annotate hgext/remotefilelog/basestore.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 e972077600e5
children f254fc73d956
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1 import errno
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2 import os
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3 import shutil
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4 import stat
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5 import time
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6
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7 from mercurial.i18n import _
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8 from mercurial.node import bin, hex
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9 from mercurial.pycompat import open
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10 from mercurial import (
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11 error,
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12 pycompat,
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13 util,
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14 )
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15 from mercurial.utils import hashutil
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16 from . import (
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17 constants,
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18 shallowutil,
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19 )
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20
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21
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22 class basestore(object):
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23 def __init__(self, repo, path, reponame, shared=False):
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24 """Creates a remotefilelog store object for the given repo name.
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25
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26 `path` - The file path where this store keeps its data
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27 `reponame` - The name of the repo. This is used to partition data from
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28 many repos.
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29 `shared` - True if this store is a shared cache of data from the central
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30 server, for many repos on this machine. False means this store is for
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31 the local data for one repo.
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32 """
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33 self.repo = repo
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34 self.ui = repo.ui
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35 self._path = path
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36 self._reponame = reponame
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37 self._shared = shared
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38 self._uid = os.getuid() if not pycompat.iswindows else None
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39
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40 self._validatecachelog = self.ui.config(
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41 b"remotefilelog", b"validatecachelog"
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42 )
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43 self._validatecache = self.ui.config(
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44 b"remotefilelog", b"validatecache", b'on'
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45 )
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46 if self._validatecache not in (b'on', b'strict', b'off'):
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47 self._validatecache = b'on'
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48 if self._validatecache == b'off':
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49 self._validatecache = False
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50
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51 if shared:
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52 shallowutil.mkstickygroupdir(self.ui, path)
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53
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54 def getmissing(self, keys):
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55 missing = []
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56 for name, node in keys:
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57 filepath = self._getfilepath(name, node)
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58 exists = os.path.exists(filepath)
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59 if (
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60 exists
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61 and self._validatecache == b'strict'
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62 and not self._validatekey(filepath, b'contains')
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63 ):
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64 exists = False
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65 if not exists:
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66 missing.append((name, node))
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67
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68 return missing
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69
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70 # BELOW THIS ARE IMPLEMENTATIONS OF REPACK SOURCE
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71
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72 def markledger(self, ledger, options=None):
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73 if options and options.get(constants.OPTION_PACKSONLY):
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74 return
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75 if self._shared:
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76 for filename, nodes in self._getfiles():
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77 for node in nodes:
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78 ledger.markdataentry(self, filename, node)
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79 ledger.markhistoryentry(self, filename, node)
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80
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81 def cleanup(self, ledger):
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82 ui = self.ui
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83 entries = ledger.sources.get(self, [])
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84 count = 0
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85 progress = ui.makeprogress(
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86 _(b"cleaning up"), unit=b"files", total=len(entries)
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87 )
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88 for entry in entries:
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89 if entry.gced or (entry.datarepacked and entry.historyrepacked):
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90 progress.update(count)
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91 path = self._getfilepath(entry.filename, entry.node)
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92 util.tryunlink(path)
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93 count += 1
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94 progress.complete()
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95
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96 # Clean up the repo cache directory.
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97 self._cleanupdirectory(self._getrepocachepath())
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98
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99 # BELOW THIS ARE NON-STANDARD APIS
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100
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101 def _cleanupdirectory(self, rootdir):
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102 """Removes the empty directories and unnecessary files within the root
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103 directory recursively. Note that this method does not remove the root
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104 directory itself."""
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105
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106 oldfiles = set()
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107 otherfiles = set()
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108 # osutil.listdir returns stat information which saves some rmdir/listdir
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109 # syscalls.
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110 for name, mode in util.osutil.listdir(rootdir):
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111 if stat.S_ISDIR(mode):
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112 dirpath = os.path.join(rootdir, name)
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113 self._cleanupdirectory(dirpath)
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114
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115 # Now that the directory specified by dirpath is potentially
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116 # empty, try and remove it.
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117 try:
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118 os.rmdir(dirpath)
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119 except OSError:
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120 pass
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121
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122 elif stat.S_ISREG(mode):
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123 if name.endswith(b'_old'):
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124 oldfiles.add(name[:-4])
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125 else:
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diff changeset
126 otherfiles.add(name)
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127
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parents:
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128 # Remove the files which end with suffix '_old' and have no
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parents:
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129 # corresponding file without the suffix '_old'. See addremotefilelognode
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parents:
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130 # method for the generation/purpose of files with '_old' suffix.
