annotate hgext/remotefilelog/remotefilectx.py @ 48875:6000f5b25c9b

py2: remove simple from __future__ statements These were needed for Python 2 support. Now that our linter no longer mandates these, we can start deleting them. Differential Revision: https://phab.mercurial-scm.org/D12254
author Gregory Szorc <gregory.szorc@gmail.com>
date Thu, 03 Mar 2022 17:34:00 +0100
parents d55b71393907
children 4704c4c79f21
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1 # remotefilectx.py - filectx/workingfilectx implementations for remotefilelog
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2 #
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3 # Copyright 2013 Facebook, Inc.
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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 import collections
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9 import time
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10
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11 from mercurial.node import bin, hex, nullrev
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12 from mercurial import (
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13 ancestor,
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14 context,
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15 error,
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16 phases,
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17 util,
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18 )
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19 from . import shallowutil
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20
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21 propertycache = util.propertycache
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22 FASTLOG_TIMEOUT_IN_SECS = 0.5
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23
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24
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25 class remotefilectx(context.filectx):
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26 def __init__(
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27 self,
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28 repo,
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29 path,
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30 changeid=None,
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31 fileid=None,
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32 filelog=None,
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33 changectx=None,
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34 ancestormap=None,
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35 ):
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36 if fileid == nullrev:
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37 fileid = repo.nullid
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38 if fileid and len(fileid) == 40:
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39 fileid = bin(fileid)
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40 super(remotefilectx, self).__init__(
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41 repo, path, changeid, fileid, filelog, changectx
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42 )
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43 self._ancestormap = ancestormap
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44
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45 def size(self):
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46 return self._filelog.size(self._filenode)
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47
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48 @propertycache
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49 def _changeid(self):
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50 if '_changeid' in self.__dict__:
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51 return self._changeid
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52 elif '_changectx' in self.__dict__:
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53 return self._changectx.rev()
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54 elif '_descendantrev' in self.__dict__:
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55 # this file context was created from a revision with a known
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56 # descendant, we can (lazily) correct for linkrev aliases
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57 linknode = self._adjustlinknode(
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58 self._path, self._filelog, self._filenode, self._descendantrev
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59 )
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60 return self._repo.unfiltered().changelog.rev(linknode)
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61 else:
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62 return self.linkrev()
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63
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64 def filectx(self, fileid, changeid=None):
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65 """opens an arbitrary revision of the file without
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66 opening a new filelog"""
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67 return remotefilectx(
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68 self._repo,
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69 self._path,
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70 fileid=fileid,
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71 filelog=self._filelog,
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72 changeid=changeid,
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73 )
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74
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75 def linkrev(self):
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76 return self._linkrev
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77
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78 @propertycache
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79 def _linkrev(self):
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80 if self._filenode == self._repo.nullid:
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81 return nullrev
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82
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83 ancestormap = self.ancestormap()
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84 p1, p2, linknode, copyfrom = ancestormap[self._filenode]
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85 rev = self._repo.changelog.index.get_rev(linknode)
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86 if rev is not None:
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87 return rev
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88
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89 # Search all commits for the appropriate linkrev (slow, but uncommon)
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90 path = self._path
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91 fileid = self._filenode
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92 cl = self._repo.unfiltered().changelog
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93 mfl = self._repo.manifestlog
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94
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95 for rev in range(len(cl) - 1, 0, -1):
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96 node = cl.node(rev)
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97 data = cl.read(
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98 node
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99 ) # get changeset data (we avoid object creation)
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100 if path in data[3]: # checking the 'files' field.
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101 # The file has been touched, check if the hash is what we're
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102 # looking for.
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103 if fileid == mfl[data[0]].readfast().get(path):
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104 return rev
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105
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106 # Couldn't find the linkrev. This should generally not happen, and will
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107 # likely cause a crash.
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108 return None
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109
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110 def introrev(self):
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111 """return the rev of the changeset which introduced this file revision
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112
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113 This method is different from linkrev because it take into account the
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114 changeset the filectx was created from. It ensures the returned
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115 revision is one of its ancestors. This prevents bugs from
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116 'linkrev-shadowing' when a file revision is used by multiple
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117 changesets.
