Mercurial > hg
annotate mercurial/interfaces/repository.py @ 49753:ff7134e03629
peer: have `repo.peer` take an optional `path` argument
We are ready to start to actually set the value now.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Sat, 03 Dec 2022 00:16:07 +0100 |
parents | 611ccb631cbc |
children | f34887316f1f |
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1 # repository.py - Interfaces and base classes for repositories and peers. |
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2 # coding: utf-8 |
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3 # |
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4 # Copyright 2017 Gregory Szorc <gregory.szorc@gmail.com> |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2 or any later version. |
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8 |
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9 |
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10 from ..i18n import _ |
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11 from .. import error |
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12 from . import util as interfaceutil |
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13 |
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14 # Local repository feature string. |
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15 |
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16 # Revlogs are being used for file storage. |
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17 REPO_FEATURE_REVLOG_FILE_STORAGE = b'revlogfilestorage' |
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18 # The storage part of the repository is shared from an external source. |
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19 REPO_FEATURE_SHARED_STORAGE = b'sharedstore' |
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20 # LFS supported for backing file storage. |
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21 REPO_FEATURE_LFS = b'lfs' |
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22 # Repository supports being stream cloned. |
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23 REPO_FEATURE_STREAM_CLONE = b'streamclone' |
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24 # Repository supports (at least) some sidedata to be stored |
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25 REPO_FEATURE_SIDE_DATA = b'side-data' |
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26 # Files storage may lack data for all ancestors. |
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27 REPO_FEATURE_SHALLOW_FILE_STORAGE = b'shallowfilestorage' |
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28 |
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29 REVISION_FLAG_CENSORED = 1 << 15 |
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30 REVISION_FLAG_ELLIPSIS = 1 << 14 |
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31 REVISION_FLAG_EXTSTORED = 1 << 13 |
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32 REVISION_FLAG_HASCOPIESINFO = 1 << 12 |
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33 |
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34 REVISION_FLAGS_KNOWN = ( |
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35 REVISION_FLAG_CENSORED |
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36 | REVISION_FLAG_ELLIPSIS |
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37 | REVISION_FLAG_EXTSTORED |
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38 | REVISION_FLAG_HASCOPIESINFO |
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39 ) |
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40 |
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41 CG_DELTAMODE_STD = b'default' |
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42 CG_DELTAMODE_PREV = b'previous' |
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43 CG_DELTAMODE_FULL = b'fulltext' |
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44 CG_DELTAMODE_P1 = b'p1' |
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45 |
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46 |
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47 ## Cache related constants: |
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48 # |
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49 # Used to control which cache should be warmed in a repo.updatecaches(…) call. |
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50 |
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51 # Warm branchmaps of all known repoview's filter-level |
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52 CACHE_BRANCHMAP_ALL = b"branchmap-all" |
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53 # Warm branchmaps of repoview's filter-level used by server |
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54 CACHE_BRANCHMAP_SERVED = b"branchmap-served" |
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55 # Warm internal changelog cache (eg: persistent nodemap) |
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56 CACHE_CHANGELOG_CACHE = b"changelog-cache" |
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57 # Warm full manifest cache |
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58 CACHE_FULL_MANIFEST = b"full-manifest" |
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59 # Warm file-node-tags cache |
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60 CACHE_FILE_NODE_TAGS = b"file-node-tags" |
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61 # Warm internal manifestlog cache (eg: persistent nodemap) |
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62 CACHE_MANIFESTLOG_CACHE = b"manifestlog-cache" |
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63 # Warn rev branch cache |
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64 CACHE_REV_BRANCH = b"rev-branch-cache" |
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65 # Warm tags' cache for default repoview' |
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66 CACHE_TAGS_DEFAULT = b"tags-default" |
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67 # Warm tags' cache for repoview's filter-level used by server |
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68 CACHE_TAGS_SERVED = b"tags-served" |
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69 |
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70 # the cache to warm by default after a simple transaction |
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71 # (this is a mutable set to let extension update it) |
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72 CACHES_DEFAULT = { |
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73 CACHE_BRANCHMAP_SERVED, |
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74 } |
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75 |
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76 # the caches to warm when warming all of them |
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77 # (this is a mutable set to let extension update it) |
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78 CACHES_ALL = { |
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79 CACHE_BRANCHMAP_SERVED, |
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80 CACHE_BRANCHMAP_ALL, |
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81 CACHE_CHANGELOG_CACHE, |
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82 CACHE_FILE_NODE_TAGS, |
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83 CACHE_FULL_MANIFEST, |
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84 CACHE_MANIFESTLOG_CACHE, |
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85 CACHE_TAGS_DEFAULT, |
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86 CACHE_TAGS_SERVED, |
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87 } |
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88 |
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89 # the cache to warm by default on simple call |
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90 # (this is a mutable set to let extension update it) |
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91 CACHES_POST_CLONE = CACHES_ALL.copy() |
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92 CACHES_POST_CLONE.discard(CACHE_FILE_NODE_TAGS) |
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93 |
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94 |
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95 class ipeerconnection(interfaceutil.Interface): |
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96 """Represents a "connection" to a repository. |
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97 |
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98 This is the base interface for representing a connection to a repository. |
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99 It holds basic properties and methods applicable to all peer types. |
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100 |
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101 This is not a complete interface definition and should not be used |
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102 outside of this module. |
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103 """ |
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104 |
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105 ui = interfaceutil.Attribute("""ui.ui instance""") |
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106 path = interfaceutil.Attribute("""a urlutil.path instance or None""") |
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107 |
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108 def url(): |
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109 """Returns a URL string representing this peer. |
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110 |
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111 Currently, implementations expose the raw URL used to construct the |
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112 instance. It may contain credentials as part of the URL. The |
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113 expectations of the value aren't well-defined and this could lead to |
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114 data leakage. |
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115 |
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116 TODO audit/clean consumers and more clearly define the contents of this |
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117 value. |
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118 """ |
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119 |
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120 def local(): |
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121 """Returns a local repository instance. |
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122 |
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123 If the peer represents a local repository, returns an object that |
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124 can be used to interface with it. Otherwise returns ``None``. |
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125 """ |
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126 |
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127 def canpush(): |
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128 """Returns a boolean indicating if this peer can be pushed to.""" |
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129 |
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130 def close(): |
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131 """Close the connection to this peer. |
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132 |
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133 This is called when the peer will no longer be used. Resources |
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134 associated with the peer should be cleaned up. |
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135 """ |
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136 |
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137 |
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138 class ipeercapabilities(interfaceutil.Interface): |
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139 """Peer sub-interface related to capabilities.""" |
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140 |
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141 def capable(name): |
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142 """Determine support for a named capability. |
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143 |
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144 Returns ``False`` if capability not supported. |
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145 |
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146 Returns ``True`` if boolean capability is supported. Returns a string |
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147 if capability support is non-boolean. |
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148 |
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149 Capability strings may or may not map to wire protocol capabilities. |
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150 """ |
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151 |
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152 def requirecap(name, purpose): |
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153 """Require a capability to be present. |
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154 |
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155 Raises a ``CapabilityError`` if the capability isn't present. |
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156 """ |
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157 |
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158 |
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159 class ipeercommands(interfaceutil.Interface): |
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160 """Client-side interface for communicating over the wire protocol. |
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161 |
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162 This interface is used as a gateway to the Mercurial wire protocol. |
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163 methods commonly call wire protocol commands of the same name. |
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164 """ |
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165 |
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166 def branchmap(): |
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167 """Obtain heads in named branches. |
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168 |
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169 Returns a dict mapping branch name to an iterable of nodes that are |
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170 heads on that branch. |
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171 """ |
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172 |
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173 def capabilities(): |
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174 """Obtain capabilities of the peer. |
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175 |
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176 Returns a set of string capabilities. |
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177 """ |
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178 |
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179 def clonebundles(): |
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180 """Obtains the clone bundles manifest for the repo. |
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181 |
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182 Returns the manifest as unparsed bytes. |
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183 """ |
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184 |
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185 def debugwireargs(one, two, three=None, four=None, five=None): |
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186 """Used to facilitate debugging of arguments passed over the wire.""" |
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187 |
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188 def getbundle(source, **kwargs): |
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189 """Obtain remote repository data as a bundle. |
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190 |
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191 This command is how the bulk of repository data is transferred from |
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192 the peer to the local repository |
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193 |
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194 Returns a generator of bundle data. |
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195 """ |
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196 |
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197 def heads(): |
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198 """Determine all known head revisions in the peer. |
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199 |
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200 Returns an iterable of binary nodes. |
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201 """ |
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202 |
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203 def known(nodes): |
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204 """Determine whether multiple nodes are known. |
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205 |
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206 Accepts an iterable of nodes whose presence to check for. |
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207 |
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208 Returns an iterable of booleans indicating of the corresponding node |
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209 at that index is known to the peer. |
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210 """ |
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211 |
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212 def listkeys(namespace): |
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213 """Obtain all keys in a pushkey namespace. |
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214 |
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215 Returns an iterable of key names. |
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216 """ |
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217 |
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218 def lookup(key): |
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219 """Resolve a value to a known revision. |
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220 |
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221 Returns a binary node of the resolved revision on success. |
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222 """ |
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223 |
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224 def pushkey(namespace, key, old, new): |
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225 """Set a value using the ``pushkey`` protocol. |
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226 |
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227 Arguments correspond to the pushkey namespace and key to operate on and |
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228 the old and new values for that key. |
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229 |
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230 Returns a string with the peer result. The value inside varies by the |
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231 namespace. |
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232 """ |
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233 |
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234 def stream_out(): |
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235 """Obtain streaming clone data. |
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236 |
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237 Successful result should be a generator of data chunks. |
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238 """ |
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239 |
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240 def unbundle(bundle, heads, url): |
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241 """Transfer repository data to the peer. |
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242 |
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243 This is how the bulk of data during a push is transferred. |
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244 |
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245 Returns the integer number of heads added to the peer. |
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246 """ |
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247 |
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248 |
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249 class ipeerlegacycommands(interfaceutil.Interface): |
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250 """Interface for implementing support for legacy wire protocol commands. |
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251 |
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252 Wire protocol commands transition to legacy status when they are no longer |
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253 used by modern clients. To facilitate identifying which commands are |
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254 legacy, the interfaces are split. |
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255 """ |
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256 |
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257 def between(pairs): |
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258 """Obtain nodes between pairs of nodes. |
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259 |
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260 ``pairs`` is an iterable of node pairs. |
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261 |
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262 Returns an iterable of iterables of nodes corresponding to each |
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263 requested pair. |
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264 """ |
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265 |
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266 def branches(nodes): |
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267 """Obtain ancestor changesets of specific nodes back to a branch point. |
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268 |
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269 For each requested node, the peer finds the first ancestor node that is |
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270 a DAG root or is a merge. |
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271 |
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272 Returns an iterable of iterables with the resolved values for each node. |
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273 """ |
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274 |
