Mercurial > hg
annotate hgext/sqlitestore.py @ 46604:ad107ed7a4aa
ci: test real dependency installation for pip
In the past, the pip smoke test inhibited actual dependency
installation, but that fails in different environments for setuptools
itself. Since it isn't what we actually want to test (which is pip
install), allow this to call home, if HGTESTS_ALLOW_NETIO=1 is set
in the environment.
Differential Revision: https://phab.mercurial-scm.org/D9950
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Thu, 04 Feb 2021 23:23:35 +0100 |
parents | 7a93b7b3dc2d |
children | a41565bef69f |
rev | line source |
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1 # sqlitestore.py - Storage backend that uses SQLite |
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2 # |
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3 # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 """store repository data in SQLite (EXPERIMENTAL) |
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9 |
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10 The sqlitestore extension enables the storage of repository data in SQLite. |
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11 |
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12 This extension is HIGHLY EXPERIMENTAL. There are NO BACKWARDS COMPATIBILITY |
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13 GUARANTEES. This means that repositories created with this extension may |
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14 only be usable with the exact version of this extension/Mercurial that was |
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15 used. The extension attempts to enforce this in order to prevent repository |
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16 corruption. |
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17 |
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18 In addition, several features are not yet supported or have known bugs: |
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19 |
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20 * Only some data is stored in SQLite. Changeset, manifest, and other repository |
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21 data is not yet stored in SQLite. |
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22 * Transactions are not robust. If the process is aborted at the right time |
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23 during transaction close/rollback, the repository could be in an inconsistent |
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24 state. This problem will diminish once all repository data is tracked by |
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25 SQLite. |
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26 * Bundle repositories do not work (the ability to use e.g. |
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27 `hg -R <bundle-file> log` to automatically overlay a bundle on top of the |
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28 existing repository). |
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29 * Various other features don't work. |
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30 |
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31 This extension should work for basic clone/pull, update, and commit workflows. |
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32 Some history rewriting operations may fail due to lack of support for bundle |
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33 repositories. |
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34 |
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35 To use, activate the extension and set the ``storage.new-repo-backend`` config |
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36 option to ``sqlite`` to enable new repositories to use SQLite for storage. |
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37 """ |
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38 |
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39 # To run the test suite with repos using SQLite by default, execute the |
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40 # following: |
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41 # |
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42 # HGREPOFEATURES="sqlitestore" run-tests.py \ |
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43 # --extra-config-opt extensions.sqlitestore= \ |
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44 # --extra-config-opt storage.new-repo-backend=sqlite |
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45 |
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46 from __future__ import absolute_import |
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47 |
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48 import sqlite3 |
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49 import struct |
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50 import threading |
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51 import zlib |
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52 |
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53 from mercurial.i18n import _ |
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54 from mercurial.node import ( |
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55 nullid, |
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56 nullrev, |
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57 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 linknode = attr.ib(default=None) |
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292 |
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293 |
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294 @interfaceutil.implementer(repository.iverifyproblem) |
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295 @attr.s(frozen=True) |
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296 class sqliteproblem(object): |
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297 warning = attr.ib(default=None) |
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298 error = attr.ib(default=None) |
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299 node = attr.ib(default=None) |
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300 |
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301 |
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302 @interfaceutil.implementer(repository.ifilestorage) |
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303 class sqlitefilestore(object): |
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304 """Implements storage for an individual tracked path.""" |
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305 |
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306 def __init__(self, db, path, compression): |
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307 self._db = db |
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308 self._path = path |
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309 |
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310 self._pathid = None |
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311 |
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312 # revnum -> node |
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313 self._revtonode = {} |
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314 # node -> revnum |
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315 self._nodetorev = {} |
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316 # node -> data structure |
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317 self._revisions = {} |
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318 |
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319 self._revisioncache = util.lrucachedict(10) |
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320 |
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321 self._compengine = compression |
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322 |
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323 if compression == b'zstd': |
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324 self._cctx = zstd.ZstdCompressor(level=3) |
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325 self._dctx = zstd.ZstdDecompressor() |
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326 else: |
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327 self._cctx = None |
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328 self._dctx = None |
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329 |
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330 self._refreshindex() |
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331 |
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332 def _refreshindex(self): |
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333 self._revtonode = {} |
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334 self._nodetorev = {} |
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335 self._revisions = {} |
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336 |
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337 res = list( |
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338 self._db.execute( |
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339 'SELECT id FROM filepath WHERE path=?', (self._path,) |
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340 ) |
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341 ) |
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342 |
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343 if not res: |
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344 self._pathid = None |
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345 return |
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346 |
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347 self._pathid = res[0][0] |
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348 |
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349 res = self._db.execute( |
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350 'SELECT id, revnum, node, p1rev, p2rev, linkrev, flags ' |
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351 'FROM fileindex ' |
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352 'WHERE pathid=? ' |
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353 'ORDER BY revnum ASC', |
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354 (self._pathid,), |
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355 ) |
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356 |
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357 for i, row in enumerate(res): |
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358 rid, rev, node, p1rev, p2rev, linkrev, flags = row |
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359 |
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360 if i != rev: |
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361 raise SQLiteStoreError( |
