Mercurial > hg
annotate hgext/blackbox.py @ 23203:3872d563e01a
changelog: handle writepending in the transaction
The 'delayupdate' method now takes a transaction object and registers its
'_writepending' method for execution in 'transaction.writepending()'. The hook can then
use 'transaction.writepending()' directly.
At some point this will allow the addition of other file creation
during writepending.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Fri, 17 Oct 2014 21:55:31 -0700 |
parents | 6d6f148cada9 |
children | 7cc77030c557 |
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 testedwith = 'internal' |
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39 lastblackbox = None |
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40 |
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41 def wrapui(ui): |
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42 class blackboxui(ui.__class__): |
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43 @util.propertycache |
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44 def track(self): |
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45 return self.configlist('blackbox', 'track', ['*']) |
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46 |
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47 def _openlogfile(self): |
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48 def rotate(oldpath, newpath): |
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49 try: |
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50 os.unlink(newpath) |
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51 except OSError, err: |
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52 if err.errno != errno.ENOENT: |
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53 self.debug("warning: cannot remove '%s': %s\n" % |
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54 (newpath, err.strerror)) |
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55 try: |
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56 if newpath: |
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57 os.rename(oldpath, newpath) |
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58 except OSError, err: |
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59 if err.errno != errno.ENOENT: |
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60 self.debug("warning: cannot rename '%s' to '%s': %s\n" % |
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61 (newpath, oldpath, err.strerror)) |
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62 |
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63 fp = self._bbopener('blackbox.log', 'a') |
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64 maxsize = self.configbytes('blackbox', 'maxsize', 1048576) |
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65 if maxsize > 0: |
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66 st = os.fstat(fp.fileno()) |
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67 if st.st_size >= maxsize: |
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68 path = fp.name |
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69 fp.close() |
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70 maxfiles = self.configint('blackbox', 'maxfiles', 7) |
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71 for i in xrange(maxfiles - 1, 1, -1): |
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72 rotate(oldpath='%s.%d' % (path, i - 1), |
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73 newpath='%s.%d' % (path, i)) |
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74 rotate(oldpath=path, |
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75 newpath=maxfiles > 0 and path + '.1') |
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76 fp = self._bbopener('blackbox.log', 'a') |
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77 return fp |
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78 |
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79 def log(self, event, *msg, **opts): |
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80 global lastblackbox |
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81 super(blackboxui, self).log(event, *msg, **opts) |
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82 |
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83 if not '*' in self.track and not event in self.track: |
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84 return |
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85 |
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86 if util.safehasattr(self, '_blackbox'): |
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87 blackbox = self._blackbox |
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88 elif util.safehasattr(self, '_bbopener'): |
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89 try: |
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90 self._blackbox = self._openlogfile() |
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91 except (IOError, OSError), err: |
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92 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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93 err.strerror) |
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94 del self._bbopener |
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95 self._blackbox = None |
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96 blackbox = self._blackbox |
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97 else: |
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98 # certain ui instances exist outside the context of |
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99 # a repo, so just default to the last blackbox that |
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100 # was seen. |
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101 blackbox = lastblackbox |
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102 |
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103 if blackbox: |
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104 date = util.datestr(None, '%Y/%m/%d %H:%M:%S') |
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105 user = util.getuser() |
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106 formattedmsg = msg[0] % msg[1:] |
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107 try: |
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108 blackbox.write('%s %s> %s' % (date, user, formattedmsg)) |
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109 except IOError, err: |
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110 self.debug('warning: cannot write to blackbox.log: %s\n' % |
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111 err.strerror) |
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112 lastblackbox = blackbox |
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113 |
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114 def setrepo(self, repo): |
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115 self._bbopener = repo.opener |
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116 |
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117 ui.__class__ = blackboxui |
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118 |
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119 def uisetup(ui): |
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120 wrapui(ui) |
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121 |
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122 def reposetup(ui, repo): |
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123 # During 'hg pull' a httppeer repo is created to represent the remote repo. |
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124 # It doesn't have a .hg directory to put a blackbox in, so we don't do |
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125 # the blackbox setup for it. |
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126 if not repo.local(): |
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127 return |
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128 |
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129 if util.safehasattr(ui, 'setrepo'): |
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130 ui.setrepo(repo) |
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131 |
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132 @command('^blackbox', |
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133 [('l', 'limit', 10, _('the number of events to show')), |
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134 ], |
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135 _('hg blackbox [OPTION]...')) |
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136 def blackbox(ui, repo, *revs, **opts): |
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137 '''view the recent repository events |
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138 ''' |
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139 |
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140 if not os.path.exists(repo.join('blackbox.log')): |
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141 return |
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142 |
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143 limit = opts.get('limit') |
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144 blackbox = repo.opener('blackbox.log', 'r') |
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145 lines = blackbox.read().split('\n') |
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146 |
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147 count = 0 |
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148 output = [] |
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149 for line in reversed(lines): |
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150 if count >= limit: |
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151 break |
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152 |
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153 # count the commands by matching lines like: 2013/01/23 19:13:36 root> |
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154 if re.match('^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line): |
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155 count += 1 |
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156 output.append(line) |
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157 |
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158 ui.status('\n'.join(reversed(output))) |