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275 def changegroup(nodes, source): |
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276 """Obtain a changegroup with data for descendants of specified nodes.""" |
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277 |
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278 def changegroupsubset(bases, heads, source): |
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279 pass |
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280 |
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281 |
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282 class ipeercommandexecutor(interfaceutil.Interface): |
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283 """Represents a mechanism to execute remote commands. |
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284 |
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285 This is the primary interface for requesting that wire protocol commands |
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286 be executed. Instances of this interface are active in a context manager |
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287 and have a well-defined lifetime. When the context manager exits, all |
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288 outstanding requests are waited on. |
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289 """ |
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290 |
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291 def callcommand(name, args): |
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292 """Request that a named command be executed. |
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293 |
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294 Receives the command name and a dictionary of command arguments. |
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295 |
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296 Returns a ``concurrent.futures.Future`` that will resolve to the |
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297 result of that command request. That exact value is left up to |
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298 the implementation and possibly varies by command. |
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299 |
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300 Not all commands can coexist with other commands in an executor |
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301 instance: it depends on the underlying wire protocol transport being |
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302 used and the command itself. |
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303 |
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304 Implementations MAY call ``sendcommands()`` automatically if the |
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305 requested command can not coexist with other commands in this executor. |
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306 |
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307 Implementations MAY call ``sendcommands()`` automatically when the |
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308 future's ``result()`` is called. So, consumers using multiple |
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309 commands with an executor MUST ensure that ``result()`` is not called |
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310 until all command requests have been issued. |
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311 """ |
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312 |
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313 def sendcommands(): |
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314 """Trigger submission of queued command requests. |
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315 |
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316 Not all transports submit commands as soon as they are requested to |
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317 run. When called, this method forces queued command requests to be |
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318 issued. It will no-op if all commands have already been sent. |
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319 |
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320 When called, no more new commands may be issued with this executor. |
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321 """ |
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322 |
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323 def close(): |
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324 """Signal that this command request is finished. |
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325 |
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326 When called, no more new commands may be issued. All outstanding |
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327 commands that have previously been issued are waited on before |
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328 returning. This not only includes waiting for the futures to resolve, |
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329 but also waiting for all response data to arrive. In other words, |
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330 calling this waits for all on-wire state for issued command requests |
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331 to finish. |
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332 |
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333 When used as a context manager, this method is called when exiting the |
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334 context manager. |
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335 |
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336 This method may call ``sendcommands()`` if there are buffered commands. |
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337 """ |
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338 |
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339 |
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340 class ipeerrequests(interfaceutil.Interface): |
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341 """Interface for executing commands on a peer.""" |
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342 |
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343 limitedarguments = interfaceutil.Attribute( |
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344 """True if the peer cannot receive large argument value for commands.""" |
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345 ) |
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346 |
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347 def commandexecutor(): |
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348 """A context manager that resolves to an ipeercommandexecutor. |
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349 |
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350 The object this resolves to can be used to issue command requests |
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351 to the peer. |
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352 |
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353 Callers should call its ``callcommand`` method to issue command |
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354 requests. |
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355 |
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356 A new executor should be obtained for each distinct set of commands |
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357 (possibly just a single command) that the consumer wants to execute |
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358 as part of a single operation or round trip. This is because some |
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359 peers are half-duplex and/or don't support persistent connections. |
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360 e.g. in the case of HTTP peers, commands sent to an executor represent |
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361 a single HTTP request. While some peers may support multiple command |
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362 sends over the wire per executor, consumers need to code to the least |
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363 capable peer. So it should be assumed that command executors buffer |
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364 called commands until they are told to send them and that each |
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365 command executor could result in a new connection or wire-level request |
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366 being issued. |
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367 """ |
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368 |
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369 |
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370 class ipeerbase(ipeerconnection, ipeercapabilities, ipeerrequests): |
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371 """Unified interface for peer repositories. |
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372 |
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373 All peer instances must conform to this interface. |
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374 """ |
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375 |
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376 |
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377 class ipeerv2(ipeerconnection, ipeercapabilities, ipeerrequests): |
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378 """Unified peer interface for wire protocol version 2 peers.""" |
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379 |
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380 apidescriptor = interfaceutil.Attribute( |
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381 """Data structure holding description of server API.""" |
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382 ) |
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383 |
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384 |
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385 @interfaceutil.implementer(ipeerbase) |
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386 class peer: |
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387 """Base class for peer repositories.""" |
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388 |
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389 limitedarguments = False |
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390 |
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391 def __init__(self, ui, path=None): |
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392 self.ui = ui |
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393 self.path = path |
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394 |
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395 def capable(self, name): |
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396 caps = self.capabilities() |
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397 if name in caps: |
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398 return True |
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399 |
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400 name = b'%s=' % name |
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401 for cap in caps: |
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402 if cap.startswith(name): |
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403 return cap[len(name) :] |
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404 |
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405 return False |
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406 |
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407 def requirecap(self, name, purpose): |
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408 if self.capable(name): |
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409 return |
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410 |
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411 raise error.CapabilityError( |
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412 _( |
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413 b'cannot %s; remote repository does not support the ' |
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414 b'\'%s\' capability' |
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415 ) |
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416 % (purpose, name) |
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417 ) |
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418 |
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419 |
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420 class iverifyproblem(interfaceutil.Interface): |
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421 """Represents a problem with the integrity of the repository. |
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422 |
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423 Instances of this interface are emitted to describe an integrity issue |
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424 with a repository (e.g. corrupt storage, missing data, etc). |
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425 |
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426 Instances are essentially messages associated with severity. |
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427 """ |
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428 |
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429 warning = interfaceutil.Attribute( |
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430 """Message indicating a non-fatal problem.""" |
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431 ) |
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432 |
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433 error = interfaceutil.Attribute("""Message indicating a fatal problem.""") |
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434 |
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435 node = interfaceutil.Attribute( |
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436 """Revision encountering the problem. |
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437 |
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438 ``None`` means the problem doesn't apply to a single revision. |
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439 """ |
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440 ) |
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441 |
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442 |
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443 class irevisiondelta(interfaceutil.Interface): |
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444 """Represents a delta between one revision and another. |
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445 |
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446 Instances convey enough information to allow a revision to be exchanged |
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447 with another repository. |
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448 |
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449 Instances represent the fulltext revision data or a delta against |
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450 another revision. Therefore the ``revision`` and ``delta`` attributes |
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451 are mutually exclusive. |
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452 |
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453 Typically used for changegroup generation. |
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454 """ |
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455 |
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456 node = interfaceutil.Attribute("""20 byte node of this revision.""") |
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457 |
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458 p1node = interfaceutil.Attribute( |
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459 """20 byte node of 1st parent of this revision.""" |
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460 ) |
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461 |
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462 p2node = interfaceutil.Attribute( |
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463 """20 byte node of 2nd parent of this revision.""" |
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464 ) |
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465 |
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466 linknode = interfaceutil.Attribute( |
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467 """20 byte node of the changelog revision this node is linked to.""" |
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468 ) |
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469 |
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470 flags = interfaceutil.Attribute( |
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471 """2 bytes of integer flags that apply to this revision. |
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472 |
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473 This is a bitwise composition of the ``REVISION_FLAG_*`` constants. |
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474 """ |
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475 ) |
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476 |
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477 basenode = interfaceutil.Attribute( |
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478 """20 byte node of the revision this data is a delta against. |
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479 |
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480 ``nullid`` indicates that the revision is a full revision and not |
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481 a delta. |
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482 """ |
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483 ) |
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484 |
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485 baserevisionsize = interfaceutil.Attribute( |
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486 """Size of base revision this delta is against. |
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487 |
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488 May be ``None`` if ``basenode`` is ``nullid``. |
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489 """ |
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490 ) |
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491 |
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492 revision = interfaceutil.Attribute( |
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493 """Raw fulltext of revision data for this node.""" |
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494 ) |
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495 |
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496 delta = interfaceutil.Attribute( |
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497 """Delta between ``basenode`` and ``node``. |
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498 |
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499 Stored in the bdiff delta format. |
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500 """ |
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501 ) |
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502 |
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503 sidedata = interfaceutil.Attribute( |
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504 """Raw sidedata bytes for the given revision.""" |
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505 ) |
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506 |
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507 protocol_flags = interfaceutil.Attribute( |
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508 """Single byte of integer flags that can influence the protocol. |
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509 |
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510 This is a bitwise composition of the ``storageutil.CG_FLAG*`` constants. |
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511 """ |
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512 ) |
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513 |
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514 |
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515 class ifilerevisionssequence(interfaceutil.Interface): |
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516 """Contains index data for all revisions of a file. |
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517 |
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518 Types implementing this behave like lists of tuples. The index |
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519 in the list corresponds to the revision number. The values contain |
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520 index metadata. |
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521 |
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522 The *null* revision (revision number -1) is always the last item |
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523 in the index. |
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524 """ |
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525 |
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526 def __len__(): |
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527 """The total number of revisions.""" |
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528 |
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529 def __getitem__(rev): |
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530 """Returns the object having a specific revision number. |
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531 |
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532 Returns an 8-tuple with the following fields: |
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533 |
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534 offset+flags |
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535 Contains the offset and flags for the revision. 64-bit unsigned |
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536 integer where first 6 bytes are the offset and the next 2 bytes |
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537 are flags. The offset can be 0 if it is not used by the store. |
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538 compressed size |
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539 Size of the revision data in the store. It can be 0 if it isn't |
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540 needed by the store. |
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541 uncompressed size |
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542 Fulltext size. It can be 0 if it isn't needed by the store. |
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543 base revision |
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544 Revision number of revision the delta for storage is encoded |
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545 against. -1 indicates not encoded against a base revision. |