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362 _(b'sqlite database has inconsistent revision numbers') |
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363 ) |
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364 |
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365 if p1rev == nullrev: |
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366 p1node = nullid |
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367 else: |
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368 p1node = self._revtonode[p1rev] |
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369 |
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370 if p2rev == nullrev: |
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371 p2node = nullid |
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372 else: |
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373 p2node = self._revtonode[p2rev] |
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374 |
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375 entry = revisionentry( |
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376 rid=rid, |
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377 rev=rev, |
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378 node=node, |
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379 p1rev=p1rev, |
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380 p2rev=p2rev, |
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381 p1node=p1node, |
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382 p2node=p2node, |
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383 linkrev=linkrev, |
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384 flags=flags, |
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385 ) |
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386 |
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387 self._revtonode[rev] = node |
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388 self._nodetorev[node] = rev |
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389 self._revisions[node] = entry |
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390 |
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391 # Start of ifileindex interface. |
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392 |
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393 def __len__(self): |
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394 return len(self._revisions) |
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395 |
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396 def __iter__(self): |
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397 return iter(pycompat.xrange(len(self._revisions))) |
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398 |
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399 def hasnode(self, node): |
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400 if node == nullid: |
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401 return False |
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402 |
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403 return node in self._nodetorev |
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404 |
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405 def revs(self, start=0, stop=None): |
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406 return storageutil.iterrevs( |
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407 len(self._revisions), start=start, stop=stop |
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408 ) |
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409 |
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410 def parents(self, node): |
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411 if node == nullid: |
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412 return nullid, nullid |
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413 |
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414 if node not in self._revisions: |
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415 raise error.LookupError(node, self._path, _(b'no node')) |
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416 |
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417 entry = self._revisions[node] |
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418 return entry.p1node, entry.p2node |
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419 |
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420 def parentrevs(self, rev): |
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421 if rev == nullrev: |
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422 return nullrev, nullrev |
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423 |
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424 if rev not in self._revtonode: |
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425 raise IndexError(rev) |
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426 |
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427 entry = self._revisions[self._revtonode[rev]] |
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428 return entry.p1rev, entry.p2rev |
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429 |
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430 def rev(self, node): |
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431 if node == nullid: |
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432 return nullrev |
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433 |
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434 if node not in self._nodetorev: |
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435 raise error.LookupError(node, self._path, _(b'no node')) |
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436 |
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437 return self._nodetorev[node] |
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438 |
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439 def node(self, rev): |
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440 if rev == nullrev: |
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441 return nullid |
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442 |
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443 if rev not in self._revtonode: |
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444 raise IndexError(rev) |
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445 |
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446 return self._revtonode[rev] |
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447 |
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448 def lookup(self, node): |
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449 return storageutil.fileidlookup(self, node, self._path) |
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450 |
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451 def linkrev(self, rev): |
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452 if rev == nullrev: |
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453 return nullrev |
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454 |
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455 if rev not in self._revtonode: |
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456 raise IndexError(rev) |
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457 |
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458 entry = self._revisions[self._revtonode[rev]] |
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459 return entry.linkrev |
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460 |
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461 def iscensored(self, rev): |
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462 if rev == nullrev: |
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463 return False |
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464 |
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465 if rev not in self._revtonode: |
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|
466 raise IndexError(rev) |
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467 |
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468 return self._revisions[self._revtonode[rev]].flags & FLAG_CENSORED |
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469 |
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470 def commonancestorsheads(self, node1, node2): |
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471 rev1 = self.rev(node1) |
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472 rev2 = self.rev(node2) |
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473 |
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474 ancestors = ancestor.commonancestorsheads(self.parentrevs, rev1, rev2) |
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475 return pycompat.maplist(self.node, ancestors) |
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476 |
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477 def descendants(self, revs): |
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478 # TODO we could implement this using a recursive SQL query, which |
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479 # might be faster. |
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480 return dagop.descendantrevs(revs, self.revs, self.parentrevs) |
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481 |
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482 def heads(self, start=None, stop=None): |
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483 if start is None and stop is None: |
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484 if not len(self): |
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485 return [nullid] |
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486 |
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487 startrev = self.rev(start) if start is not None else nullrev |
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488 stoprevs = {self.rev(n) for n in stop or []} |
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489 |
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490 revs = dagop.headrevssubset( |
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491 self.revs, self.parentrevs, startrev=startrev, stoprevs=stoprevs |
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492 ) |
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493 |
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494 return [self.node(rev) for rev in revs] |
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495 |
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496 def children(self, node): |
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497 rev = self.rev(node) |
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498 |
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499 res = self._db.execute( |
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500 'SELECT' |
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501 ' node ' |
