Mercurial > hg
annotate hgext/blackbox.py @ 48348:6ce9ccfcac23
filemerge: simplify slightly by using filectx.decodeddata()
Differential Revision: https://phab.mercurial-scm.org/D11802
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Fri, 19 Nov 2021 18:48:34 -0800 |
parents | 36f3a64846c8 |
children | fe4922564661 |
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. |
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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 nanoseconds 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 from __future__ import absolute_import |
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46 |
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47 import re |
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48 |
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49 from mercurial.i18n import _ |
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50 from mercurial.node import hex |
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51 |
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52 from mercurial import ( |
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53 encoding, |
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54 loggingutil, |
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55 registrar, |
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56 ) |
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57 from mercurial.utils import ( |
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58 dateutil, |
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59 procutil, |
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60 ) |
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61 |
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62 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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63 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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64 # be specifying the version(s) of Mercurial they are tested with, or |
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65 # leave the attribute unspecified. |
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66 testedwith = b'ships-with-hg-core' |
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67 |
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68 cmdtable = {} |
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69 command = registrar.command(cmdtable) |
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70 |
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71 configtable = {} |
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72 configitem = registrar.configitem(configtable) |
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73 |
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74 configitem( |
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75 b'blackbox', |
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76 b'dirty', |
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77 default=False, |
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78 ) |
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79 configitem( |
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80 b'blackbox', |
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81 b'maxsize', |
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82 default=b'1 MB', |
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83 ) |
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84 configitem( |
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85 b'blackbox', |
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86 b'logsource', |
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87 default=False, |
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88 ) |
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89 configitem( |
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90 b'blackbox', |
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91 b'maxfiles', |
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92 default=7, |
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93 ) |
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94 configitem( |
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95 b'blackbox', |
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96 b'track', |
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97 default=lambda: [b'*'], |
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98 ) |
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99 configitem( |
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100 b'blackbox', |
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101 b'ignore', |
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102 default=lambda: [b'chgserver', b'cmdserver', b'extension'], |
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103 ) |
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104 configitem( |
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105 b'blackbox', |
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106 b'date-format', |
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107 default=b'%Y/%m/%d %H:%M:%S', |
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108 ) |
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109 |
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110 _lastlogger = loggingutil.proxylogger() |
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111 |
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112 |
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113 class blackboxlogger(object): |
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114 def __init__(self, ui, repo): |
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115 self._repo = repo |
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116 self._trackedevents = set(ui.configlist(b'blackbox', b'track')) |
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117 self._ignoredevents = set(ui.configlist(b'blackbox', b'ignore')) |
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118 self._maxfiles = ui.configint(b'blackbox', b'maxfiles') |
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119 self._maxsize = ui.configbytes(b'blackbox', b'maxsize') |
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120 self._inlog = False |
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121 |
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122 def tracked(self, event): |
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123 return ( |
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124 b'*' in self._trackedevents and event not in self._ignoredevents |
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125 ) or event in self._trackedevents |
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126 |
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127 def log(self, ui, event, msg, opts): |
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128 # self._log() -> ctx.dirty() may create new subrepo instance, which |
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129 # ui is derived from baseui. So the recursion guard in ui.log() |
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130 # doesn't work as it's local to the ui instance. |
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131 if self._inlog: |
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132 return |
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133 self._inlog = True |
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134 try: |
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135 self._log(ui, event, msg, opts) |
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136 finally: |
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137 self._inlog = False |
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138 |
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139 def _log(self, ui, event, msg, opts): |
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140 default = ui.configdate(b'devel', b'default-date') |
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141 date = dateutil.datestr(default, ui.config(b'blackbox', b'date-format')) |
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142 user = procutil.getuser() |
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143 pid = b'%d' % procutil.getpid() |
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144 changed = b'' |
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145 ctx = self._repo[None] |
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146 parents = ctx.parents() |
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147 rev = b'+'.join([hex(p.node()) for p in parents]) |
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148 if ui.configbool(b'blackbox', b'dirty') and ctx.dirty( |
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149 missing=True, merge=False, branch=False |
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150 ): |
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151 changed = b'+' |
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152 if ui.configbool(b'blackbox', b'logsource'): |
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153 src = b' [%s]' % event |
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154 else: |
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155 src = b'' |
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156 try: |
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157 fmt = b'%s %s @%s%s (%s)%s> %s' |
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158 args = (date, user, rev, changed, pid, src, msg) |
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159 with loggingutil.openlogfile( |
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160 ui, |
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161 self._repo.vfs, |
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162 name=b'blackbox.log', |
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163 maxfiles=self._maxfiles, |
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164 maxsize=self._maxsize, |
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165 ) as fp: |
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166 fp.write(fmt % args) |
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167 except (IOError, OSError) as err: |
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168 # deactivate this to avoid failed logging again |
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169 self._trackedevents.clear() |
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170 ui.debug( |
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171 b'warning: cannot write to blackbox.log: %s\n' |
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172 % encoding.strtolocal(err.strerror) |
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173 ) |
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174 return |
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175 _lastlogger.logger = self |
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176 |
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177 |
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178 def uipopulate(ui): |
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179 ui.setlogger(b'blackbox', _lastlogger) |
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180 |
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181 |
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182 def reposetup(ui, repo): |
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183 # During 'hg pull' a httppeer repo is created to represent the remote repo. |
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184 # It doesn't have a .hg directory to put a blackbox in, so we don't do |
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185 # the blackbox setup for it. |
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186 if not repo.local(): |
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187 return |
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188 |
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189 # Since blackbox.log is stored in the repo directory, the logger should be |
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190 # instantiated per repository. |
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191 logger = blackboxlogger(ui, repo) |
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192 ui.setlogger(b'blackbox', logger) |
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193 |
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194 # Set _lastlogger even if ui.log is not called. This gives blackbox a |
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195 # fallback place to log |
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196 if _lastlogger.logger is None: |
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197 _lastlogger.logger = logger |
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198 |
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199 repo._wlockfreeprefix.add(b'blackbox.log') |
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200 |
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201 |
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202 @command( |
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203 b'blackbox', |
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204 [ |
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205 (b'l', b'limit', 10, _(b'the number of events to show')), |
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206 ], |
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207 _(b'hg blackbox [OPTION]...'), |
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208 helpcategory=command.CATEGORY_MAINTENANCE, |
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209 helpbasic=True, |
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210 ) |
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211 def blackbox(ui, repo, *revs, **opts): |
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212 """view the recent repository events""" |
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213 |
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214 if not repo.vfs.exists(b'blackbox.log'): |
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215 return |
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216 |
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217 limit = opts.get('limit') |
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218 fp = repo.vfs(b'blackbox.log', b'r') |
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219 lines = fp.read().split(b'\n') |
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220 |
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221 count = 0 |
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222 output = [] |
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223 for line in reversed(lines): |
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224 if count >= limit: |
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225 break |
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226 |
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227 # count the commands by matching lines like: 2013/01/23 19:13:36 root> |
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228 if re.match(br'^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line): |
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229 count += 1 |
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230 output.append(line) |
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231 |
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232 ui.status(b'\n'.join(reversed(output))) |