Mercurial > hg
annotate mercurial/interfaces/repository.py @ 45788:a5206e71c536
revlog: extend addgroup() with callback for duplicates
The addgroup() interface currently doesn't allow the caller to keep
track of duplicated nodes except by looking at the returned node list.
Add an optional second callback for this purpose and change the return
type to a boolean. This allows follow-up changes to use more efficient
storage for the node list in places that are memory-sensitive.
Differential Revision: https://phab.mercurial-scm.org/D9231
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Sun, 18 Oct 2020 22:18:02 +0200 |
parents | 2d6aea053153 |
children | 89a2afe31e82 |
rev | line source |
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1 # repository.py - Interfaces and base classes for repositories and peers. |
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2 # |
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3 # Copyright 2017 Gregory Szorc <gregory.szorc@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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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 # Files storage may lack data for all ancestors. |
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25 REPO_FEATURE_SHALLOW_FILE_STORAGE = b'shallowfilestorage' |
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26 |
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27 REVISION_FLAG_CENSORED = 1 << 15 |
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28 REVISION_FLAG_ELLIPSIS = 1 << 14 |
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29 REVISION_FLAG_EXTSTORED = 1 << 13 |
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30 REVISION_FLAG_SIDEDATA = 1 << 12 |
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31 REVISION_FLAG_HASCOPIESINFO = 1 << 11 |
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32 |
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33 REVISION_FLAGS_KNOWN = ( |
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34 REVISION_FLAG_CENSORED |
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35 | REVISION_FLAG_ELLIPSIS |
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36 | REVISION_FLAG_EXTSTORED |
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37 | REVISION_FLAG_SIDEDATA |
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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 class ipeerconnection(interfaceutil.Interface): |
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48 """Represents a "connection" to a repository. |
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49 |
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50 This is the base interface for representing a connection to a repository. |
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51 It holds basic properties and methods applicable to all peer types. |
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52 |
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53 This is not a complete interface definition and should not be used |
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54 outside of this module. |
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55 """ |
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56 |
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57 ui = interfaceutil.Attribute("""ui.ui instance""") |
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58 |
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59 def url(): |
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60 """Returns a URL string representing this peer. |
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61 |
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62 Currently, implementations expose the raw URL used to construct the |
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63 instance. It may contain credentials as part of the URL. The |
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64 expectations of the value aren't well-defined and this could lead to |
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65 data leakage. |
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66 |
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67 TODO audit/clean consumers and more clearly define the contents of this |
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68 value. |
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69 """ |
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70 |
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71 def local(): |
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72 """Returns a local repository instance. |
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73 |
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74 If the peer represents a local repository, returns an object that |
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75 can be used to interface with it. Otherwise returns ``None``. |
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76 """ |
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77 |
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78 def peer(): |
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79 """Returns an object conforming to this interface. |
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80 |
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81 Most implementations will ``return self``. |
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82 """ |
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83 |
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84 def canpush(): |
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85 """Returns a boolean indicating if this peer can be pushed to.""" |
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86 |
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87 def close(): |
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88 """Close the connection to this peer. |
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89 |
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90 This is called when the peer will no longer be used. Resources |
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91 associated with the peer should be cleaned up. |
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92 """ |
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93 |
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94 |
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95 class ipeercapabilities(interfaceutil.Interface): |
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96 """Peer sub-interface related to capabilities.""" |
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97 |
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98 def capable(name): |
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99 """Determine support for a named capability. |
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100 |
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101 Returns ``False`` if capability not supported. |
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102 |
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103 Returns ``True`` if boolean capability is supported. Returns a string |
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104 if capability support is non-boolean. |
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105 |
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106 Capability strings may or may not map to wire protocol capabilities. |
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107 """ |
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108 |
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109 def requirecap(name, purpose): |
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110 """Require a capability to be present. |
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111 |
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112 Raises a ``CapabilityError`` if the capability isn't present. |
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113 """ |
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114 |
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115 |
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116 class ipeercommands(interfaceutil.Interface): |
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117 """Client-side interface for communicating over the wire protocol. |
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118 |
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119 This interface is used as a gateway to the Mercurial wire protocol. |
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120 methods commonly call wire protocol commands of the same name. |
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121 """ |
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122 |
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123 def branchmap(): |
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124 """Obtain heads in named branches. |
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125 |
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126 Returns a dict mapping branch name to an iterable of nodes that are |
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127 heads on that branch. |
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128 """ |
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129 |
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130 def capabilities(): |
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131 """Obtain capabilities of the peer. |
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132 |
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133 Returns a set of string capabilities. |
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134 """ |
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135 |
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136 def clonebundles(): |
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137 """Obtains the clone bundles manifest for the repo. |
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138 |
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139 Returns the manifest as unparsed bytes. |
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140 """ |
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141 |
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142 def debugwireargs(one, two, three=None, four=None, five=None): |
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143 """Used to facilitate debugging of arguments passed over the wire.""" |
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144 |
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145 def getbundle(source, **kwargs): |
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146 """Obtain remote repository data as a bundle. |
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147 |
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148 This command is how the bulk of repository data is transferred from |
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149 the peer to the local repository |
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150 |
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151 Returns a generator of bundle data. |
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152 """ |
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153 |
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154 def heads(): |
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155 """Determine all known head revisions in the peer. |
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156 |
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157 Returns an iterable of binary nodes. |
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158 """ |
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159 |
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160 def known(nodes): |
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161 """Determine whether multiple nodes are known. |
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162 |
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163 Accepts an iterable of nodes whose presence to check for. |
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164 |
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165 Returns an iterable of booleans indicating of the corresponding node |
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166 at that index is known to the peer. |
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167 """ |
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168 |
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169 def listkeys(namespace): |
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170 """Obtain all keys in a pushkey namespace. |
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171 |
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172 Returns an iterable of key names. |
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173 """ |
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174 |
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175 def lookup(key): |
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176 """Resolve a value to a known revision. |
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177 |
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178 Returns a binary node of the resolved revision on success. |
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179 """ |
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180 |
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181 def pushkey(namespace, key, old, new): |
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182 """Set a value using the ``pushkey`` protocol. |
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183 |
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184 Arguments correspond to the pushkey namespace and key to operate on and |
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185 the old and new values for that key. |
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186 |
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187 Returns a string with the peer result. The value inside varies by the |
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188 namespace. |
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189 """ |
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190 |
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191 def stream_out(): |
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192 """Obtain streaming clone data. |
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193 |
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194 Successful result should be a generator of data chunks. |
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195 """ |
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196 |
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197 def unbundle(bundle, heads, url): |
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198 """Transfer repository data to the peer. |
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199 |
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200 This is how the bulk of data during a push is transferred. |
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201 |
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202 Returns the integer number of heads added to the peer. |
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203 """ |
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204 |
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205 |
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206 class ipeerlegacycommands(interfaceutil.Interface): |
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207 """Interface for implementing support for legacy wire protocol commands. |
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208 |
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209 Wire protocol commands transition to legacy status when they are no longer |
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210 used by modern clients. To facilitate identifying which commands are |
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211 legacy, the interfaces are split. |
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212 """ |
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213 |
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214 def between(pairs): |
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215 """Obtain nodes between pairs of nodes. |
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216 |
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217 ``pairs`` is an iterable of node pairs. |
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218 |
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219 Returns an iterable of iterables of nodes corresponding to each |
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220 requested pair. |
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221 """ |
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222 |
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223 def branches(nodes): |
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224 """Obtain ancestor changesets of specific nodes back to a branch point. |
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225 |
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226 For each requested node, the peer finds the first ancestor node that is |
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227 a DAG root or is a merge. |
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228 |
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229 Returns an iterable of iterables with the resolved values for each node. |
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230 """ |
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231 |
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232 def changegroup(nodes, source): |
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233 """Obtain a changegroup with data for descendants of specified nodes.""" |
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234 |
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235 def changegroupsubset(bases, heads, source): |
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236 pass |
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237 |
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238 |
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239 class ipeercommandexecutor(interfaceutil.Interface): |
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240 """Represents a mechanism to execute remote commands. |
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241 |
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242 This is the primary interface for requesting that wire protocol commands |
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243 be executed. Instances of this interface are active in a context manager |
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244 and have a well-defined lifetime. When the context manager exits, all |
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245 outstanding requests are waited on. |
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246 """ |
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247 |
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248 def callcommand(name, args): |
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249 """Request that a named command be executed. |
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250 |
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251 Receives the command name and a dictionary of command arguments. |
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252 |
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253 Returns a ``concurrent.futures.Future`` that will resolve to the |
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254 result of that command request. That exact value is left up to |
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255 the implementation and possibly varies by command. |
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256 |
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257 Not all commands can coexist with other commands in an executor |
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258 instance: it depends on the underlying wire protocol transport being |
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259 used and the command itself. |
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260 |
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261 Implementations MAY call ``sendcommands()`` automatically if the |
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262 requested command can not coexist with other commands in this executor. |
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263 |
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264 Implementations MAY call ``sendcommands()`` automatically when the |
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265 future's ``result()`` is called. So, consumers using multiple |
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266 commands with an executor MUST ensure that ``result()`` is not called |
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267 until all command requests have been issued. |
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268 """ |
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269 |