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502 ' FROM filedata ' |
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503 ' WHERE path=? AND (p1rev=? OR p2rev=?) ' |
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504 ' ORDER BY revnum ASC', |
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505 (self._path, rev, rev), |
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506 ) |
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507 |
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508 return [row[0] for row in res] |
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509 |
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510 # End of ifileindex interface. |
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511 |
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512 # Start of ifiledata interface. |
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513 |
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514 def size(self, rev): |
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515 if rev == nullrev: |
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516 return 0 |
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517 |
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518 if rev not in self._revtonode: |
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519 raise IndexError(rev) |
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520 |
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521 node = self._revtonode[rev] |
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522 |
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523 if self.renamed(node): |
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524 return len(self.read(node)) |
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525 |
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526 return len(self.revision(node)) |
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527 |
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528 def revision(self, node, raw=False, _verifyhash=True): |
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529 if node in (nullid, nullrev): |
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530 return b'' |
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531 |
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532 if isinstance(node, int): |
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533 node = self.node(node) |
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534 |
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535 if node not in self._nodetorev: |
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536 raise error.LookupError(node, self._path, _(b'no node')) |
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537 |
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538 if node in self._revisioncache: |
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539 return self._revisioncache[node] |
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540 |
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541 # Because we have a fulltext revision cache, we are able to |
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542 # short-circuit delta chain traversal and decompression as soon as |
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543 # we encounter a revision in the cache. |
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544 |
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545 stoprids = {self._revisions[n].rid: n for n in self._revisioncache} |
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546 |
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547 if not stoprids: |
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548 stoprids[-1] = None |
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549 |
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550 fulltext = resolvedeltachain( |
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551 self._db, |
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552 self._pathid, |
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553 node, |
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554 self._revisioncache, |
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555 stoprids, |
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556 zstddctx=self._dctx, |
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557 ) |
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558 |
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559 # Don't verify hashes if parent nodes were rewritten, as the hash |
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560 # wouldn't verify. |
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561 if self._revisions[node].flags & (FLAG_MISSING_P1 | FLAG_MISSING_P2): |
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562 _verifyhash = False |
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563 |
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564 if _verifyhash: |
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565 self._checkhash(fulltext, node) |
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566 self._revisioncache[node] = fulltext |
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567 |
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568 return fulltext |
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569 |
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570 def rawdata(self, *args, **kwargs): |
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571 return self.revision(*args, **kwargs) |
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572 |
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573 def read(self, node): |
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574 return storageutil.filtermetadata(self.revision(node)) |
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575 |
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576 def renamed(self, node): |
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577 return storageutil.filerevisioncopied(self, node) |
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578 |
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579 def cmp(self, node, fulltext): |
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580 return not storageutil.filedataequivalent(self, node, fulltext) |
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581 |
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582 def emitrevisions( |
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583 self, |
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584 nodes, |
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585 nodesorder=None, |
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586 revisiondata=False, |
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587 assumehaveparentrevisions=False, |
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588 deltamode=repository.CG_DELTAMODE_STD, |
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589 ): |
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590 if nodesorder not in (b'nodes', b'storage', b'linear', None): |
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591 raise error.ProgrammingError( |
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592 b'unhandled value for nodesorder: %s' % nodesorder |
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593 ) |
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594 |
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595 nodes = [n for n in nodes if n != nullid] |
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596 |
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597 if not nodes: |
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598 return |
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599 |
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600 # TODO perform in a single query. |
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601 res = self._db.execute( |
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602 'SELECT revnum, deltaid FROM fileindex ' |
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|
603 'WHERE pathid=? ' |
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604 ' AND node in (%s)' % (','.join(['?'] * len(nodes))), |
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605 tuple([self._pathid] + nodes), |
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606 ) |
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607 |
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608 deltabases = {} |
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609 |
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610 for rev, deltaid in res: |
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611 res = self._db.execute( |
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612 'SELECT revnum from fileindex WHERE pathid=? AND deltaid=?', |
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613 (self._pathid, deltaid), |
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614 ) |
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615 deltabases[rev] = res.fetchone()[0] |
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616 |
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617 # TODO define revdifffn so we can use delta from storage. |
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|
618 for delta in storageutil.emitrevisions( |
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619 self, |
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620 nodes, |
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621 nodesorder, |
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622 sqliterevisiondelta, |
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623 deltaparentfn=deltabases.__getitem__, |
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624 revisiondata=revisiondata, |
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625 assumehaveparentrevisions=assumehaveparentrevisions, |
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626 deltamode=deltamode, |
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627 ): |
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628 |
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diff
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|
629 yield delta |
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|
630 |
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|
631 # End of ifiledata interface. |
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632 |
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633 # Start of ifilemutation interface. |
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634 |
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635 def add(self, filedata, meta, transaction, linkrev, p1, p2): |
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636 if meta or filedata.startswith(b'\x01\n'): |
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637 filedata = storageutil.packmeta(meta, filedata) |
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638 |