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131 for filename in oldfiles - otherfiles:
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132 filepath = os.path.join(rootdir, filename + b'_old')
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133 util.tryunlink(filepath)
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134
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135 def _getfiles(self):
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136 """Return a list of (filename, [node,...]) for all the revisions that
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137 exist in the store.
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138
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139 This is useful for obtaining a list of all the contents of the store
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140 when performing a repack to another store, since the store API requires
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parents:
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141 name+node keys and not namehash+node keys.
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142 """
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143 existing = {}
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144 for filenamehash, node in self._listkeys():
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parents:
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145 existing.setdefault(filenamehash, []).append(node)
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146
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147 filenamemap = self._resolvefilenames(existing.keys())
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148
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149 for filename, sha in pycompat.iteritems(filenamemap):
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150 yield (filename, existing[sha])
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151
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152 def _resolvefilenames(self, hashes):
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153 """Given a list of filename hashes that are present in the
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154 remotefilelog store, return a mapping from filename->hash.
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155
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156 This is useful when converting remotefilelog blobs into other storage
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parents:
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157 formats.
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158 """
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159 if not hashes:
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160 return {}
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161
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162 filenames = {}
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parents:
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163 missingfilename = set(hashes)
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164
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165 # Start with a full manifest, since it'll cover the majority of files
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166 for filename in self.repo[b'tip'].manifest():
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167 sha = hashutil.sha1(filename).digest()
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168 if sha in missingfilename:
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169 filenames[filename] = sha
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parents:
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170 missingfilename.discard(sha)
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171
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parents:
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172 # Scan the changelog until we've found every file name
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parents:
diff changeset
173 cl = self.repo.unfiltered().changelog
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parents:
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174 for rev in pycompat.xrange(len(cl) - 1, -1, -1):
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parents:
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175 if not missingfilename:
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parents:
diff changeset
176 break
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diff changeset
177 files = cl.readfiles(cl.node(rev))
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178 for filename in files:
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diff changeset
179 sha = hashutil.sha1(filename).digest()
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180 if sha in missingfilename:
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parents:
diff changeset
181 filenames[filename] = sha
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parents:
diff changeset
182 missingfilename.discard(sha)
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parents:
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183
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parents:
diff changeset
184 return filenames
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parents:
diff changeset
185
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parents:
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186 def _getrepocachepath(self):
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187 return (
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188 os.path.join(self._path, self._reponame)
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189 if self._shared
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190 else self._path
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parents: 41501
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191 )
40495
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192
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Augie Fackler <augie@google.com>
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diff changeset
193 def _listkeys(self):
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parents:
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194 """List all the remotefilelog keys that exist in the store.
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parents:
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195
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diff changeset
196 Returns a iterator of (filename hash, filecontent hash) tuples.
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parents:
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197 """
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Augie Fackler <augie@google.com>
parents:
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198
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Augie Fackler <augie@google.com>
parents:
diff changeset
199 for root, dirs, files in os.walk(self._getrepocachepath()):
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parents:
diff changeset
200 for filename in files:
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Augie Fackler <augie@google.com>
parents:
diff changeset
201 if len(filename) != 40:
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Augie Fackler <augie@google.com>
parents:
diff changeset
202 continue
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Augie Fackler <augie@google.com>
parents:
diff changeset
203 node = filename
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Augie Fackler <augie@google.com>
parents:
diff changeset
204 if self._shared:
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Augie Fackler <augie@google.com>
parents:
diff changeset
205 # .../1a/85ffda..be21
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Augie Fackler <augie@google.com>
parents:
diff changeset
