Mercurial > public > mercurial-scm > hg

annotate hgext/blackbox.py @ 28245:caa2a0c6fbb7

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blackbox: log working directory version Without this, while you could see the list of commands run, it wasn't possible to identify what they were doing, because commads could rely on revsets (including remote input which varies over time).
author timeless <timeless@mozdev.org>
date Tue, 09 Feb 2016 19:16:06 +0000
parents c17d7b1c40be
children b862e793ec10
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # blackbox.py - log repository events to a file for post-mortem debugging
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2 #
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3 # Copyright 2010 Nicolas Dumazet
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4 # Copyright 2013 Facebook, Inc.
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 """log repository events to a blackbox for debugging
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10
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11 Logs event information to .hg/blackbox.log to help debug and diagnose problems.
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12 The events that get logged can be configured via the blackbox.track config key.
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13 Examples::
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14
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15 [blackbox]
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16 track = *
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17
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18 [blackbox]
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19 track = command, commandfinish, commandexception, exthook, pythonhook
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20
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21 [blackbox]
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22 track = incoming
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23
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24 [blackbox]
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25 # limit the size of a log file
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26 maxsize = 1.5 MB
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27 # rotate up to N log files when the current one gets too big
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28 maxfiles = 3
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29
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30 """
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31
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32 from __future__ import absolute_import
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33
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34 import errno
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35 import re
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36
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37 from mercurial.i18n import _
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38 from mercurial.node import hex
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39
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40 from mercurial import (
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41 cmdutil,
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42 util,
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43 )
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44
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45 cmdtable = {}
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46 command = cmdutil.command(cmdtable)
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47 # Note for extension authors: ONLY specify testedwith = 'internal' for
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48 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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49 # be specifying the version(s) of Mercurial they are tested with, or
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50 # leave the attribute unspecified.
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51 testedwith = 'internal'
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52 lastfp = None
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53
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54 filehandles = {}
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55
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56 def _openlog(vfs):
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57 path = vfs.join('blackbox.log')
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58 if path in filehandles:
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59 return filehandles[path]
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60 filehandles[path] = fp = vfs('blackbox.log', 'a')
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61 return fp
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62
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63 def _closelog(vfs):
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64 path = vfs.join('blackbox.log')
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65 fp = filehandles[path]
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66 del filehandles[path]
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67 fp.close()
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68
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69 def hexfn(node):
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70 if node is None:
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71 return None
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72 else:
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73 return hex(node)
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74
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75 def wrapui(ui):
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76 class blackboxui(ui.__class__):
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77 @util.propertycache
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78 def track(self):
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79 return self.configlist('blackbox', 'track', ['*'])
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80
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81 def _openlogfile(self):
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82 def rotate(oldpath, newpath):
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83 try:
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84 self._bbvfs.unlink(newpath)
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85 except OSError as err:
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86 if err.errno != errno.ENOENT:
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87 self.debug("warning: cannot remove '%s': %s\n" %
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88 (newpath, err.strerror))
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89 try:
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90 if newpath:
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91 self._bbvfs.rename(oldpath, newpath)
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92 except OSError as err:
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93 if err.errno != errno.ENOENT:
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94 self.debug("warning: cannot rename '%s' to '%s': %s\n" %
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95 (newpath, oldpath, err.strerror))
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96
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97 fp = _openlog(self._bbvfs)
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98 maxsize = self.configbytes('blackbox', 'maxsize', 1048576)
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99 if maxsize > 0:
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100 st = self._bbvfs.fstat(fp)
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101 if st.st_size >= maxsize:
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102 path = fp.name
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103 _closelog(self._bbvfs)
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104 maxfiles = self.configint('blackbox', 'maxfiles', 7)
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105 for i in xrange(maxfiles - 1, 1, -1):
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106 rotate(oldpath='%s.%d' % (path, i - 1),
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107 newpath='%s.%d' % (path, i))
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108 rotate(oldpath=path,
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109 newpath=maxfiles > 0 and path + '.1')
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110 fp = _openlog(self._bbvfs)
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111 return fp
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112
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113 def log(self, event, *msg, **opts):
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114 global lastfp
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115 super(blackboxui, self).log(event, *msg, **opts)
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116
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117 if not '*' in self.track and not event in self.track:
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118 return
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119
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120 if util.safehasattr(self, '_blackbox'):
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121 fp = self._blackbox
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122 elif util.safehasattr(self, '_bbvfs'):
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123 try:
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124 self._bbfp = self._openlogfile()
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125 except (IOError, OSError) as err:
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126 self.debug('warning: cannot write to blackbox.log: %s\n' %
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127 err.strerror)
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128 del self._bbvfs
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129 self._bbfp = None
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130 fp = self._bbfp
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131 else:
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132 # certain ui instances exist outside the context of
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133 # a repo, so just default to the last blackbox that
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134 # was seen.
