Mercurial > hg
annotate hgext/sqlitestore.py @ 51486:0ddc34330d41
branchcache: do not accept "empty update"
This currently does not happens and it will be simpler that is remains that way.
If all update do something, we will be able to simply declare, in a later
changesets, that all update to result in a dirty branchcache.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Fri, 08 Mar 2024 15:06:54 +0100 |
parents | ceeb8fa23cc8 |
children | 493034cc3265 |
rev | line source |
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1 # sqlitestore.py - Storage backend that uses SQLite |
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2 # |
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3 # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 """store repository data in SQLite (EXPERIMENTAL) |
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9 |
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10 The sqlitestore extension enables the storage of repository data in SQLite. |
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11 |
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12 This extension is HIGHLY EXPERIMENTAL. There are NO BACKWARDS COMPATIBILITY |
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13 GUARANTEES. This means that repositories created with this extension may |
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14 only be usable with the exact version of this extension/Mercurial that was |
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15 used. The extension attempts to enforce this in order to prevent repository |
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16 corruption. |
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17 |
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18 In addition, several features are not yet supported or have known bugs: |
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19 |
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20 * Only some data is stored in SQLite. Changeset, manifest, and other repository |
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21 data is not yet stored in SQLite. |
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22 * Transactions are not robust. If the process is aborted at the right time |
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23 during transaction close/rollback, the repository could be in an inconsistent |
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24 state. This problem will diminish once all repository data is tracked by |
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25 SQLite. |
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26 * Bundle repositories do not work (the ability to use e.g. |
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27 `hg -R <bundle-file> log` to automatically overlay a bundle on top of the |
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28 existing repository). |
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29 * Various other features don't work. |
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30 |
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31 This extension should work for basic clone/pull, update, and commit workflows. |
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32 Some history rewriting operations may fail due to lack of support for bundle |
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33 repositories. |
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34 |
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35 To use, activate the extension and set the ``storage.new-repo-backend`` config |
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36 option to ``sqlite`` to enable new repositories to use SQLite for storage. |
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37 """ |
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38 |
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39 # To run the test suite with repos using SQLite by default, execute the |
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40 # following: |
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41 # |
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42 # HGREPOFEATURES="sqlitestore" run-tests.py \ |
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43 # --extra-config-opt extensions.sqlitestore= \ |
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44 # --extra-config-opt storage.new-repo-backend=sqlite |
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45 |
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46 |
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47 import sqlite3 |
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48 import struct |
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49 import threading |
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50 import zlib |
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51 |
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52 from mercurial.i18n import _ |
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53 from mercurial.node import ( |
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54 nullrev, |
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55 sha1nodeconstants, |
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56 short, |
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57 ) |
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58 from mercurial.thirdparty import attr |
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59 from mercurial import ( |
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60 ancestor, |
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61 dagop, |
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62 encoding, |
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63 error, |
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64 extensions, |
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65 localrepo, |
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66 mdiff, |
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67 pycompat, |
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68 registrar, |
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69 requirements, |
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70 util, |
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71 verify, |
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72 ) |
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73 from mercurial.interfaces import ( |
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74 repository, |
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75 util as interfaceutil, |
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76 ) |
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77 from mercurial.utils import ( |
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78 hashutil, |
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79 storageutil, |
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80 ) |
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81 |
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82 try: |
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83 from mercurial import zstd # pytype: disable=import-error |
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84 |
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85 zstd.__version__ |
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86 except ImportError: |
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87 zstd = None |
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88 |
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89 configtable = {} |
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90 configitem = registrar.configitem(configtable) |
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91 |
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92 # experimental config: storage.sqlite.compression |
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93 configitem( |
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94 b'storage', |
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95 b'sqlite.compression', |
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96 default=b'zstd' if zstd else b'zlib', |
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97 experimental=True, |
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98 ) |
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99 |
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100 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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101 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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102 # be specifying the version(s) of Mercurial they are tested with, or |
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103 # leave the attribute unspecified. |
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104 testedwith = b'ships-with-hg-core' |
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105 |
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106 REQUIREMENT = b'exp-sqlite-001' |
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107 REQUIREMENT_ZSTD = b'exp-sqlite-comp-001=zstd' |
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108 REQUIREMENT_ZLIB = b'exp-sqlite-comp-001=zlib' |
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109 REQUIREMENT_NONE = b'exp-sqlite-comp-001=none' |
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110 REQUIREMENT_SHALLOW_FILES = b'exp-sqlite-shallow-files' |
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111 |
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112 CURRENT_SCHEMA_VERSION = 1 |
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113 |
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114 COMPRESSION_NONE = 1 |
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115 COMPRESSION_ZSTD = 2 |
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116 COMPRESSION_ZLIB = 3 |
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117 |
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118 FLAG_CENSORED = 1 |
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119 FLAG_MISSING_P1 = 2 |
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120 FLAG_MISSING_P2 = 4 |
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121 |
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122 CREATE_SCHEMA = [ |
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123 # Deltas are stored as content-indexed blobs. |
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124 # compression column holds COMPRESSION_* constant for how the |
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125 # delta is encoded. |
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126 'CREATE TABLE delta (' |
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127 ' id INTEGER PRIMARY KEY, ' |
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128 ' compression INTEGER NOT NULL, ' |
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129 ' hash BLOB UNIQUE ON CONFLICT ABORT, ' |
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130 ' delta BLOB NOT NULL ' |
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131 ')', |
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132 # Tracked paths are denormalized to integers to avoid redundant |
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133 # storage of the path name. |
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134 'CREATE TABLE filepath (' |
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135 ' id INTEGER PRIMARY KEY, ' |
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136 ' path BLOB NOT NULL ' |
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137 ')', |
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138 'CREATE UNIQUE INDEX filepath_path ON filepath (path)', |
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139 # We have a single table for all file revision data. |
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140 # Each file revision is uniquely described by a (path, rev) and |
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141 # (path, node). |
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142 # |
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143 # Revision data is stored as a pointer to the delta producing this |
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144 # revision and the file revision whose delta should be applied before |
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145 # that one. One can reconstruct the delta chain by recursively following |
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146 # the delta base revision pointers until one encounters NULL. |
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147 # |
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148 # flags column holds bitwise integer flags controlling storage options. |
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149 # These flags are defined by the FLAG_* constants. |
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150 'CREATE TABLE fileindex (' |
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151 ' id INTEGER PRIMARY KEY, ' |
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152 ' pathid INTEGER REFERENCES filepath(id), ' |
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153 ' revnum INTEGER NOT NULL, ' |
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154 ' p1rev INTEGER NOT NULL, ' |
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155 ' p2rev INTEGER NOT NULL, ' |
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156 ' linkrev INTEGER NOT NULL, ' |
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157 ' flags INTEGER NOT NULL, ' |
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158 ' deltaid INTEGER REFERENCES delta(id), ' |
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159 ' deltabaseid INTEGER REFERENCES fileindex(id), ' |
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160 ' node BLOB NOT NULL ' |
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161 ')', |
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162 'CREATE UNIQUE INDEX fileindex_pathrevnum ' |
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163 ' ON fileindex (pathid, revnum)', |
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164 'CREATE UNIQUE INDEX fileindex_pathnode ON fileindex (pathid, node)', |
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165 # Provide a view over all file data for convenience. |
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166 'CREATE VIEW filedata AS ' |