206 filenamehash = root[-41:-39] + root[-38:]
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Augie Fackler <augie@google.com>
parents:
diff changeset
207 else:
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Augie Fackler <augie@google.com>
parents:
diff changeset
208 filenamehash = root[-40:]
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Augie Fackler <augie@google.com>
parents:
diff changeset
209 yield (bin(filenamehash), bin(node))
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Augie Fackler <augie@google.com>
parents:
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210
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Augie Fackler <augie@google.com>
parents:
diff changeset
211 def _getfilepath(self, name, node):
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Augie Fackler <augie@google.com>
parents:
diff changeset
212 node = hex(node)
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Augie Fackler <augie@google.com>
parents:
diff changeset
213 if self._shared:
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Augie Fackler <augie@google.com>
parents:
diff changeset
214 key = shallowutil.getcachekey(self._reponame, name, node)
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parents:
diff changeset
215 else:
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Augie Fackler <augie@google.com>
parents:
diff changeset
216 key = shallowutil.getlocalkey(name, node)
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parents:
diff changeset
217
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Augie Fackler <augie@google.com>
parents:
diff changeset
218 return os.path.join(self._path, key)
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Augie Fackler <augie@google.com>
parents:
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219
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Augie Fackler <augie@google.com>
parents:
diff changeset
220 def _getdata(self, name, node):
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parents:
diff changeset
221 filepath = self._getfilepath(name, node)
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Augie Fackler <augie@google.com>
parents:
diff changeset
222 try:
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Augie Fackler <augie@google.com>
parents:
diff changeset
223 data = shallowutil.readfile(filepath)
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Augie Fackler <augie@google.com>
parents:
diff changeset
224 if self._validatecache and not self._validatedata(data, filepath):
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Augie Fackler <augie@google.com>
parents:
diff changeset
225 if self._validatecachelog:
44101
25097b4d2c6f remotefilelog: fix opening validatecachelog in text mode
Inada Naoki <songofacandy@gmail.com>
parents: 44062
diff changeset
226 with open(self._validatecachelog, b'ab+') as f:
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parents: 43076
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227 f.write(b"corrupt %s during read\n" % filepath)
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228 os.rename(filepath, filepath + b".corrupt")
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diff changeset
229 raise KeyError(b"corrupt local cache file %s" % filepath)
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parents:
diff changeset
230 except IOError:
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diff changeset
231 raise KeyError(
43077
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diff changeset
232 b"no file found at %s for %s:%s" % (filepath, name, hex(node))
43076
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parents: 41501
diff changeset
233 )
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
234
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Augie Fackler <augie@google.com>
parents:
diff changeset
235 return data
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Augie Fackler <augie@google.com>
parents:
diff changeset
236
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Augie Fackler <augie@google.com>
parents:
diff changeset
237 def addremotefilelognode(self, name, node, data):
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parents:
diff changeset
238 filepath = self._getfilepath(name, node)
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Augie Fackler <augie@google.com>
parents:
diff changeset
239
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Augie Fackler <augie@google.com>
parents:
diff changeset
240 oldumask = os.umask(0o002)
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Augie Fackler <augie@google.com>
parents:
diff changeset
241 try:
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Augie Fackler <augie@google.com>
parents:
diff changeset
242 # if this node already exists, save the old version for
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Augie Fackler <augie@google.com>
parents:
diff changeset
243 # recovery/debugging purposes.
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Augie Fackler <augie@google.com>
parents:
diff changeset
244 if os.path.exists(filepath):
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
245 newfilename = filepath + b'_old'
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
246 # newfilename can be read-only and shutil.copy will fail.
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Augie Fackler <augie@google.com>
parents:
diff changeset
247 # Delete newfilename to avoid it
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Augie Fackler <augie@google.com>
parents:
diff changeset
248 if os.path.exists(newfilename):
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parents:
diff changeset
249 shallowutil.unlinkfile(newfilename)
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parents:
diff changeset
250 shutil.copy(filepath, newfilename)
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parents:
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251
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parents:
diff changeset
252 shallowutil.mkstickygroupdir(self.ui, os.path.dirname(filepath))
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parents:
diff changeset
253 shallowutil.writefile(filepath, data, readonly=True)
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parents:
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254
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Augie Fackler <augie@google.com>
parents:
diff changeset
255 if self._validatecache:
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256 if not self._validatekey(filepath, b'write'):
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257 raise error.Abort(
43077
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diff changeset
258 _(b"local cache write was corrupted %s") % filepath
43076
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Augie Fackler <augie@google.com>
parents: 41501
diff changeset
259 )
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
260 finally:
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Augie Fackler <augie@google.com>
parents:
diff changeset
261 os.umask(oldumask)
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parents:
diff changeset
262
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Augie Fackler <augie@google.com>
parents:
diff changeset
263 def markrepo(self, path):
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Augie Fackler <augie@google.com>
parents:
diff changeset
264 """Call this to add the given repo path to the store's list of
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Augie Fackler <augie@google.com>
parents:
diff changeset
265 repositories that are using it. This is useful later when doing garbage
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Augie Fackler <augie@google.com>
parents:
diff changeset
266 collection, since it allows us to insecpt the repos to see what nodes
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Augie Fackler <augie@google.com>
parents:
diff changeset
267 they want to be kept alive in the store.