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118 """
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119 lkr = self.linkrev()
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120 attrs = vars(self)
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121 noctx = not ('_changeid' in attrs or r'_changectx' in attrs)
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122 if noctx or self.rev() == lkr:
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123 return lkr
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124 linknode = self._adjustlinknode(
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125 self._path,
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126 self._filelog,
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127 self._filenode,
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128 self.rev(),
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129 inclusive=True,
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130 )
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131 return self._repo.changelog.rev(linknode)
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132
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133 def renamed(self):
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134 """check if file was actually renamed in this changeset revision
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135
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136 If rename logged in file revision, we report copy for changeset only
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137 if file revisions linkrev points back to the changeset in question
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138 or both changeset parents contain different file revisions.
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139 """
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140 ancestormap = self.ancestormap()
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141
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142 p1, p2, linknode, copyfrom = ancestormap[self._filenode]
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143 if not copyfrom:
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144 return None
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145
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146 renamed = (copyfrom, p1)
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147 if self.rev() == self.linkrev():
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148 return renamed
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149
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150 name = self.path()
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151 fnode = self._filenode
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152 for p in self._changectx.parents():
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153 try:
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154 if fnode == p.filenode(name):
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155 return None
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156 except error.LookupError:
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157 pass
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158 return renamed
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159
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160 def copysource(self):
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161 copy = self.renamed()
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162 return copy and copy[0]
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163
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164 def ancestormap(self):
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165 if not self._ancestormap:
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166 self._ancestormap = self.filelog().ancestormap(self._filenode)
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167
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168 return self._ancestormap
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169
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170 def parents(self):
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171 repo = self._repo
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172 ancestormap = self.ancestormap()
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173
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174 p1, p2, linknode, copyfrom = ancestormap[self._filenode]
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175 results = []
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176 if p1 != repo.nullid:
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177 path = copyfrom or self._path
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178 flog = repo.file(path)
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179 p1ctx = remotefilectx(
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180 repo, path, fileid=p1, filelog=flog, ancestormap=ancestormap
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181 )
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182 p1ctx._descendantrev = self.rev()
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183 results.append(p1ctx)
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184
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185 if p2 != repo.nullid:
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186 path = self._path
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187 flog = repo.file(path)
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188 p2ctx = remotefilectx(
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189 repo, path, fileid=p2, filelog=flog, ancestormap=ancestormap
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190 )
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191 p2ctx._descendantrev = self.rev()
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192 results.append(p2ctx)
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193
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194 return results
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195
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196 def _nodefromancrev(self, ancrev, cl, mfl, path, fnode):
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197 """returns the node for <path> in <ancrev> if content matches <fnode>"""
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198 ancctx = cl.read(ancrev) # This avoids object creation.
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199 manifestnode, files = ancctx[0], ancctx[3]
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200 # If the file was touched in this ancestor, and the content is similar
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201 # to the one we are searching for.
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202 if path in files and fnode == mfl[manifestnode].readfast().get(path):
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parents:
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203 return cl.node(ancrev)
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204 return None
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205
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206 def _adjustlinknode(self, path, filelog, fnode, srcrev, inclusive=False):
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207 """return the first ancestor of <srcrev> introducing <fnode>
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208
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diff changeset
209 If the linkrev of the file revision does not point to an ancestor of
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diff changeset
210 srcrev, we'll walk down the ancestors until we find one introducing
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parents:
diff changeset
211 this file revision.
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diff changeset
212
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diff changeset
213 :repo: a localrepository object (used to access changelog and manifest)
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214 :path: the file path
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parents:
diff changeset
215 :fnode: the nodeid of the file revision
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diff changeset
216 :filelog: the filelog of this path
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diff changeset
217 :srcrev: the changeset revision we search ancestors from
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diff changeset
218 :inclusive: if true, the src revision will also be checked
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219
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diff changeset
220 Note: This is based on adjustlinkrev in core, but it's quite different.
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221
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diff changeset
222 adjustlinkrev depends on the fact that the linkrev is the bottom most
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diff changeset
223 node, and uses that as a stopping point for the ancestor traversal. We
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224 can't do that here because the linknode is not guaranteed to be the
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parents:
diff changeset
225 bottom most one.