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639 rev = self.addrevision(filedata, transaction, linkrev, p1, p2) |
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640 return self.node(rev) |
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641 |
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642 def addrevision( |
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643 self, |
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644 revisiondata, |
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645 transaction, |
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646 linkrev, |
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647 p1, |
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648 p2, |
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649 node=None, |
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650 flags=0, |
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651 cachedelta=None, |
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652 ): |
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653 if flags: |
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654 raise SQLiteStoreError(_(b'flags not supported on revisions')) |
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655 |
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656 validatehash = node is not None |
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657 node = node or storageutil.hashrevisionsha1(revisiondata, p1, p2) |
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658 |
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659 if validatehash: |
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660 self._checkhash(revisiondata, node, p1, p2) |
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661 |
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662 rev = self._nodetorev.get(node) |
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663 if rev is not None: |
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664 return rev |
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665 |
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666 rev = self._addrawrevision( |
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667 node, revisiondata, transaction, linkrev, p1, p2 |
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668 ) |
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669 |
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670 self._revisioncache[node] = revisiondata |
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671 return rev |
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672 |
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673 def addgroup( |
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674 self, |
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675 deltas, |
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676 linkmapper, |
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677 transaction, |
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678 addrevisioncb=None, |
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679 duplicaterevisioncb=None, |
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680 maybemissingparents=False, |
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681 ): |
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682 empty = True |
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683 |
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684 for node, p1, p2, linknode, deltabase, delta, wireflags in deltas: |
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685 storeflags = 0 |
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686 |
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687 if wireflags & repository.REVISION_FLAG_CENSORED: |
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688 storeflags |= FLAG_CENSORED |
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689 |
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690 if wireflags & ~repository.REVISION_FLAG_CENSORED: |
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691 raise SQLiteStoreError(b'unhandled revision flag') |
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692 |
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693 if maybemissingparents: |
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694 if p1 != nullid and not self.hasnode(p1): |
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695 p1 = nullid |
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696 storeflags |= FLAG_MISSING_P1 |
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697 |
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698 if p2 != nullid and not self.hasnode(p2): |
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699 p2 = nullid |
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700 storeflags |= FLAG_MISSING_P2 |
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701 |
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702 baserev = self.rev(deltabase) |
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703 |
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704 # If base is censored, delta must be full replacement in a single |
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705 # patch operation. |
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706 if baserev != nullrev and self.iscensored(baserev): |
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707 hlen = struct.calcsize(b'>lll') |
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708 oldlen = len(self.rawdata(deltabase, _verifyhash=False)) |
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709 newlen = len(delta) - hlen |
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710 |
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711 if delta[:hlen] != mdiff.replacediffheader(oldlen, newlen): |
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712 raise error.CensoredBaseError(self._path, deltabase) |
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713 |
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714 if not (storeflags & FLAG_CENSORED) and storageutil.deltaiscensored( |
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715 delta, baserev, lambda x: len(self.rawdata(x)) |
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716 ): |
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717 storeflags |= FLAG_CENSORED |
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718 |
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719 linkrev = linkmapper(linknode) |
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720 |
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721 if node in self._revisions: |
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722 # Possibly reset parents to make them proper. |
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723 entry = self._revisions[node] |
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724 |
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725 if entry.flags & FLAG_MISSING_P1 and p1 != nullid: |
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726 entry.p1node = p1 |
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727 entry.p1rev = self._nodetorev[p1] |
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728 entry.flags &= ~FLAG_MISSING_P1 |
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729 |
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730 self._db.execute( |
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731 'UPDATE fileindex SET p1rev=?, flags=? WHERE id=?', |
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732 (self._nodetorev[p1], entry.flags, entry.rid), |
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733 ) |
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734 |
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735 if entry.flags & FLAG_MISSING_P2 and p2 != nullid: |
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736 entry.p2node = p2 |
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737 entry.p2rev = self._nodetorev[p2] |
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738 entry.flags &= ~FLAG_MISSING_P2 |
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739 |
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740 self._db.execute( |
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741 'UPDATE fileindex SET p2rev=?, flags=? WHERE id=?', |
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742 (self._nodetorev[p1], entry.flags, entry.rid), |
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743 ) |
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744 |
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745 if duplicaterevisioncb: |
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|
746 duplicaterevisioncb(self, self.rev(node)) |
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747 empty = False |
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748 continue |
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749 |
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750 if deltabase == nullid: |
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|
751 text = mdiff.patch(b'', delta) |
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752 storedelta = None |
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753 else: |
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754 text = None |
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755 storedelta = (deltabase, delta) |
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756 |
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757 rev = self._addrawrevision( |
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758 node, |
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759 text, |
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760 transaction, |
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761 linkrev, |
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762 p1, |
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763 p2, |
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764 storedelta=storedelta, |
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765 flags=storeflags, |
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766 ) |
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767 |
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768 if addrevisioncb: |
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769 addrevisioncb(self, rev) |
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770 empty = False |
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771 |
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772 return not empty |
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773 |
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774 def censorrevision(self, tr, censornode, tombstone=b''): |
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775 tombstone = storageutil.packmeta({b'censored': tombstone}, b'') |