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parents:
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268 """
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269 repospath = os.path.join(self._path, b"repos")
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270 with open(repospath, b'ab') as reposfile:
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271 reposfile.write(os.path.dirname(path) + b"\n")
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272
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parents:
diff changeset
273 repospathstat = os.stat(repospath)
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Augie Fackler <augie@google.com>
parents:
diff changeset
274 if repospathstat.st_uid == self._uid:
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Augie Fackler <augie@google.com>
parents:
diff changeset
275 os.chmod(repospath, 0o0664)
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Augie Fackler <augie@google.com>
parents:
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276
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277 def _validatekey(self, path, action):
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278 with open(path, b'rb') as f:
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279 data = f.read()
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parents:
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280
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parents:
diff changeset
281 if self._validatedata(data, path):
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parents:
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282 return True
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Augie Fackler <augie@google.com>
parents:
diff changeset
283
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parents:
diff changeset
284 if self._validatecachelog:
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285 with open(self._validatecachelog, b'ab+') as f:
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286 f.write(b"corrupt %s during %s\n" % (path, action))
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parents:
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287
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288 os.rename(path, path + b".corrupt")
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parents:
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289 return False
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parents:
diff changeset
290
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parents:
diff changeset
291 def _validatedata(self, data, path):
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parents:
diff changeset
292 try:
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Augie Fackler <augie@google.com>
parents:
diff changeset
293 if len(data) > 0:
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parents:
diff changeset
294 # see remotefilelogserver.createfileblob for the format
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Augie Fackler <augie@google.com>
parents:
diff changeset
295 offset, size, flags = shallowutil.parsesizeflags(data)
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Augie Fackler <augie@google.com>
parents:
diff changeset
296 if len(data) <= size:
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Augie Fackler <augie@google.com>
parents:
diff changeset
297 # it is truncated
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Augie Fackler <augie@google.com>
parents:
diff changeset
298 return False
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Augie Fackler <augie@google.com>
parents:
diff changeset
299
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Augie Fackler <augie@google.com>
parents:
diff changeset
300 # extract the node from the metadata
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parents:
diff changeset
301 offset += size
43076
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Augie Fackler <augie@google.com>
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diff changeset
302 datanode = data[offset : offset + 20]
40495
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parents:
diff changeset
303
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Augie Fackler <augie@google.com>
parents:
diff changeset
304 # and compare against the path
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Augie Fackler <augie@google.com>
parents:
diff changeset
305 if os.path.basename(path) == hex(datanode):
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Augie Fackler <augie@google.com>
parents:
diff changeset
306 # Content matches the intended path
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Augie Fackler <augie@google.com>
parents:
diff changeset
307 return True
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Augie Fackler <augie@google.com>
parents:
diff changeset
308 return False
47549
e972077600e5 remotefilelog: stop using RuntimeError for control flow
Augie Fackler <augie@google.com>
parents: 45942
diff changeset
309 except (ValueError, shallowutil.BadRemotefilelogHeader):
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
310 pass
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Augie Fackler <augie@google.com>
parents:
diff changeset
311
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
312 return False
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
313
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
314 def gc(self, keepkeys):
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Augie Fackler <augie@google.com>
parents:
diff changeset
315 ui = self.ui
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Augie Fackler <augie@google.com>
parents:
diff changeset
316 cachepath = self._path
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
317
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Augie Fackler <augie@google.com>
parents:
diff changeset
318 # prune cache
41266
92cf293fd93d remotefilelog: import Queue on Python 2, and queue on Python 3
Augie Fackler <augie@google.com>
parents: 41259
diff changeset
319 queue = pycompat.queue.PriorityQueue()
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
320 originalsize = 0
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
321 size = 0
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
322 count = 0
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
323 removed = 0
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
324
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
325 # keep files newer than a day even if they aren't needed
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
326 limit = time.time() - (60 * 60 * 24)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
327
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diff changeset
328 progress = ui.makeprogress(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
329 _(b"removing unnecessary files"), unit=b"files"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41501
diff changeset
330 )
40841
ad21fbcb1ba5 remotefilelog: use progress helper in basestore
Martin von Zweigbergk <martinvonz@google.com>
parents: 40614
diff changeset
331 progress.update(0)
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
332 for root, dirs, files in os.walk(cachepath):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
333 for file in files:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
334 if file == b'repos':
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
335 continue
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
336
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
337 # Don't delete pack files
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
338 if b'/packs/' in root:
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
339 continue
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
340
40841
ad21fbcb1ba5 remotefilelog: use progress helper in basestore
Martin von Zweigbergk <martinvonz@google.com>
parents: 40614
diff changeset
341 progress.update(count)
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
342 path = os.path.join(root, file)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
343 key = os.path.relpath(path, cachepath)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
344 count += 1
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
345 try:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
346 pathstat = os.stat(path)
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Augie Fackler <augie@google.com>
parents:
diff changeset
347 except OSError as e:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
348 # errno.ENOENT = no such file or directory
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Augie Fackler <augie@google.com>
parents:
diff changeset
349 if e.errno != errno.ENOENT:
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Augie Fackler <augie@google.com>
parents:
diff changeset
350 raise
43077
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diff changeset