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167 'SELECT ' |
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168 ' fileindex.id AS id, ' |
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169 ' filepath.id AS pathid, ' |
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170 ' filepath.path AS path, ' |
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171 ' fileindex.revnum AS revnum, ' |
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172 ' fileindex.node AS node, ' |
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173 ' fileindex.p1rev AS p1rev, ' |
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174 ' fileindex.p2rev AS p2rev, ' |
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175 ' fileindex.linkrev AS linkrev, ' |
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176 ' fileindex.flags AS flags, ' |
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177 ' fileindex.deltaid AS deltaid, ' |
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178 ' fileindex.deltabaseid AS deltabaseid ' |
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179 'FROM filepath, fileindex ' |
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180 'WHERE fileindex.pathid=filepath.id', |
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181 'PRAGMA user_version=%d' % CURRENT_SCHEMA_VERSION, |
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182 ] |
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183 |
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184 |
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185 def resolvedeltachain(db, pathid, node, revisioncache, stoprids, zstddctx=None): |
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186 """Resolve a delta chain for a file node.""" |
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187 |
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188 # TODO the "not in ({stops})" here is possibly slowing down the query |
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189 # because it needs to perform the lookup on every recursive invocation. |
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190 # This could possibly be faster if we created a temporary query with |
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191 # baseid "poisoned" to null and limited the recursive filter to |
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192 # "is not null". |
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193 res = db.execute( |
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194 'WITH RECURSIVE ' |
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195 ' deltachain(deltaid, baseid) AS (' |
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196 ' SELECT deltaid, deltabaseid FROM fileindex ' |
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197 ' WHERE pathid=? AND node=? ' |
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198 ' UNION ALL ' |
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199 ' SELECT fileindex.deltaid, deltabaseid ' |
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200 ' FROM fileindex, deltachain ' |
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201 ' WHERE ' |
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202 ' fileindex.id=deltachain.baseid ' |
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203 ' AND deltachain.baseid IS NOT NULL ' |
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204 ' AND fileindex.id NOT IN ({stops}) ' |
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205 ' ) ' |
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206 'SELECT deltachain.baseid, compression, delta ' |
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207 'FROM deltachain, delta ' |
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208 'WHERE delta.id=deltachain.deltaid'.format( |
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209 stops=','.join(['?'] * len(stoprids)) |
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210 ), |
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211 tuple([pathid, node] + list(stoprids.keys())), |
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212 ) |
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213 |
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214 deltas = [] |
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215 lastdeltabaseid = None |
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216 |
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217 for deltabaseid, compression, delta in res: |
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218 lastdeltabaseid = deltabaseid |
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219 |
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220 if compression == COMPRESSION_ZSTD: |
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221 delta = zstddctx.decompress(delta) |
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222 elif compression == COMPRESSION_NONE: |
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223 delta = delta |
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224 elif compression == COMPRESSION_ZLIB: |
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225 delta = zlib.decompress(delta) |
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226 else: |
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227 raise SQLiteStoreError( |
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228 b'unhandled compression type: %d' % compression |
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229 ) |
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230 |
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231 deltas.append(delta) |
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232 |
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233 if lastdeltabaseid in stoprids: |
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234 basetext = revisioncache[stoprids[lastdeltabaseid]] |
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235 else: |
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236 basetext = deltas.pop() |
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237 |
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238 deltas.reverse() |
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239 fulltext = mdiff.patches(basetext, deltas) |
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240 |
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241 # SQLite returns buffer instances for blob columns on Python 2. This |
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242 # type can propagate through the delta application layer. Because |
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243 # downstream callers assume revisions are bytes, cast as needed. |
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244 if not isinstance(fulltext, bytes): |
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245 fulltext = bytes(delta) |
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246 |
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247 return fulltext |
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248 |
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249 |
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250 def insertdelta(db, compression, hash, delta): |
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251 try: |
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252 return db.execute( |
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253 'INSERT INTO delta (compression, hash, delta) VALUES (?, ?, ?)', |
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254 (compression, hash, delta), |
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255 ).lastrowid |
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256 except sqlite3.IntegrityError: |
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257 return db.execute( |
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258 'SELECT id FROM delta WHERE hash=?', (hash,) |
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259 ).fetchone()[0] |
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260 |
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261 |
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262 class SQLiteStoreError(error.StorageError): |
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263 pass |
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264 |
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265 |
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266 @attr.s |
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267 class revisionentry: |
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268 rid = attr.ib() |
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269 rev = attr.ib() |
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270 node = attr.ib() |
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271 p1rev = attr.ib() |
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272 p2rev = attr.ib() |
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273 p1node = attr.ib() |
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274 p2node = attr.ib() |
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275 linkrev = attr.ib() |
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276 flags = attr.ib() |
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277 |
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278 |
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279 @interfaceutil.implementer(repository.irevisiondelta) |
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280 @attr.s(slots=True) |
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281 class sqliterevisiondelta: |
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282 node = attr.ib() |
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283 p1node = attr.ib() |
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284 p2node = attr.ib() |
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285 basenode = attr.ib() |
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286 flags = attr.ib() |
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287 baserevisionsize = attr.ib() |
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288 revision = attr.ib() |
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289 delta = attr.ib() |
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290 sidedata = attr.ib() |
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291 protocol_flags = attr.ib() |
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292 linknode = attr.ib(default=None) |
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293 |
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294 |
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295 @interfaceutil.implementer(repository.iverifyproblem) |
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296 @attr.s(frozen=True) |
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297 class sqliteproblem: |
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298 warning = attr.ib(default=None) |
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299 error = attr.ib(default=None) |
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300 node = attr.ib(default=None) |
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301 |
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302 |
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303 @interfaceutil.implementer(repository.ifilestorage) |
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304 class sqlitefilestore: |
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305 """Implements storage for an individual tracked path.""" |
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306 |
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307 def __init__(self, db, path, compression): |
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308 self.nullid = sha1nodeconstants.nullid |
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309 self._db = db |
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310 self._path = path |
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311 |
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312 self._pathid = None |
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313 |
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314 # revnum -> node |
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315 self._revtonode = {} |
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316 # node -> revnum |
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317 self._nodetorev = {} |
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318 # node -> data structure |
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319 self._revisions = {} |
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320 |
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321 self._revisioncache = util.lrucachedict(10) |
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322 |
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323 self._compengine = compression |
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324 |
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325 if compression == b'zstd': |
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326 self._cctx = zstd.ZstdCompressor(level=3) |
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327 self._dctx = zstd.ZstdDecompressor() |
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328 else: |
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329 self._cctx = None |
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330 self._dctx = None |
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331 |
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332 self._refreshindex() |
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333 |
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334 def _refreshindex(self): |
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335 self._revtonode = {} |
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336 self._nodetorev = {} |
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337 self._revisions = {} |
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338 |
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339 res = list( |
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340 self._db.execute( |
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341 'SELECT id FROM filepath WHERE path=?', (self._path,) |
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342 ) |
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343 ) |
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344 |
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345 if not res: |
