Mercurial > hg
annotate hgext/blackbox.py @ 51538:e4eeb9fedfe3
branching: merge stable into default
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 25 Mar 2024 16:27:48 +0000 |
parents | 12c308c55e53 |
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rev | line source |
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18676 | 1 # blackbox.py - log repository events to a file for post-mortem debugging |
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2 # |
18676 | 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 and |
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13 blackbox.ignore config keys. |
28246 | 14 |
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15 Examples:: |
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16 |
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17 [blackbox] |
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18 track = * |
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19 ignore = pythonhook |
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20 # dirty is *EXPENSIVE* (slow); |
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21 # each log entry indicates `+` if the repository is dirty, like :hg:`id`. |
28246 | 22 dirty = True |
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23 # record the source of log messages |
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24 logsource = True |
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25 |
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26 [blackbox] |
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27 track = command, commandfinish, commandexception, exthook, pythonhook |
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28 |
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29 [blackbox] |
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30 track = incoming |
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31 |
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32 [blackbox] |
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33 # limit the size of a log file |
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34 maxsize = 1.5 MB |
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35 # rotate up to N log files when the current one gets too big |
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36 maxfiles = 3 |
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37 |
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38 [blackbox] |
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39 # Include microseconds in log entries with %f (see Python function |
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40 # datetime.datetime.strftime) |
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41 date-format = %Y-%m-%d @ %H:%M:%S.%f |
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42 |
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43 """ |
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44 |
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45 |
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46 import re |
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47 |
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48 from mercurial.i18n import _ |
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49 from mercurial.node import hex |
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50 |
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51 from mercurial import ( |
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52 encoding, |
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53 loggingutil, |
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54 registrar, |
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55 ) |
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56 from mercurial.utils import ( |
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57 dateutil, |
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58 procutil, |
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59 ) |
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60 |
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61 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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62 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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63 # be specifying the version(s) of Mercurial they are tested with, or |
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64 # leave the attribute unspecified. |
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65 testedwith = b'ships-with-hg-core' |
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66 |
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67 cmdtable = {} |
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68 command = registrar.command(cmdtable) |
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69 |
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70 _lastlogger = loggingutil.proxylogger() |
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71 |
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72 |
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73 class blackboxlogger: |
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74 def __init__(self, ui, repo): |
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75 self._repo = repo |
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76 self._trackedevents = set(ui.configlist(b'blackbox', b'track')) |
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77 self._ignoredevents = set(ui.configlist(b'blackbox', b'ignore')) |
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78 self._maxfiles = ui.configint(b'blackbox', b'maxfiles') |
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79 self._maxsize = ui.configbytes(b'blackbox', b'maxsize') |
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80 self._inlog = False |
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81 |
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82 def tracked(self, event): |
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83 return ( |
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84 b'*' in self._trackedevents and event not in self._ignoredevents |
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85 ) or event in self._trackedevents |
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86 |
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87 def log(self, ui, event, msg, opts): |
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88 # self._log() -> ctx.dirty() may create new subrepo instance, which |
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89 # ui is derived from baseui. So the recursion guard in ui.log() |
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90 # doesn't work as it's local to the ui instance. |
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91 if self._inlog: |
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92 return |
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93 self._inlog = True |
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94 try: |
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95 self._log(ui, event, msg, opts) |
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96 finally: |
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97 self._inlog = False |
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98 |
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99 def _log(self, ui, event, msg, opts): |
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100 default = ui.configdate(b'devel', b'default-date') |
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101 dateformat = ui.config(b'blackbox', b'date-format') |
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102 debug_to_stderr = ui.configbool(b'blackbox', b'debug.to-stderr') |
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103 if dateformat: |
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104 date = dateutil.datestr(default, dateformat) |
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105 else: |
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106 # We want to display milliseconds (more precision seems |
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107 # unnecessary). Since %.3f is not supported, use %f and truncate |
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108 # microseconds. |
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109 date = dateutil.datestr(default, b'%Y-%m-%d %H:%M:%S.%f')[:-3] |