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226
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diff changeset
227 In our code here, we actually know what a bunch of potential ancestor
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diff changeset
228 linknodes are, so instead of stopping the cheap-ancestor-traversal when
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diff changeset
229 we get to a linkrev, we stop when we see any of the known linknodes.
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230 """
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231 repo = self._repo
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diff changeset
232 cl = repo.unfiltered().changelog
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diff changeset
233 mfl = repo.manifestlog
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diff changeset
234 ancestormap = self.ancestormap()
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diff changeset
235 linknode = ancestormap[fnode][2]
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236
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diff changeset
237 if srcrev is None:
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parents:
diff changeset
238 # wctx case, used by workingfilectx during mergecopy
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diff changeset
239 revs = [p.rev() for p in self._repo[None].parents()]
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240 inclusive = True # we skipped the real (revless) source
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241 else:
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diff changeset
242 revs = [srcrev]
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243
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parents:
diff changeset
244 if self._verifylinknode(revs, linknode):
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245 return linknode
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246
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diff changeset
247 commonlogkwargs = {
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248 'revs': b' '.join([hex(cl.node(rev)) for rev in revs]),
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249 'fnode': hex(fnode),
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250 'filepath': path,
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251 'user': shallowutil.getusername(repo.ui),
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diff changeset
252 'reponame': shallowutil.getreponame(repo.ui),
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253 }
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diff changeset
254
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255 repo.ui.log(b'linkrevfixup', b'adjusting linknode\n', **commonlogkwargs)
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256
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257 pc = repo._phasecache
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258 seenpublic = False
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259 iteranc = cl.ancestors(revs, inclusive=inclusive)
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260 for ancrev in iteranc:
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261 # First, check locally-available history.
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262 lnode = self._nodefromancrev(ancrev, cl, mfl, path, fnode)
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263 if lnode is not None:
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264 return lnode
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265
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266 # adjusting linknode can be super-slow. To mitigate the issue
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267 # we use two heuristics: calling fastlog and forcing remotefilelog
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268 # prefetch
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269 if not seenpublic and pc.phase(repo, ancrev) == phases.public:
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270 # TODO: there used to be a codepath to fetch linknodes
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271 # from a server as a fast path, but it appeared to
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272 # depend on an API FB added to their phabricator.
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273 lnode = self._forceprefetch(
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274 repo, path, fnode, revs, commonlogkwargs
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275 )
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276 if lnode:
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277 return lnode
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278 seenpublic = True
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279
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280 return linknode
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281
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282 def _forceprefetch(self, repo, path, fnode, revs, commonlogkwargs):
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283 # This next part is super non-obvious, so big comment block time!
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284 #
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285 # It is possible to get extremely bad performance here when a fairly
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286 # common set of circumstances occur when this extension is combined
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287 # with a server-side commit rewriting extension like pushrebase.
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288 #
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289 # First, an engineer creates Commit A and pushes it to the server.
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290 # While the server's data structure will have the correct linkrev
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291 # for the files touched in Commit A, the client will have the
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292 # linkrev of the local commit, which is "invalid" because it's not
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293 # an ancestor of the main line of development.
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294 #
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295 # The client will never download the remotefilelog with the correct
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296 # linkrev as long as nobody else touches that file, since the file
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297 # data and history hasn't changed since Commit A.
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298 #
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299 # After a long time (or a short time in a heavily used repo), if the
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300 # same engineer returns to change the same file, some commands --
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301 # such as amends of commits with file moves, logs, diffs, etc --
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302 # can trigger this _adjustlinknode code. In those cases, finding
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303 # the correct rev can become quite expensive, as the correct
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304 # revision is far back in history and we need to walk back through
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305 # history to find it.
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306 #
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307 # In order to improve this situation, we force a prefetch of the
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308 # remotefilelog data blob for the file we were called on. We do this
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309 # at most once, when we first see a public commit in the history we
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310 # are traversing.