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776 |
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777 # This restriction is cargo culted from revlogs and makes no sense for |
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778 # SQLite, since columns can be resized at will. |
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779 if len(tombstone) > len(self.rawdata(censornode)): |
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780 raise error.Abort( |
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781 _(b'censor tombstone must be no longer than censored data') |
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782 ) |
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783 |
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784 # We need to replace the censored revision's data with the tombstone. |
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785 # But replacing that data will have implications for delta chains that |
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786 # reference it. |
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787 # |
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788 # While "better," more complex strategies are possible, we do something |
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789 # simple: we find delta chain children of the censored revision and we |
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790 # replace those incremental deltas with fulltexts of their corresponding |
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791 # revision. Then we delete the now-unreferenced delta and original |
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792 # revision and insert a replacement. |
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793 |
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794 # Find the delta to be censored. |
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795 censoreddeltaid = self._db.execute( |
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796 'SELECT deltaid FROM fileindex WHERE id=?', |
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797 (self._revisions[censornode].rid,), |
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798 ).fetchone()[0] |
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799 |
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800 # Find all its delta chain children. |
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801 # TODO once we support storing deltas for !files, we'll need to look |
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802 # for those delta chains too. |
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803 rows = list( |
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804 self._db.execute( |
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805 'SELECT id, pathid, node FROM fileindex ' |
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806 'WHERE deltabaseid=? OR deltaid=?', |
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807 (censoreddeltaid, censoreddeltaid), |
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808 ) |
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809 ) |
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810 |
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811 for row in rows: |
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812 rid, pathid, node = row |
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813 |
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814 fulltext = resolvedeltachain( |
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815 self._db, pathid, node, {}, {-1: None}, zstddctx=self._dctx |
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816 ) |
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817 |
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818 deltahash = hashutil.sha1(fulltext).digest() |
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819 |
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820 if self._compengine == b'zstd': |
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821 deltablob = self._cctx.compress(fulltext) |
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822 compression = COMPRESSION_ZSTD |
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823 elif self._compengine == b'zlib': |
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824 deltablob = zlib.compress(fulltext) |
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825 compression = COMPRESSION_ZLIB |
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826 elif self._compengine == b'none': |
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827 deltablob = fulltext |
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828 compression = COMPRESSION_NONE |
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829 else: |
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830 raise error.ProgrammingError( |
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831 b'unhandled compression engine: %s' % self._compengine |
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832 ) |
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833 |
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834 if len(deltablob) >= len(fulltext): |
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835 deltablob = fulltext |
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836 compression = COMPRESSION_NONE |
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837 |
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838 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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839 |
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840 self._db.execute( |
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841 'UPDATE fileindex SET deltaid=?, deltabaseid=NULL ' |
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842 'WHERE id=?', |
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843 (deltaid, rid), |
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844 ) |
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845 |
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846 # Now create the tombstone delta and replace the delta on the censored |
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|
847 # node. |
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848 deltahash = hashutil.sha1(tombstone).digest() |
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849 tombstonedeltaid = insertdelta( |
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850 self._db, COMPRESSION_NONE, deltahash, tombstone |
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851 ) |
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852 |
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853 flags = self._revisions[censornode].flags |
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|
854 flags |= FLAG_CENSORED |
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855 |
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856 self._db.execute( |
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857 'UPDATE fileindex SET flags=?, deltaid=?, deltabaseid=NULL ' |
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858 'WHERE pathid=? AND node=?', |
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859 (flags, tombstonedeltaid, self._pathid, censornode), |
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860 ) |
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861 |
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862 self._db.execute('DELETE FROM delta WHERE id=?', (censoreddeltaid,)) |
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863 |
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864 self._refreshindex() |
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|
865 self._revisioncache.clear() |
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866 |
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|
867 def getstrippoint(self, minlink): |
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868 return storageutil.resolvestripinfo( |
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869 minlink, |
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870 len(self) - 1, |
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871 [self.rev(n) for n in self.heads()], |
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872 self.linkrev, |
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873 self.parentrevs, |
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874 ) |
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875 |
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876 def strip(self, minlink, transaction): |
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|
877 if not len(self): |
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|
878 return |
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879 |
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changeset
|
880 rev, _ignored = self.getstrippoint(minlink) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
881 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
882 if rev == len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
883 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
884 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
885 for rev in self.revs(rev): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
886 self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
887 'DELETE FROM fileindex WHERE pathid=? AND node=?', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
888 (self._pathid, self.node(rev)), |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
889 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
890 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
891 # 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
|
892 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
893 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
894 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
895 # End of ifilemutation interface. |
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 # Start of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
898 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
899 def files(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
900 return [] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
901 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
902 def storageinfo( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
903 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
904 exclusivefiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
905 sharedfiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
906 revisionscount=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
907 trackedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
908 storedsize=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
909 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
910 d = {} |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
911 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
