Mercurial > hg
annotate hgext/blackbox.py @ 26365:33af0c53aeff
help: add config.troubleshooting section at the top
author | timeless@mozdev.org |
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date | Thu, 24 Sep 2015 14:45:17 -0400 |
parents | e8f9dffca36f |
children | ab6468270b83 |
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 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 mercurial import util, cmdutil |
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33 from mercurial.i18n import _ |
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34 import errno, os, re |
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35 |
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36 cmdtable = {} |
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37 command = cmdutil.command(cmdtable) |
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38 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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39 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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40 # be specifying the version(s) of Mercurial they are tested with, or |
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41 # leave the attribute unspecified. |
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42 testedwith = 'internal' |
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43 lastblackbox = None |
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44 |
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45 def wrapui(ui): |
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46 class blackboxui(ui.__class__): |
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47 @util.propertycache |
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48 def track(self): |
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49 return self.configlist('blackbox', 'track', ['*']) |
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50 |
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51 def _openlogfile(self): |
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52 def rotate(oldpath, newpath): |
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53 try: |
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54 os.unlink(newpath) |
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55 except OSError as err: |
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56 if err.errno != errno.ENOENT: |
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57 self.debug("warning: cannot remove '%s': %s\n" % |
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58 (newpath, err.strerror)) |
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59 try: |
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60 if newpath: |
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61 os.rename(oldpath, newpath) |
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62 except OSError as err: |
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63 if err.errno != errno.ENOENT: |
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64 self.debug("warning: cannot rename '%s' to '%s': %s\n" % |
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65 (newpath, oldpath, err.strerror)) |
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66 |
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67 fp = self._bbopener('blackbox.log', 'a') |
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68 maxsize = self.configbytes('blackbox', 'maxsize', 1048576) |
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69 if maxsize > 0: |
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70 st = os.fstat(fp.fileno()) |
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71 if st.st_size >= maxsize: |
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72 path = fp.name |
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73 fp.close() |
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74 maxfiles = self.configint('blackbox', 'maxfiles', 7) |
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75 for i in xrange(maxfiles - 1, 1, -1): |
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76 rotate(oldpath='%s.%d' % (path, i - 1), |
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77 newpath='%s.%d' % (path, i)) |
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78 rotate(oldpath=path, |
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79 newpath=maxfiles > 0 and path + '.1') |
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80 fp = self._bbopener('blackbox.log', 'a') |
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81 return fp |
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82 |
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83 def log(self, event, *msg, **opts): |
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84 global lastblackbox |
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85 super(blackboxui, self).log(event, *msg, **opts) |
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86 |
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87 if not '*' in self.track and not event in self.track: |
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88 return |
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89 |
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90 if util.safehasattr(self, '_blackbox'): |
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91 blackbox = self._blackbox |
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92 elif util.safehasattr(self, '_bbopener'): |
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93 try: |
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94 self._blackbox = self._openlogfile() |
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95 except (IOError, OSError) as err: |
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96 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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97 err.strerror) |
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98 del self._bbopener |
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99 self._blackbox = None |
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100 blackbox = self._blackbox |
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101 else: |
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102 # certain ui instances exist outside the context of |
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103 # a repo, so just default to the last blackbox that |
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104 # was seen. |
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105 blackbox = lastblackbox |
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106 |
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107 if blackbox: |
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108 date = util.datestr(None, '%Y/%m/%d %H:%M:%S') |
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109 user = util.getuser() |
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111 formattedmsg = msg[0] % msg[1:] |
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112 try: |
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114 (date, user, pid, formattedmsg)) | |
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115 except IOError as err: |
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116 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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117 err.strerror) |
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118 lastblackbox = blackbox |
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119 |
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120 def setrepo(self, repo): |
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121 self._bbopener = repo.vfs |
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122 |
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123 ui.__class__ = blackboxui |
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124 |
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125 def uisetup(ui): |
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126 wrapui(ui) |
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127 |
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128 def reposetup(ui, repo): |
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129 # During 'hg pull' a httppeer repo is created to represent the remote repo. |
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130 # It doesn't have a .hg directory to put a blackbox in, so we don't do |
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131 # the blackbox setup for it. |
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132 if not repo.local(): |
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133 return |
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134 |
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135 if util.safehasattr(ui, 'setrepo'): |
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136 ui.setrepo(repo) |
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137 |
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138 @command('^blackbox', |
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139 [('l', 'limit', 10, _('the number of events to show')), |
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140 ], |
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141 _('hg blackbox [OPTION]...')) |
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142 def blackbox(ui, repo, *revs, **opts): |
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143 '''view the recent repository events |
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144 ''' |
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145 |
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146 if not os.path.exists(repo.join('blackbox.log')): |
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147 return |
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148 |
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149 limit = opts.get('limit') |
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150 blackbox = repo.vfs('blackbox.log', 'r') |
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151 lines = blackbox.read().split('\n') |
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152 |
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153 count = 0 |
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154 output = [] |
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155 for line in reversed(lines): |
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156 if count >= limit: |
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157 break |
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158 |
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159 # count the commands by matching lines like: 2013/01/23 19:13:36 root> |
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160 if re.match('^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line): |
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161 count += 1 |
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162 output.append(line) |
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163 |
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164 ui.status('\n'.join(reversed(output))) |