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311 #
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312 # Forcing the prefetch means we will download the remote blob even
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313 # if we have the "correct" blob in the local store. Since the union
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314 # store checks the remote store first, this means we are much more
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315 # likely to get the correct linkrev at this point.
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316 #
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317 # In rare circumstances (such as the server having a suboptimal
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318 # linkrev for our use case), we will fall back to the old slow path.
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319 #
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320 # We may want to add additional heuristics here in the future if
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321 # the slow path is used too much. One promising possibility is using
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322 # obsolescence markers to find a more-likely-correct linkrev.
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323
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324 logmsg = b''
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325 start = time.time()
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326 try:
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327 repo.fileservice.prefetch([(path, hex(fnode))], force=True)
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328
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329 # Now that we've downloaded a new blob from the server,
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330 # we need to rebuild the ancestor map to recompute the
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331 # linknodes.
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332 self._ancestormap = None
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333 linknode = self.ancestormap()[fnode][2] # 2 is linknode
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334 if self._verifylinknode(revs, linknode):
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335 logmsg = b'remotefilelog prefetching succeeded'
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336 return linknode
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337 logmsg = b'remotefilelog prefetching not found'
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338 return None
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339 except Exception as e:
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340 logmsg = b'remotefilelog prefetching failed (%s)' % e
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341 return None
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342 finally:
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343 elapsed = time.time() - start
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344 repo.ui.log(
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345 b'linkrevfixup',
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346 logmsg + b'\n',
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347 elapsed=elapsed * 1000,
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348 **commonlogkwargs
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349 )
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350
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351 def _verifylinknode(self, revs, linknode):
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352 """
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353 Check if a linknode is correct one for the current history.
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354
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355 That is, return True if the linkrev is the ancestor of any of the
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356 passed in revs, otherwise return False.
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357
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358 `revs` is a list that usually has one element -- usually the wdir parent
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359 or the user-passed rev we're looking back from. It may contain two revs
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360 when there is a merge going on, or zero revs when a root node with no
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361 parents is being created.
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362 """
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363 if not revs:
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364 return False
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365 try:
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366 # Use the C fastpath to check if the given linknode is correct.
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367 cl = self._repo.unfiltered().changelog
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368 return any(cl.isancestor(linknode, cl.node(r)) for r in revs)
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369 except error.LookupError:
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370 # The linknode read from the blob may have been stripped or
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371 # otherwise not present in the repository anymore. Do not fail hard
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372 # in this case. Instead, return false and continue the search for
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373 # the correct linknode.
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374 return False
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375
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376 def ancestors(self, followfirst=False):
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parents:
diff changeset
377 ancestors = []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
378 queue = collections.deque((self,))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
379 seen = set()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
380 while queue:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
381 current = queue.pop()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
382 if current.filenode() in seen:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
383 continue
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
384 seen.add(current.filenode())
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
385
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
386 ancestors.append(current)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
387
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
388 parents = current.parents()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
389 first = True
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
390 for p in parents:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
391 if first or not followfirst:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
392 queue.append(p)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
393 first = False
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
394
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
395 # Remove self
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
396 ancestors.pop(0)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
397
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
398 # Sort by linkrev
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
399 # The copy tracing algorithm depends on these coming out in order
43076
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Augie Fackler <augie@google.com>
parents: 41768
diff changeset
400 ancestors = sorted(ancestors, reverse=True, key=lambda x: x.linkrev())
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
401
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
402 for ancestor in ancestors:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
403 yield ancestor
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
404
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
405 def ancestor(self, fc2, actx):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
406 # the easy case: no (relevant) renames
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
407 if fc2.path() == self.path() and self.path() in actx:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
408 return actx[self.path()]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
409
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
410 # the next easiest cases: unambiguous predecessor (name trumps
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
411 # history)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
412 if self.path() in actx and fc2.path() not in actx:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
413 return actx[self.path()]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
414 if fc2.path() in actx and self.path() not in actx:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
415 return actx[fc2.path()]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
416
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
417 # do a full traversal
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
418 amap = self.ancestormap()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
419 bmap = fc2.ancestormap()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
420
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
421 def parents(x):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
422 f, n = x
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
423 p = amap.get(n) or bmap.get(n)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
424 if not p:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
425 return []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
426
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
427 return [(p[3] or f, p[0]), (f, p[1])]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
428
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
429 a = (self.path(), self.filenode())
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
430 b = (fc2.path(), fc2.filenode())
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
431 result = ancestor.genericancestor(a, b, parents)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
432 if result:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
433 f, n = result
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
434 r = remotefilectx(self._repo, f, fileid=n, ancestormap=amap)
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
435 return r
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
436
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
437 return None
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
438
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
439 def annotate(self, *args, **kwargs):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
440 introctx = self
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43077
diff changeset
441 prefetchskip = kwargs.pop('prefetchskip', None)
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
442 if prefetchskip:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
443 # use introrev so prefetchskip can be accurately tested
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
444 introrev = self.introrev()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
445 if self.rev() != introrev:
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
446 introctx = remotefilectx(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
447 self._repo,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
448 self._path,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
449 changeid=introrev,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
450 fileid=self._filenode,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
451 filelog=self._filelog,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
452 ancestormap=self._ancestormap,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
453 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
454
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
455 # like self.ancestors, but append to "fetch" and skip visiting parents
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
456 # of nodes in "prefetchskip".