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270 def sendcommands(): |
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271 """Trigger submission of queued command requests. |
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272 |
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273 Not all transports submit commands as soon as they are requested to |
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274 run. When called, this method forces queued command requests to be |
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275 issued. It will no-op if all commands have already been sent. |
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276 |
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277 When called, no more new commands may be issued with this executor. |
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278 """ |
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279 |
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280 def close(): |
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281 """Signal that this command request is finished. |
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282 |
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283 When called, no more new commands may be issued. All outstanding |
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284 commands that have previously been issued are waited on before |
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285 returning. This not only includes waiting for the futures to resolve, |
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286 but also waiting for all response data to arrive. In other words, |
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287 calling this waits for all on-wire state for issued command requests |
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288 to finish. |
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289 |
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290 When used as a context manager, this method is called when exiting the |
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291 context manager. |
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292 |
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293 This method may call ``sendcommands()`` if there are buffered commands. |
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294 """ |
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295 |
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296 |
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297 class ipeerrequests(interfaceutil.Interface): |
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298 """Interface for executing commands on a peer.""" |
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299 |
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300 limitedarguments = interfaceutil.Attribute( |
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301 """True if the peer cannot receive large argument value for commands.""" |
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302 ) |
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303 |
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304 def commandexecutor(): |
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305 """A context manager that resolves to an ipeercommandexecutor. |
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306 |
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307 The object this resolves to can be used to issue command requests |
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308 to the peer. |
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309 |
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310 Callers should call its ``callcommand`` method to issue command |
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311 requests. |
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312 |
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313 A new executor should be obtained for each distinct set of commands |
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314 (possibly just a single command) that the consumer wants to execute |
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315 as part of a single operation or round trip. This is because some |
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316 peers are half-duplex and/or don't support persistent connections. |
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317 e.g. in the case of HTTP peers, commands sent to an executor represent |
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318 a single HTTP request. While some peers may support multiple command |
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319 sends over the wire per executor, consumers need to code to the least |
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320 capable peer. So it should be assumed that command executors buffer |
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321 called commands until they are told to send them and that each |
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322 command executor could result in a new connection or wire-level request |
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323 being issued. |
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324 """ |
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325 |
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326 |
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327 class ipeerbase(ipeerconnection, ipeercapabilities, ipeerrequests): |
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328 """Unified interface for peer repositories. |
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329 |
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330 All peer instances must conform to this interface. |
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331 """ |
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332 |
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333 |
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334 class ipeerv2(ipeerconnection, ipeercapabilities, ipeerrequests): |
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335 """Unified peer interface for wire protocol version 2 peers.""" |
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336 |
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337 apidescriptor = interfaceutil.Attribute( |
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338 """Data structure holding description of server API.""" |
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339 ) |
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340 |
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341 |
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342 @interfaceutil.implementer(ipeerbase) |
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343 class peer(object): |
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344 """Base class for peer repositories.""" |
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345 |
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346 limitedarguments = False |
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347 |
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348 def capable(self, name): |
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349 caps = self.capabilities() |
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350 if name in caps: |
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351 return True |
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352 |
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353 name = b'%s=' % name |
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354 for cap in caps: |
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355 if cap.startswith(name): |
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356 return cap[len(name) :] |
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357 |
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358 return False |
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359 |
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360 def requirecap(self, name, purpose): |
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361 if self.capable(name): |
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362 return |
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363 |
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364 raise error.CapabilityError( |
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365 _( |
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366 b'cannot %s; remote repository does not support the ' |
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367 b'\'%s\' capability' |
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368 ) |
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369 % (purpose, name) |
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370 ) |
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371 |
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372 |
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373 class iverifyproblem(interfaceutil.Interface): |
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374 """Represents a problem with the integrity of the repository. |
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375 |
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376 Instances of this interface are emitted to describe an integrity issue |
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377 with a repository (e.g. corrupt storage, missing data, etc). |
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378 |
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379 Instances are essentially messages associated with severity. |
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380 """ |
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381 |
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382 warning = interfaceutil.Attribute( |
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383 """Message indicating a non-fatal problem.""" |
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384 ) |
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385 |
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386 error = interfaceutil.Attribute("""Message indicating a fatal problem.""") |
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387 |
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388 node = interfaceutil.Attribute( |
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389 """Revision encountering the problem. |
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390 |
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391 ``None`` means the problem doesn't apply to a single revision. |
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392 """ |
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393 ) |
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394 |
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395 |
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396 class irevisiondelta(interfaceutil.Interface): |
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397 """Represents a delta between one revision and another. |
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398 |
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399 Instances convey enough information to allow a revision to be exchanged |
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400 with another repository. |
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401 |
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402 Instances represent the fulltext revision data or a delta against |
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403 another revision. Therefore the ``revision`` and ``delta`` attributes |
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404 are mutually exclusive. |
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405 |
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406 Typically used for changegroup generation. |
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407 """ |
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408 |
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409 node = interfaceutil.Attribute("""20 byte node of this revision.""") |
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410 |
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411 p1node = interfaceutil.Attribute( |
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412 """20 byte node of 1st parent of this revision.""" |
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413 ) |
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414 |
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415 p2node = interfaceutil.Attribute( |
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416 """20 byte node of 2nd parent of this revision.""" |
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417 ) |
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418 |
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419 linknode = interfaceutil.Attribute( |
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420 """20 byte node of the changelog revision this node is linked to.""" |
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421 ) |
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422 |
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423 flags = interfaceutil.Attribute( |
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424 """2 bytes of integer flags that apply to this revision. |
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425 |
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426 This is a bitwise composition of the ``REVISION_FLAG_*`` constants. |
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427 """ |
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428 ) |
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429 |
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430 basenode = interfaceutil.Attribute( |
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431 """20 byte node of the revision this data is a delta against. |
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432 |
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433 ``nullid`` indicates that the revision is a full revision and not |
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434 a delta. |
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435 """ |
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436 ) |
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437 |
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438 baserevisionsize = interfaceutil.Attribute( |
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439 """Size of base revision this delta is against. |
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440 |
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441 May be ``None`` if ``basenode`` is ``nullid``. |
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442 """ |
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443 ) |
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444 |
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445 revision = interfaceutil.Attribute( |
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446 """Raw fulltext of revision data for this node.""" |
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447 ) |
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448 |
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449 delta = interfaceutil.Attribute( |
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450 """Delta between ``basenode`` and ``node``. |
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451 |
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452 Stored in the bdiff delta format. |
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453 """ |
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454 ) |
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455 |
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456 |
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457 class ifilerevisionssequence(interfaceutil.Interface): |
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458 """Contains index data for all revisions of a file. |
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459 |
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460 Types implementing this behave like lists of tuples. The index |
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461 in the list corresponds to the revision number. The values contain |
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462 index metadata. |
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463 |
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464 The *null* revision (revision number -1) is always the last item |
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465 in the index. |
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466 """ |
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467 |
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468 def __len__(): |
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469 """The total number of revisions.""" |
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470 |
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471 def __getitem__(rev): |
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472 """Returns the object having a specific revision number. |
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473 |
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474 Returns an 8-tuple with the following fields: |
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475 |
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476 offset+flags |
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477 Contains the offset and flags for the revision. 64-bit unsigned |
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478 integer where first 6 bytes are the offset and the next 2 bytes |
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479 are flags. The offset can be 0 if it is not used by the store. |
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480 compressed size |
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481 Size of the revision data in the store. It can be 0 if it isn't |
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482 needed by the store. |
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483 uncompressed size |
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484 Fulltext size. It can be 0 if it isn't needed by the store. |
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485 base revision |
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486 Revision number of revision the delta for storage is encoded |
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487 against. -1 indicates not encoded against a base revision. |
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488 link revision |
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489 Revision number of changelog revision this entry is related to. |
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490 p1 revision |
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491 Revision number of 1st parent. -1 if no 1st parent. |
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492 p2 revision |
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493 Revision number of 2nd parent. -1 if no 1st parent. |
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494 node |
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495 Binary node value for this revision number. |
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496 |
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497 Negative values should index off the end of the sequence. ``-1`` |
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498 should return the null revision. ``-2`` should return the most |
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499 recent revision. |
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500 """ |
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501 |
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502 def __contains__(rev): |
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503 """Whether a revision number exists.""" |
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504 |
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505 def insert(self, i, entry): |
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506 """Add an item to the index at specific revision.""" |
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507 |
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508 |
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509 class ifileindex(interfaceutil.Interface): |
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510 """Storage interface for index data of a single file. |
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511 |
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512 File storage data is divided into index metadata and data storage. |
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513 This interface defines the index portion of the interface. |
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514 |
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515 The index logically consists of: |
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516 |