351 msg = _(
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
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diff changeset
352 b"warning: file %s was removed by another process\n"
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
353 )
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
354 ui.warn(msg % path)
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Augie Fackler <augie@google.com>
parents:
diff changeset
355 continue
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
356
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
357 originalsize += pathstat.st_size
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Augie Fackler <augie@google.com>
parents:
diff changeset
358
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
359 if key in keepkeys or pathstat.st_atime > limit:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
360 queue.put((pathstat.st_atime, path, pathstat))
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
361 size += pathstat.st_size
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
362 else:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
363 try:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
364 shallowutil.unlinkfile(path)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
365 except OSError as e:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
366 # errno.ENOENT = no such file or directory
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
367 if e.errno != errno.ENOENT:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
368 raise
43076
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Augie Fackler <augie@google.com>
parents: 41501
diff changeset
369 msg = _(
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
370 b"warning: file %s was removed by another "
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
371 b"process\n"
43076
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Augie Fackler <augie@google.com>
parents: 41501
diff changeset
372 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
373 ui.warn(msg % path)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
374 continue
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375 removed += 1
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376 progress.complete()
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377
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378 # remove oldest files until under limit
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379 limit = ui.configbytes(b"remotefilelog", b"cachelimit")
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380 if size > limit:
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381 excess = size - limit
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382 progress = ui.makeprogress(
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383 _(b"enforcing cache limit"), unit=b"bytes", total=excess
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384 )
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385 removedexcess = 0
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386 while queue and size > limit and size > 0:
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387 progress.update(removedexcess)
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388 atime, oldpath, oldpathstat = queue.get()
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389 try:
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390 shallowutil.unlinkfile(oldpath)
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391 except OSError as e:
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392 # errno.ENOENT = no such file or directory
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393 if e.errno != errno.ENOENT:
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394 raise
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395 msg = _(
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396 b"warning: file %s was removed by another process\n"
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397 )
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398 ui.warn(msg % oldpath)
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399 size -= oldpathstat.st_size
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400 removed += 1
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401 removedexcess += oldpathstat.st_size
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402 progress.complete()
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403
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404 ui.status(
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405 _(b"finished: removed %d of %d files (%0.2f GB to %0.2f GB)\n")
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406 % (
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407 removed,
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408 count,
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409 float(originalsize) / 1024.0 / 1024.0 / 1024.0,
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410 float(size) / 1024.0 / 1024.0 / 1024.0,
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411 )
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412 )
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413
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414
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415 class baseunionstore(object):
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416 def __init__(self, *args, **kwargs):
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417 # If one of the functions that iterates all of the stores is about to
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418 # throw a KeyError, try this many times with a full refresh between
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419 # attempts. A repack operation may have moved data from one store to
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420 # another while we were running.
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421 self.numattempts = kwargs.get('numretries', 0) + 1
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422 # If not-None, call this function on every retry and if the attempts are
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423 # exhausted.
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424 self.retrylog = kwargs.get('retrylog', None)
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425
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426 def markforrefresh(self):
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427 for store in self.stores:
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428 if util.safehasattr(store, b'markforrefresh'):
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429 store.markforrefresh()
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430
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431 @staticmethod
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432 def retriable(fn):
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433 def noop(*args):
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434 pass
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435
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436 def wrapped(self, *args, **kwargs):
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437 retrylog = self.retrylog or noop
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438 funcname = fn.__name__
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439 i = 0
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440 while i < self.numattempts:
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441 if i > 0:
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442 retrylog(
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443 b're-attempting (n=%d) %s\n'
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444 % (i, pycompat.sysbytes(funcname))
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445 )
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446 self.markforrefresh()
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447 i += 1
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448 try:
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449 return fn(self, *args, **kwargs)
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450 except KeyError:
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451 if i == self.numattempts:
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452 # retries exhausted
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453 retrylog(
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454 b'retries exhausted in %s, raising KeyError\n'
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455 % pycompat.sysbytes(funcname)
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456 )
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457 raise
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458
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459 return wrapped