |
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|
1074 node, |
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|
1075 p1rev, |
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|
1076 p2rev, |
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|
1077 linkrev, |
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|
1078 flags, |
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|
1079 deltaid, |
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|
1080 baseid, |
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|
1081 ), |
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diff
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|
1082 ).lastrowid |
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diff
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|
1083 |
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parents:
diff
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|
1084 entry = revisionentry( |
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diff
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|
1085 rid=rid, |
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diff
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|
1086 rev=rev, |
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diff
changeset
|
1087 node=node, |
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diff
changeset
|
1088 p1rev=p1rev, |
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parents:
diff
changeset
|
1089 p2rev=p2rev, |
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parents:
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|
1090 p1node=p1, |
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changeset
|
1091 p2node=p2, |
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diff
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|
1092 linkrev=linkrev, |
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|
1093 flags=flags, |
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1094 ) |
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|
1095 |
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|
1096 self._nodetorev[node] = rev |
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|
1097 self._revtonode[rev] = node |
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|
1098 self._revisions[node] = entry |
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diff
changeset
|
1099 |
46508
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parents:
45788
diff
changeset
|
1100 return rev |
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|
1101 |
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|
1102 |
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|
1103 class sqliterepository(localrepo.localrepository): |
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parents:
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|
1104 def cancopy(self): |
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|
1105 return False |
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|
1106 |
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diff
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|
1107 def transaction(self, *args, **kwargs): |
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1108 current = self.currenttransaction() |
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|
1109 |
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|
1110 tr = super(sqliterepository, self).transaction(*args, **kwargs) |
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1111 |
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|
1112 if current: |
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|
1113 return tr |
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|
1114 |
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1115 self._dbconn.execute('BEGIN TRANSACTION') |
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1116 |
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|
1117 def committransaction(_): |
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|
1118 self._dbconn.commit() |
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|
1119 |
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1120 tr.addfinalize(b'sqlitestore', committransaction) |
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1121 |
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|
1122 return tr |
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|
1123 |
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|
1124 @property |
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|
1125 def _dbconn(self): |
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|
1126 # SQLite connections can only be used on the thread that created |
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|
1127 # them. In most cases, this "just works." However, hgweb uses |
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1128 # multiple threads. |
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|
1129 tid = threading.current_thread().ident |
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1130 |
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1131 if self._db: |
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|
1132 if self._db[0] == tid: |
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|
1133 return self._db[1] |
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|
1134 |
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1135 db = makedb(self.svfs.join(b'db.sqlite')) |
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|
1136 self._db = (tid, db) |
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|
1137 |
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|
1138 return db |
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|
1139 |
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1140 |
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|
1141 def makedb(path): |
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diff
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|
1142 """Construct a database handle for a database at path.""" |
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parents:
diff
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|
1143 |
40410
3b782669561d
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Pulkit Goyal <pulkit@yandex-team.ru>
parents:
40392
diff
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|
1144 db = sqlite3.connect(encoding.strfromlocal(path)) |
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1145 db.text_factory = bytes |
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|
1146 |
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1147 res = db.execute('PRAGMA user_version').fetchone()[0] |
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|
1148 |
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|
1149 # New database. |
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|
1150 if res == 0: |
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diff
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|
1151 for statement in CREATE_SCHEMA: |
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parents:
diff
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|
1152 db.execute(statement) |
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|
1153 |
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|
1154 db.commit() |
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|
1155 |
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|
1156 elif res == CURRENT_SCHEMA_VERSION: |
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|
1157 pass |
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|
1158 |
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|
1159 else: |
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1160 raise error.Abort(_(b'sqlite database has unrecognized version')) |
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|
1161 |
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|
1162 db.execute('PRAGMA journal_mode=WAL') |
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|
1163 |
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|
1164 return db |
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|
1165 |
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1166 |
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1167 def featuresetup(ui, supported): |
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|
1168 supported.add(REQUIREMENT) |
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|
1169 |
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1170 if zstd: |
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|
1171 supported.add(REQUIREMENT_ZSTD) |
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|
1172 |
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|
1173 supported.add(REQUIREMENT_ZLIB) |
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|
1174 supported.add(REQUIREMENT_NONE) |
40390
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
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|
1175 supported.add(REQUIREMENT_SHALLOW_FILES) |
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requirements: introduce new requirements related module
Pulkit Goyal <7895pulkit@gmail.com>
parents:
44062
diff
changeset
|
1176 supported.add(requirements.NARROW_REQUIREMENT) |
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|
1177 |
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|
1178 |
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|
1179 def newreporequirements(orig, ui, createopts): |
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|
1180 if createopts[b'backend'] != b'sqlite': |
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|
1181 return orig(ui, createopts) |
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|
1182 |
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|
1183 # This restriction can be lifted once we have more confidence. |
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|
1184 if b'sharedrepo' in createopts: |
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|
1185 raise error.Abort( |
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|
1186 _(b'shared repositories not supported with SQLite store') |
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|
1187 ) |
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|
1188 |
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|
1189 # This filtering is out of an abundance of caution: we want to ensure |
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|
1190 # we honor creation options and we do that by annotating exactly the |
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|
1191 # creation options we recognize. |
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|
1192 known = { |