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135 fp = lastfp
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136
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137 if fp:
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138 date = util.datestr(None, '%Y/%m/%d %H:%M:%S')
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139 user = util.getuser()
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140 pid = str(util.getpid())
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141 formattedmsg = msg[0] % msg[1:]
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142 rev = '(unknown)'
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143 if util.safehasattr(self, '_bbrepo'):
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144 ctx = self._bbrepo[None]
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145 if ctx.rev() is not None:
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146 rev = hexfn(ctx.node())
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147 else:
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148 parents = ctx.parents()
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149 rev = ('+'.join([hexfn(p.node()) for p in parents]))
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150 try:
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151 fp.write('%s %s @%s (%s)> %s' %
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152 (date, user, rev, pid, formattedmsg))
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153 fp.flush()
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154 except IOError as err:
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155 self.debug('warning: cannot write to blackbox.log: %s\n' %
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156 err.strerror)
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157 if not lastfp or util.safehasattr(self, '_bbrepo'):
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158 lastfp = fp
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Durham Goode <durham@fb.com>
parents:
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159
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parents:
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160 def setrepo(self, repo):
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161 self._bbvfs = repo.vfs
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162 self._bbrepo = repo
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parents:
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163
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164 ui.__class__ = blackboxui
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parents:
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165
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parents:
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166 def uisetup(ui):
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parents:
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167 wrapui(ui)
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parents:
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168
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169 def reposetup(ui, repo):
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parents:
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170 # During 'hg pull' a httppeer repo is created to represent the remote repo.
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parents:
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171 # It doesn't have a .hg directory to put a blackbox in, so we don't do
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parents:
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172 # the blackbox setup for it.
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parents:
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173 if not repo.local():
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parents:
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174 return
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parents:
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175
19230
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176 if util.safehasattr(ui, 'setrepo'):
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177 ui.setrepo(repo)
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178
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179 @command('^blackbox',
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180 [('l', 'limit', 10, _('the number of events to show')),
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181 ],
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182 _('hg blackbox [OPTION]...'))
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183 def blackbox(ui, repo, *revs, **opts):
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184 '''view the recent repository events
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185 '''
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186
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parents: 28025
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187 if not repo.vfs.exists('blackbox.log'):
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parents: 18669
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188 return
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parents: 18669
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189
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190 limit = opts.get('limit')
28244
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timeless <timeless@mozdev.org>
parents: 28243
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191 fp = repo.vfs('blackbox.log', 'r')
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parents: 28243
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192 lines = fp.read().split('\n')
18673
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parents: 18669
diff changeset
193
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diff changeset
194 count = 0
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195 output = []
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196 for line in reversed(lines):
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parents: 18669
diff changeset
197 if count >= limit:
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parents: 18669
diff changeset
198 break
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parents: 18669
diff changeset
199
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diff changeset
200 # count the commands by matching lines like: 2013/01/23 19:13:36 root>
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Durham Goode <durham@fb.com>
parents: 18669
diff changeset
201 if re.match('^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line):
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Durham Goode <durham@fb.com>
parents: 18669
diff changeset
202 count += 1
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Durham Goode <durham@fb.com>
parents: 18669
diff changeset
203 output.append(line)
f27598902007 blackbox: adds a 'blackbox' command for viewing recent logs
Durham Goode <durham@fb.com>
parents: 18669
diff changeset
204
f27598902007 blackbox: adds a 'blackbox' command for viewing recent logs
Durham Goode <durham@fb.com>
parents: 18669
diff changeset
205 ui.status('\n'.join(reversed(output)))