annotate mercurial/loggingutil.py @ 42583:b9bc47211cf5

abort: added support for rebase This adds support of `rebase` to `hg abort` plan. An independent abort logic for `rebase` is created under `abortrebase()` function. For this a seperate `rebaseruntime` object is created under the function to handle an unfinished `rebasestate` and abort that using abort logic under `_prepareabortorcontinue`. Results of tests are shown. Differential Revision: https://phab.mercurial-scm.org/D6568
author Taapas Agrawal <taapas2897@gmail.com>
date Sun, 23 Jun 2019 23:11:35 +0530
parents 96be0ecad648
children 2372284d9457
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # loggingutil.py - utility for logging events
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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 from __future__ import absolute_import
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10
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11 import errno
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12
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13 from . import (
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14 pycompat,
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15 )
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16
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17 from .utils import (
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18 dateutil,
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19 procutil,
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20 stringutil,
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21 )
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22
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23 def openlogfile(ui, vfs, name, maxfiles=0, maxsize=0):
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24 """Open log file in append mode, with optional rotation
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25
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26 If maxsize > 0, the log file will be rotated up to maxfiles.
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27 """
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28 def rotate(oldpath, newpath):
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29 try:
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30 vfs.unlink(newpath)
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31 except OSError as err:
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32 if err.errno != errno.ENOENT:
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33 ui.debug("warning: cannot remove '%s': %s\n" %
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34 (newpath, err.strerror))
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35 try:
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36 if newpath:
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37 vfs.rename(oldpath, newpath)
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38 except OSError as err:
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39 if err.errno != errno.ENOENT:
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40 ui.debug("warning: cannot rename '%s' to '%s': %s\n" %
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41 (newpath, oldpath, err.strerror))
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42
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43 if maxsize > 0:
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44 try:
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45 st = vfs.stat(name)
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46 except OSError:
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47 pass
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48 else:
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49 if st.st_size >= maxsize:
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50 path = vfs.join(name)
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51 for i in pycompat.xrange(maxfiles - 1, 1, -1):
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52 rotate(oldpath='%s.%d' % (path, i - 1),
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53 newpath='%s.%d' % (path, i))
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54 rotate(oldpath=path,
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55 newpath=maxfiles > 0 and path + '.1')
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56 return vfs(name, 'a', makeparentdirs=False)
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57
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58 def _formatlogline(msg):
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59 date = dateutil.datestr(format=b'%Y/%m/%d %H:%M:%S')
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60 pid = procutil.getpid()
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61 return b'%s (%d)> %s' % (date, pid, msg)
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62
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63 def _matchevent(event, tracked):
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64 return b'*' in tracked or event in tracked
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65
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66 class filelogger(object):
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67 """Basic logger backed by physical file with optional rotation"""
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68
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69 def __init__(self, vfs, name, tracked, maxfiles=0, maxsize=0):
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70 self._vfs = vfs
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71 self._name = name
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72 self._trackedevents = set(tracked)
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73 self._maxfiles = maxfiles
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74 self._maxsize = maxsize
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75
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76 def tracked(self, event):
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77 return _matchevent(event, self._trackedevents)
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78
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79 def log(self, ui, event, msg, opts):
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80 line = _formatlogline(msg)
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81 try:
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82 with openlogfile(ui, self._vfs, self._name,
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83 maxfiles=self._maxfiles,
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84 maxsize=self._maxsize) as fp:
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85 fp.write(line)
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86 except IOError as err:
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87 ui.debug(b'cannot write to %s: %s\n'
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88 % (self._name, stringutil.forcebytestr(err)))
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89
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90 class fileobjectlogger(object):
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91 """Basic logger backed by file-like object"""
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92
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93 def __init__(self, fp, tracked):
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94 self._fp = fp
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95 self._trackedevents = set(tracked)
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96
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97 def tracked(self, event):
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98 return _matchevent(event, self._trackedevents)
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99
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100 def log(self, ui, event, msg, opts):
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101 line = _formatlogline(msg)
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102 try:
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103 self._fp.write(line)
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104 self._fp.flush()
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105 except IOError as err:
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106 ui.debug(b'cannot write to %s: %s\n'
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107 % (stringutil.forcebytestr(self._fp.name),
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108 stringutil.forcebytestr(err)))
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109
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110 class proxylogger(object):
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111 """Forward log events to another logger to be set later"""
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112
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113 def __init__(self):
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114 self.logger = None
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115
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116 def tracked(self, event):
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117 return self.logger is not None and self.logger.tracked(event)
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118
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119 def log(self, ui, event, msg, opts):
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120 assert self.logger is not None
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121 self.logger.log(ui, event, msg, opts)