annotate hgext/blackbox.py @ 42170:6631f3e89b6f

setdiscovery: fix a few typos Differential Revision: https://phab.mercurial-scm.org/D6263
author Joerg Sonnenberger <joerg@bec.de>
date Wed, 17 Apr 2019 14:37:06 +0200
parents bd3f03d8cc9f
children 56132ebd14c6
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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
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14 Examples::
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15
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16 [blackbox]
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17 track = *
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18 # dirty is *EXPENSIVE* (slow);
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19 # each log entry indicates `+` if the repository is dirty, like :hg:`id`.
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20 dirty = True
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21 # record the source of log messages
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22 logsource = True
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23
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24 [blackbox]
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25 track = command, commandfinish, commandexception, exthook, pythonhook
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26
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27 [blackbox]
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28 track = incoming
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29
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30 [blackbox]
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31 # limit the size of a log file
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32 maxsize = 1.5 MB
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33 # rotate up to N log files when the current one gets too big
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34 maxfiles = 3
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35
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36 [blackbox]
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37 # Include nanoseconds in log entries with %f (see Python function
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38 # datetime.datetime.strftime)
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39 date-format = '%Y-%m-%d @ %H:%M:%S.%f'
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40
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41 """
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42
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43 from __future__ import absolute_import
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44
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45 import re
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46
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47 from mercurial.i18n import _
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48 from mercurial.node import hex
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49
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50 from mercurial import (
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51 encoding,
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52 loggingutil,
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53 registrar,
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54 )
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55 from mercurial.utils import (
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56 dateutil,
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57 procutil,
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58 )
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59
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60 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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61 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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62 # be specifying the version(s) of Mercurial they are tested with, or
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63 # leave the attribute unspecified.
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64 testedwith = 'ships-with-hg-core'
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65
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66 cmdtable = {}
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67 command = registrar.command(cmdtable)
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68
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69 configtable = {}
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70 configitem = registrar.configitem(configtable)
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71
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72 configitem('blackbox', 'dirty',
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73 default=False,
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74 )
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75 configitem('blackbox', 'maxsize',
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76 default='1 MB',
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77 )
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78 configitem('blackbox', 'logsource',
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79 default=False,
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80 )
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81 configitem('blackbox', 'maxfiles',
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82 default=7,
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83 )
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84 configitem('blackbox', 'track',
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85 default=lambda: ['*'],
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86 )
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87 configitem('blackbox', 'date-format',
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88 default='%Y/%m/%d %H:%M:%S',
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89 )
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90
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91 _lastlogger = loggingutil.proxylogger()
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92
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93 class blackboxlogger(object):
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94 def __init__(self, ui, repo):
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95 self._repo = repo
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96 self._trackedevents = set(ui.configlist('blackbox', 'track'))
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97 self._maxfiles = ui.configint('blackbox', 'maxfiles')
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98 self._maxsize = ui.configbytes('blackbox', 'maxsize')
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99 self._inlog = False
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100
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101 def tracked(self, event):
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102 return b'*' in self._trackedevents or event in self._trackedevents
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103
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104 def log(self, ui, event, msg, opts):
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105 # self._log() -> ctx.dirty() may create new subrepo instance, which
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106 # ui is derived from baseui. So the recursion guard in ui.log()
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107 # doesn't work as it's local to the ui instance.
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108 if self._inlog:
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109 return
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110 self._inlog = True
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111 try:
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112 self._log(ui, event, msg, opts)
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113 finally:
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114 self._inlog = False
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115
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116 def _log(self, ui, event, msg, opts):
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117 default = ui.configdate('devel', 'default-date')
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118 date = dateutil.datestr(default, ui.config('blackbox', 'date-format'))
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119 user = procutil.getuser()
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120 pid = '%d' % procutil.getpid()
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121 changed = ''
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122 ctx = self._repo[None]
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123 parents = ctx.parents()
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124 rev = ('+'.join([hex(p.node()) for p in parents]))
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125 if (ui.configbool('blackbox', 'dirty') and
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126 ctx.dirty(missing=True, merge=False, branch=False)):
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127 changed = '+'
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128 if ui.configbool('blackbox', 'logsource'):
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129 src = ' [%s]' % event
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130 else:
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131 src = ''
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132 try:
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133 fmt = '%s %s @%s%s (%s)%s> %s'
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134 args = (date, user, rev, changed, pid, src, msg)
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135 with loggingutil.openlogfile(
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136 ui, self._repo.vfs, name='blackbox.log',
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137 maxfiles=self._maxfiles, maxsize=self._maxsize) as fp:
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138 fp.write(fmt % args)
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139 except (IOError, OSError) as err:
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140 # deactivate this to avoid failed logging again
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141 self._trackedevents.clear()
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142 ui.debug('warning: cannot write to blackbox.log: %s\n' %
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143 encoding.strtolocal(err.strerror))
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144 return
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145 _lastlogger.logger = self
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146
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147 def uipopulate(ui):
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148 ui.setlogger(b'blackbox', _lastlogger)
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149
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150 def reposetup(ui, repo):
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151 # During 'hg pull' a httppeer repo is created to represent the remote repo.
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152 # It doesn't have a .hg directory to put a blackbox in, so we don't do
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153 # the blackbox setup for it.
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154 if not repo.local():
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155 return
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156
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157 # Since blackbox.log is stored in the repo directory, the logger should be
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158 # instantiated per repository.
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159 logger = blackboxlogger(ui, repo)
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160 ui.setlogger(b'blackbox', logger)
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161
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162 # Set _lastlogger even if ui.log is not called. This gives blackbox a
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163 # fallback place to log
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164 if _lastlogger.logger is None:
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165 _lastlogger.logger = logger
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166
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Boris Feld <boris.feld@octobus.net>
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167 repo._wlockfreeprefix.add('blackbox.log')
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168
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169 @command('blackbox',
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170 [('l', 'limit', 10, _('the number of events to show')),
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171 ],
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172 _('hg blackbox [OPTION]...'),
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173 helpcategory=command.CATEGORY_MAINTENANCE,
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174 helpbasic=True)
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175 def blackbox(ui, repo, *revs, **opts):
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176 '''view the recent repository events
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177 '''
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178
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179 if not repo.vfs.exists('blackbox.log'):
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180 return
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181
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182 limit = opts.get(r'limit')
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183 fp = repo.vfs('blackbox.log', 'r')
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184 lines = fp.read().split('\n')
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185
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186 count = 0
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187 output = []
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188 for line in reversed(lines):
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189 if count >= limit:
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190 break
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191
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192 # count the commands by matching lines like: 2013/01/23 19:13:36 root>
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193 if re.match(br'^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line):
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194 count += 1
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195 output.append(line)
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196
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197 ui.status('\n'.join(reversed(output)))