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546 link revision |
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547 Revision number of changelog revision this entry is related to. |
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548 p1 revision |
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549 Revision number of 1st parent. -1 if no 1st parent. |
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550 p2 revision |
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551 Revision number of 2nd parent. -1 if no 1st parent. |
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552 node |
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553 Binary node value for this revision number. |
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554 |
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555 Negative values should index off the end of the sequence. ``-1`` |
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556 should return the null revision. ``-2`` should return the most |
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557 recent revision. |
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558 """ |
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559 |
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560 def __contains__(rev): |
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561 """Whether a revision number exists.""" |
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562 |
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563 def insert(self, i, entry): |
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564 """Add an item to the index at specific revision.""" |
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565 |
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566 |
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567 class ifileindex(interfaceutil.Interface): |
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568 """Storage interface for index data of a single file. |
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569 |
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570 File storage data is divided into index metadata and data storage. |
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571 This interface defines the index portion of the interface. |
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572 |
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573 The index logically consists of: |
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574 |
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575 * A mapping between revision numbers and nodes. |
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576 * DAG data (storing and querying the relationship between nodes). |
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577 * Metadata to facilitate storage. |
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578 """ |
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579 |
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580 nullid = interfaceutil.Attribute( |
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581 """node for the null revision for use as delta base.""" |
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582 ) |
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583 |
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584 def __len__(): |
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585 """Obtain the number of revisions stored for this file.""" |
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586 |
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587 def __iter__(): |
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588 """Iterate over revision numbers for this file.""" |
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589 |
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590 def hasnode(node): |
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591 """Returns a bool indicating if a node is known to this store. |
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592 |
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593 Implementations must only return True for full, binary node values: |
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594 hex nodes, revision numbers, and partial node matches must be |
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595 rejected. |
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596 |
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597 The null node is never present. |
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598 """ |
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599 |
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600 def revs(start=0, stop=None): |
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601 """Iterate over revision numbers for this file, with control.""" |
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602 |
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603 def parents(node): |
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604 """Returns a 2-tuple of parent nodes for a revision. |
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605 |
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606 Values will be ``nullid`` if the parent is empty. |
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607 """ |
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608 |
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609 def parentrevs(rev): |
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610 """Like parents() but operates on revision numbers.""" |
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611 |
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612 def rev(node): |
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613 """Obtain the revision number given a node. |
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614 |
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615 Raises ``error.LookupError`` if the node is not known. |
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616 """ |
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617 |
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618 def node(rev): |
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619 """Obtain the node value given a revision number. |
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620 |
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621 Raises ``IndexError`` if the node is not known. |
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622 """ |
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623 |
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624 def lookup(node): |
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625 """Attempt to resolve a value to a node. |
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626 |
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627 Value can be a binary node, hex node, revision number, or a string |
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628 that can be converted to an integer. |
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629 |
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630 Raises ``error.LookupError`` if a node could not be resolved. |
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631 """ |
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632 |
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633 def linkrev(rev): |
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634 """Obtain the changeset revision number a revision is linked to.""" |
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635 |
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636 def iscensored(rev): |
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637 """Return whether a revision's content has been censored.""" |
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638 |
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639 def commonancestorsheads(node1, node2): |
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640 """Obtain an iterable of nodes containing heads of common ancestors. |
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641 |
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642 See ``ancestor.commonancestorsheads()``. |
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643 """ |
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644 |
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645 def descendants(revs): |
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646 """Obtain descendant revision numbers for a set of revision numbers. |
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647 |
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648 If ``nullrev`` is in the set, this is equivalent to ``revs()``. |
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649 """ |
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650 |
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651 def heads(start=None, stop=None): |
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652 """Obtain a list of nodes that are DAG heads, with control. |
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653 |
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654 The set of revisions examined can be limited by specifying |
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655 ``start`` and ``stop``. ``start`` is a node. ``stop`` is an |
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656 iterable of nodes. DAG traversal starts at earlier revision |
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657 ``start`` and iterates forward until any node in ``stop`` is |
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658 encountered. |
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659 """ |
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660 |
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661 def children(node): |
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662 """Obtain nodes that are children of a node. |
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663 |
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664 Returns a list of nodes. |
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665 """ |
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666 |
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667 |
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668 class ifiledata(interfaceutil.Interface): |
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669 """Storage interface for data storage of a specific file. |
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670 |
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671 This complements ``ifileindex`` and provides an interface for accessing |
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672 data for a tracked file. |
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673 """ |
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674 |
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675 def size(rev): |
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676 """Obtain the fulltext size of file data. |
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677 |
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678 Any metadata is excluded from size measurements. |
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679 """ |
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680 |
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681 def revision(node, raw=False): |
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682 """Obtain fulltext data for a node. |
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683 |
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684 By default, any storage transformations are applied before the data |
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685 is returned. If ``raw`` is True, non-raw storage transformations |
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686 are not applied. |
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687 |
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688 The fulltext data may contain a header containing metadata. Most |
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689 consumers should use ``read()`` to obtain the actual file data. |
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690 """ |
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691 |
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692 def rawdata(node): |
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693 """Obtain raw data for a node.""" |
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694 |
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695 def read(node): |
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696 """Resolve file fulltext data. |
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697 |
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698 This is similar to ``revision()`` except any metadata in the data |
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699 headers is stripped. |
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700 """ |
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701 |
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702 def renamed(node): |
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703 """Obtain copy metadata for a node. |
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704 |
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705 Returns ``False`` if no copy metadata is stored or a 2-tuple of |
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706 (path, node) from which this revision was copied. |
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707 """ |
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708 |
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709 def cmp(node, fulltext): |
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710 """Compare fulltext to another revision. |
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711 |
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712 Returns True if the fulltext is different from what is stored. |
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713 |
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714 This takes copy metadata into account. |
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715 |
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716 TODO better document the copy metadata and censoring logic. |
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717 """ |
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718 |
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719 def emitrevisions( |
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720 nodes, |
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721 nodesorder=None, |
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722 revisiondata=False, |
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723 assumehaveparentrevisions=False, |
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724 deltamode=CG_DELTAMODE_STD, |
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725 ): |
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726 """Produce ``irevisiondelta`` for revisions. |
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727 |
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728 Given an iterable of nodes, emits objects conforming to the |
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729 ``irevisiondelta`` interface that describe revisions in storage. |
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730 |
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731 This method is a generator. |
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732 |
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733 The input nodes may be unordered. Implementations must ensure that a |
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734 node's parents are emitted before the node itself. Transitively, this |
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735 means that a node may only be emitted once all its ancestors in |
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736 ``nodes`` have also been emitted. |
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737 |
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738 By default, emits "index" data (the ``node``, ``p1node``, and |
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739 ``p2node`` attributes). If ``revisiondata`` is set, revision data |
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740 will also be present on the emitted objects. |
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741 |
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742 With default argument values, implementations can choose to emit |
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743 either fulltext revision data or a delta. When emitting deltas, |
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744 implementations must consider whether the delta's base revision |
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745 fulltext is available to the receiver. |
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746 |
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747 The base revision fulltext is guaranteed to be available if any of |
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748 the following are met: |
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749 |
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750 * Its fulltext revision was emitted by this method call. |
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751 * A delta for that revision was emitted by this method call. |
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752 * ``assumehaveparentrevisions`` is True and the base revision is a |
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753 parent of the node. |
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754 |
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755 ``nodesorder`` can be used to control the order that revisions are |
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756 emitted. By default, revisions can be reordered as long as they are |
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757 in DAG topological order (see above). If the value is ``nodes``, |
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758 the iteration order from ``nodes`` should be used. If the value is |
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759 ``storage``, then the native order from the backing storage layer |
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760 is used. (Not all storage layers will have strong ordering and behavior |
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761 of this mode is storage-dependent.) ``nodes`` ordering can force |
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762 revisions to be emitted before their ancestors, so consumers should |
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763 use it with care. |
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764 |
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765 The ``linknode`` attribute on the returned ``irevisiondelta`` may not |
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766 be set and it is the caller's responsibility to resolve it, if needed. |
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767 |
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768 If ``deltamode`` is CG_DELTAMODE_PREV and revision data is requested, |
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769 all revision data should be emitted as deltas against the revision |
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770 emitted just prior. The initial revision should be a delta against its |
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771 1st parent. |
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772 """ |
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773 |
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774 |
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775 class ifilemutation(interfaceutil.Interface): |
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776 """Storage interface for mutation events of a tracked file.""" |
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777 |
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778 def add(filedata, meta, transaction, linkrev, p1, p2): |
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779 """Add a new revision to the store. |
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780 |
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781 Takes file data, dictionary of metadata, a transaction, linkrev, |
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782 and parent nodes. |
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783 |
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784 Returns the node that was added. |
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785 |
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786 May no-op if a revision matching the supplied data is already stored. |
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787 """ |
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788 |
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789 def addrevision( |
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790 revisiondata, |
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791 transaction, |
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792 linkrev, |
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793 p1, |
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794 p2, |
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795 node=None, |
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796 flags=0, |
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797 cachedelta=None, |
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798 ): |
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799 """Add a new revision to the store and return its number. |
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800 |
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801 This is similar to ``add()`` except it operates at a lower level. |
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802 |
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803 The data passed in already contains a metadata header, if any. |
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804 |
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805 ``node`` and ``flags`` can be used to define the expected node and |
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806 the flags to use with storage. ``flags`` is a bitwise value composed |
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807 of the various ``REVISION_FLAG_*`` constants. |
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808 |
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809 ``add()`` is usually called when adding files from e.g. the working |
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810 directory. ``addrevision()`` is often called by ``add()`` and for |
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811 scenarios where revision data has already been computed, such as when |
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812 applying raw data from a peer repo. |
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813 """ |
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814 |
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815 def addgroup( |