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517 * A mapping between revision numbers and nodes. |
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518 * DAG data (storing and querying the relationship between nodes). |
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519 * Metadata to facilitate storage. |
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520 """ |
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521 |
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522 def __len__(): |
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523 """Obtain the number of revisions stored for this file.""" |
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524 |
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525 def __iter__(): |
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526 """Iterate over revision numbers for this file.""" |
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527 |
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528 def hasnode(node): |
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529 """Returns a bool indicating if a node is known to this store. |
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530 |
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531 Implementations must only return True for full, binary node values: |
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532 hex nodes, revision numbers, and partial node matches must be |
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533 rejected. |
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534 |
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535 The null node is never present. |
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536 """ |
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537 |
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538 def revs(start=0, stop=None): |
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539 """Iterate over revision numbers for this file, with control.""" |
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540 |
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541 def parents(node): |
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542 """Returns a 2-tuple of parent nodes for a revision. |
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543 |
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544 Values will be ``nullid`` if the parent is empty. |
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545 """ |
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546 |
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547 def parentrevs(rev): |
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548 """Like parents() but operates on revision numbers.""" |
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549 |
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550 def rev(node): |
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551 """Obtain the revision number given a node. |
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552 |
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553 Raises ``error.LookupError`` if the node is not known. |
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554 """ |
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555 |
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556 def node(rev): |
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557 """Obtain the node value given a revision number. |
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558 |
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559 Raises ``IndexError`` if the node is not known. |
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560 """ |
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561 |
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562 def lookup(node): |
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563 """Attempt to resolve a value to a node. |
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564 |
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565 Value can be a binary node, hex node, revision number, or a string |
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566 that can be converted to an integer. |
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567 |
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568 Raises ``error.LookupError`` if a node could not be resolved. |
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569 """ |
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570 |
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571 def linkrev(rev): |
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572 """Obtain the changeset revision number a revision is linked to.""" |
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573 |
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574 def iscensored(rev): |
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575 """Return whether a revision's content has been censored.""" |
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576 |
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577 def commonancestorsheads(node1, node2): |
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578 """Obtain an iterable of nodes containing heads of common ancestors. |
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579 |
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580 See ``ancestor.commonancestorsheads()``. |
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581 """ |
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582 |
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583 def descendants(revs): |
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584 """Obtain descendant revision numbers for a set of revision numbers. |
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585 |
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586 If ``nullrev`` is in the set, this is equivalent to ``revs()``. |
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587 """ |
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588 |
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589 def heads(start=None, stop=None): |
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590 """Obtain a list of nodes that are DAG heads, with control. |
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591 |
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592 The set of revisions examined can be limited by specifying |
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593 ``start`` and ``stop``. ``start`` is a node. ``stop`` is an |
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594 iterable of nodes. DAG traversal starts at earlier revision |
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595 ``start`` and iterates forward until any node in ``stop`` is |
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596 encountered. |
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597 """ |
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598 |
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599 def children(node): |
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600 """Obtain nodes that are children of a node. |
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601 |
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602 Returns a list of nodes. |
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603 """ |
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604 |
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605 |
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606 class ifiledata(interfaceutil.Interface): |
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607 """Storage interface for data storage of a specific file. |
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608 |
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609 This complements ``ifileindex`` and provides an interface for accessing |
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610 data for a tracked file. |
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611 """ |
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612 |
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613 def size(rev): |
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614 """Obtain the fulltext size of file data. |
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615 |
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616 Any metadata is excluded from size measurements. |
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617 """ |
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618 |
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619 def revision(node, raw=False): |
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620 """"Obtain fulltext data for a node. |
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621 |
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622 By default, any storage transformations are applied before the data |
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623 is returned. If ``raw`` is True, non-raw storage transformations |
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624 are not applied. |
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625 |
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626 The fulltext data may contain a header containing metadata. Most |
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627 consumers should use ``read()`` to obtain the actual file data. |
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628 """ |
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629 |
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630 def rawdata(node): |
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631 """Obtain raw data for a node. |
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632 """ |
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633 |
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634 def read(node): |
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635 """Resolve file fulltext data. |
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636 |
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637 This is similar to ``revision()`` except any metadata in the data |
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638 headers is stripped. |
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639 """ |
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640 |
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641 def renamed(node): |
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642 """Obtain copy metadata for a node. |
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643 |
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644 Returns ``False`` if no copy metadata is stored or a 2-tuple of |
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645 (path, node) from which this revision was copied. |
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646 """ |
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647 |
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648 def cmp(node, fulltext): |
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649 """Compare fulltext to another revision. |
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650 |
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651 Returns True if the fulltext is different from what is stored. |
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652 |
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653 This takes copy metadata into account. |
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654 |
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655 TODO better document the copy metadata and censoring logic. |
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656 """ |
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657 |
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658 def emitrevisions( |
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659 nodes, |
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660 nodesorder=None, |
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661 revisiondata=False, |
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662 assumehaveparentrevisions=False, |
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663 deltamode=CG_DELTAMODE_STD, |
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664 ): |
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665 """Produce ``irevisiondelta`` for revisions. |
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666 |
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667 Given an iterable of nodes, emits objects conforming to the |
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668 ``irevisiondelta`` interface that describe revisions in storage. |
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669 |
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670 This method is a generator. |
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671 |
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672 The input nodes may be unordered. Implementations must ensure that a |
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673 node's parents are emitted before the node itself. Transitively, this |
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674 means that a node may only be emitted once all its ancestors in |
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675 ``nodes`` have also been emitted. |
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676 |
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677 By default, emits "index" data (the ``node``, ``p1node``, and |
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678 ``p2node`` attributes). If ``revisiondata`` is set, revision data |
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679 will also be present on the emitted objects. |
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680 |
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681 With default argument values, implementations can choose to emit |
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682 either fulltext revision data or a delta. When emitting deltas, |
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683 implementations must consider whether the delta's base revision |
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684 fulltext is available to the receiver. |
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685 |
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686 The base revision fulltext is guaranteed to be available if any of |
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687 the following are met: |
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688 |
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689 * Its fulltext revision was emitted by this method call. |
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690 * A delta for that revision was emitted by this method call. |
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691 * ``assumehaveparentrevisions`` is True and the base revision is a |
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692 parent of the node. |
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693 |
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694 ``nodesorder`` can be used to control the order that revisions are |
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695 emitted. By default, revisions can be reordered as long as they are |
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696 in DAG topological order (see above). If the value is ``nodes``, |
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697 the iteration order from ``nodes`` should be used. If the value is |
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698 ``storage``, then the native order from the backing storage layer |
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699 is used. (Not all storage layers will have strong ordering and behavior |
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700 of this mode is storage-dependent.) ``nodes`` ordering can force |
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701 revisions to be emitted before their ancestors, so consumers should |
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702 use it with care. |
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703 |
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704 The ``linknode`` attribute on the returned ``irevisiondelta`` may not |
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705 be set and it is the caller's responsibility to resolve it, if needed. |
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706 |
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707 If ``deltamode`` is CG_DELTAMODE_PREV and revision data is requested, |
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708 all revision data should be emitted as deltas against the revision |
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709 emitted just prior. The initial revision should be a delta against its |
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710 1st parent. |
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711 """ |
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712 |
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713 |
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714 class ifilemutation(interfaceutil.Interface): |
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715 """Storage interface for mutation events of a tracked file.""" |
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716 |
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717 def add(filedata, meta, transaction, linkrev, p1, p2): |
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718 """Add a new revision to the store. |
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719 |
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720 Takes file data, dictionary of metadata, a transaction, linkrev, |
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721 and parent nodes. |
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722 |
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723 Returns the node that was added. |
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724 |
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725 May no-op if a revision matching the supplied data is already stored. |
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726 """ |
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727 |
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728 def addrevision( |
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729 revisiondata, |
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730 transaction, |
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731 linkrev, |
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732 p1, |
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733 p2, |
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734 node=None, |
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735 flags=0, |
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736 cachedelta=None, |
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737 ): |
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738 """Add a new revision to the store. |
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739 |
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740 This is similar to ``add()`` except it operates at a lower level. |
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741 |
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742 The data passed in already contains a metadata header, if any. |
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743 |
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744 ``node`` and ``flags`` can be used to define the expected node and |
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745 the flags to use with storage. ``flags`` is a bitwise value composed |
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746 of the various ``REVISION_FLAG_*`` constants. |
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747 |
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748 ``add()`` is usually called when adding files from e.g. the working |
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749 directory. ``addrevision()`` is often called by ``add()`` and for |
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750 scenarios where revision data has already been computed, such as when |
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751 applying raw data from a peer repo. |
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752 """ |
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753 |
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754 def addgroup( |
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755 deltas, |
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756 linkmapper, |
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757 transaction, |
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758 addrevisioncb=None, |
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759 duplicaterevisioncb=None, |
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760 maybemissingparents=False, |
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761 ): |
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762 """Process a series of deltas for storage. |
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763 |