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346 self._pathid = None |
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347 return |
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348 |
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349 self._pathid = res[0][0] |
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350 |
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351 res = self._db.execute( |
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352 'SELECT id, revnum, node, p1rev, p2rev, linkrev, flags ' |
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353 'FROM fileindex ' |
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354 'WHERE pathid=? ' |
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355 'ORDER BY revnum ASC', |
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356 (self._pathid,), |
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357 ) |
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358 |
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359 for i, row in enumerate(res): |
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360 rid, rev, node, p1rev, p2rev, linkrev, flags = row |
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361 |
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362 if i != rev: |
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363 raise SQLiteStoreError( |
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364 _(b'sqlite database has inconsistent revision numbers') |
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365 ) |
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366 |
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367 if p1rev == nullrev: |
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368 p1node = sha1nodeconstants.nullid |
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369 else: |
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370 p1node = self._revtonode[p1rev] |
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371 |
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372 if p2rev == nullrev: |
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373 p2node = sha1nodeconstants.nullid |
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374 else: |
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375 p2node = self._revtonode[p2rev] |
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376 |
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377 entry = revisionentry( |
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378 rid=rid, |
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379 rev=rev, |
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380 node=node, |
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381 p1rev=p1rev, |
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382 p2rev=p2rev, |
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383 p1node=p1node, |
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384 p2node=p2node, |
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385 linkrev=linkrev, |
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386 flags=flags, |
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387 ) |
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388 |
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389 self._revtonode[rev] = node |
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390 self._nodetorev[node] = rev |
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391 self._revisions[node] = entry |
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392 |
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393 # Start of ifileindex interface. |
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394 |
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395 def __len__(self): |
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396 return len(self._revisions) |
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397 |
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398 def __iter__(self): |
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399 return iter(range(len(self._revisions))) |
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400 |
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401 def hasnode(self, node): |
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402 if node == sha1nodeconstants.nullid: |
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403 return False |
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404 |
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405 return node in self._nodetorev |
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406 |
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407 def revs(self, start=0, stop=None): |
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408 return storageutil.iterrevs( |
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409 len(self._revisions), start=start, stop=stop |
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410 ) |
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411 |
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412 def parents(self, node): |
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413 if node == sha1nodeconstants.nullid: |
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414 return sha1nodeconstants.nullid, sha1nodeconstants.nullid |
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415 |
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416 if node not in self._revisions: |
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417 raise error.LookupError(node, self._path, _(b'no node')) |
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418 |
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419 entry = self._revisions[node] |
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420 return entry.p1node, entry.p2node |
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421 |
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422 def parentrevs(self, rev): |
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423 if rev == nullrev: |
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424 return nullrev, nullrev |
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425 |
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426 if rev not in self._revtonode: |
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427 raise IndexError(rev) |
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428 |
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429 entry = self._revisions[self._revtonode[rev]] |
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430 return entry.p1rev, entry.p2rev |
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431 |
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432 def ancestors(self, revs, stoprev=0, inclusive=False): |
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433 """Generate the ancestors of 'revs' in reverse revision order. |
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434 Does not generate revs lower than stoprev. |
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435 |
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436 See the documentation for ancestor.lazyancestors for more details.""" |
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437 |
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438 # first, make sure start revisions aren't filtered |
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439 revs = list(revs) |
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440 checkrev = self.node |
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441 for r in revs: |
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442 checkrev(r) |
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443 |
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444 return ancestor.lazyancestors( |
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445 self.parentrevs, |
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446 revs, |
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447 stoprev=stoprev, |
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448 inclusive=inclusive, |
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449 ) |
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450 |
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451 def rev(self, node): |
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452 if node == sha1nodeconstants.nullid: |
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453 return nullrev |
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454 |
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455 if node not in self._nodetorev: |
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456 raise error.LookupError(node, self._path, _(b'no node')) |
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457 |
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458 return self._nodetorev[node] |
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459 |
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460 def node(self, rev): |
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461 if rev == nullrev: |
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462 return sha1nodeconstants.nullid |
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463 |
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464 if rev not in self._revtonode: |
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465 raise IndexError(rev) |
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466 |
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467 return self._revtonode[rev] |
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468 |
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469 def lookup(self, node): |
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470 return storageutil.fileidlookup(self, node, self._path) |
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471 |
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472 def linkrev(self, rev): |
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473 if rev == nullrev: |
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474 return nullrev |
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475 |
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476 if rev not in self._revtonode: |
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|
477 raise IndexError(rev) |
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478 |
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479 entry = self._revisions[self._revtonode[rev]] |
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480 return entry.linkrev |
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|
481 |
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482 def iscensored(self, rev): |
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483 if rev == nullrev: |
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|
484 return False |
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|
485 |
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486 if rev not in self._revtonode: |
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|
487 raise IndexError(rev) |
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488 |
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489 return self._revisions[self._revtonode[rev]].flags & FLAG_CENSORED |
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|
490 |
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491 def commonancestorsheads(self, node1, node2): |
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492 rev1 = self.rev(node1) |
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493 rev2 = self.rev(node2) |
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494 |
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495 ancestors = ancestor.commonancestorsheads(self.parentrevs, rev1, rev2) |
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496 return pycompat.maplist(self.node, ancestors) |
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|
497 |
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498 def descendants(self, revs): |
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499 # TODO we could implement this using a recursive SQL query, which |
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500 # might be faster. |
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501 return dagop.descendantrevs(revs, self.revs, self.parentrevs) |
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502 |
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503 def heads(self, start=None, stop=None): |
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504 if start is None and stop is None: |
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505 if not len(self): |
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506 return [sha1nodeconstants.nullid] |
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507 |
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508 startrev = self.rev(start) if start is not None else nullrev |
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509 stoprevs = {self.rev(n) for n in stop or []} |
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510 |
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511 revs = dagop.headrevssubset( |
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512 self.revs, self.parentrevs, startrev=startrev, stoprevs=stoprevs |
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513 ) |
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514 |
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515 return [self.node(rev) for rev in revs] |
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516 |
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517 def children(self, node): |
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518 rev = self.rev(node) |
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519 |
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520 res = self._db.execute( |
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521 'SELECT' |
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522 ' node ' |
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523 ' FROM filedata ' |
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524 ' WHERE path=? AND (p1rev=? OR p2rev=?) ' |
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525 ' ORDER BY revnum ASC', |
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526 (self._path, rev, rev), |
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527 ) |
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528 |
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529 return [row[0] for row in res] |