912 if exclusivefiles: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
913 d[b'exclusivefiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
914 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
915 if sharedfiles: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
916 # 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
|
917 d[b'sharedfiles'] = [] |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
918 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
919 if revisionscount: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
920 d[b'revisionscount'] = len(self) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
921 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
922 if trackedsize: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
923 d[b'trackedsize'] = sum( |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
924 len(self.revision(node)) for node in self._nodetorev |
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 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
927 if storedsize: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
928 # TODO implement this? |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
929 d[b'storedsize'] = None |
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 return d |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
932 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
933 def verifyintegrity(self, state): |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
934 state[b'skipread'] = set() |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
935 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
936 for rev in self: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
937 node = self.node(rev) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
938 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
939 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
940 self.revision(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
941 except Exception as e: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
942 yield sqliteproblem( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
943 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
|
944 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
945 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
946 state[b'skipread'].add(node) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
947 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
948 # End of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
949 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
950 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
|
951 if p1 is None and p2 is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
952 p1, p2 = self.parents(node) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
953 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
954 if node == storageutil.hashrevisionsha1(fulltext, p1, p2): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
955 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
956 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
957 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
958 del self._revisioncache[node] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
959 except KeyError: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
960 pass |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
961 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
962 if storageutil.iscensoredtext(fulltext): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
963 raise error.CensoredNodeError(self._path, node, fulltext) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
964 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
965 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
|
966 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
967 def _addrawrevision( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
968 self, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
969 node, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
970 revisiondata, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
971 transaction, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
972 linkrev, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
973 p1, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
974 p2, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
975 storedelta=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
976 flags=0, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
977 ): |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
978 if self._pathid is None: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
979 res = self._db.execute( |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
980 'INSERT INTO filepath (path) VALUES (?)', (self._path,) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
981 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
982 self._pathid = res.lastrowid |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
983 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
984 # For simplicity, always store a delta against p1. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
985 # 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
|
986 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
987 if storedelta: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
988 deltabase, delta = storedelta |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
989 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
990 if isinstance(deltabase, int): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
991 deltabase = self.node(deltabase) |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
992 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
993 else: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
994 assert revisiondata is not None |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
995 deltabase = p1 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
996 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
997 if deltabase == nullid: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
998 delta = revisiondata |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
999 else: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1000 delta = mdiff.textdiff( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1001 self.revision(self.rev(deltabase)), revisiondata |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
1002 ) |
40326
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1003 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1004 # File index stores a pointer to its delta and the parent delta. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1005 # The parent delta is stored via a pointer to the fileindex PK. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1006 if deltabase == nullid: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1007 baseid = None |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1008 else: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1009 baseid = self._revisions[deltabase].rid |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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1010 |
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1011 # Deltas are stored with a hash of their content. This allows |
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1012 # us to de-duplicate. The table is configured to ignore conflicts |
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1013 # and it is faster to just insert and silently noop than to look |
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1014 # first. |
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1015 deltahash = hashutil.sha1(delta).digest() |
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1016 |
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1017 if self._compengine == b'zstd': |
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1018 deltablob = self._cctx.compress(delta) |
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1019 compression = COMPRESSION_ZSTD |
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1020 elif self._compengine == b'zlib': |
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1021 deltablob = zlib.compress(delta) |
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1022 compression = COMPRESSION_ZLIB |
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1023 elif self._compengine == b'none': |
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1024 deltablob = delta |
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1025 compression = COMPRESSION_NONE |
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1026 else: |
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1027 raise error.ProgrammingError( |
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1028 b'unhandled compression engine: %s' % self._compengine |
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1029 ) |
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1030 |
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1031 # Don't store compressed data if it isn't practical. |
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1032 if len(deltablob) >= len(delta): |
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1033 deltablob = delta |
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1034 compression = COMPRESSION_NONE |
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1035 |
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1036 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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1037 |
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1038 rev = len(self) |
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1039 |
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1040 if p1 == nullid: |
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1041 p1rev = nullrev |
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1042 else: |
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1043 p1rev = self._nodetorev[p1] |
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1044 |
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1045 if p2 == nullid: |
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1046 p2rev = nullrev |
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1047 else: |
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1048 p2rev = self._nodetorev[p2] |
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1049 |
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1050 rid = self._db.execute( |
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1051 'INSERT INTO fileindex (' |
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1052 ' pathid, revnum, node, p1rev, p2rev, linkrev, flags, ' |
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1053 ' deltaid, deltabaseid) ' |
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1054 ' VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)', |
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1055 ( |
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1056 self._pathid, |