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
457 fetch = []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
458 seen = set()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
459 queue = collections.deque((introctx,))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
460 seen.add(introctx.node())
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
461 while queue:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
462 current = queue.pop()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
463 if current.filenode() != self.filenode():
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
464 # this is a "joint point". fastannotate needs contents of
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
465 # "joint point"s to calculate diffs for side branches.
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
466 fetch.append((current.path(), hex(current.filenode())))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
467 if prefetchskip and current in prefetchskip:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
468 continue
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
469 for parent in current.parents():
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
470 if parent.node() not in seen:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
471 seen.add(parent.node())
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
472 queue.append(parent)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
473
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
474 self._repo.ui.debug(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
475 b'remotefilelog: prefetching %d files '
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
476 b'for annotate\n' % len(fetch)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
477 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
478 if fetch:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
479 self._repo.fileservice.prefetch(fetch)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
480 return super(remotefilectx, self).annotate(*args, **kwargs)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
481
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
482 # Return empty set so that the hg serve and thg don't stack trace
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
483 def children(self):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
484 return []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
485
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
486
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
487 class remoteworkingfilectx(context.workingfilectx, remotefilectx):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
488 def __init__(self, repo, path, filelog=None, workingctx=None):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
489 self._ancestormap = None
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
490 super(remoteworkingfilectx, self).__init__(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
491 repo, path, filelog, workingctx
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41768
diff changeset
492 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
493
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
494 def parents(self):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
495 return remotefilectx.parents(self)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
496
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
497 def ancestormap(self):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
498 if not self._ancestormap:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
499 path = self._path
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
500 pcl = self._changectx._parents
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
501 renamed = self.renamed()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
502
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
503 if renamed:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
504 p1 = renamed
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
505 else:
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
506 p1 = (path, pcl[0]._manifest.get(path, self._repo.nullid))
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
507
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
508 p2 = (path, self._repo.nullid)
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
509 if len(pcl) > 1:
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
510 p2 = (path, pcl[1]._manifest.get(path, self._repo.nullid))
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
511
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
512 m = {}
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
513 if p1[1] != self._repo.nullid:
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
514 p1ctx = self._repo.filectx(p1[0], fileid=p1[1])
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
515 m.update(p1ctx.filelog().ancestormap(p1[1]))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
516
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
517 if p2[1] != self._repo.nullid:
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
518 p2ctx = self._repo.filectx(p2[0], fileid=p2[1])
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
519 m.update(p2ctx.filelog().ancestormap(p2[1]))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
520
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
521 copyfrom = b''
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
522 if renamed:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
523 copyfrom = renamed[0]
47012
d55b71393907 node: replace nullid and friends with nodeconstants class
Joerg Sonnenberger <joerg@bec.de>
parents: 45942
diff changeset
524 m[None] = (p1[1], p2[1], self._repo.nullid, copyfrom)
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
525 self._ancestormap = m
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
526
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
527 return self._ancestormap