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530 |
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531 # End of ifileindex interface. |
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532 |
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533 # Start of ifiledata interface. |
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534 |
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535 def size(self, rev): |
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536 if rev == nullrev: |
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537 return 0 |
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538 |
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539 if rev not in self._revtonode: |
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540 raise IndexError(rev) |
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541 |
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542 node = self._revtonode[rev] |
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543 |
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544 if self.renamed(node): |
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545 return len(self.read(node)) |
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546 |
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547 return len(self.revision(node)) |
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548 |
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549 def revision(self, node, raw=False, _verifyhash=True): |
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550 if node in (sha1nodeconstants.nullid, nullrev): |
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551 return b'' |
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552 |
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553 if isinstance(node, int): |
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554 node = self.node(node) |
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555 |
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556 if node not in self._nodetorev: |
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557 raise error.LookupError(node, self._path, _(b'no node')) |
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558 |
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559 if node in self._revisioncache: |
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560 return self._revisioncache[node] |
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561 |
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562 # Because we have a fulltext revision cache, we are able to |
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563 # short-circuit delta chain traversal and decompression as soon as |
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564 # we encounter a revision in the cache. |
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565 |
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566 stoprids = {self._revisions[n].rid: n for n in self._revisioncache} |
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567 |
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568 if not stoprids: |
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569 stoprids[-1] = None |
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570 |
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571 fulltext = resolvedeltachain( |
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572 self._db, |
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573 self._pathid, |
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574 node, |
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575 self._revisioncache, |
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576 stoprids, |
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577 zstddctx=self._dctx, |
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578 ) |
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579 |
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580 # Don't verify hashes if parent nodes were rewritten, as the hash |
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581 # wouldn't verify. |
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582 if self._revisions[node].flags & (FLAG_MISSING_P1 | FLAG_MISSING_P2): |
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583 _verifyhash = False |
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584 |
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585 if _verifyhash: |
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586 self._checkhash(fulltext, node) |
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587 self._revisioncache[node] = fulltext |
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588 |
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589 return fulltext |
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590 |
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|
591 def rawdata(self, *args, **kwargs): |
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592 return self.revision(*args, **kwargs) |
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593 |
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594 def read(self, node): |
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595 return storageutil.filtermetadata(self.revision(node)) |
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596 |
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597 def renamed(self, node): |
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598 return storageutil.filerevisioncopied(self, node) |
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599 |
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600 def cmp(self, node, fulltext): |
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601 return not storageutil.filedataequivalent(self, node, fulltext) |
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|
602 |
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603 def emitrevisions( |
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604 self, |
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605 nodes, |
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606 nodesorder=None, |
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607 revisiondata=False, |
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608 assumehaveparentrevisions=False, |
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609 deltamode=repository.CG_DELTAMODE_STD, |
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parents:
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|
610 sidedata_helpers=None, |
49609
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|
611 debug_info=None, |
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612 ): |
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613 if nodesorder not in (b'nodes', b'storage', b'linear', None): |
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614 raise error.ProgrammingError( |
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615 b'unhandled value for nodesorder: %s' % nodesorder |
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616 ) |
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617 |
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618 nodes = [n for n in nodes if n != sha1nodeconstants.nullid] |
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619 |
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620 if not nodes: |
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|
621 return |
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622 |
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|
623 # TODO perform in a single query. |
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624 res = self._db.execute( |
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625 'SELECT revnum, deltaid FROM fileindex ' |
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626 'WHERE pathid=? ' |
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627 ' AND node in (%s)' % (','.join(['?'] * len(nodes))), |
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628 tuple([self._pathid] + nodes), |
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629 ) |
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630 |
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631 deltabases = {} |
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632 |
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633 for rev, deltaid in res: |
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634 res = self._db.execute( |
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635 'SELECT revnum from fileindex WHERE pathid=? AND deltaid=?', |
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636 (self._pathid, deltaid), |
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637 ) |
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638 deltabases[rev] = res.fetchone()[0] |
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639 |
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640 # TODO define revdifffn so we can use delta from storage. |
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641 for delta in storageutil.emitrevisions( |
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642 self, |
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643 nodes, |
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644 nodesorder, |
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645 sqliterevisiondelta, |
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646 deltaparentfn=deltabases.__getitem__, |
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647 revisiondata=revisiondata, |
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648 assumehaveparentrevisions=assumehaveparentrevisions, |
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649 deltamode=deltamode, |
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650 sidedata_helpers=sidedata_helpers, |
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651 ): |
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652 |
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653 yield delta |
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654 |
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655 # End of ifiledata interface. |
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656 |
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657 # Start of ifilemutation interface. |
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658 |
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659 def add(self, filedata, meta, transaction, linkrev, p1, p2): |
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660 if meta or filedata.startswith(b'\x01\n'): |
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661 filedata = storageutil.packmeta(meta, filedata) |
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662 |
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663 rev = self.addrevision(filedata, transaction, linkrev, p1, p2) |
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664 return self.node(rev) |
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665 |
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666 def addrevision( |
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667 self, |
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668 revisiondata, |
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669 transaction, |
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670 linkrev, |
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671 p1, |
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672 p2, |
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673 node=None, |
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674 flags=0, |
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675 cachedelta=None, |
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676 ): |
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677 if flags: |
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678 raise SQLiteStoreError(_(b'flags not supported on revisions')) |
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679 |
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680 validatehash = node is not None |
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681 node = node or storageutil.hashrevisionsha1(revisiondata, p1, p2) |
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682 |
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683 if validatehash: |
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684 self._checkhash(revisiondata, node, p1, p2) |
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685 |
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686 rev = self._nodetorev.get(node) |
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687 if rev is not None: |
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688 return rev |
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689 |
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690 rev = self._addrawrevision( |
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691 node, revisiondata, transaction, linkrev, p1, p2 |
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692 ) |
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693 |
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694 self._revisioncache[node] = revisiondata |
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695 return rev |
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696 |
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697 def addgroup( |
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698 self, |
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699 deltas, |
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700 linkmapper, |
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701 transaction, |
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702 addrevisioncb=None, |
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|
703 duplicaterevisioncb=None, |
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704 maybemissingparents=False, |
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705 ): |
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706 empty = True |
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707 |
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|
708 for ( |
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|
709 node, |
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|
710 p1, |
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711 p2, |
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|
712 linknode, |
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713 deltabase, |