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764 ``deltas`` is an iterable of 7-tuples of |
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765 (node, p1, p2, linknode, deltabase, delta, flags) defining revisions |
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766 to add. |
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767 |
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768 The ``delta`` field contains ``mpatch`` data to apply to a base |
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769 revision, identified by ``deltabase``. The base node can be |
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770 ``nullid``, in which case the header from the delta can be ignored |
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771 and the delta used as the fulltext. |
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772 |
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773 ``addrevisioncb`` should be called for each node as it is committed. |
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774 |
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775 ``maybemissingparents`` is a bool indicating whether the incoming |
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776 data may reference parents/ancestor revisions that aren't present. |
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777 This flag is set when receiving data into a "shallow" store that |
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778 doesn't hold all history. |
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779 |
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780 Returns a list of nodes that were processed. A node will be in the list |
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781 even if it existed in the store previously. |
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782 """ |
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783 |
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784 def censorrevision(tr, node, tombstone=b''): |
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785 """Remove the content of a single revision. |
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786 |
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787 The specified ``node`` will have its content purged from storage. |
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788 Future attempts to access the revision data for this node will |
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789 result in failure. |
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790 |
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791 A ``tombstone`` message can optionally be stored. This message may be |
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792 displayed to users when they attempt to access the missing revision |
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793 data. |
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794 |
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795 Storage backends may have stored deltas against the previous content |
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796 in this revision. As part of censoring a revision, these storage |
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797 backends are expected to rewrite any internally stored deltas such |
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798 that they no longer reference the deleted content. |
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799 """ |
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800 |
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801 def getstrippoint(minlink): |
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802 """Find the minimum revision that must be stripped to strip a linkrev. |
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803 |
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804 Returns a 2-tuple containing the minimum revision number and a set |
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805 of all revisions numbers that would be broken by this strip. |
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806 |
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807 TODO this is highly revlog centric and should be abstracted into |
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808 a higher-level deletion API. ``repair.strip()`` relies on this. |
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809 """ |
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810 |
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811 def strip(minlink, transaction): |
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812 """Remove storage of items starting at a linkrev. |
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813 |
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814 This uses ``getstrippoint()`` to determine the first node to remove. |
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815 Then it effectively truncates storage for all revisions after that. |
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816 |
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817 TODO this is highly revlog centric and should be abstracted into a |
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818 higher-level deletion API. |
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819 """ |
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820 |
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821 |
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822 class ifilestorage(ifileindex, ifiledata, ifilemutation): |
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823 """Complete storage interface for a single tracked file.""" |
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824 |
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825 def files(): |
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826 """Obtain paths that are backing storage for this file. |
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827 |
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828 TODO this is used heavily by verify code and there should probably |
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829 be a better API for that. |
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830 """ |
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831 |
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832 def storageinfo( |
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833 exclusivefiles=False, |
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834 sharedfiles=False, |
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835 revisionscount=False, |
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836 trackedsize=False, |
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837 storedsize=False, |
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838 ): |
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839 """Obtain information about storage for this file's data. |
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840 |
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841 Returns a dict describing storage for this tracked path. The keys |
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842 in the dict map to arguments of the same. The arguments are bools |
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843 indicating whether to calculate and obtain that data. |
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844 |
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845 exclusivefiles |
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846 Iterable of (vfs, path) describing files that are exclusively |
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847 used to back storage for this tracked path. |
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848 |
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849 sharedfiles |
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850 Iterable of (vfs, path) describing files that are used to back |
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851 storage for this tracked path. Those files may also provide storage |
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852 for other stored entities. |
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853 |
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854 revisionscount |
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855 Number of revisions available for retrieval. |
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856 |
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857 trackedsize |
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858 Total size in bytes of all tracked revisions. This is a sum of the |
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859 length of the fulltext of all revisions. |
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860 |
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861 storedsize |
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862 Total size in bytes used to store data for all tracked revisions. |
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863 This is commonly less than ``trackedsize`` due to internal usage |
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864 of deltas rather than fulltext revisions. |
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865 |
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866 Not all storage backends may support all queries are have a reasonable |
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867 value to use. In that case, the value should be set to ``None`` and |
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868 callers are expected to handle this special value. |
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869 """ |
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870 |
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871 def verifyintegrity(state): |
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872 """Verifies the integrity of file storage. |
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873 |
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874 ``state`` is a dict holding state of the verifier process. It can be |
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875 used to communicate data between invocations of multiple storage |
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876 primitives. |
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877 |
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878 If individual revisions cannot have their revision content resolved, |
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879 the method is expected to set the ``skipread`` key to a set of nodes |
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880 that encountered problems. If set, the method can also add the node(s) |
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|
881 to ``safe_renamed`` in order to indicate nodes that may perform the |
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882 rename checks with currently accessible data. |
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883 |
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884 The method yields objects conforming to the ``iverifyproblem`` |
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885 interface. |
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|
886 """ |
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887 |
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888 |
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889 class idirs(interfaceutil.Interface): |
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890 """Interface representing a collection of directories from paths. |
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891 |
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892 This interface is essentially a derived data structure representing |
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|
893 directories from a collection of paths. |
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894 """ |
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|
895 |
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|
896 def addpath(path): |
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897 """Add a path to the collection. |
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|
898 |
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899 All directories in the path will be added to the collection. |
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900 """ |
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|
901 |
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|
902 def delpath(path): |
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|
903 """Remove a path from the collection. |
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|
904 |
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905 If the removal was the last path in a particular directory, the |
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906 directory is removed from the collection. |
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907 """ |
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|
908 |
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|
909 def __iter__(): |
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|
910 """Iterate over the directories in this collection of paths.""" |
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|
911 |
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|
912 def __contains__(path): |
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|
913 """Whether a specific directory is in this collection.""" |
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914 |
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915 |
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916 class imanifestdict(interfaceutil.Interface): |
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917 """Interface representing a manifest data structure. |
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|
918 |
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919 A manifest is effectively a dict mapping paths to entries. Each entry |
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920 consists of a binary node and extra flags affecting that entry. |
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921 """ |
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|
922 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
923 def __getitem__(path): |
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Gregory Szorc <gregory.szorc@gmail.com>
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924 """Returns the binary node value for a path in the manifest. |
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925 |
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926 Raises ``KeyError`` if the path does not exist in the manifest. |
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|
927 |
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928 Equivalent to ``self.find(path)[0]``. |
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|
929 """ |
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|
930 |
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|
931 def find(path): |
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parents:
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|
932 """Returns the entry for a path in the manifest. |
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|
933 |
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934 Returns a 2-tuple of (node, flags). |
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935 |
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936 Raises ``KeyError`` if the path does not exist in the manifest. |
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|
937 """ |
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|
938 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
939 def __len__(): |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
940 """Return the number of entries in the manifest.""" |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
941 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
942 def __nonzero__(): |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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943 """Returns True if the manifest has entries, False otherwise.""" |
c82ea938efbb
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|
944 |
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945 __bool__ = __nonzero__ |
c82ea938efbb
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|
946 |
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|
947 def __setitem__(path, node): |
c82ea938efbb
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|
948 """Define the node value for a path in the manifest. |
c82ea938efbb
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|
949 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
950 If the path is already in the manifest, its flags will be copied to |
c82ea938efbb
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|
951 the new entry. |
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|
952 """ |
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|
953 |
c82ea938efbb
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|
954 def __contains__(path): |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
955 """Whether a path exists in the manifest.""" |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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|
956 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
957 def __delitem__(path): |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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|
958 """Remove a path from the manifest. |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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|
959 |
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960 Raises ``KeyError`` if the path is not in the manifest. |
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|
961 """ |
c82ea938efbb
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|
962 |
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|
963 def __iter__(): |
c82ea938efbb
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Gregory Szorc <gregory.szorc@gmail.com>
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|
964 """Iterate over paths in the manifest.""" |
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|
965 |
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|
966 def iterkeys(): |
c82ea938efbb
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parents:
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|
967 """Iterate over paths in the manifest.""" |
c82ea938efbb
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|
968 |
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|
969 def keys(): |
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|
970 """Obtain a list of paths in the manifest.""" |
c82ea938efbb
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|
971 |
c82ea938efbb
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|
972 def filesnotin(other, match=None): |
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parents:
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|
973 """Obtain the set of paths in this manifest but not in another. |
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974 |
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|
975 ``match`` is an optional matcher function to be applied to both |
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976 manifests. |
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|
977 |
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|
978 Returns a set of paths. |
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979 """ |
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|
980 |
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|
981 def dirs(): |
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|
982 """Returns an object implementing the ``idirs`` interface.""" |
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|
983 |
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|
984 def hasdir(dir): |
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|
985 """Returns a bool indicating if a directory is in this manifest.""" |
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986 |
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|
987 def walk(match): |
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|
988 """Generator of paths in manifest satisfying a matcher. |
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|
989 |
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990 If the matcher has explicit files listed and they don't exist in |
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991 the manifest, ``match.bad()`` is called for each missing file. |
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992 """ |
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993 |
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994 def diff(other, match=None, clean=False): |
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995 """Find differences between this manifest and another. |
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996 |
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997 This manifest is compared to ``other``. |