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816 deltas, |
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817 linkmapper, |
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818 transaction, |
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819 addrevisioncb=None, |
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820 duplicaterevisioncb=None, |
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821 maybemissingparents=False, |
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822 ): |
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823 """Process a series of deltas for storage. |
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824 |
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825 ``deltas`` is an iterable of 7-tuples of |
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826 (node, p1, p2, linknode, deltabase, delta, flags) defining revisions |
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827 to add. |
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828 |
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829 The ``delta`` field contains ``mpatch`` data to apply to a base |
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830 revision, identified by ``deltabase``. The base node can be |
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831 ``nullid``, in which case the header from the delta can be ignored |
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832 and the delta used as the fulltext. |
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833 |
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834 ``alwayscache`` instructs the lower layers to cache the content of the |
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835 newly added revision, even if it needs to be explicitly computed. |
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836 This used to be the default when ``addrevisioncb`` was provided up to |
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837 Mercurial 5.8. |
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838 |
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839 ``addrevisioncb`` should be called for each new rev as it is committed. |
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840 ``duplicaterevisioncb`` should be called for all revs with a |
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841 pre-existing node. |
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842 |
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843 ``maybemissingparents`` is a bool indicating whether the incoming |
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844 data may reference parents/ancestor revisions that aren't present. |
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845 This flag is set when receiving data into a "shallow" store that |
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846 doesn't hold all history. |
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847 |
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848 Returns a list of nodes that were processed. A node will be in the list |
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849 even if it existed in the store previously. |
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850 """ |
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851 |
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852 def censorrevision(tr, node, tombstone=b''): |
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853 """Remove the content of a single revision. |
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854 |
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855 The specified ``node`` will have its content purged from storage. |
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856 Future attempts to access the revision data for this node will |
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857 result in failure. |
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858 |
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859 A ``tombstone`` message can optionally be stored. This message may be |
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860 displayed to users when they attempt to access the missing revision |
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861 data. |
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862 |
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863 Storage backends may have stored deltas against the previous content |
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864 in this revision. As part of censoring a revision, these storage |
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865 backends are expected to rewrite any internally stored deltas such |
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866 that they no longer reference the deleted content. |
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867 """ |
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868 |
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869 def getstrippoint(minlink): |
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870 """Find the minimum revision that must be stripped to strip a linkrev. |
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871 |
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872 Returns a 2-tuple containing the minimum revision number and a set |
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873 of all revisions numbers that would be broken by this strip. |
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874 |
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875 TODO this is highly revlog centric and should be abstracted into |
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876 a higher-level deletion API. ``repair.strip()`` relies on this. |
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877 """ |
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878 |
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879 def strip(minlink, transaction): |
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880 """Remove storage of items starting at a linkrev. |
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881 |
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882 This uses ``getstrippoint()`` to determine the first node to remove. |
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883 Then it effectively truncates storage for all revisions after that. |
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884 |
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885 TODO this is highly revlog centric and should be abstracted into a |
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886 higher-level deletion API. |
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887 """ |
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888 |
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889 |
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890 class ifilestorage(ifileindex, ifiledata, ifilemutation): |
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891 """Complete storage interface for a single tracked file.""" |
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892 |
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893 def files(): |
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894 """Obtain paths that are backing storage for this file. |
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895 |
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896 TODO this is used heavily by verify code and there should probably |
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897 be a better API for that. |
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898 """ |
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899 |
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900 def storageinfo( |
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901 exclusivefiles=False, |
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902 sharedfiles=False, |
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903 revisionscount=False, |
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904 trackedsize=False, |
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905 storedsize=False, |
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906 ): |
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|
907 """Obtain information about storage for this file's data. |
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908 |
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909 Returns a dict describing storage for this tracked path. The keys |
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|
910 in the dict map to arguments of the same. The arguments are bools |
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911 indicating whether to calculate and obtain that data. |
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912 |
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913 exclusivefiles |
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|
914 Iterable of (vfs, path) describing files that are exclusively |
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915 used to back storage for this tracked path. |
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|
916 |
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|
917 sharedfiles |
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|
918 Iterable of (vfs, path) describing files that are used to back |
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919 storage for this tracked path. Those files may also provide storage |
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920 for other stored entities. |
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921 |
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922 revisionscount |
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923 Number of revisions available for retrieval. |
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924 |
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925 trackedsize |
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926 Total size in bytes of all tracked revisions. This is a sum of the |
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927 length of the fulltext of all revisions. |
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928 |
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929 storedsize |
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930 Total size in bytes used to store data for all tracked revisions. |
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931 This is commonly less than ``trackedsize`` due to internal usage |
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932 of deltas rather than fulltext revisions. |
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|
933 |
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934 Not all storage backends may support all queries are have a reasonable |
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935 value to use. In that case, the value should be set to ``None`` and |
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936 callers are expected to handle this special value. |
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937 """ |
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938 |
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939 def verifyintegrity(state): |
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940 """Verifies the integrity of file storage. |
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|
941 |
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942 ``state`` is a dict holding state of the verifier process. It can be |
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943 used to communicate data between invocations of multiple storage |
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944 primitives. |
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945 |
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946 If individual revisions cannot have their revision content resolved, |
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947 the method is expected to set the ``skipread`` key to a set of nodes |
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948 that encountered problems. If set, the method can also add the node(s) |
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|
949 to ``safe_renamed`` in order to indicate nodes that may perform the |
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|
950 rename checks with currently accessible data. |
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951 |
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|
952 The method yields objects conforming to the ``iverifyproblem`` |
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|
953 interface. |
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|
954 """ |
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955 |
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956 |
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957 class idirs(interfaceutil.Interface): |
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958 """Interface representing a collection of directories from paths. |
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959 |
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960 This interface is essentially a derived data structure representing |
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961 directories from a collection of paths. |
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962 """ |
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|
963 |
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|
964 def addpath(path): |
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965 """Add a path to the collection. |
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966 |
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967 All directories in the path will be added to the collection. |
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968 """ |
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969 |
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970 def delpath(path): |
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971 """Remove a path from the collection. |
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972 |
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973 If the removal was the last path in a particular directory, the |
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974 directory is removed from the collection. |
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975 """ |
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976 |
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977 def __iter__(): |
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978 """Iterate over the directories in this collection of paths.""" |
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979 |
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980 def __contains__(path): |
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981 """Whether a specific directory is in this collection.""" |
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982 |
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983 |
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984 class imanifestdict(interfaceutil.Interface): |
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985 """Interface representing a manifest data structure. |
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986 |
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987 A manifest is effectively a dict mapping paths to entries. Each entry |
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988 consists of a binary node and extra flags affecting that entry. |
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989 """ |
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990 |
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991 def __getitem__(path): |
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992 """Returns the binary node value for a path in the manifest. |
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993 |
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994 Raises ``KeyError`` if the path does not exist in the manifest. |
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995 |
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996 Equivalent to ``self.find(path)[0]``. |
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997 """ |
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998 |
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999 def find(path): |
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1000 """Returns the entry for a path in the manifest. |
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1001 |
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1002 Returns a 2-tuple of (node, flags). |
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1003 |
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1004 Raises ``KeyError`` if the path does not exist in the manifest. |
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1005 """ |
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1006 |
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1007 def __len__(): |
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1008 """Return the number of entries in the manifest.""" |
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1009 |
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1010 def __nonzero__(): |
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1011 """Returns True if the manifest has entries, False otherwise.""" |
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1012 |
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1013 __bool__ = __nonzero__ |
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1014 |
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1015 def __setitem__(path, node): |
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1016 """Define the node value for a path in the manifest. |
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1017 |
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1018 If the path is already in the manifest, its flags will be copied to |
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1019 the new entry. |
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1020 """ |
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1021 |
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1022 def __contains__(path): |
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1023 """Whether a path exists in the manifest.""" |
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1024 |
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1025 def __delitem__(path): |
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1026 """Remove a path from the manifest. |
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1027 |
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1028 Raises ``KeyError`` if the path is not in the manifest. |
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1029 """ |
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1030 |
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1031 def __iter__(): |
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1032 """Iterate over paths in the manifest.""" |
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1033 |
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1034 def iterkeys(): |
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1035 """Iterate over paths in the manifest.""" |
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1036 |
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1037 def keys(): |
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1038 """Obtain a list of paths in the manifest.""" |
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1039 |
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1040 def filesnotin(other, match=None): |
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1041 """Obtain the set of paths in this manifest but not in another. |
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1042 |
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1043 ``match`` is an optional matcher function to be applied to both |
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1044 manifests. |
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1045 |
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1046 Returns a set of paths. |
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1047 """ |
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1048 |
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1049 def dirs(): |
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1050 """Returns an object implementing the ``idirs`` interface.""" |
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1051 |
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1052 def hasdir(dir): |
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1053 """Returns a bool indicating if a directory is in this manifest.""" |
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1054 |
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1055 def walk(match): |
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1056 """Generator of paths in manifest satisfying a matcher. |
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1057 |
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1058 If the matcher has explicit files listed and they don't exist in |
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1059 the manifest, ``match.bad()`` is called for each missing file. |
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1060 """ |
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1061 |
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1062 def diff(other, match=None, clean=False): |
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1063 """Find differences between this manifest and another. |
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1064 |
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1065 This manifest is compared to ``other``. |
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1066 |
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1067 If ``match`` is provided, the two manifests are filtered against this |
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1068 matcher and only entries satisfying the matcher are compared. |
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1069 |
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1070 If ``clean`` is True, unchanged files are included in the returned |
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1071 object. |
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1072 |
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1073 Returns a dict with paths as keys and values of 2-tuples of 2-tuples of |
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1074 the form ``((node1, flag1), (node2, flag2))`` where ``(node1, flag1)`` |
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1075 represents the node and flags for this manifest and ``(node2, flag2)`` |
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1076 are the same for the other manifest. |
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1077 """ |
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1078 |
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1079 def setflag(path, flag): |
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1080 """Set the flag value for a given path. |
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1081 |