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|
714 delta, |
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|
715 wireflags, |
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|
716 sidedata, |
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|
717 ) in deltas: |
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718 storeflags = 0 |
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719 |
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720 if wireflags & repository.REVISION_FLAG_CENSORED: |
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721 storeflags |= FLAG_CENSORED |
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722 |
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723 if wireflags & ~repository.REVISION_FLAG_CENSORED: |
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724 raise SQLiteStoreError(b'unhandled revision flag') |
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725 |
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|
726 if maybemissingparents: |
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|
727 if p1 != sha1nodeconstants.nullid and not self.hasnode(p1): |
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|
728 p1 = sha1nodeconstants.nullid |
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|
729 storeflags |= FLAG_MISSING_P1 |
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730 |
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|
731 if p2 != sha1nodeconstants.nullid and not self.hasnode(p2): |
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|
732 p2 = sha1nodeconstants.nullid |
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|
733 storeflags |= FLAG_MISSING_P2 |
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734 |
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735 baserev = self.rev(deltabase) |
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736 |
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737 # If base is censored, delta must be full replacement in a single |
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|
738 # patch operation. |
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739 if baserev != nullrev and self.iscensored(baserev): |
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|
740 hlen = struct.calcsize(b'>lll') |
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|
741 oldlen = len(self.rawdata(deltabase, _verifyhash=False)) |
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742 newlen = len(delta) - hlen |
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|
743 |
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|
744 if delta[:hlen] != mdiff.replacediffheader(oldlen, newlen): |
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|
745 raise error.CensoredBaseError(self._path, deltabase) |
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746 |
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|
747 if not (storeflags & FLAG_CENSORED) and storageutil.deltaiscensored( |
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748 delta, baserev, lambda x: len(self.rawdata(x)) |
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749 ): |
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750 storeflags |= FLAG_CENSORED |
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751 |
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752 linkrev = linkmapper(linknode) |
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753 |
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754 if node in self._revisions: |
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755 # Possibly reset parents to make them proper. |
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756 entry = self._revisions[node] |
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757 |
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758 if ( |
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759 entry.flags & FLAG_MISSING_P1 |
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760 and p1 != sha1nodeconstants.nullid |
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761 ): |
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762 entry.p1node = p1 |
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763 entry.p1rev = self._nodetorev[p1] |
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764 entry.flags &= ~FLAG_MISSING_P1 |
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765 |
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766 self._db.execute( |
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767 'UPDATE fileindex SET p1rev=?, flags=? WHERE id=?', |
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768 (self._nodetorev[p1], entry.flags, entry.rid), |
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769 ) |
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770 |
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771 if ( |
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772 entry.flags & FLAG_MISSING_P2 |
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773 and p2 != sha1nodeconstants.nullid |
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774 ): |
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775 entry.p2node = p2 |
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776 entry.p2rev = self._nodetorev[p2] |
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777 entry.flags &= ~FLAG_MISSING_P2 |
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778 |
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779 self._db.execute( |
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780 'UPDATE fileindex SET p2rev=?, flags=? WHERE id=?', |
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781 (self._nodetorev[p1], entry.flags, entry.rid), |
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782 ) |
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783 |
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784 if duplicaterevisioncb: |
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785 duplicaterevisioncb(self, self.rev(node)) |
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786 empty = False |
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787 continue |
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788 |
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789 if deltabase == sha1nodeconstants.nullid: |
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790 text = mdiff.patch(b'', delta) |
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791 storedelta = None |
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792 else: |
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793 text = None |
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794 storedelta = (deltabase, delta) |
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795 |
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796 rev = self._addrawrevision( |
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797 node, |
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798 text, |
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799 transaction, |
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800 linkrev, |
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801 p1, |
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802 p2, |
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803 storedelta=storedelta, |
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804 flags=storeflags, |
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805 ) |
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806 |
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807 if addrevisioncb: |
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808 addrevisioncb(self, rev) |
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809 empty = False |
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810 |
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811 return not empty |
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812 |
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813 def censorrevision(self, tr, censor_nodes, tombstone=b''): |
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814 for node in censor_nodes: |
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815 self._censor_one_revision(tr, node, tombstone=tombstone) |
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816 |
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817 def _censor_one_revision(self, tr, censornode, tombstone): |
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818 tombstone = storageutil.packmeta({b'censored': tombstone}, b'') |
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819 |
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820 # This restriction is cargo culted from revlogs and makes no sense for |
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821 # SQLite, since columns can be resized at will. |
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822 if len(tombstone) > len(self.rawdata(censornode)): |
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823 raise error.Abort( |
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824 _(b'censor tombstone must be no longer than censored data') |
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825 ) |
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826 |
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827 # We need to replace the censored revision's data with the tombstone. |
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828 # But replacing that data will have implications for delta chains that |
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829 # reference it. |
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830 # |
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831 # While "better," more complex strategies are possible, we do something |
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832 # simple: we find delta chain children of the censored revision and we |
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833 # replace those incremental deltas with fulltexts of their corresponding |
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834 # revision. Then we delete the now-unreferenced delta and original |
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835 # revision and insert a replacement. |
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836 |
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837 # Find the delta to be censored. |
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838 censoreddeltaid = self._db.execute( |
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839 'SELECT deltaid FROM fileindex WHERE id=?', |
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840 (self._revisions[censornode].rid,), |
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841 ).fetchone()[0] |
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842 |
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843 # Find all its delta chain children. |
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844 # TODO once we support storing deltas for !files, we'll need to look |
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845 # for those delta chains too. |
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846 rows = list( |
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847 self._db.execute( |
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848 'SELECT id, pathid, node FROM fileindex ' |
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849 'WHERE deltabaseid=? OR deltaid=?', |
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850 (censoreddeltaid, censoreddeltaid), |
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851 ) |
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852 ) |
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853 |
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|
854 for row in rows: |
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|
855 rid, pathid, node = row |
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856 |
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857 fulltext = resolvedeltachain( |
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858 self._db, pathid, node, {}, {-1: None}, zstddctx=self._dctx |
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859 ) |
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860 |
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|
861 deltahash = hashutil.sha1(fulltext).digest() |
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862 |
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863 if self._compengine == b'zstd': |
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864 deltablob = self._cctx.compress(fulltext) |
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865 compression = COMPRESSION_ZSTD |
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866 elif self._compengine == b'zlib': |
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867 deltablob = zlib.compress(fulltext) |
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868 compression = COMPRESSION_ZLIB |
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|
869 elif self._compengine == b'none': |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
870 deltablob = fulltext |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
871 compression = COMPRESSION_NONE |
fed697fa1734
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parents:
diff
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|
872 else: |
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parents:
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|
873 raise error.ProgrammingError( |
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formatting: byteify all mercurial/ and hgext/ string literals
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parents:
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diff
changeset
|
874 b'unhandled compression engine: %s' % self._compengine |
43076
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parents:
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diff
changeset
|
875 ) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
876 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
877 if len(deltablob) >= len(fulltext): |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
878 deltablob = fulltext |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
879 compression = COMPRESSION_NONE |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
880 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
881 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