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998 |
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999 If ``match`` is provided, the two manifests are filtered against this |
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1000 matcher and only entries satisfying the matcher are compared. |
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1001 |
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1002 If ``clean`` is True, unchanged files are included in the returned |
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1003 object. |
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1004 |
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1005 Returns a dict with paths as keys and values of 2-tuples of 2-tuples of |
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1006 the form ``((node1, flag1), (node2, flag2))`` where ``(node1, flag1)`` |
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1007 represents the node and flags for this manifest and ``(node2, flag2)`` |
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1008 are the same for the other manifest. |
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1009 """ |
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1010 |
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1011 def setflag(path, flag): |
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1012 """Set the flag value for a given path. |
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1013 |
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1014 Raises ``KeyError`` if the path is not already in the manifest. |
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1015 """ |
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1016 |
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1017 def get(path, default=None): |
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1018 """Obtain the node value for a path or a default value if missing.""" |
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1019 |
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1020 def flags(path): |
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1021 """Return the flags value for a path (default: empty bytestring).""" |
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1022 |
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1023 def copy(): |
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1024 """Return a copy of this manifest.""" |
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1025 |
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1026 def items(): |
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1027 """Returns an iterable of (path, node) for items in this manifest.""" |
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1028 |
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1029 def iteritems(): |
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1030 """Identical to items().""" |
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1031 |
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1032 def iterentries(): |
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1033 """Returns an iterable of (path, node, flags) for this manifest. |
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1034 |
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1035 Similar to ``iteritems()`` except items are a 3-tuple and include |
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1036 flags. |
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1037 """ |
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1038 |
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1039 def text(): |
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1040 """Obtain the raw data representation for this manifest. |
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1041 |
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1042 Result is used to create a manifest revision. |
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1043 """ |
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1044 |
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1045 def fastdelta(base, changes): |
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1046 """Obtain a delta between this manifest and another given changes. |
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1047 |
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1048 ``base`` in the raw data representation for another manifest. |
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1049 |
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1050 ``changes`` is an iterable of ``(path, to_delete)``. |
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1051 |
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1052 Returns a 2-tuple containing ``bytearray(self.text())`` and the |
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1053 delta between ``base`` and this manifest. |
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1054 |
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1055 If this manifest implementation can't support ``fastdelta()``, |
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1056 raise ``mercurial.manifest.FastdeltaUnavailable``. |
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1057 """ |
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1058 |
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1059 |
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1060 class imanifestrevisionbase(interfaceutil.Interface): |
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1061 """Base interface representing a single revision of a manifest. |
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1062 |
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1063 Should not be used as a primary interface: should always be inherited |
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1064 as part of a larger interface. |
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1065 """ |
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1066 |
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1067 def copy(): |
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1068 """Obtain a copy of this manifest instance. |
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1069 |
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1070 Returns an object conforming to the ``imanifestrevisionwritable`` |
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1071 interface. The instance will be associated with the same |
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1072 ``imanifestlog`` collection as this instance. |
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1073 """ |
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1074 |
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1075 def read(): |
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1076 """Obtain the parsed manifest data structure. |
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1077 |
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1078 The returned object conforms to the ``imanifestdict`` interface. |
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1079 """ |
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1080 |
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1081 |
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1082 class imanifestrevisionstored(imanifestrevisionbase): |
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1083 """Interface representing a manifest revision committed to storage.""" |
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1084 |
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1085 def node(): |
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1086 """The binary node for this manifest.""" |
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1087 |
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1088 parents = interfaceutil.Attribute( |
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1089 """List of binary nodes that are parents for this manifest revision.""" |
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1090 ) |
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1091 |
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1092 def readdelta(shallow=False): |
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1093 """Obtain the manifest data structure representing changes from parent. |
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1094 |
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1095 This manifest is compared to its 1st parent. A new manifest representing |
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1096 those differences is constructed. |
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1097 |
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1098 The returned object conforms to the ``imanifestdict`` interface. |
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1099 """ |
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1100 |
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1101 def readfast(shallow=False): |
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1102 """Calls either ``read()`` or ``readdelta()``. |
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1103 |
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1104 The faster of the two options is called. |
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1105 """ |
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1106 |
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1107 def find(key): |
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1108 """Calls self.read().find(key)``. |
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1109 |
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1110 Returns a 2-tuple of ``(node, flags)`` or raises ``KeyError``. |
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1111 """ |
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1112 |
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1113 |
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1114 class imanifestrevisionwritable(imanifestrevisionbase): |
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1115 """Interface representing a manifest revision that can be committed.""" |
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1116 |
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1117 def write(transaction, linkrev, p1node, p2node, added, removed, match=None): |
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1118 """Add this revision to storage. |
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1119 |
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1120 Takes a transaction object, the changeset revision number it will |
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1121 be associated with, its parent nodes, and lists of added and |
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1122 removed paths. |
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1123 |
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1124 If match is provided, storage can choose not to inspect or write out |
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1125 items that do not match. Storage is still required to be able to provide |
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1126 the full manifest in the future for any directories written (these |
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1127 manifests should not be "narrowed on disk"). |
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1128 |
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1129 Returns the binary node of the created revision. |
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1130 """ |
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1131 |
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1132 |
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1133 class imanifeststorage(interfaceutil.Interface): |
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1134 """Storage interface for manifest data.""" |
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1135 |
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1136 tree = interfaceutil.Attribute( |
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1137 """The path to the directory this manifest tracks. |
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1138 |
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1139 The empty bytestring represents the root manifest. |
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1140 """ |
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1141 ) |
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1142 |
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1143 index = interfaceutil.Attribute( |
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1144 """An ``ifilerevisionssequence`` instance.""" |
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1145 ) |
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1146 |
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1147 indexfile = interfaceutil.Attribute( |
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1148 """Path of revlog index file. |
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1149 |
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1150 TODO this is revlog specific and should not be exposed. |
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1151 """ |
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1152 ) |
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1153 |
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1154 opener = interfaceutil.Attribute( |
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1155 """VFS opener to use to access underlying files used for storage. |
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1156 |
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1157 TODO this is revlog specific and should not be exposed. |
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1158 """ |
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1159 ) |
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1160 |
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1161 version = interfaceutil.Attribute( |
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1162 """Revlog version number. |
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1163 |
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1164 TODO this is revlog specific and should not be exposed. |
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1165 """ |
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1166 ) |
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1167 |
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1168 _generaldelta = interfaceutil.Attribute( |
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1169 """Whether generaldelta storage is being used. |
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1170 |
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1171 TODO this is revlog specific and should not be exposed. |
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1172 """ |
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1173 ) |
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1174 |
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1175 fulltextcache = interfaceutil.Attribute( |
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1176 """Dict with cache of fulltexts. |
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1177 |
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1178 TODO this doesn't feel appropriate for the storage interface. |
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1179 """ |
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1180 ) |
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1181 |
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1182 def __len__(): |
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1183 """Obtain the number of revisions stored for this manifest.""" |
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1184 |
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1185 def __iter__(): |
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1186 """Iterate over revision numbers for this manifest.""" |
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1187 |
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1188 def rev(node): |
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1189 """Obtain the revision number given a binary node. |
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1190 |
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1191 Raises ``error.LookupError`` if the node is not known. |
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1192 """ |
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1193 |
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1194 def node(rev): |
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1195 """Obtain the node value given a revision number. |
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1196 |
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1197 Raises ``error.LookupError`` if the revision is not known. |
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1198 """ |
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1199 |
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1200 def lookup(value): |
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1201 """Attempt to resolve a value to a node. |
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1202 |
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1203 Value can be a binary node, hex node, revision number, or a bytes |
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1204 that can be converted to an integer. |
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1205 |
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1206 Raises ``error.LookupError`` if a ndoe could not be resolved. |
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1207 """ |
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1208 |
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1209 def parents(node): |
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1210 """Returns a 2-tuple of parent nodes for a node. |
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1211 |
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1212 Values will be ``nullid`` if the parent is empty. |
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1213 """ |
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1214 |
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1215 def parentrevs(rev): |
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1216 """Like parents() but operates on revision numbers.""" |
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1217 |
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1218 def linkrev(rev): |
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1219 """Obtain the changeset revision number a revision is linked to.""" |
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1220 |
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1221 def revision(node, _df=None, raw=False): |
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1222 """Obtain fulltext data for a node.""" |
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1223 |
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1224 def rawdata(node, _df=None): |
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1225 """Obtain raw data for a node.""" |
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1226 |
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1227 def revdiff(rev1, rev2): |
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1228 """Obtain a delta between two revision numbers. |
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1229 |
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1230 The returned data is the result of ``bdiff.bdiff()`` on the raw |
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1231 revision data. |
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1232 """ |
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1233 |
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1234 def cmp(node, fulltext): |
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1235 """Compare fulltext to another revision. |
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1236 |
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1237 Returns True if the fulltext is different from what is stored. |
7f5e6d3e9032
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diff
changeset
|
1238 """ |
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changeset
|
1239 |
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diff
changeset
|
1240 def emitrevisions( |
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parents:
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diff
changeset
|
1241 nodes, |
2372284d9457
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parents:
43032
diff
changeset
|
1242 nodesorder=None, |
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parents:
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diff
changeset
|
1243 revisiondata=False, |
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parents:
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diff
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|
1244 assumehaveparentrevisions=False, |
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parents:
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diff