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1193 b'narrowfiles', |
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|
1194 b'backend', |
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|
1195 b'shallowfilestore', |
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|
1196 } |
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|
1197 |
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|
1198 unsupported = set(createopts) - known |
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|
1199 if unsupported: |
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|
1200 raise error.Abort( |
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|
1201 _(b'SQLite store does not support repo creation option: %s') |
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|
1202 % b', '.join(sorted(unsupported)) |
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|
1203 ) |
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1204 |
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|
1205 # Since we're a hybrid store that still relies on revlogs, we fall back |
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|
1206 # to using the revlogv1 backend's storage requirements then adding our |
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diff
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|
1207 # own requirement. |
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|
1208 createopts[b'backend'] = b'revlogv1' |
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|
1209 requirements = orig(ui, createopts) |
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|
1210 requirements.add(REQUIREMENT) |
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|
1211 |
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|
1212 compression = ui.config(b'storage', b'sqlite.compression') |
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|
1213 |
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|
1214 if compression == b'zstd' and not zstd: |
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|
1215 raise error.Abort( |
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|
1216 _( |
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|
1217 b'storage.sqlite.compression set to "zstd" but ' |
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|
1218 b'zstandard compression not available to this ' |
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|
1219 b'Mercurial install' |
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|
1220 ) |
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|
1221 ) |
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1222 |
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|
1223 if compression == b'zstd': |
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|
1224 requirements.add(REQUIREMENT_ZSTD) |
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1225 elif compression == b'zlib': |
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|
1226 requirements.add(REQUIREMENT_ZLIB) |
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1227 elif compression == b'none': |
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|
1228 requirements.add(REQUIREMENT_NONE) |
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|
1229 else: |
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|
1230 raise error.Abort( |
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|
1231 _( |
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|
1232 b'unknown compression engine defined in ' |
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|
1233 b'storage.sqlite.compression: %s' |
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|
1234 ) |
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|
1235 % compression |
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1236 ) |
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1237 |
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|
1238 if createopts.get(b'shallowfilestore'): |
40390
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|
1239 requirements.add(REQUIREMENT_SHALLOW_FILES) |
7e3b6c4f01a2
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|
1240 |
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|
1241 return requirements |
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|
1242 |
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1243 |
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|
1244 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage) |
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diff
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|
1245 class sqlitefilestorage(object): |
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diff
changeset
|
1246 """Repository file storage backed by SQLite.""" |
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1247 |
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|
1248 def file(self, path): |
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|
1249 if path[0] == b'/': |
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|
1250 path = path[1:] |
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|
1251 |
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|
1252 if REQUIREMENT_ZSTD in self.requirements: |
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|
1253 compression = b'zstd' |
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|
1254 elif REQUIREMENT_ZLIB in self.requirements: |
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1255 compression = b'zlib' |
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|
1256 elif REQUIREMENT_NONE in self.requirements: |
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1257 compression = b'none' |
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1258 else: |
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1259 raise error.Abort( |
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1260 _( |
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1261 b'unable to determine what compression engine ' |
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1262 b'to use for SQLite storage' |
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1263 ) |
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1264 ) |
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1265 |
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1266 return sqlitefilestore(self._dbconn, path, compression) |
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1267 |
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1268 |
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1269 def makefilestorage(orig, requirements, features, **kwargs): |
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1270 """Produce a type conforming to ``ilocalrepositoryfilestorage``.""" |
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1271 if REQUIREMENT in requirements: |
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1272 if REQUIREMENT_SHALLOW_FILES in requirements: |
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1273 features.add(repository.REPO_FEATURE_SHALLOW_FILE_STORAGE) |
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1274 |
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1275 return sqlitefilestorage |
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1276 else: |
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1277 return orig(requirements=requirements, features=features, **kwargs) |
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1278 |
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1279 |
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1280 def makemain(orig, ui, requirements, **kwargs): |
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1281 if REQUIREMENT in requirements: |
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1282 if REQUIREMENT_ZSTD in requirements and not zstd: |
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1283 raise error.Abort( |
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1284 _( |
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1285 b'repository uses zstandard compression, which ' |
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1286 b'is not available to this Mercurial install' |
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1287 ) |
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1288 ) |
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1289 |
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1290 return sqliterepository |
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1291 |
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1292 return orig(requirements=requirements, **kwargs) |
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1293 |
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1294 |
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1295 def verifierinit(orig, self, *args, **kwargs): |
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1296 orig(self, *args, **kwargs) |
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1297 |
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1298 # We don't care that files in the store don't align with what is |
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1299 # advertised. So suppress these warnings. |
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1300 self.warnorphanstorefiles = False |
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1301 |
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1302 |
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1303 def extsetup(ui): |
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1304 localrepo.featuresetupfuncs.add(featuresetup) |
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1305 extensions.wrapfunction( |
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1306 localrepo, b'newreporequirements', newreporequirements |
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1307 ) |
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1308 extensions.wrapfunction(localrepo, b'makefilestorage', makefilestorage) |
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1309 extensions.wrapfunction(localrepo, b'makemain', makemain) |
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1310 extensions.wrapfunction(verify.verifier, b'__init__', verifierinit) |
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1311 |
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1312 |
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1313 def reposetup(ui, repo): |
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1314 if isinstance(repo, sqliterepository): |
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1315 repo._db = None |
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1316 |
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1317 # TODO check for bundlerepository? |