882 |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
883 self._db.execute( |
43507
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|
884 'UPDATE fileindex SET deltaid=?, deltabaseid=NULL ' |
adde839cc54f
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43117
diff
changeset
|
885 'WHERE id=?', |
43076
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parents:
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diff
changeset
|
886 (deltaid, rid), |
2372284d9457
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parents:
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changeset
|
887 ) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
888 |
fed697fa1734
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parents:
diff
changeset
|
889 # Now create the tombstone delta and replace the delta on the censored |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
890 # node. |
44062
2d49482d0dd4
hgext: replace references to hashlib.sha1 with hashutil.sha1
Augie Fackler <augie@google.com>
parents:
43507
diff
changeset
|
891 deltahash = hashutil.sha1(tombstone).digest() |
43076
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parents:
42814
diff
changeset
|
892 tombstonedeltaid = insertdelta( |
2372284d9457
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parents:
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|
893 self._db, COMPRESSION_NONE, deltahash, tombstone |
2372284d9457
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parents:
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changeset
|
894 ) |
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parents:
diff
changeset
|
895 |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
896 flags = self._revisions[censornode].flags |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
897 flags |= FLAG_CENSORED |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
898 |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
899 self._db.execute( |
43507
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parents:
43117
diff
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|
900 'UPDATE fileindex SET flags=?, deltaid=?, deltabaseid=NULL ' |
adde839cc54f
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parents:
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diff
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|
901 'WHERE pathid=? AND node=?', |
43076
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parents:
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diff
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|
902 (flags, tombstonedeltaid, self._pathid, censornode), |
2372284d9457
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parents:
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diff
changeset
|
903 ) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
904 |
43507
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parents:
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diff
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|
905 self._db.execute('DELETE FROM delta WHERE id=?', (censoreddeltaid,)) |
40326
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parents:
diff
changeset
|
906 |
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parents:
diff
changeset
|
907 self._refreshindex() |
fed697fa1734
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parents:
diff
changeset
|
908 self._revisioncache.clear() |
fed697fa1734
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parents:
diff
changeset
|
909 |
fed697fa1734
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parents:
diff
changeset
|
910 def getstrippoint(self, minlink): |
43076
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parents:
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diff
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|
911 return storageutil.resolvestripinfo( |
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parents:
42814
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|
912 minlink, |
2372284d9457
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parents:
42814
diff
changeset
|
913 len(self) - 1, |
2372284d9457
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parents:
42814
diff
changeset
|
914 [self.rev(n) for n in self.heads()], |
2372284d9457
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parents:
42814
diff
changeset
|
915 self.linkrev, |
2372284d9457
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parents:
42814
diff
changeset
|
916 self.parentrevs, |
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parents:
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changeset
|
917 ) |
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parents:
diff
changeset
|
918 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
919 def strip(self, minlink, transaction): |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
920 if not len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
921 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
922 |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
923 rev, _ignored = self.getstrippoint(minlink) |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
924 |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
925 if rev == len(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
926 return |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
927 |
fed697fa1734
sqlitestore: file storage backend using SQLite
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parents:
diff
changeset
|
928 for rev in self.revs(rev): |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
929 self._db.execute( |
43507
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parents:
43117
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changeset
|
930 'DELETE FROM fileindex WHERE pathid=? AND node=?', |
43076
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parents:
42814
diff
changeset
|
931 (self._pathid, self.node(rev)), |
2372284d9457
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parents:
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diff
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|
932 ) |
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diff
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|
933 |
fed697fa1734
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parents:
diff
changeset
|
934 # TODO how should we garbage collect data in delta table? |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
935 |
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parents:
diff
changeset
|
936 self._refreshindex() |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
937 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
938 # End of ifilemutation interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
939 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
940 # Start of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
941 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
942 def files(self): |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
943 return [] |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
944 |
46712
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
945 def sidedata(self, nodeorrev, _df=None): |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
946 # Not supported for now |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
947 return {} |
e8c11a2c96c0
delta: add sidedata field to revision delta
Raphaël Gomès <rgomes@octobus.net>
parents:
46711
diff
changeset
|
948 |
43076
2372284d9457
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parents:
42814
diff
changeset
|
949 def storageinfo( |
2372284d9457
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parents:
42814
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changeset
|
950 self, |
2372284d9457
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parents:
42814
diff
changeset
|
951 exclusivefiles=False, |
2372284d9457
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parents:
42814
diff
changeset
|
952 sharedfiles=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
953 revisionscount=False, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
954 trackedsize=False, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
955 storedsize=False, |
2372284d9457
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parents:
42814
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changeset
|
956 ): |
40326
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parents:
diff
changeset
|
957 d = {} |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
958 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
959 if exclusivefiles: |
43077
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diff
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|
960 d[b'exclusivefiles'] = [] |
40326
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parents:
diff
changeset
|
961 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
962 if sharedfiles: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
963 # TODO list sqlite file(s) here. |
43077
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parents:
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|
964 d[b'sharedfiles'] = [] |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
965 |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
966 if revisionscount: |
43077
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
967 d[b'revisionscount'] = len(self) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
968 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
969 if trackedsize: |
43077
687b865b95ad
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parents:
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diff
changeset
|
970 d[b'trackedsize'] = sum( |
43076
2372284d9457
formatting: blacken the codebase
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parents:
42814
diff
changeset
|
971 len(self.revision(node)) for node in self._nodetorev |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
972 ) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
973 |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
974 if storedsize: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
975 # TODO implement this? |
43077
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parents:
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|
976 d[b'storedsize'] = None |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
977 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
978 return d |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
979 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
980 def verifyintegrity(self, state): |
43077
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parents:
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|
981 state[b'skipread'] = set() |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
982 |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
983 for rev in self: |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
984 node = self.node(rev) |
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sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
985 |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
986 try: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
987 self.revision(node) |
fed697fa1734
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
988 except Exception as e: |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
989 yield sqliteproblem( |
43077
687b865b95ad
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Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
990 error=_(b'unpacking %s: %s') % (short(node), e), node=node |
43076
2372284d9457
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Augie Fackler <augie@google.com>
parents:
42814
diff
changeset
|
991 ) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
992 |
43077
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
993 state[b'skipread'].add(node) |
40326
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
994 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
995 # End of ifilestorage interface. |
fed697fa1734
sqlitestore: file storage backend using SQLite
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
996 |
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997 def _checkhash(self, fulltext, node, p1=None, p2=None): |
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998 if p1 is None and p2 is None: |
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999 p1, p2 = self.parents(node) |
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1000 |
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1001 if node == storageutil.hashrevisionsha1(fulltext, p1, p2): |
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1002 return |
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|
1003 |
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1004 try: |
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1005 del self._revisioncache[node] |
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1006 except KeyError: |
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|
1007 pass |
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|
1008 |
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|
1009 if storageutil.iscensoredtext(fulltext): |
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1010 raise error.CensoredNodeError(self._path, node, fulltext) |
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1011 |
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1012 raise SQLiteStoreError(_(b'integrity check failed on %s') % self._path) |
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1013 |
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1014 def _addrawrevision( |
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1015 self, |
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1016 node, |
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|
1017 revisiondata, |
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1018 transaction, |
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|
1019 linkrev, |
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|
1020 p1, |
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1021 p2, |
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1022 storedelta=None, |
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1023 flags=0, |
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1024 ): |
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1025 if self._pathid is None: |
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|
1026 res = self._db.execute( |
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1027 'INSERT INTO filepath (path) VALUES (?)', (self._path,) |