changeset
|
1245 ): |
39862
5a9ab91e0a45
revlog: new API to emit revision data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39860
diff
changeset
|
1246 """Produce ``irevisiondelta`` describing revisions. |
5a9ab91e0a45
revlog: new API to emit revision data
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parents:
39860
diff
changeset
|
1247 |
5a9ab91e0a45
revlog: new API to emit revision data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39860
diff
changeset
|
1248 See the documentation for ``ifiledata`` for more. |
5a9ab91e0a45
revlog: new API to emit revision data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
1249 """ |
5a9ab91e0a45
revlog: new API to emit revision data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39860
diff
changeset
|
1250 |
45788
a5206e71c536
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Joerg Sonnenberger <joerg@bec.de>
parents:
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diff
changeset
|
1251 def addgroup( |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1252 deltas, |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1253 linkmapper, |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1254 transaction, |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1255 addrevisioncb=None, |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1256 duplicaterevisioncb=None, |
a5206e71c536
revlog: extend addgroup() with callback for duplicates
Joerg Sonnenberger <joerg@bec.de>
parents:
45671
diff
changeset
|
1257 ): |
39314
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parents:
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diff
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|
1258 """Process a series of deltas for storage. |
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parents:
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|
1259 |
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|
1260 See the documentation in ``ifilemutation`` for more. |
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|
1261 """ |
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|
1262 |
39858
9534fe1e5d28
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39851
diff
changeset
|
1263 def rawsize(rev): |
9534fe1e5d28
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39851
diff
changeset
|
1264 """Obtain the size of tracked data. |
9534fe1e5d28
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39851
diff
changeset
|
1265 |
42779
83d090ebec0c
rawdata: update callers in repository
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
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diff
changeset
|
1266 Is equivalent to ``len(m.rawdata(node))``. |
39858
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parents:
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|
1267 |
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|
1268 TODO this method is only used by upgrade code and may be removed. |
9534fe1e5d28
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
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|
1269 """ |
9534fe1e5d28
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parents:
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diff
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|
1270 |
39314
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|
1271 def getstrippoint(minlink): |
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parents:
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diff
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|
1272 """Find minimum revision that must be stripped to strip a linkrev. |
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|
1273 |
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|
1274 See the documentation in ``ifilemutation`` for more. |
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|
1275 """ |
7f5e6d3e9032
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|
1276 |
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|
1277 def strip(minlink, transaction): |
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|
1278 """Remove storage of items starting at a linkrev. |
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|
1279 |
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changeset
|
1280 See the documentation in ``ifilemutation`` for more. |
7f5e6d3e9032
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|
1281 """ |
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|
1282 |
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diff
changeset
|
1283 def checksize(): |
7f5e6d3e9032
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parents:
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diff
changeset
|
1284 """Obtain the expected sizes of backing files. |
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|
1285 |
7f5e6d3e9032
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changeset
|
1286 TODO this is used by verify and it should not be part of the interface. |
7f5e6d3e9032
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diff
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|
1287 """ |
7f5e6d3e9032
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diff
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|
1288 |
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diff
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|
1289 def files(): |
7f5e6d3e9032
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parents:
39244
diff
changeset
|
1290 """Obtain paths that are backing storage for this manifest. |
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
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|
1291 |
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diff
changeset
|
1292 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>
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diff
changeset
|
1293 for this functionality. |
7f5e6d3e9032
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diff
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|
1294 """ |
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diff
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|
1295 |
7f5e6d3e9032
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diff
changeset
|
1296 def deltaparent(rev): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39244
diff
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|
1297 """Obtain the revision that a revision is delta'd against. |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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39244
diff
changeset
|
1298 |
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diff
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|
1299 TODO delta encoding is an implementation detail of storage and should |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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39244
diff
changeset
|
1300 not be exposed to the storage interface. |
7f5e6d3e9032
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diff
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|
1301 """ |
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diff
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|
1302 |
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|
1303 def clone(tr, dest, **kwargs): |
7f5e6d3e9032
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Gregory Szorc <gregory.szorc@gmail.com>
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39244
diff
changeset
|
1304 """Clone this instance to another.""" |
7f5e6d3e9032
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|
1305 |
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changeset
|
1306 def clearcaches(clear_persisted_data=False): |
7f5e6d3e9032
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diff
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|
1307 """Clear any caches associated with this instance.""" |
7f5e6d3e9032
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|
1308 |
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changeset
|
1309 def dirlog(d): |
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parents:
39244
diff
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|
1310 """Obtain a manifest storage instance for a tree.""" |
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|
1311 |
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|
1312 def add( |
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|
1313 m, transaction, link, p1, p2, added, removed, readtree=None, match=None |
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|
1314 ): |
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|
1315 """Add a revision to storage. |
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diff
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|
1316 |
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changeset
|
1317 ``m`` is an object conforming to ``imanifestdict``. |
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|
1318 |
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changeset
|
1319 ``link`` is the linkrev revision number. |
7f5e6d3e9032
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|
1320 |
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|
1321 ``p1`` and ``p2`` are the parent revision numbers. |
7f5e6d3e9032
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|
1322 |
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|
1323 ``added`` and ``removed`` are iterables of added and removed paths, |
7f5e6d3e9032
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diff
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|
1324 respectively. |
39668
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parents:
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diff
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|
1325 |
24870f1be088
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diff
changeset
|
1326 ``readtree`` is a function that can be used to read the child tree(s) |
24870f1be088
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|
1327 when recursively writing the full tree structure when using |
24870f1be088
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|
1328 treemanifets. |
24870f1be088
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|
1329 |
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|
1330 ``match`` is a matcher that can be used to hint to storage that not all |
24870f1be088
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39315
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|
1331 paths must be inspected; this is an optimization and can be safely |
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|
1332 ignored. Note that the storage must still be able to reproduce a full |
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|
1333 manifest including files that did not match. |
39314
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|
1334 """ |
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1335 |
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|
1336 def storageinfo( |
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|
1337 exclusivefiles=False, |
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|
1338 sharedfiles=False, |
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1339 revisionscount=False, |
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1340 trackedsize=False, |
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1341 storedsize=False, |
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1342 ): |
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|
1343 """Obtain information about storage for this manifest's data. |
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|
1344 |
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|
1345 See ``ifilestorage.storageinfo()`` for a description of this method. |
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|
1346 This one behaves the same way, except for manifest data. |
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|
1347 """ |
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1348 |
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1349 |
38530
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diff
changeset
|
1350 class imanifestlog(interfaceutil.Interface): |
39240
2af6b2d8d1d8
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diff
changeset
|
1351 """Interface representing a collection of manifest snapshots. |
2af6b2d8d1d8
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|
1352 |
2af6b2d8d1d8
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|
1353 Represents the root manifest in a repository. |
2af6b2d8d1d8
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39235
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|
1354 |
2af6b2d8d1d8
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39235
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|
1355 Also serves as a means to access nested tree manifests and to cache |
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1356 tree manifests. |
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1357 """ |
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1358 |
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1359 def __getitem__(node): |
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1360 """Obtain a manifest instance for a given binary node. |
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1361 |
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1362 Equivalent to calling ``self.get('', node)``. |
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1363 |
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1364 The returned object conforms to the ``imanifestrevisionstored`` |
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1365 interface. |
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1366 """ |
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1367 |
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1368 def get(tree, node, verify=True): |
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1369 """Retrieve the manifest instance for a given directory and binary node. |
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1370 |
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1371 ``node`` always refers to the node of the root manifest (which will be |
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1372 the only manifest if flat manifests are being used). |
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1373 |
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1374 If ``tree`` is the empty string, the root manifest is returned. |
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1375 Otherwise the manifest for the specified directory will be returned |
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1376 (requires tree manifests). |
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1377 |
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1378 If ``verify`` is True, ``LookupError`` is raised if the node is not |
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1379 known. |
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1380 |
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1381 The returned object conforms to the ``imanifestrevisionstored`` |
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1382 interface. |
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1383 """ |
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1384 |
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|
1385 def getstorage(tree): |
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1386 """Retrieve an interface to storage for a particular tree. |
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1387 |
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|
1388 If ``tree`` is the empty bytestring, storage for the root manifest will |
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1389 be returned. Otherwise storage for a tree manifest is returned. |
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1390 |
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1391 TODO formalize interface for returned object. |
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1392 """ |
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1393 |
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1394 def clearcaches(): |
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1395 """Clear caches associated with this collection.""" |
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1396 |
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1397 def rev(node): |
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1398 """Obtain the revision number for a binary node. |
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1399 |
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1400 Raises ``error.LookupError`` if the node is not known. |
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1401 """ |
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1402 |
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1403 def update_caches(transaction): |
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1404 """update whatever cache are relevant for the used storage.""" |
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1405 |
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1406 |
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1407 class ilocalrepositoryfilestorage(interfaceutil.Interface): |
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1408 """Local repository sub-interface providing access to tracked file storage. |
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1409 |
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1410 This interface defines how a repository accesses storage for a single |
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1411 tracked file path. |
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1412 """ |
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1413 |
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1414 def file(f): |
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1415 """Obtain a filelog for a tracked path. |
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1416 |
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1417 The returned type conforms to the ``ifilestorage`` interface. |
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1418 """ |
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1419 |
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1420 |
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1421 class ilocalrepositorymain(interfaceutil.Interface): |
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1422 """Main interface for local repositories. |
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1423 |
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1424 This currently captures the reality of things - not how things should be. |
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1425 """ |
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1426 |
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1427 supportedformats = interfaceutil.Attribute( |
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1428 """Set of requirements that apply to stream clone. |
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1429 |
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1430 This is actually a class attribute and is shared among all instances. |
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1431 """ |
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1432 ) |
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1433 |
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1434 supported = interfaceutil.Attribute( |
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1435 """Set of requirements that this repo is capable of opening.""" |
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1436 ) |
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1437 |
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1438 requirements = interfaceutil.Attribute( |
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1439 """Set of requirements this repo uses.""" |
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1440 ) |
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1441 |
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1442 features = interfaceutil.Attribute( |
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1443 """Set of "features" this repository supports. |
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1444 |
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1445 A "feature" is a loosely-defined term. It can refer to a feature |
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1446 in the classical sense or can describe an implementation detail |
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1447 of the repository. For example, a ``readonly`` feature may denote |
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1448 the repository as read-only. Or a ``revlogfilestore`` feature may |
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1449 denote that the repository is using revlogs for file storage. |
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1450 |
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1451 The intent of features is to provide a machine-queryable mechanism |