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1082 Raises ``KeyError`` if the path is not already in the manifest. |
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1083 """ |
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1084 |
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1085 def get(path, default=None): |
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1086 """Obtain the node value for a path or a default value if missing.""" |
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1087 |
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1088 def flags(path): |
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1089 """Return the flags value for a path (default: empty bytestring).""" |
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1090 |
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1091 def copy(): |
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1092 """Return a copy of this manifest.""" |
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1093 |
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1094 def items(): |
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1095 """Returns an iterable of (path, node) for items in this manifest.""" |
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1096 |
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1097 def iteritems(): |
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1098 """Identical to items().""" |
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1099 |
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1100 def iterentries(): |
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1101 """Returns an iterable of (path, node, flags) for this manifest. |
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1102 |
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1103 Similar to ``iteritems()`` except items are a 3-tuple and include |
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1104 flags. |
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1105 """ |
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1106 |
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1107 def text(): |
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1108 """Obtain the raw data representation for this manifest. |
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1109 |
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1110 Result is used to create a manifest revision. |
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1111 """ |
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1112 |
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1113 def fastdelta(base, changes): |
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1114 """Obtain a delta between this manifest and another given changes. |
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1115 |
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1116 ``base`` in the raw data representation for another manifest. |
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1117 |
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1118 ``changes`` is an iterable of ``(path, to_delete)``. |
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1119 |
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1120 Returns a 2-tuple containing ``bytearray(self.text())`` and the |
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1121 delta between ``base`` and this manifest. |
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1122 |
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1123 If this manifest implementation can't support ``fastdelta()``, |
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1124 raise ``mercurial.manifest.FastdeltaUnavailable``. |
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1125 """ |
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1126 |
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1127 |
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1128 class imanifestrevisionbase(interfaceutil.Interface): |
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1129 """Base interface representing a single revision of a manifest. |
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1130 |
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1131 Should not be used as a primary interface: should always be inherited |
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1132 as part of a larger interface. |
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1133 """ |
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1134 |
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1135 def copy(): |
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1136 """Obtain a copy of this manifest instance. |
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1137 |
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1138 Returns an object conforming to the ``imanifestrevisionwritable`` |
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1139 interface. The instance will be associated with the same |
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1140 ``imanifestlog`` collection as this instance. |
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1141 """ |
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1142 |
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1143 def read(): |
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1144 """Obtain the parsed manifest data structure. |
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1145 |
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1146 The returned object conforms to the ``imanifestdict`` interface. |
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1147 """ |
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1148 |
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1149 |
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1150 class imanifestrevisionstored(imanifestrevisionbase): |
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1151 """Interface representing a manifest revision committed to storage.""" |
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1152 |
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1153 def node(): |
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1154 """The binary node for this manifest.""" |
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1155 |
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1156 parents = interfaceutil.Attribute( |
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1157 """List of binary nodes that are parents for this manifest revision.""" |
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1158 ) |
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1159 |
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1160 def readdelta(shallow=False): |
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1161 """Obtain the manifest data structure representing changes from parent. |
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1162 |
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1163 This manifest is compared to its 1st parent. A new manifest representing |
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1164 those differences is constructed. |
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1165 |
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1166 The returned object conforms to the ``imanifestdict`` interface. |
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1167 """ |
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1168 |
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1169 def readfast(shallow=False): |
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1170 """Calls either ``read()`` or ``readdelta()``. |
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1171 |
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1172 The faster of the two options is called. |
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1173 """ |
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1174 |
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1175 def find(key): |
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1176 """Calls self.read().find(key)``. |
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1177 |
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1178 Returns a 2-tuple of ``(node, flags)`` or raises ``KeyError``. |
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1179 """ |
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1180 |
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1181 |
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1182 class imanifestrevisionwritable(imanifestrevisionbase): |
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1183 """Interface representing a manifest revision that can be committed.""" |
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1184 |
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1185 def write(transaction, linkrev, p1node, p2node, added, removed, match=None): |
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1186 """Add this revision to storage. |
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1187 |
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1188 Takes a transaction object, the changeset revision number it will |
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1189 be associated with, its parent nodes, and lists of added and |
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1190 removed paths. |
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1191 |
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1192 If match is provided, storage can choose not to inspect or write out |
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1193 items that do not match. Storage is still required to be able to provide |
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1194 the full manifest in the future for any directories written (these |
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1195 manifests should not be "narrowed on disk"). |
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1196 |
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1197 Returns the binary node of the created revision. |
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1198 """ |
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1199 |
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1200 |
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1201 class imanifeststorage(interfaceutil.Interface): |
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1202 """Storage interface for manifest data.""" |
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1203 |
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1204 nodeconstants = interfaceutil.Attribute( |
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1205 """nodeconstants used by the current repository.""" |
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1206 ) |
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1207 |
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1208 tree = interfaceutil.Attribute( |
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1209 """The path to the directory this manifest tracks. |
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1210 |
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1211 The empty bytestring represents the root manifest. |
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1212 """ |
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1213 ) |
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1214 |
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1215 index = interfaceutil.Attribute( |
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1216 """An ``ifilerevisionssequence`` instance.""" |
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1217 ) |
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1218 |
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1219 opener = interfaceutil.Attribute( |
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1220 """VFS opener to use to access underlying files used for storage. |
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1221 |
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1222 TODO this is revlog specific and should not be exposed. |
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1223 """ |
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1224 ) |
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1225 |
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1226 _generaldelta = interfaceutil.Attribute( |
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1227 """Whether generaldelta storage is being used. |
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diff
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|
1228 |
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|
1229 TODO this is revlog specific and should not be exposed. |
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|
1230 """ |
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|
1231 ) |
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|
1232 |
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|
1233 fulltextcache = interfaceutil.Attribute( |
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diff
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|
1234 """Dict with cache of fulltexts. |
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diff
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|
1235 |
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|
1236 TODO this doesn't feel appropriate for the storage interface. |
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|
1237 """ |
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|
1238 ) |
39314
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|
1239 |
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|
1240 def __len__(): |
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|
1241 """Obtain the number of revisions stored for this manifest.""" |
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|
1242 |
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|
1243 def __iter__(): |
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parents:
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diff
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|
1244 """Iterate over revision numbers for this manifest.""" |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
1245 |
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|
1246 def rev(node): |
7f5e6d3e9032
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parents:
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diff
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|
1247 """Obtain the revision number given a binary node. |
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|
1248 |
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|
1249 Raises ``error.LookupError`` if the node is not known. |
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|
1250 """ |
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|
1251 |
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|
1252 def node(rev): |
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|
1253 """Obtain the node value given a revision number. |
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|
1254 |
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|
1255 Raises ``error.LookupError`` if the revision is not known. |
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|
1256 """ |
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|
1257 |
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|
1258 def lookup(value): |
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|
1259 """Attempt to resolve a value to a node. |
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|
1260 |
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|
1261 Value can be a binary node, hex node, revision number, or a bytes |
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|
1262 that can be converted to an integer. |
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|
1263 |
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|
1264 Raises ``error.LookupError`` if a ndoe could not be resolved. |
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|
1265 """ |
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|
1266 |
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|
1267 def parents(node): |
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|
1268 """Returns a 2-tuple of parent nodes for a node. |
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|
1269 |
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|
1270 Values will be ``nullid`` if the parent is empty. |
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|
1271 """ |
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|
1272 |
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|
1273 def parentrevs(rev): |
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|
1274 """Like parents() but operates on revision numbers.""" |
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|
1275 |
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|
1276 def linkrev(rev): |
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|
1277 """Obtain the changeset revision number a revision is linked to.""" |
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|
1278 |
48529
c514936d92b4
revlog: remove deprecated APIs
Raphaël Gomès <rgomes@octobus.net>
parents:
47299
diff
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|
1279 def revision(node, _df=None): |
39314
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|
1280 """Obtain fulltext data for a node.""" |
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|
1281 |
42723
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Pierre-Yves David <pierre-yves.david@octobus.net>
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diff
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|
1282 def rawdata(node, _df=None): |
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Pierre-Yves David <pierre-yves.david@octobus.net>
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diff
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|
1283 """Obtain raw data for a node.""" |
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parents:
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|
1284 |
39314
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|
1285 def revdiff(rev1, rev2): |
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|
1286 """Obtain a delta between two revision numbers. |
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|
1287 |
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|
1288 The returned data is the result of ``bdiff.bdiff()`` on the raw |
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|
1289 revision data. |
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|
1290 """ |
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|
1291 |
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|
1292 def cmp(node, fulltext): |
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|
1293 """Compare fulltext to another revision. |
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|
1294 |
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|
1295 Returns True if the fulltext is different from what is stored. |
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|
1296 """ |
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|
1297 |
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|
1298 def emitrevisions( |
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|
1299 nodes, |
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|
1300 nodesorder=None, |
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|
1301 revisiondata=False, |
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|
1302 assumehaveparentrevisions=False, |
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|
1303 ): |
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39860
diff
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|
1304 """Produce ``irevisiondelta`` describing revisions. |
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|
1305 |
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diff
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|
1306 See the documentation for ``ifiledata`` for more. |
5a9ab91e0a45
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diff
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|
1307 """ |
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|
1308 |
45788
a5206e71c536
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parents:
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diff
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|
1309 def addgroup( |
a5206e71c536
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diff
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|
1310 deltas, |
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diff
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|
1311 linkmapper, |
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diff
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|
1312 transaction, |
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diff
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|
1313 addrevisioncb=None, |
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|
1314 duplicaterevisioncb=None, |
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|
1315 ): |
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|
1316 """Process a series of deltas for storage. |
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1317 |
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|
1318 See the documentation in ``ifilemutation`` for more. |
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|
1319 """ |
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1320 |
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|
1321 def rawsize(rev): |
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|
1322 """Obtain the size of tracked data. |
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|
1323 |
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|
1324 Is equivalent to ``len(m.rawdata(node))``. |
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|
1325 |
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|
1326 TODO this method is only used by upgrade code and may be removed. |
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1327 """ |
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1328 |
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|
1329 def getstrippoint(minlink): |
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|
1330 """Find minimum revision that must be stripped to strip a linkrev. |
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1331 |
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|
1332 See the documentation in ``ifilemutation`` for more. |
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|
1333 """ |
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1334 |
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|
1335 def strip(minlink, transaction): |
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|
1336 """Remove storage of items starting at a linkrev. |
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1337 |
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|
1338 See the documentation in ``ifilemutation`` for more. |
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|
1339 """ |
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|
1340 |
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|
1341 def checksize(): |
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|
1342 """Obtain the expected sizes of backing files. |