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110 user = procutil.getuser() |
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111 pid = b'%d' % procutil.getpid() |
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112 changed = b'' |
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113 ctx = self._repo[None] |
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114 parents = ctx.parents() |
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115 rev = b'+'.join([hex(p.node()) for p in parents]) |
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116 if ui.configbool(b'blackbox', b'dirty') and ctx.dirty( |
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117 missing=True, merge=False, branch=False |
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118 ): |
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119 changed = b'+' |
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120 if ui.configbool(b'blackbox', b'logsource'): |
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121 src = b' [%s]' % event |
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122 else: |
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123 src = b'' |
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124 try: |
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125 fmt = b'%s %s @%s%s (%s)%s> %s' |
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126 args = (date, user, rev, changed, pid, src, msg) |
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127 with loggingutil.openlogfile( |
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128 ui, |
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129 self._repo.vfs, |
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130 name=b'blackbox.log', |
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131 maxfiles=self._maxfiles, |
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132 maxsize=self._maxsize, |
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133 ) as fp: |
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134 msg = fmt % args |
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135 fp.write(msg) |
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136 if debug_to_stderr: |
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137 ui.write_err(msg) |
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138 except (IOError, OSError) as err: |
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139 # deactivate this to avoid failed logging again |
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140 self._trackedevents.clear() |
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141 ui.debug( |
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142 b'warning: cannot write to blackbox.log: %s\n' |
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143 % encoding.strtolocal(err.strerror) |
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144 ) |
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145 return |
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146 _lastlogger.logger = self |
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147 |
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148 |
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149 def uipopulate(ui): |
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150 ui.setlogger(b'blackbox', _lastlogger) |
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151 |
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152 |
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153 def reposetup(ui, repo): |
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154 # During 'hg pull' a httppeer repo is created to represent the remote repo. |
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155 # It doesn't have a .hg directory to put a blackbox in, so we don't do |
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156 # the blackbox setup for it. |
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157 if not repo.local(): |
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158 return |
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159 |
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160 # Since blackbox.log is stored in the repo directory, the logger should be |
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161 # instantiated per repository. |
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162 logger = blackboxlogger(ui, repo) |
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163 ui.setlogger(b'blackbox', logger) |
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164 |
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165 # Set _lastlogger even if ui.log is not called. This gives blackbox a |
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166 # fallback place to log |
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167 if _lastlogger.logger is None: |
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168 _lastlogger.logger = logger |
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169 |
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170 repo._wlockfreeprefix.add(b'blackbox.log') |
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171 |
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172 |
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173 @command( |
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174 b'blackbox', |
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175 [ |
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176 (b'l', b'limit', 10, _(b'the number of events to show')), |
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177 ], |
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178 _(b'hg blackbox [OPTION]...'), |
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179 helpcategory=command.CATEGORY_MAINTENANCE, |
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180 helpbasic=True, |
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181 ) |
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182 def blackbox(ui, repo, *revs, **opts): |
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183 """view the recent repository events""" |
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184 |
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185 if not repo.vfs.exists(b'blackbox.log'): |
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186 return |
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187 |
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188 limit = opts.get('limit') |
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189 assert limit is not None # help pytype |
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190 |
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191 fp = repo.vfs(b'blackbox.log', b'r') |
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192 lines = fp.read().split(b'\n') |
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193 |
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194 count = 0 |
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195 output = [] |
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196 for line in reversed(lines): |
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197 if count >= limit: |
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198 break |
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199 |
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200 # count the commands by matching lines like: |
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201 # 2013/01/23 19:13:36 root> |
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202 # 2013/01/23 19:13:36 root (1234)> |
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203 # 2013/01/23 19:13:36 root @0000000000000000000000000000000000000000 (1234)> |
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204 # 2013-01-23 19:13:36.000 root @0000000000000000000000000000000000000000 (1234)> |
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205 if re.match( |
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206 br'^\d{4}[-/]\d{2}[-/]\d{2} \d{2}:\d{2}:\d{2}(.\d*)? .*> .*', line |
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207 ): |
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208 count += 1 |
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209 output.append(line) |
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210 |
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211 ui.status(b'\n'.join(reversed(output))) |