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1452 for repo consumers to test for various repository characteristics. |
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1453 |
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1454 Features are similar to ``requirements``. The main difference is that |
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1455 requirements are stored on-disk and represent requirements to open the |
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1456 repository. Features are more run-time capabilities of the repository |
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1457 and more granular capabilities (which may be derived from requirements). |
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1458 """ |
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1459 ) |
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1460 |
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1461 filtername = interfaceutil.Attribute( |
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1462 """Name of the repoview that is active on this repo.""" |
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1463 ) |
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1464 |
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1465 wvfs = interfaceutil.Attribute( |
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1466 """VFS used to access the working directory.""" |
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1467 ) |
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1468 |
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1469 vfs = interfaceutil.Attribute( |
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1470 """VFS rooted at the .hg directory. |
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1471 |
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1472 Used to access repository data not in the store. |
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1473 """ |
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1474 ) |
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1475 |
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1476 svfs = interfaceutil.Attribute( |
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1477 """VFS rooted at the store. |
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1478 |
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1479 Used to access repository data in the store. Typically .hg/store. |
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1480 But can point elsewhere if the store is shared. |
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1481 """ |
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1482 ) |
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1483 |
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1484 root = interfaceutil.Attribute( |
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1485 """Path to the root of the working directory.""" |
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1486 ) |
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1487 |
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1488 path = interfaceutil.Attribute("""Path to the .hg directory.""") |
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1489 |
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1490 origroot = interfaceutil.Attribute( |
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1491 """The filesystem path that was used to construct the repo.""" |
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1492 ) |
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1493 |
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1494 auditor = interfaceutil.Attribute( |
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1495 """A pathauditor for the working directory. |
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1496 |
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1497 This checks if a path refers to a nested repository. |
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1498 |
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1499 Operates on the filesystem. |
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1500 """ |
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1501 ) |
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1502 |
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1503 nofsauditor = interfaceutil.Attribute( |
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1504 """A pathauditor for the working directory. |
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1505 |
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1506 This is like ``auditor`` except it doesn't do filesystem checks. |
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1507 """ |
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1508 ) |
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1509 |
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1510 baseui = interfaceutil.Attribute( |
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1511 """Original ui instance passed into constructor.""" |
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1512 ) |
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1513 |
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1514 ui = interfaceutil.Attribute("""Main ui instance for this instance.""") |
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1515 |
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1516 sharedpath = interfaceutil.Attribute( |
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1517 """Path to the .hg directory of the repo this repo was shared from.""" |
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1518 ) |
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1519 |
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1520 store = interfaceutil.Attribute("""A store instance.""") |
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1521 |
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1522 spath = interfaceutil.Attribute("""Path to the store.""") |
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1523 |
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1524 sjoin = interfaceutil.Attribute("""Alias to self.store.join.""") |
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1525 |
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1526 cachevfs = interfaceutil.Attribute( |
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1527 """A VFS used to access the cache directory. |
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1528 |
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1529 Typically .hg/cache. |
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1530 """ |
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1531 ) |
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1532 |
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1533 wcachevfs = interfaceutil.Attribute( |
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1534 """A VFS used to access the cache directory dedicated to working copy |
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1535 |
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1536 Typically .hg/wcache. |
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1537 """ |
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1538 ) |
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1539 |
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1540 filteredrevcache = interfaceutil.Attribute( |
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1541 """Holds sets of revisions to be filtered.""" |
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1542 ) |
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1543 |
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1544 names = interfaceutil.Attribute("""A ``namespaces`` instance.""") |
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1545 |
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1546 filecopiesmode = interfaceutil.Attribute( |
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1547 """The way files copies should be dealt with in this repo.""" |
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1548 ) |
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1549 |
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1550 def close(): |
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1551 """Close the handle on this repository.""" |
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1552 |
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1553 def peer(): |
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1554 """Obtain an object conforming to the ``peer`` interface.""" |
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1555 |
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1556 def unfiltered(): |
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1557 """Obtain an unfiltered/raw view of this repo.""" |
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1558 |
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1559 def filtered(name, visibilityexceptions=None): |
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1560 """Obtain a named view of this repository.""" |
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1561 |
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1562 obsstore = interfaceutil.Attribute("""A store of obsolescence data.""") |
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1563 |
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1564 changelog = interfaceutil.Attribute("""A handle on the changelog revlog.""") |
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1565 |
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1566 manifestlog = interfaceutil.Attribute( |
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1567 """An instance conforming to the ``imanifestlog`` interface. |
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1568 |
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1569 Provides access to manifests for the repository. |
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1570 """ |
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1571 ) |
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1572 |
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1573 dirstate = interfaceutil.Attribute("""Working directory state.""") |
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1574 |
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1575 narrowpats = interfaceutil.Attribute( |
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1576 """Matcher patterns for this repository's narrowspec.""" |
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1577 ) |
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|
1578 |
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|
1579 def narrowmatch(match=None, includeexact=False): |
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1580 """Obtain a matcher for the narrowspec.""" |
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1581 |
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1582 def setnarrowpats(newincludes, newexcludes): |
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1583 """Define the narrowspec for this repository.""" |
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1584 |
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1585 def __getitem__(changeid): |
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1586 """Try to resolve a changectx.""" |
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1587 |
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1588 def __contains__(changeid): |
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1589 """Whether a changeset exists.""" |
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1590 |
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1591 def __nonzero__(): |
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1592 """Always returns True.""" |
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1593 return True |
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1594 |
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1595 __bool__ = __nonzero__ |
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1596 |
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1597 def __len__(): |
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1598 """Returns the number of changesets in the repo.""" |
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1599 |
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1600 def __iter__(): |
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changeset
|
1601 """Iterate over revisions in the changelog.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1602 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1603 def revs(expr, *args): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1604 """Evaluate a revset. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1605 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1606 Emits revisions. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1607 """ |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1608 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1609 def set(expr, *args): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1610 """Evaluate a revset. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1611 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1612 Emits changectx instances. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1613 """ |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1614 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1615 def anyrevs(specs, user=False, localalias=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1616 """Find revisions matching one of the given revsets.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1617 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1618 def url(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1619 """Returns a string representing the location of this repo.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1620 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1621 def hook(name, throw=False, **args): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1622 """Call a hook.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1623 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1624 def tags(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1625 """Return a mapping of tag to node.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1626 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1627 def tagtype(tagname): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1628 """Return the type of a given tag.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1629 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1630 def tagslist(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1631 """Return a list of tags ordered by revision.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1632 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1633 def nodetags(node): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1634 """Return the tags associated with a node.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1635 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1636 def nodebookmarks(node): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1637 """Return the list of bookmarks pointing to the specified node.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1638 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1639 def branchmap(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1640 """Return a mapping of branch to heads in that branch.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1641 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1642 def revbranchcache(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1643 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1644 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1645 def branchtip(branchtip, ignoremissing=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1646 """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
|
1647 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1648 def lookup(key): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1649 """Resolve the node for a revision.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1650 |
37351
fdd22bf6398f
localrepo: drop "remote" argument from lookupbranch() (API)
Martin von Zweigbergk <martinvonz@google.com>
parents:
37320
diff
changeset
|
1651 def lookupbranch(key): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1652 """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
|
1653 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1654 def known(nodes): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1655 """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
|
1656 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1657 Returns a list of bools. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1658 """ |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1659 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1660 def local(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1661 """Whether the repository is local.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1662 return True |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1663 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1664 def publishing(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1665 """Whether the repository is a publishing repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1666 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1667 def cancopy(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1668 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1669 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1670 def shared(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1671 """The type of shared repository or None.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1672 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1673 def wjoin(f, *insidef): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1674 """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
|
1675 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1676 def setparents(p1, p2): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1677 """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
|
1678 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1679 def filectx(path, changeid=None, fileid=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1680 """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
|
1681 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1682 def getcwd(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1683 """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
|
1684 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1685 def pathto(f, cwd=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1686 """Obtain the relative path to a file.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1687 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1688 def adddatafilter(name, fltr): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1689 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1690 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1691 def wread(filename): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1692 """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
|
1693 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1694 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
|
1695 """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
|
1696 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1697 def wwritedata(filename, data): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1698 """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
|
1699 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1700 def currenttransaction(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1701 """Obtain the current transaction instance or None.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1702 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1703 def transaction(desc, report=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1704 """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
|
1705 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1706 def undofiles(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1707 """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
|
1708 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1709 def recover(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1710 """Roll back an interrupted transaction.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1711 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1712 def rollback(dryrun=False, force=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1713 """Undo the last transaction. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1714 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1715 DANGEROUS. |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1716 """ |
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 updatecaches(tr=None, full=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1719 """Warm repo caches.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1720 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1721 def invalidatecaches(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1722 """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
|