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1343 |
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|
1344 TODO this is used by verify and it should not be part of the interface. |
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|
1345 """ |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1346 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1347 def files(): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
changeset
|
1348 """Obtain paths that are backing storage for this manifest. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1349 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1350 TODO this is used by verify and there should probably be a better API |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1351 for this functionality. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1352 """ |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1353 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1354 def deltaparent(rev): |
7f5e6d3e9032
manifest: proxy to revlog instance instead of inheriting
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1355 """Obtain the revision that a revision is delta'd against. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1356 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1357 TODO delta encoding is an implementation detail of storage and should |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1358 not be exposed to the storage interface. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1359 """ |
7f5e6d3e9032
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diff
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|
1360 |
7f5e6d3e9032
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diff
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|
1361 def clone(tr, dest, **kwargs): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1362 """Clone this instance to another.""" |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1363 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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39244
diff
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|
1364 def clearcaches(clear_persisted_data=False): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1365 """Clear any caches associated with this instance.""" |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1366 |
7f5e6d3e9032
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|
1367 def dirlog(d): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
1368 """Obtain a manifest storage instance for a tree.""" |
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|
1369 |
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|
1370 def add( |
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|
1371 m, transaction, link, p1, p2, added, removed, readtree=None, match=None |
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parents:
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diff
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|
1372 ): |
39314
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|
1373 """Add a revision to storage. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
1374 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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|
1375 ``m`` is an object conforming to ``imanifestdict``. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1376 |
7f5e6d3e9032
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diff
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|
1377 ``link`` is the linkrev revision number. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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39244
diff
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|
1378 |
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diff
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|
1379 ``p1`` and ``p2`` are the parent revision numbers. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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|
1380 |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1381 ``added`` and ``removed`` are iterables of added and removed paths, |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1382 respectively. |
39668
24870f1be088
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parents:
39315
diff
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|
1383 |
24870f1be088
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spectral <spectral@google.com>
parents:
39315
diff
changeset
|
1384 ``readtree`` is a function that can be used to read the child tree(s) |
24870f1be088
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spectral <spectral@google.com>
parents:
39315
diff
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|
1385 when recursively writing the full tree structure when using |
24870f1be088
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spectral <spectral@google.com>
parents:
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diff
changeset
|
1386 treemanifets. |
24870f1be088
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39315
diff
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|
1387 |
24870f1be088
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parents:
39315
diff
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|
1388 ``match`` is a matcher that can be used to hint to storage that not all |
24870f1be088
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spectral <spectral@google.com>
parents:
39315
diff
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|
1389 paths must be inspected; this is an optimization and can be safely |
24870f1be088
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spectral <spectral@google.com>
parents:
39315
diff
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|
1390 ignored. Note that the storage must still be able to reproduce a full |
24870f1be088
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spectral <spectral@google.com>
parents:
39315
diff
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|
1391 manifest including files that did not match. |
39314
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1392 """ |
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|
1393 |
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|
1394 def storageinfo( |
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diff
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|
1395 exclusivefiles=False, |
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diff
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|
1396 sharedfiles=False, |
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|
1397 revisionscount=False, |
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|
1398 trackedsize=False, |
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|
1399 storedsize=False, |
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|
1400 ): |
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14e500b58263
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39867
diff
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|
1401 """Obtain information about storage for this manifest's data. |
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|
1402 |
14e500b58263
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1403 See ``ifilestorage.storageinfo()`` for a description of this method. |
14e500b58263
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39867
diff
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|
1404 This one behaves the same way, except for manifest data. |
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|
1405 """ |
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|
1406 |
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|
1407 |
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|
1408 class imanifestlog(interfaceutil.Interface): |
39240
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39235
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|
1409 """Interface representing a collection of manifest snapshots. |
2af6b2d8d1d8
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|
1410 |
2af6b2d8d1d8
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diff
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|
1411 Represents the root manifest in a repository. |
2af6b2d8d1d8
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39235
diff
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|
1412 |
2af6b2d8d1d8
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39235
diff
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|
1413 Also serves as a means to access nested tree manifests and to cache |
2af6b2d8d1d8
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Gregory Szorc <gregory.szorc@gmail.com>
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39235
diff
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|
1414 tree manifests. |
2af6b2d8d1d8
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Gregory Szorc <gregory.szorc@gmail.com>
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39235
diff
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|
1415 """ |
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|
1416 |
46780
6266d19556ad
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Joerg Sonnenberger <joerg@bec.de>
parents:
46713
diff
changeset
|
1417 nodeconstants = interfaceutil.Attribute( |
6266d19556ad
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Joerg Sonnenberger <joerg@bec.de>
parents:
46713
diff
changeset
|
1418 """nodeconstants used by the current repository.""" |
6266d19556ad
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Joerg Sonnenberger <joerg@bec.de>
parents:
46713
diff
changeset
|
1419 ) |
6266d19556ad
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Joerg Sonnenberger <joerg@bec.de>
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46713
diff
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|
1420 |
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diff
changeset
|
1421 def __getitem__(node): |
c82ea938efbb
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38509
diff
changeset
|
1422 """Obtain a manifest instance for a given binary node. |
c82ea938efbb
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diff
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|
1423 |
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diff
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|
1424 Equivalent to calling ``self.get('', node)``. |
c82ea938efbb
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diff
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|
1425 |
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diff
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|
1426 The returned object conforms to the ``imanifestrevisionstored`` |
c82ea938efbb
repository: define manifest interfaces
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parents:
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diff
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|
1427 interface. |
c82ea938efbb
repository: define manifest interfaces
Gregory Szorc <gregory.szorc@gmail.com>
parents:
38509
diff
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|
1428 """ |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1429 |
39235
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1430 def get(tree, node, verify=True): |
38530
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diff
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|
1431 """Retrieve the manifest instance for a given directory and binary node. |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1432 |
c82ea938efbb
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diff
changeset
|
1433 ``node`` always refers to the node of the root manifest (which will be |
c82ea938efbb
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diff
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|
1434 the only manifest if flat manifests are being used). |
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|
1435 |
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|
1436 If ``tree`` is the empty string, the root manifest is returned. |
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|
1437 Otherwise the manifest for the specified directory will be returned |
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diff
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|
1438 (requires tree manifests). |
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|
1439 |
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diff
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|
1440 If ``verify`` is True, ``LookupError`` is raised if the node is not |
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diff
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|
1441 known. |
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diff
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|
1442 |
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diff
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|
1443 The returned object conforms to the ``imanifestrevisionstored`` |
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diff
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|
1444 interface. |
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38509
diff
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|
1445 """ |
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diff
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|
1446 |
39244
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diff
changeset
|
1447 def getstorage(tree): |
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Gregory Szorc <gregory.szorc@gmail.com>
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39241
diff
changeset
|
1448 """Retrieve an interface to storage for a particular tree. |
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diff
changeset
|
1449 |
73cf21b2e8a6
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39241
diff
changeset
|
1450 If ``tree`` is the empty bytestring, storage for the root manifest will |
73cf21b2e8a6
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parents:
39241
diff
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|
1451 be returned. Otherwise storage for a tree manifest is returned. |
73cf21b2e8a6
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diff
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|
1452 |
73cf21b2e8a6
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parents:
39241
diff
changeset
|
1453 TODO formalize interface for returned object. |
73cf21b2e8a6
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39241
diff
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|
1454 """ |
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diff
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|
1455 |
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changeset
|
1456 def clearcaches(): |
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parents:
38509
diff
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|
1457 """Clear caches associated with this collection.""" |
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diff
changeset
|
1458 |
38555
f2f9bacf0587
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Gregory Szorc <gregory.szorc@gmail.com>
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38530
diff
changeset
|
1459 def rev(node): |
f2f9bacf0587
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Gregory Szorc <gregory.szorc@gmail.com>
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38530
diff
changeset
|
1460 """Obtain the revision number for a binary node. |
f2f9bacf0587
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
38530
diff
changeset
|
1461 |
f2f9bacf0587
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Gregory Szorc <gregory.szorc@gmail.com>
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38530
diff
changeset
|
1462 Raises ``error.LookupError`` if the node is not known. |
f2f9bacf0587
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parents:
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diff
changeset
|
1463 """ |
f2f9bacf0587
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
38530
diff
changeset
|
1464 |
44787
97ebdb192b00
nodemap: also warm manifest nodemap with other caches
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
44663
diff
changeset
|
1465 def update_caches(transaction): |
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1466 """update whatever cache are relevant for the used storage.""" |
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1467 |
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1468 |
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|
1469 class ilocalrepositoryfilestorage(interfaceutil.Interface): |
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|
1470 """Local repository sub-interface providing access to tracked file storage. |
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|
1471 |
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1472 This interface defines how a repository accesses storage for a single |
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|
1473 tracked file path. |
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|
1474 """ |
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1475 |
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|
1476 def file(f): |
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|
1477 """Obtain a filelog for a tracked path. |
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|
1478 |
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1479 The returned type conforms to the ``ifilestorage`` interface. |
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1480 """ |
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1481 |
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1482 |
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|
1483 class ilocalrepositorymain(interfaceutil.Interface): |
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1484 """Main interface for local repositories. |
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1485 |
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1486 This currently captures the reality of things - not how things should be. |
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1487 """ |
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|
1488 |
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|
1489 nodeconstants = interfaceutil.Attribute( |
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|
1490 """Constant nodes matching the hash function used by the repository.""" |
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|
1491 ) |
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|
1492 nullid = interfaceutil.Attribute( |
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|
1493 """null revision for the hash function used by the repository.""" |
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|
1494 ) |
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|
1495 |
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1496 supported = interfaceutil.Attribute( |
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1497 """Set of requirements that this repo is capable of opening.""" |
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1498 ) |
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1499 |
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1500 requirements = interfaceutil.Attribute( |
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1501 """Set of requirements this repo uses.""" |
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1502 ) |
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1503 |
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1504 features = interfaceutil.Attribute( |
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|
1505 """Set of "features" this repository supports. |
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|
1506 |
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|
1507 A "feature" is a loosely-defined term. It can refer to a feature |
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|
1508 in the classical sense or can describe an implementation detail |
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|
1509 of the repository. For example, a ``readonly`` feature may denote |
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|
1510 the repository as read-only. Or a ``revlogfilestore`` feature may |
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|
1511 denote that the repository is using revlogs for file storage. |
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|
1512 |
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|
1513 The intent of features is to provide a machine-queryable mechanism |
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|
1514 for repo consumers to test for various repository characteristics. |
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|
1515 |
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|
1516 Features are similar to ``requirements``. The main difference is that |
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|
1517 requirements are stored on-disk and represent requirements to open the |
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|
1518 repository. Features are more run-time capabilities of the repository |
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1519 and more granular capabilities (which may be derived from requirements). |
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1520 """ |
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1521 ) |
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|
1522 |
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1523 filtername = interfaceutil.Attribute( |
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1524 """Name of the repoview that is active on this repo.""" |
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1525 ) |
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|
1526 |
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1527 wvfs = interfaceutil.Attribute( |
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1528 """VFS used to access the working directory.""" |
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1529 ) |
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|
1530 |
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|
1531 vfs = interfaceutil.Attribute( |
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|
1532 """VFS rooted at the .hg directory. |
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|
1533 |
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|
1534 Used to access repository data not in the store. |
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|
1535 """ |
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|
1536 ) |
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|
1537 |
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|
1538 svfs = interfaceutil.Attribute( |
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|
1539 """VFS rooted at the store. |
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|
1540 |
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|
1541 Used to access repository data in the store. Typically .hg/store. |
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|
1542 But can point elsewhere if the store is shared. |
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|
1543 """ |
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|
1544 ) |
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|
1545 |
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|