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1028 ) |
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1029 self._pathid = res.lastrowid |
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1030 |
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1031 # For simplicity, always store a delta against p1. |
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1032 # TODO we need a lot more logic here to make behavior reasonable. |
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|
1033 |
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|
1034 if storedelta: |
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diff
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|
1035 deltabase, delta = storedelta |
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|
1036 |
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1037 if isinstance(deltabase, int): |
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1038 deltabase = self.node(deltabase) |
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|
1039 |
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1040 else: |
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|
1041 assert revisiondata is not None |
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|
1042 deltabase = p1 |
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1043 |
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1044 if deltabase == sha1nodeconstants.nullid: |
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|
1045 delta = revisiondata |
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1046 else: |
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1047 delta = mdiff.textdiff( |
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1048 self.revision(self.rev(deltabase)), revisiondata |
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1049 ) |
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1050 |
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1051 # File index stores a pointer to its delta and the parent delta. |
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1052 # The parent delta is stored via a pointer to the fileindex PK. |
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1053 if deltabase == sha1nodeconstants.nullid: |
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1054 baseid = None |
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1055 else: |
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|
1056 baseid = self._revisions[deltabase].rid |
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|
1057 |
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1058 # Deltas are stored with a hash of their content. This allows |
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1059 # us to de-duplicate. The table is configured to ignore conflicts |
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1060 # and it is faster to just insert and silently noop than to look |
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1061 # first. |
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1062 deltahash = hashutil.sha1(delta).digest() |
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1063 |
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1064 if self._compengine == b'zstd': |
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1065 deltablob = self._cctx.compress(delta) |
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|
1066 compression = COMPRESSION_ZSTD |
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1067 elif self._compengine == b'zlib': |
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|
1068 deltablob = zlib.compress(delta) |
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parents:
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changeset
|
1069 compression = COMPRESSION_ZLIB |
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1070 elif self._compengine == b'none': |
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|
1071 deltablob = delta |
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|
1072 compression = COMPRESSION_NONE |
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|
1073 else: |
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|
1074 raise error.ProgrammingError( |
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|
1075 b'unhandled compression engine: %s' % self._compengine |
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|
1076 ) |
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|
1077 |
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|
1078 # Don't store compressed data if it isn't practical. |
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parents:
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changeset
|
1079 if len(deltablob) >= len(delta): |
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diff
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|
1080 deltablob = delta |
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|
1081 compression = COMPRESSION_NONE |
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|
1082 |
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diff
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|
1083 deltaid = insertdelta(self._db, compression, deltahash, deltablob) |
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|
1084 |
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diff
changeset
|
1085 rev = len(self) |
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diff
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|
1086 |
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|
1087 if p1 == sha1nodeconstants.nullid: |
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|
1088 p1rev = nullrev |
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|
1089 else: |
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|
1090 p1rev = self._nodetorev[p1] |
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|
1091 |
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|
1092 if p2 == sha1nodeconstants.nullid: |
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|
1093 p2rev = nullrev |
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|
1094 else: |
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changeset
|
1095 p2rev = self._nodetorev[p2] |
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diff
changeset
|
1096 |
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changeset
|
1097 rid = self._db.execute( |
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|
1098 'INSERT INTO fileindex (' |
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|
1099 ' pathid, revnum, node, p1rev, p2rev, linkrev, flags, ' |
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|
1100 ' deltaid, deltabaseid) ' |
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|
1101 ' VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)', |
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1102 ( |
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1103 self._pathid, |
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|
1104 rev, |
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|
1105 node, |
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|
1106 p1rev, |
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|
1107 p2rev, |
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|
1108 linkrev, |
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|
1109 flags, |
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|
1110 deltaid, |
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|
1111 baseid, |
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1112 ), |
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|
1113 ).lastrowid |
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diff
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|
1114 |
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|
1115 entry = revisionentry( |
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diff
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|
1116 rid=rid, |
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diff
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|
1117 rev=rev, |
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diff
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|
1118 node=node, |
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|
1119 p1rev=p1rev, |
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|
1120 p2rev=p2rev, |
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|
1121 p1node=p1, |
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|
1122 p2node=p2, |
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diff
changeset
|
1123 linkrev=linkrev, |
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parents:
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|
1124 flags=flags, |
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|
1125 ) |
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|
1126 |
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|
1127 self._nodetorev[node] = rev |
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|
1128 self._revtonode[rev] = node |
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|
1129 self._revisions[node] = entry |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1130 |
46508
f7b61ad3c64a
revlog: change addrevision to return the new revision, not node
Joerg Sonnenberger <joerg@bec.de>
parents:
45788
diff
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|
1131 return rev |
40326
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|
1132 |
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1133 |
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|
1134 class sqliterepository(localrepo.localrepository): |
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parents:
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|
1135 def cancopy(self): |
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|
1136 return False |
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|
1137 |
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|
1138 def transaction(self, *args, **kwargs): |
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|
1139 current = self.currenttransaction() |
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|
1140 |
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|
1141 tr = super(sqliterepository, self).transaction(*args, **kwargs) |
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parents:
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|
1142 |
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|
1143 if current: |
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|
1144 return tr |
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|
1145 |
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|
1146 self._dbconn.execute('BEGIN TRANSACTION') |
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1147 |
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|
1148 def committransaction(_): |
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|
1149 self._dbconn.commit() |
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|
1150 |
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1151 tr.addfinalize(b'sqlitestore', committransaction) |
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1152 |
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|
1153 return tr |
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|
1154 |
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|
1155 @property |
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|
1156 def _dbconn(self): |
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|
1157 # SQLite connections can only be used on the thread that created |
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|
1158 # them. In most cases, this "just works." However, hgweb uses |
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|
1159 # multiple threads. |
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|
1160 tid = threading.current_thread().ident |
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|
1161 |
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|
1162 if self._db: |
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|
1163 if self._db[0] == tid: |
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|
1164 return self._db[1] |
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|
1165 |
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1166 db = makedb(self.svfs.join(b'db.sqlite')) |
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|
1167 self._db = (tid, db) |
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|
1168 |
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changeset
|
1169 return db |
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changeset
|
1170 |
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|
1171 |
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|
1172 def makedb(path): |
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|
1173 """Construct a database handle for a database at path.""" |
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parents:
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changeset
|
1174 |
40410
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py3: make sure we pass sysstr in sqlite3.connect()
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
40392
diff
changeset
|
1175 db = sqlite3.connect(encoding.strfromlocal(path)) |
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|
1176 db.text_factory = bytes |
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|
1177 |
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|
1178 res = db.execute('PRAGMA user_version').fetchone()[0] |
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|
1179 |
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changeset
|
1180 # New database. |
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changeset
|
1181 if res == 0: |
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parents:
diff
changeset
|
1182 for statement in CREATE_SCHEMA: |
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parents:
diff
changeset
|
1183 db.execute(statement) |
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parents:
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changeset
|
1184 |
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diff
changeset
|
1185 db.commit() |
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|
1186 |
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parents:
diff
changeset
|
1187 elif res == CURRENT_SCHEMA_VERSION: |
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parents:
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|
1188 pass |