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1057 rev, |
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1058 node, |
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1059 p1rev, |
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1060 p2rev, |
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1061 linkrev, |
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1062 flags, |
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1063 deltaid, |
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1064 baseid, |
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1065 ), |
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1066 ).lastrowid |
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1067 |
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1068 entry = revisionentry( |
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|
1069 rid=rid, |
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1070 rev=rev, |
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1071 node=node, |
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1072 p1rev=p1rev, |
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1073 p2rev=p2rev, |
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1074 p1node=p1, |
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1075 p2node=p2, |
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1076 linkrev=linkrev, |
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1077 flags=flags, |
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1078 ) |
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1079 |
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1080 self._nodetorev[node] = rev |
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1081 self._revtonode[rev] = node |
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1082 self._revisions[node] = entry |
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|
1083 |
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|
1084 return rev |
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1085 |
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1086 |
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1087 class sqliterepository(localrepo.localrepository): |
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1088 def cancopy(self): |
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|
1089 return False |
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1090 |
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1091 def transaction(self, *args, **kwargs): |
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1092 current = self.currenttransaction() |
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1093 |
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1094 tr = super(sqliterepository, self).transaction(*args, **kwargs) |
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1095 |
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1096 if current: |
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|
1097 return tr |
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1098 |
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1099 self._dbconn.execute('BEGIN TRANSACTION') |
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1100 |
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1101 def committransaction(_): |
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1102 self._dbconn.commit() |
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1103 |
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1104 tr.addfinalize(b'sqlitestore', committransaction) |
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1105 |
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1106 return tr |
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1107 |
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1108 @property |
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1109 def _dbconn(self): |
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1110 # SQLite connections can only be used on the thread that created |
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1111 # them. In most cases, this "just works." However, hgweb uses |
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1112 # multiple threads. |
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1113 tid = threading.current_thread().ident |
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1114 |
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1115 if self._db: |
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1116 if self._db[0] == tid: |
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1117 return self._db[1] |
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1118 |
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1119 db = makedb(self.svfs.join(b'db.sqlite')) |
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1120 self._db = (tid, db) |
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1121 |
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1122 return db |
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1123 |
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1124 |
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1125 def makedb(path): |
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1126 """Construct a database handle for a database at path.""" |
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1127 |
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1128 db = sqlite3.connect(encoding.strfromlocal(path)) |
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1129 db.text_factory = bytes |
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1130 |
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1131 res = db.execute('PRAGMA user_version').fetchone()[0] |
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1132 |
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1133 # New database. |
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1134 if res == 0: |
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1135 for statement in CREATE_SCHEMA: |
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1136 db.execute(statement) |
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|
1137 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1138 db.commit() |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1139 |
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diff
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|
1140 elif res == CURRENT_SCHEMA_VERSION: |
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parents:
diff
changeset
|
1141 pass |
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parents:
diff
changeset
|
1142 |
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changeset
|
1143 else: |
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parents:
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diff
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|
1144 raise error.Abort(_(b'sqlite database has unrecognized version')) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1145 |
43507
adde839cc54f
sqlitestore: remove superfluous r-prefixes on strings
Augie Fackler <augie@google.com>
parents:
43117
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|
1146 db.execute('PRAGMA journal_mode=WAL') |
40326
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|
1147 |
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|
1148 return db |
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diff
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|
1149 |
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|
1150 |
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|
1151 def featuresetup(ui, supported): |
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|
1152 supported.add(REQUIREMENT) |
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|
1153 |
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|
1154 if zstd: |
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|
1155 supported.add(REQUIREMENT_ZSTD) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
1156 |
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|
1157 supported.add(REQUIREMENT_ZLIB) |
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parents:
diff
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|
1158 supported.add(REQUIREMENT_NONE) |
40390
7e3b6c4f01a2
localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
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|
1159 supported.add(REQUIREMENT_SHALLOW_FILES) |
45372
77b8588dd84e
requirements: introduce new requirements related module
Pulkit Goyal <7895pulkit@gmail.com>
parents:
44062
diff
changeset
|
1160 supported.add(requirements.NARROW_REQUIREMENT) |
40326
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|
1161 |
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|
1162 |
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|
1163 def newreporequirements(orig, ui, createopts): |
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|
1164 if createopts[b'backend'] != b'sqlite': |
40326
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parents:
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|
1165 return orig(ui, createopts) |
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diff
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|
1166 |
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|
1167 # This restriction can be lifted once we have more confidence. |
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|
1168 if b'sharedrepo' in createopts: |
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parents:
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diff
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|
1169 raise error.Abort( |
43117
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cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents:
43077
diff
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|
1170 _(b'shared repositories not supported with SQLite store') |
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|
1171 ) |
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|
1172 |
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1173 # This filtering is out of an abundance of caution: we want to ensure |
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parents:
diff
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|
1174 # we honor creation options and we do that by annotating exactly the |
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diff
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|
1175 # creation options we recognize. |
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diff
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|
1176 known = { |
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parents:
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|
1177 b'narrowfiles', |
687b865b95ad
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parents:
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|
1178 b'backend', |