1546 root = interfaceutil.Attribute( |
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|
1547 """Path to the root of the working directory.""" |
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|
1548 ) |
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|
1549 |
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|
1550 path = interfaceutil.Attribute("""Path to the .hg directory.""") |
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|
1551 |
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|
1552 origroot = interfaceutil.Attribute( |
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1553 """The filesystem path that was used to construct the repo.""" |
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|
1554 ) |
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|
1555 |
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|
1556 auditor = interfaceutil.Attribute( |
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|
1557 """A pathauditor for the working directory. |
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|
1558 |
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|
1559 This checks if a path refers to a nested repository. |
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|
1560 |
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|
1561 Operates on the filesystem. |
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1562 """ |
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1563 ) |
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|
1564 |
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|
1565 nofsauditor = interfaceutil.Attribute( |
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|
1566 """A pathauditor for the working directory. |
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|
1567 |
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|
1568 This is like ``auditor`` except it doesn't do filesystem checks. |
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1569 """ |
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1570 ) |
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|
1571 |
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1572 baseui = interfaceutil.Attribute( |
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1573 """Original ui instance passed into constructor.""" |
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|
1574 ) |
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|
1575 |
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1576 ui = interfaceutil.Attribute("""Main ui instance for this instance.""") |
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|
1577 |
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1578 sharedpath = interfaceutil.Attribute( |
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1579 """Path to the .hg directory of the repo this repo was shared from.""" |
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1580 ) |
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1581 |
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1582 store = interfaceutil.Attribute("""A store instance.""") |
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1583 |
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1584 spath = interfaceutil.Attribute("""Path to the store.""") |
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1585 |
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1586 sjoin = interfaceutil.Attribute("""Alias to self.store.join.""") |
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1587 |
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1588 cachevfs = interfaceutil.Attribute( |
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1589 """A VFS used to access the cache directory. |
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1590 |
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1591 Typically .hg/cache. |
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1592 """ |
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1593 ) |
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1594 |
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|
1595 wcachevfs = interfaceutil.Attribute( |
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|
1596 """A VFS used to access the cache directory dedicated to working copy |
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|
1597 |
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|
1598 Typically .hg/wcache. |
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1599 """ |
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1600 ) |
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|
1601 |
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1602 filteredrevcache = interfaceutil.Attribute( |
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1603 """Holds sets of revisions to be filtered.""" |
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1604 ) |
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1605 |
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1606 names = interfaceutil.Attribute("""A ``namespaces`` instance.""") |
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1607 |
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|
1608 filecopiesmode = interfaceutil.Attribute( |
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|
1609 """The way files copies should be dealt with in this repo.""" |
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1610 ) |
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1611 |
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1612 def close(): |
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1613 """Close the handle on this repository.""" |
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1614 |
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1615 def peer(path=None): |
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1616 """Obtain an object conforming to the ``peer`` interface.""" |
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1617 |
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1618 def unfiltered(): |
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1619 """Obtain an unfiltered/raw view of this repo.""" |
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1620 |
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1621 def filtered(name, visibilityexceptions=None): |
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1622 """Obtain a named view of this repository.""" |
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1623 |
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1624 obsstore = interfaceutil.Attribute("""A store of obsolescence data.""") |
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1625 |
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1626 changelog = interfaceutil.Attribute("""A handle on the changelog revlog.""") |
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1627 |
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|
1628 manifestlog = interfaceutil.Attribute( |
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|
1629 """An instance conforming to the ``imanifestlog`` interface. |
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|
1630 |
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1631 Provides access to manifests for the repository. |
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|
1632 """ |
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|
1633 ) |
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|
1634 |
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1635 dirstate = interfaceutil.Attribute("""Working directory state.""") |
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|
1636 |
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1637 narrowpats = interfaceutil.Attribute( |
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1638 """Matcher patterns for this repository's narrowspec.""" |
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1639 ) |
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|
1640 |
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|
1641 def narrowmatch(match=None, includeexact=False): |
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1642 """Obtain a matcher for the narrowspec.""" |
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|
1643 |
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1644 def setnarrowpats(newincludes, newexcludes): |
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|
1645 """Define the narrowspec for this repository.""" |
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|
1646 |
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|
1647 def __getitem__(changeid): |
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|
1648 """Try to resolve a changectx.""" |
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|
1649 |
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|
1650 def __contains__(changeid): |
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|
1651 """Whether a changeset exists.""" |
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|
1652 |
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|
1653 def __nonzero__(): |
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|
1654 """Always returns True.""" |
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|
1655 return True |
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|
1656 |
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|
1657 __bool__ = __nonzero__ |
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|
1658 |
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|
1659 def __len__(): |
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|
1660 """Returns the number of changesets in the repo.""" |
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|
1661 |
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|
1662 def __iter__(): |
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|
1663 """Iterate over revisions in the changelog.""" |
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|
1664 |
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|
1665 def revs(expr, *args): |
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|
1666 """Evaluate a revset. |
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|
1667 |
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|
1668 Emits revisions. |
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|
1669 """ |
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|
1670 |
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|
1671 def set(expr, *args): |
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|
1672 """Evaluate a revset. |
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|
1673 |
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|
1674 Emits changectx instances. |
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|
1675 """ |
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|
1676 |
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|
1677 def anyrevs(specs, user=False, localalias=None): |
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|
1678 """Find revisions matching one of the given revsets.""" |
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|
1679 |
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|
1680 def url(): |
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|
1681 """Returns a string representing the location of this repo.""" |
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|
1682 |
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|
1683 def hook(name, throw=False, **args): |
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|
1684 """Call a hook.""" |
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|
1685 |
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|
1686 def tags(): |
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|
1687 """Return a mapping of tag to node.""" |
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|
1688 |
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|
1689 def tagtype(tagname): |
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|
1690 """Return the type of a given tag.""" |
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|
1691 |
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|
1692 def tagslist(): |
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|
1693 """Return a list of tags ordered by revision.""" |
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|
1694 |
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|
1695 def nodetags(node): |
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|
1696 """Return the tags associated with a node.""" |
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|
1697 |
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|
1698 def nodebookmarks(node): |
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|
1699 """Return the list of bookmarks pointing to the specified node.""" |
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|
1700 |
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|
1701 def branchmap(): |
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|
1702 """Return a mapping of branch to heads in that branch.""" |
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|
1703 |
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|
1704 def revbranchcache(): |
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|
1705 pass |
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|
1706 |
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|
1707 def register_changeset(rev, changelogrevision): |
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|
1708 """Extension point for caches for new nodes. |
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|
1709 |
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|
1710 Multiple consumers are expected to need parts of the changelogrevision, |
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|
1711 so it is provided as optimization to avoid duplicate lookups. A simple |
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|
1712 cache would be fragile when other revisions are accessed, too.""" |
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changeset
|
1713 pass |
0903d6b9b1df
repository: introduce register_changeset callback
Joerg Sonnenberger <joerg@bec.de>
parents:
45946
diff
changeset
|
1714 |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1715 def branchtip(branchtip, ignoremissing=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1716 """Return the tip node for a given branch.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1717 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1718 def lookup(key): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1719 """Resolve the node for a revision.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1720 |
37351
fdd22bf6398f
localrepo: drop "remote" argument from lookupbranch() (API)
Martin von Zweigbergk <martinvonz@google.com>
parents:
37320
diff
changeset
|
1721 def lookupbranch(key): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1722 """Look up the branch name of the given revision or branch name.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1723 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1724 def known(nodes): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1725 """Determine whether a series of nodes is known. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1726 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1727 Returns a list of bools. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1728 """ |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1729 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1730 def local(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1731 """Whether the repository is local.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1732 return True |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1733 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1734 def publishing(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1735 """Whether the repository is a publishing repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1736 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1737 def cancopy(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1738 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1739 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1740 def shared(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1741 """The type of shared repository or None.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1742 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1743 def wjoin(f, *insidef): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1744 """Calls self.vfs.reljoin(self.root, f, *insidef)""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1745 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1746 def setparents(p1, p2): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1747 """Set the parent nodes of the working directory.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1748 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1749 def filectx(path, changeid=None, fileid=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1750 """Obtain a filectx for the given file revision.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1751 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1752 def getcwd(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1753 """Obtain the current working directory from the dirstate.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1754 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1755 def pathto(f, cwd=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1756 """Obtain the relative path to a file.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1757 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1758 def adddatafilter(name, fltr): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1759 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1760 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1761 def wread(filename): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1762 """Read a file from wvfs, using data filters.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1763 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1764 def wwrite(filename, data, flags, backgroundclose=False, **kwargs): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1765 """Write data to a file in the wvfs, using data filters.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1766 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1767 def wwritedata(filename, data): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1768 """Resolve data for writing to the wvfs, using data filters.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1769 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1770 def currenttransaction(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1771 """Obtain the current transaction instance or None.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1772 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1773 def transaction(desc, report=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1774 """Open a new transaction to write to the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1775 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1776 def undofiles(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1777 """Returns a list of (vfs, path) for files to undo transactions.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1778 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1779 def recover(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1780 """Roll back an interrupted transaction.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1781 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1782 def rollback(dryrun=False, force=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1783 """Undo the last transaction. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1784 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1785 DANGEROUS. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1786 """ |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1787 |
48696
bf3da4e02087
interfaces: add missing caches kwarg of localrepo.updatecaches()
Anton Shestakov <av6@dwimlabs.net>
parents:
48604
diff
changeset
|
1788 def updatecaches(tr=None, full=False, caches=None): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1789 """Warm repo caches.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1790 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1791 def invalidatecaches(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1792 """Invalidate cached data due to the repository mutating.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1793 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1794 def invalidatevolatilesets(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1795 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1796 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1797 def invalidatedirstate(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1798 """Invalidate the dirstate.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1799 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1800 def invalidate(clearfilecache=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1801 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1802 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1803 def invalidateall(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1804 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1805 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1806 def lock(wait=True): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1807 """Lock the repository store and return a lock instance.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1808 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1809 def wlock(wait=True): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1810 """Lock the non-store parts of the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1811 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1812 def currentwlock(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1813 """Return the wlock if it's held or None.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1814 |
43712
f965b1027fb0
commit: drop unused "vdirs" argument from repo.checkcommitpatterns()
Martin von Zweigbergk <martinvonz@google.com>
parents:
43142
diff
changeset
|
1815 def checkcommitpatterns(wctx, match, status, fail): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1816 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1817 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1818 def commit( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1819 text=b'', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1820 user=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1821 date=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1822 match=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1823 force=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1824 editor=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1825 extra=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1826 ): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1827 """Add a new revision to the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1828 |
42620
d98ec36be808
convert: add a config option to help doing identity hg->hg conversion
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents:
42158
diff
changeset
|