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diff
changeset
|
1189 |
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|
1190 else: |
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|
1191 raise error.Abort(_(b'sqlite database has unrecognized version')) |
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|
1192 |
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|
1193 db.execute('PRAGMA journal_mode=WAL') |
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|
1194 |
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diff
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|
1195 return db |
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|
1196 |
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|
1197 |
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|
1198 def featuresetup(ui, supported): |
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|
1199 supported.add(REQUIREMENT) |
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|
1200 |
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|
1201 if zstd: |
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diff
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|
1202 supported.add(REQUIREMENT_ZSTD) |
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diff
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|
1203 |
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diff
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|
1204 supported.add(REQUIREMENT_ZLIB) |
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parents:
diff
changeset
|
1205 supported.add(REQUIREMENT_NONE) |
40390
7e3b6c4f01a2
localrepo: support marking repos as having shallow file storage
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40389
diff
changeset
|
1206 supported.add(REQUIREMENT_SHALLOW_FILES) |
45372
77b8588dd84e
requirements: introduce new requirements related module
Pulkit Goyal <7895pulkit@gmail.com>
parents:
44062
diff
changeset
|
1207 supported.add(requirements.NARROW_REQUIREMENT) |
40326
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|
1208 |
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|
1209 |
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diff
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|
1210 def newreporequirements(orig, ui, createopts): |
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|
1211 if createopts[b'backend'] != b'sqlite': |
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|
1212 return orig(ui, createopts) |
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|
1213 |
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|
1214 # This restriction can be lifted once we have more confidence. |
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|
1215 if b'sharedrepo' in createopts: |
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parents:
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|
1216 raise error.Abort( |
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cleanup: join string literals that are already on one line
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parents:
43077
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|
1217 _(b'shared repositories not supported with SQLite store') |
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|
1218 ) |
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|
1219 |
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|
1220 # This filtering is out of an abundance of caution: we want to ensure |
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diff
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|
1221 # we honor creation options and we do that by annotating exactly the |
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diff
changeset
|
1222 # creation options we recognize. |
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|
1223 known = { |
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1224 b'narrowfiles', |
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|
1225 b'backend', |
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|
1226 b'shallowfilestore', |
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|
1227 } |
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|
1228 |
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|
1229 unsupported = set(createopts) - known |
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|
1230 if unsupported: |
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|
1231 raise error.Abort( |
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parents:
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|
1232 _(b'SQLite store does not support repo creation option: %s') |
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|
1233 % b', '.join(sorted(unsupported)) |
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|
1234 ) |
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|
1235 |
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|
1236 # Since we're a hybrid store that still relies on revlogs, we fall back |
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diff
changeset
|
1237 # to using the revlogv1 backend's storage requirements then adding our |
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parents:
diff
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|
1238 # own requirement. |
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|
1239 createopts[b'backend'] = b'revlogv1' |
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|
1240 requirements = orig(ui, createopts) |
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|
1241 requirements.add(REQUIREMENT) |
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changeset
|
1242 |
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|
1243 compression = ui.config(b'storage', b'sqlite.compression') |
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|
1244 |
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changeset
|
1245 if compression == b'zstd' and not zstd: |
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parents:
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diff
changeset
|
1246 raise error.Abort( |
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changeset
|
1247 _( |
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1248 b'storage.sqlite.compression set to "zstd" but ' |
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1249 b'zstandard compression not available to this ' |
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1250 b'Mercurial install' |
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1251 ) |
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1252 ) |
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1253 |
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1254 if compression == b'zstd': |
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1255 requirements.add(REQUIREMENT_ZSTD) |
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1256 elif compression == b'zlib': |
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1257 requirements.add(REQUIREMENT_ZLIB) |
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1258 elif compression == b'none': |
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1259 requirements.add(REQUIREMENT_NONE) |
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1260 else: |
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1261 raise error.Abort( |
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1262 _( |
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1263 b'unknown compression engine defined in ' |
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1264 b'storage.sqlite.compression: %s' |
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1265 ) |
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1266 % compression |
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1267 ) |
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1268 |
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1269 if createopts.get(b'shallowfilestore'): |
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1270 requirements.add(REQUIREMENT_SHALLOW_FILES) |
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1271 |
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1272 return requirements |
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1273 |
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1274 |
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1275 @interfaceutil.implementer(repository.ilocalrepositoryfilestorage) |
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1276 class sqlitefilestorage: |
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1277 """Repository file storage backed by SQLite.""" |
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1278 |
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1279 def file(self, path): |
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1280 if path[0] == b'/': |
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1281 path = path[1:] |
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1282 |
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1283 if REQUIREMENT_ZSTD in self.requirements: |
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1284 compression = b'zstd' |
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1285 elif REQUIREMENT_ZLIB in self.requirements: |
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1286 compression = b'zlib' |
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1287 elif REQUIREMENT_NONE in self.requirements: |
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1288 compression = b'none' |
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1289 else: |
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1290 raise error.Abort( |
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1291 _( |
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1292 b'unable to determine what compression engine ' |
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1293 b'to use for SQLite storage' |
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1294 ) |
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1295 ) |
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1296 |
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1297 return sqlitefilestore(self._dbconn, path, compression) |
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1298 |
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1299 |
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1300 def makefilestorage(orig, requirements, features, **kwargs): |
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1301 """Produce a type conforming to ``ilocalrepositoryfilestorage``.""" |
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1302 if REQUIREMENT in requirements: |
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1303 if REQUIREMENT_SHALLOW_FILES in requirements: |
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1304 features.add(repository.REPO_FEATURE_SHALLOW_FILE_STORAGE) |
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1305 |
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1306 return sqlitefilestorage |
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1307 else: |
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1308 return orig(requirements=requirements, features=features, **kwargs) |
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1309 |
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1310 |
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1311 def makemain(orig, ui, requirements, **kwargs): |
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1312 if REQUIREMENT in requirements: |
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1313 if REQUIREMENT_ZSTD in requirements and not zstd: |
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1314 raise error.Abort( |
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1315 _( |
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1316 b'repository uses zstandard compression, which ' |
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1317 b'is not available to this Mercurial install' |
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1318 ) |
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1319 ) |
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1320 |
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1321 return sqliterepository |
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1322 |
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1323 return orig(requirements=requirements, **kwargs) |
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1324 |
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1325 |
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1326 def verifierinit(orig, self, *args, **kwargs): |
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1327 orig(self, *args, **kwargs) |
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1328 |
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1329 # We don't care that files in the store don't align with what is |
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1330 # advertised. So suppress these warnings. |
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1331 self.warnorphanstorefiles = False |
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1332 |
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1333 |
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1334 def extsetup(ui): |
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1335 localrepo.featuresetupfuncs.add(featuresetup) |
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1336 extensions.wrapfunction( |
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1337 localrepo, 'newreporequirements', newreporequirements |
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1338 ) |
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1339 extensions.wrapfunction(localrepo, 'makefilestorage', makefilestorage) |
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1340 extensions.wrapfunction(localrepo, 'makemain', makemain) |
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1341 extensions.wrapfunction(verify.verifier, '__init__', verifierinit) |
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1342 |
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1343 |
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1344 def reposetup(ui, repo): |
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1345 if isinstance(repo, sqliterepository): |
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1346 repo._db = None |
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1347 |
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1348 # TODO check for bundlerepository? |