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parents:
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|
1179 b'shallowfilestore', |
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|
1180 } |
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|
1181 |
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|
1182 unsupported = set(createopts) - known |
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|
1183 if unsupported: |
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parents:
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|
1184 raise error.Abort( |
43117
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cleanup: join string literals that are already on one line
Martin von Zweigbergk <martinvonz@google.com>
parents:
43077
diff
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|
1185 _(b'SQLite store does not support repo creation option: %s') |
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|
1186 % b', '.join(sorted(unsupported)) |
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|
1187 ) |
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|
1188 |
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diff
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|
1189 # Since we're a hybrid store that still relies on revlogs, we fall back |
fed697fa1734
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parents:
diff
changeset
|
1190 # to using the revlogv1 backend's storage requirements then adding our |
fed697fa1734
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parents:
diff
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|
1191 # own requirement. |
43077
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|
1192 createopts[b'backend'] = b'revlogv1' |
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|
1193 requirements = orig(ui, createopts) |
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|
1194 requirements.add(REQUIREMENT) |
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|
1195 |
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|
1196 compression = ui.config(b'storage', b'sqlite.compression') |
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|
1197 |
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|
1198 if compression == b'zstd' and not zstd: |
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|
1199 raise error.Abort( |
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|
1200 _( |
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|
1201 b'storage.sqlite.compression set to "zstd" but ' |
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|
1202 b'zstandard compression not available to this ' |
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|
1203 b'Mercurial install' |
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|
1204 ) |
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|
1205 ) |
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1206 |
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|
1207 if compression == b'zstd': |
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|
1208 requirements.add(REQUIREMENT_ZSTD) |
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|
1209 elif compression == b'zlib': |
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|
1210 requirements.add(REQUIREMENT_ZLIB) |
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1211 elif compression == b'none': |
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|
1212 requirements.add(REQUIREMENT_NONE) |
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|
1213 else: |
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|
1214 raise error.Abort( |
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|
1215 _( |
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|
1216 b'unknown compression engine defined in ' |
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|
1217 b'storage.sqlite.compression: %s' |
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|
1218 ) |
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|
1219 % compression |
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1220 ) |
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1221 |
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|
1222 if createopts.get(b'shallowfilestore'): |
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|
1223 requirements.add(REQUIREMENT_SHALLOW_FILES) |
7e3b6c4f01a2
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|
1224 |
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|
1225 return requirements |
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|
1226 |
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1227 |
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|
1228 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage) |
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|
1229 class sqlitefilestorage(object): |
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|
1230 """Repository file storage backed by SQLite.""" |
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1231 |
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|
1232 def file(self, path): |
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|
1233 if path[0] == b'/': |
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|
1234 path = path[1:] |
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|
1235 |
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|
1236 if REQUIREMENT_ZSTD in self.requirements: |
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1237 compression = b'zstd' |
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|
1238 elif REQUIREMENT_ZLIB in self.requirements: |
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1239 compression = b'zlib' |
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|
1240 elif REQUIREMENT_NONE in self.requirements: |
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1241 compression = b'none' |
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|
1242 else: |
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|
1243 raise error.Abort( |
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|
1244 _( |
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|
1245 b'unable to determine what compression engine ' |
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|
1246 b'to use for SQLite storage' |
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|
1247 ) |
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1248 ) |
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|
1249 |
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|
1250 return sqlitefilestore(self._dbconn, path, compression) |
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|
1251 |
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1252 |
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|
1253 def makefilestorage(orig, requirements, features, **kwargs): |
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|
1254 """Produce a type conforming to ``ilocalrepositoryfilestorage``.""" |
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|
1255 if REQUIREMENT in requirements: |
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|
1256 if REQUIREMENT_SHALLOW_FILES in requirements: |
7e3b6c4f01a2
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changeset
|
1257 features.add(repository.REPO_FEATURE_SHALLOW_FILE_STORAGE) |
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1258 |
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1259 return sqlitefilestorage |
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1260 else: |
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1261 return orig(requirements=requirements, features=features, **kwargs) |
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1262 |
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1263 |
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1264 def makemain(orig, ui, requirements, **kwargs): |
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1265 if REQUIREMENT in requirements: |
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1266 if REQUIREMENT_ZSTD in requirements and not zstd: |
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1267 raise error.Abort( |
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1268 _( |
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1269 b'repository uses zstandard compression, which ' |
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1270 b'is not available to this Mercurial install' |
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1271 ) |
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1272 ) |
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1273 |
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1274 return sqliterepository |
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1275 |
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1276 return orig(requirements=requirements, **kwargs) |
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1277 |
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1278 |
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1279 def verifierinit(orig, self, *args, **kwargs): |
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1280 orig(self, *args, **kwargs) |
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1281 |
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1282 # We don't care that files in the store don't align with what is |
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1283 # advertised. So suppress these warnings. |
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1284 self.warnorphanstorefiles = False |
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1285 |
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1286 |
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1287 def extsetup(ui): |
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1288 localrepo.featuresetupfuncs.add(featuresetup) |
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1289 extensions.wrapfunction( |
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1290 localrepo, b'newreporequirements', newreporequirements |
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1291 ) |
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1292 extensions.wrapfunction(localrepo, b'makefilestorage', makefilestorage) |
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1293 extensions.wrapfunction(localrepo, b'makemain', makemain) |
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1294 extensions.wrapfunction(verify.verifier, b'__init__', verifierinit) |
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1295 |
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1296 |
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1297 def reposetup(ui, repo): |
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1298 if isinstance(repo, sqliterepository): |
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1299 repo._db = None |
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1300 |
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1301 # TODO check for bundlerepository? |