1829 def commitctx(ctx, error=False, origctx=None): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1830 """Commit a commitctx instance to the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1831 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1832 def destroying(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1833 """Inform the repository that nodes are about to be destroyed.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1834 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1835 def destroyed(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1836 """Inform the repository that nodes have been destroyed.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1837 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1838 def status( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1839 node1=b'.', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1840 node2=None, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1841 match=None, |
2372284d9457
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Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1842 ignored=False, |
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Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1843 clean=False, |
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parents:
43032
diff
changeset
|
1844 unknown=False, |
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Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1845 listsubrepos=False, |
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parents:
43032
diff
changeset
|
1846 ): |
37181
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1847 """Convenience method to call repo[x].status().""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1848 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1849 def addpostdsstatus(ps): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1850 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1851 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1852 def postdsstatus(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1853 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1854 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1855 def clearpostdsstatus(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1856 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1857 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1858 def heads(start=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1859 """Obtain list of nodes that are DAG heads.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1860 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1861 def branchheads(branch=None, start=None, closed=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1862 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1863 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1864 def branches(nodes): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1865 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1866 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1867 def between(pairs): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1868 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1869 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1870 def checkpush(pushop): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1871 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1872 |
43076
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|
1873 prepushoutgoinghooks = interfaceutil.Attribute("""util.hooks instance.""") |
37181
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1874 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1875 def pushkey(namespace, key, old, new): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1876 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1877 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1878 def listkeys(namespace): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1879 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1880 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1881 def debugwireargs(one, two, three=None, four=None, five=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1882 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1883 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1884 def savecommitmessage(text): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1885 pass |
39764
e4e881572382
localrepo: iteratively derive local repository type
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39700
diff
changeset
|
1886 |
47083
81eb7091c494
sidedata: add a way of replacing an existing sidedata computer
Raphaël Gomès <rgomes@octobus.net>
parents:
47078
diff
changeset
|
1887 def register_sidedata_computer( |
81eb7091c494
sidedata: add a way of replacing an existing sidedata computer
Raphaël Gomès <rgomes@octobus.net>
parents:
47078
diff
changeset
|
1888 kind, category, keys, computer, flags, replace=False |
81eb7091c494
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Raphaël Gomès <rgomes@octobus.net>
parents:
47078
diff
changeset
|
1889 ): |
46713
bc2519513ae0
sidedata-exchange: add `wanted_sidedata` and `sidedata_computers` to repos
Raphaël Gomès <rgomes@octobus.net>
parents:
46712
diff
changeset
|
1890 pass |
bc2519513ae0
sidedata-exchange: add `wanted_sidedata` and `sidedata_computers` to repos
Raphaël Gomès <rgomes@octobus.net>
parents:
46712
diff
changeset
|
1891 |
bc2519513ae0
sidedata-exchange: add `wanted_sidedata` and `sidedata_computers` to repos
Raphaël Gomès <rgomes@octobus.net>
parents:
46712
diff
changeset
|
1892 def register_wanted_sidedata(category): |
bc2519513ae0
sidedata-exchange: add `wanted_sidedata` and `sidedata_computers` to repos
Raphaël Gomès <rgomes@octobus.net>
parents:
46712
diff
changeset
|
1893 pass |
bc2519513ae0
sidedata-exchange: add `wanted_sidedata` and `sidedata_computers` to repos
Raphaël Gomès <rgomes@octobus.net>
parents:
46712
diff
changeset
|
1894 |
43076
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43032
diff
changeset
|
1895 |
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parents:
43032
diff
changeset
|
1896 class completelocalrepository( |
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parents:
43032
diff
changeset
|
1897 ilocalrepositorymain, ilocalrepositoryfilestorage |
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parents:
43032
diff
changeset
|
1898 ): |
39764
e4e881572382
localrepo: iteratively derive local repository type
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39700
diff
changeset
|
1899 """Complete interface for a local repository.""" |
40021
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
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|
1900 |
43076
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diff
changeset
|
1901 |
40021
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parents:
40002
diff
changeset
|
1902 class iwireprotocolcommandcacher(interfaceutil.Interface): |
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wireprotov2: support response caching
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parents:
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diff
changeset
|
1903 """Represents a caching backend for wire protocol commands. |
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parents:
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diff
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|
1904 |
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40002
diff
changeset
|
1905 Wire protocol version 2 supports transparent caching of many commands. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1906 To leverage this caching, servers can activate objects that cache |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1907 command responses. Objects handle both cache writing and reading. |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1908 This interface defines how that response caching mechanism works. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1909 |
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parents:
40002
diff
changeset
|
1910 Wire protocol version 2 commands emit a series of objects that are |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1911 serialized and sent to the client. The caching layer exists between |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1912 the invocation of the command function and the sending of its output |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1913 objects to an output layer. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1914 |
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parents:
40002
diff
changeset
|
1915 Instances of this interface represent a binding to a cache that |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1916 can serve a response (in place of calling a command function) and/or |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1917 write responses to a cache for subsequent use. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
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|
1918 |
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parents:
40002
diff
changeset
|
1919 When a command request arrives, the following happens with regards |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1920 to this interface: |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1921 |
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parents:
40002
diff
changeset
|
1922 1. The server determines whether the command request is cacheable. |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1923 2. If it is, an instance of this interface is spawned. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1924 3. The cacher is activated in a context manager (``__enter__`` is called). |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1925 4. A cache *key* for that request is derived. This will call the |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1926 instance's ``adjustcachekeystate()`` method so the derivation |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1927 can be influenced. |
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wireprotov2: support response caching
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parents:
40002
diff
changeset
|
1928 5. The cacher is informed of the derived cache key via a call to |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1929 ``setcachekey()``. |
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parents:
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diff
changeset
|
1930 6. The cacher's ``lookup()`` method is called to test for presence of |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1931 the derived key in the cache. |
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parents:
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diff
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|
1932 7. If ``lookup()`` returns a hit, that cached result is used in place |
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parents:
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diff
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|
1933 of invoking the command function. ``__exit__`` is called and the instance |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1934 is discarded. |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
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|
1935 8. The command function is invoked. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
1936 9. ``onobject()`` is called for each object emitted by the command |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
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|
1937 function. |
40279
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Connor Sheehan <sheehan@mozilla.com>
parents:
40171
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|
1938 10. After the final object is seen, ``onfinished()`` is called. |
40021
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diff
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|
1939 11. ``__exit__`` is called to signal the end of use of the instance. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1940 |
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parents:
40002
diff
changeset
|
1941 Cache *key* derivation can be influenced by the instance. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1942 |
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parents:
40002
diff
changeset
|
1943 Cache keys are initially derived by a deterministic representation of |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1944 the command request. This includes the command name, arguments, protocol |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1945 version, etc. This initial key derivation is performed by CBOR-encoding a |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1946 data structure and feeding that output into a hasher. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1947 |
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parents:
40002
diff
changeset
|
1948 Instances of this interface can influence this initial key derivation |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1949 via ``adjustcachekeystate()``. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1950 |
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parents:
40002
diff
changeset
|
1951 The instance is informed of the derived cache key via a call to |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1952 ``setcachekey()``. The instance must store the key locally so it can |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1953 be consulted on subsequent operations that may require it. |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1954 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1955 When constructed, the instance has access to a callable that can be used |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1956 for encoding response objects. This callable receives as its single |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1957 argument an object emitted by a command function. It returns an iterable |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1958 of bytes chunks representing the encoded object. Unless the cacher is |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1959 caching native Python objects in memory or has a way of reconstructing |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1960 the original Python objects, implementations typically call this function |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1961 to produce bytes from the output objects and then store those bytes in |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1962 the cache. When it comes time to re-emit those bytes, they are wrapped |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1963 in a ``wireprototypes.encodedresponse`` instance to tell the output |
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wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
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1964 layer that they are pre-encoded. |
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1965 |
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1966 When receiving the objects emitted by the command function, instances |
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1967 can choose what to do with those objects. The simplest thing to do is |
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1968 re-emit the original objects. They will be forwarded to the output |
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1969 layer and will be processed as if the cacher did not exist. |
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1970 |
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1971 Implementations could also choose to not emit objects - instead locally |
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1972 buffering objects or their encoded representation. They could then emit |
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1973 a single "coalesced" object when ``onfinished()`` is called. In |
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1974 this way, the implementation would function as a filtering layer of |
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1975 sorts. |
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1976 |
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1977 When caching objects, typically the encoded form of the object will |
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1978 be stored. Keep in mind that if the original object is forwarded to |
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1979 the output layer, it will need to be encoded there as well. For large |
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1980 output, this redundant encoding could add overhead. Implementations |
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1981 could wrap the encoded object data in ``wireprototypes.encodedresponse`` |
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1982 instances to avoid this overhead. |
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1983 """ |
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1984 |
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1985 def __enter__(): |
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1986 """Marks the instance as active. |
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1987 |
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1988 Should return self. |
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1989 """ |
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1990 |
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1991 def __exit__(exctype, excvalue, exctb): |
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1992 """Called when cacher is no longer used. |
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1993 |
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1994 This can be used by implementations to perform cleanup actions (e.g. |
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1995 disconnecting network sockets, aborting a partially cached response. |
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1996 """ |
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1997 |
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1998 def adjustcachekeystate(state): |
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1999 """Influences cache key derivation by adjusting state to derive key. |
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2000 |
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2001 A dict defining the state used to derive the cache key is passed. |
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2002 |
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2003 Implementations can modify this dict to record additional state that |
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2004 is wanted to influence key derivation. |
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2005 |
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2006 Implementations are *highly* encouraged to not modify or delete |
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2007 existing keys. |
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2008 """ |
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2009 |
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2010 def setcachekey(key): |
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2011 """Record the derived cache key for this request. |
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2012 |
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2013 Instances may mutate the key for internal usage, as desired. e.g. |
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2014 instances may wish to prepend the repo name, introduce path |
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2015 components for filesystem or URL addressing, etc. Behavior is up to |
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2016 the cache. |
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2017 |
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2018 Returns a bool indicating if the request is cacheable by this |
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2019 instance. |
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2020 """ |
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2021 |
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2022 def lookup(): |
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2023 """Attempt to resolve an entry in the cache. |
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2024 |
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2025 The instance is instructed to look for the cache key that it was |
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2026 informed about via the call to ``setcachekey()``. |
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2027 |
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2028 If there's no cache hit or the cacher doesn't wish to use the cached |
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2029 entry, ``None`` should be returned. |
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2030 |
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2031 Else, a dict defining the cached result should be returned. The |
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2032 dict may have the following keys: |
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2033 |
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2034 objs |
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2035 An iterable of objects that should be sent to the client. That |
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2036 iterable of objects is expected to be what the command function |
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2037 would return if invoked or an equivalent representation thereof. |
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2038 """ |
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2039 |
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2040 def onobject(obj): |
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2041 """Called when a new object is emitted from the command function. |
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2042 |
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2043 Receives as its argument the object that was emitted from the |
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2044 command function. |
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2045 |
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2046 This method returns an iterator of objects to forward to the output |
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2047 layer. The easiest implementation is a generator that just |
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2048 ``yield obj``. |
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2049 """ |
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2050 |
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2051 def onfinished(): |
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2052 """Called after all objects have been emitted from the command function. |
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2053 |
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2054 Implementations should return an iterator of objects to forward to |
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2055 the output layer. |
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2056 |
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2057 This method can be a generator. |
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2058 """ |