Mercurial > hg
annotate hgext/sqlitestore.py @ 46645:7711853110b9
typing: add some type annotations to mercurial/util.py
Differential Revision: https://phab.mercurial-scm.org/D10127
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sat, 06 Mar 2021 23:41:32 -0500 |
parents | 7a93b7b3dc2d |
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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
changeset
|
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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parents:
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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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|
880 rev, _ignored = self.getstrippoint(minlink) |
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|
881 |
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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
changeset
|
1010 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1011 # Deltas are stored with a hash of their content. This allows |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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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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1138 db.commit() |
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1139 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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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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diff
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:
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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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parents:
diff
changeset
|
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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Gregory Szorc <gregory.szorc@gmail.com>
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|
1155 supported.add(REQUIREMENT_ZSTD) |
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1156 |
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|
1157 supported.add(REQUIREMENT_ZLIB) |
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Gregory Szorc <gregory.szorc@gmail.com>
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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|
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
8ff1ecfadcd1
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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|
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') |
43077
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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'): |
40390
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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) |
7e3b6c4f01a2
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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? |