1723 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1724 def invalidatevolatilesets(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1725 pass |
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 def invalidatedirstate(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1728 """Invalidate the dirstate.""" |
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 invalidate(clearfilecache=False): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1731 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1732 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1733 def invalidateall(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1734 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1735 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1736 def lock(wait=True): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1737 """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
|
1738 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1739 def wlock(wait=True): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1740 """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
|
1741 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1742 def currentwlock(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1743 """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
|
1744 |
43712
f965b1027fb0
commit: drop unused "vdirs" argument from repo.checkcommitpatterns()
Martin von Zweigbergk <martinvonz@google.com>
parents:
43142
diff
changeset
|
1745 def checkcommitpatterns(wctx, match, status, fail): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1746 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1747 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1748 def commit( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1749 text=b'', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1750 user=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1751 date=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1752 match=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1753 force=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1754 editor=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1755 extra=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1756 ): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1757 """Add a new revision to the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1758 |
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
|
1759 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
|
1760 """Commit a commitctx instance to the repository.""" |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1761 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1762 def destroying(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1763 """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
|
1764 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1765 def destroyed(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1766 """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
|
1767 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1768 def status( |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
1769 node1=b'.', |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1770 node2=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1771 match=None, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1772 ignored=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1773 clean=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1774 unknown=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1775 listsubrepos=False, |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1776 ): |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1777 """Convenience method to call repo[x].status().""" |
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 addpostdsstatus(ps): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1780 pass |
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 postdsstatus(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1783 pass |
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 def clearpostdsstatus(): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1786 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1787 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1788 def heads(start=None): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1789 """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
|
1790 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1791 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
|
1792 pass |
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 branches(nodes): |
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 between(pairs): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1798 pass |
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 checkpush(pushop): |
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 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1803 prepushoutgoinghooks = interfaceutil.Attribute("""util.hooks instance.""") |
37181
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1804 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1805 def pushkey(namespace, key, old, new): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1806 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1807 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1808 def listkeys(namespace): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1809 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1810 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1811 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
|
1812 pass |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1813 |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1814 def savecommitmessage(text): |
0dfb5672f015
repository: define interface for local repositories
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33802
diff
changeset
|
1815 pass |
39764
e4e881572382
localrepo: iteratively derive local repository type
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39700
diff
changeset
|
1816 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1817 |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1818 class completelocalrepository( |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1819 ilocalrepositorymain, ilocalrepositoryfilestorage |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1820 ): |
39764
e4e881572382
localrepo: iteratively derive local repository type
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39700
diff
changeset
|
1821 """Complete interface for a local repository.""" |
40021
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1822 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
43032
diff
changeset
|
1823 |
40021
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1824 class iwireprotocolcommandcacher(interfaceutil.Interface): |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1825 """Represents a caching backend for wire protocol commands. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1826 |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1827 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
|
1828 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
|
1829 command responses. Objects handle both cache writing and reading. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1830 This interface defines how that response caching mechanism works. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1831 |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1832 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
|
1833 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
|
1834 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
|
1835 objects to an output layer. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1836 |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1837 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
|
1838 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
|
1839 write responses to a cache for subsequent use. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1840 |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1841 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
|
1842 to this interface: |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1843 |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1844 1. The server determines whether the command request is cacheable. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1845 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
|
1846 3. The cacher is activated in a context manager (``__enter__`` is called). |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1847 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
|
1848 instance's ``adjustcachekeystate()`` method so the derivation |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1849 can be influenced. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1850 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
|
1851 ``setcachekey()``. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1852 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
|
1853 the derived key in the cache. |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1854 7. If ``lookup()`` returns a hit, that cached result is used in place |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1855 of invoking the command function. ``__exit__`` is called and the instance |
c537144fdbef
wireprotov2: support response caching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40002
diff
changeset
|
1856 is discarded. |
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1857 8. The command function is invoked. |
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1858 9. ``onobject()`` is called for each object emitted by the command |
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1859 function. |
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1860 10. After the final object is seen, ``onfinished()`` is called. |
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1861 11. ``__exit__`` is called to signal the end of use of the instance. |
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1862 |
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1863 Cache *key* derivation can be influenced by the instance. |
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1864 |
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1865 Cache keys are initially derived by a deterministic representation of |
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1866 the command request. This includes the command name, arguments, protocol |
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1867 version, etc. This initial key derivation is performed by CBOR-encoding a |
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1868 data structure and feeding that output into a hasher. |
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1869 |
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1870 Instances of this interface can influence this initial key derivation |
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1871 via ``adjustcachekeystate()``. |
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1872 |
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1873 The instance is informed of the derived cache key via a call to |
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1874 ``setcachekey()``. The instance must store the key locally so it can |
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1875 be consulted on subsequent operations that may require it. |
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1876 |
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1877 When constructed, the instance has access to a callable that can be used |
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1878 for encoding response objects. This callable receives as its single |
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1879 argument an object emitted by a command function. It returns an iterable |
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1880 of bytes chunks representing the encoded object. Unless the cacher is |
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1881 caching native Python objects in memory or has a way of reconstructing |
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1882 the original Python objects, implementations typically call this function |
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1883 to produce bytes from the output objects and then store those bytes in |
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1884 the cache. When it comes time to re-emit those bytes, they are wrapped |
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1885 in a ``wireprototypes.encodedresponse`` instance to tell the output |
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1886 layer that they are pre-encoded. |
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1887 |
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1888 When receiving the objects emitted by the command function, instances |
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1889 can choose what to do with those objects. The simplest thing to do is |
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1890 re-emit the original objects. They will be forwarded to the output |
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1891 layer and will be processed as if the cacher did not exist. |
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1892 |
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1893 Implementations could also choose to not emit objects - instead locally |
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1894 buffering objects or their encoded representation. They could then emit |
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1895 a single "coalesced" object when ``onfinished()`` is called. In |
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1896 this way, the implementation would function as a filtering layer of |
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1897 sorts. |
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1898 |
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1899 When caching objects, typically the encoded form of the object will |
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1900 be stored. Keep in mind that if the original object is forwarded to |
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1901 the output layer, it will need to be encoded there as well. For large |
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1902 output, this redundant encoding could add overhead. Implementations |
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1903 could wrap the encoded object data in ``wireprototypes.encodedresponse`` |
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1904 instances to avoid this overhead. |
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1905 """ |
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1906 |
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1907 def __enter__(): |
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1908 """Marks the instance as active. |
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1909 |
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1910 Should return self. |
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1911 """ |
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1912 |
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1913 def __exit__(exctype, excvalue, exctb): |
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1914 """Called when cacher is no longer used. |
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1915 |
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1916 This can be used by implementations to perform cleanup actions (e.g. |
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1917 disconnecting network sockets, aborting a partially cached response. |
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1918 """ |
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1919 |
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1920 def adjustcachekeystate(state): |
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1921 """Influences cache key derivation by adjusting state to derive key. |
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1922 |
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1923 A dict defining the state used to derive the cache key is passed. |
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1924 |
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1925 Implementations can modify this dict to record additional state that |
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1926 is wanted to influence key derivation. |
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1927 |
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1928 Implementations are *highly* encouraged to not modify or delete |
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1929 existing keys. |
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1930 """ |
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1931 |
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1932 def setcachekey(key): |
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1933 """Record the derived cache key for this request. |
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1934 |
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1935 Instances may mutate the key for internal usage, as desired. e.g. |
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1936 instances may wish to prepend the repo name, introduce path |
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1937 components for filesystem or URL addressing, etc. Behavior is up to |
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1938 the cache. |
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1939 |
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1940 Returns a bool indicating if the request is cacheable by this |
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1941 instance. |
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1942 """ |
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1943 |
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1944 def lookup(): |
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1945 """Attempt to resolve an entry in the cache. |
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1946 |
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1947 The instance is instructed to look for the cache key that it was |
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1948 informed about via the call to ``setcachekey()``. |
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1949 |
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1950 If there's no cache hit or the cacher doesn't wish to use the cached |
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1951 entry, ``None`` should be returned. |
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1952 |
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1953 Else, a dict defining the cached result should be returned. The |
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1954 dict may have the following keys: |
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1955 |
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1956 objs |
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1957 An iterable of objects that should be sent to the client. That |
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1958 iterable of objects is expected to be what the command function |
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1959 would return if invoked or an equivalent representation thereof. |
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1960 """ |
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1961 |
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1962 def onobject(obj): |
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1963 """Called when a new object is emitted from the command function. |
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1964 |
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1965 Receives as its argument the object that was emitted from the |
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1966 command function. |
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1967 |
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1968 This method returns an iterator of objects to forward to the output |
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1969 layer. The easiest implementation is a generator that just |
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1970 ``yield obj``. |
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1971 """ |
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1972 |
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1973 def onfinished(): |
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1974 """Called after all objects have been emitted from the command function. |
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1975 |
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1976 Implementations should return an iterator of objects to forward to |
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1977 the output layer. |
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1978 |
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1979 This method can be a generator. |
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1980 """ |