blackbox.py
162 lines
| 5.4 KiB
| text/x-python
|
PythonLexer
/ hgext / blackbox.py
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r18676 | # blackbox.py - log repository events to a file for post-mortem debugging | ||
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r18669 | # | ||
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r18676 | # Copyright 2010 Nicolas Dumazet | ||
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r18669 | # Copyright 2013 Facebook, Inc. | ||
# | ||||
# This software may be used and distributed according to the terms of the | ||||
# GNU General Public License version 2 or any later version. | ||||
"""log repository events to a blackbox for debugging | ||||
Logs event information to .hg/blackbox.log to help debug and diagnose problems. | ||||
The events that get logged can be configured via the blackbox.track config key. | ||||
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r19162 | Examples:: | ||
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r18669 | |||
[blackbox] | ||||
track = * | ||||
[blackbox] | ||||
track = command, commandfinish, commandexception, exthook, pythonhook | ||||
[blackbox] | ||||
track = incoming | ||||
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r19066 | [blackbox] | ||
# limit the size of a log file | ||||
maxsize = 1.5 MB | ||||
# rotate up to N log files when the current one gets too big | ||||
maxfiles = 3 | ||||
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r18669 | """ | ||
from mercurial import util, cmdutil | ||||
from mercurial.i18n import _ | ||||
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r19066 | import errno, os, re | ||
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r18669 | |||
cmdtable = {} | ||||
command = cmdutil.command(cmdtable) | ||||
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r25186 | # Note for extension authors: ONLY specify testedwith = 'internal' for | ||
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should | ||||
# be specifying the version(s) of Mercurial they are tested with, or | ||||
# leave the attribute unspecified. | ||||
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r18669 | testedwith = 'internal' | ||
lastblackbox = None | ||||
def wrapui(ui): | ||||
class blackboxui(ui.__class__): | ||||
@util.propertycache | ||||
def track(self): | ||||
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r19052 | return self.configlist('blackbox', 'track', ['*']) | ||
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r18669 | |||
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r19066 | def _openlogfile(self): | ||
def rotate(oldpath, newpath): | ||||
try: | ||||
os.unlink(newpath) | ||||
except OSError, err: | ||||
if err.errno != errno.ENOENT: | ||||
self.debug("warning: cannot remove '%s': %s\n" % | ||||
(newpath, err.strerror)) | ||||
try: | ||||
if newpath: | ||||
os.rename(oldpath, newpath) | ||||
except OSError, err: | ||||
if err.errno != errno.ENOENT: | ||||
self.debug("warning: cannot rename '%s' to '%s': %s\n" % | ||||
(newpath, oldpath, err.strerror)) | ||||
fp = self._bbopener('blackbox.log', 'a') | ||||
maxsize = self.configbytes('blackbox', 'maxsize', 1048576) | ||||
if maxsize > 0: | ||||
st = os.fstat(fp.fileno()) | ||||
if st.st_size >= maxsize: | ||||
path = fp.name | ||||
fp.close() | ||||
maxfiles = self.configint('blackbox', 'maxfiles', 7) | ||||
for i in xrange(maxfiles - 1, 1, -1): | ||||
rotate(oldpath='%s.%d' % (path, i - 1), | ||||
newpath='%s.%d' % (path, i)) | ||||
rotate(oldpath=path, | ||||
newpath=maxfiles > 0 and path + '.1') | ||||
fp = self._bbopener('blackbox.log', 'a') | ||||
return fp | ||||
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r18669 | def log(self, event, *msg, **opts): | ||
global lastblackbox | ||||
super(blackboxui, self).log(event, *msg, **opts) | ||||
if not '*' in self.track and not event in self.track: | ||||
return | ||||
if util.safehasattr(self, '_blackbox'): | ||||
blackbox = self._blackbox | ||||
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r18831 | elif util.safehasattr(self, '_bbopener'): | ||
try: | ||||
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r19066 | self._blackbox = self._openlogfile() | ||
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r18831 | except (IOError, OSError), err: | ||
self.debug('warning: cannot write to blackbox.log: %s\n' % | ||||
err.strerror) | ||||
del self._bbopener | ||||
self._blackbox = None | ||||
blackbox = self._blackbox | ||||
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r18669 | else: | ||
# certain ui instances exist outside the context of | ||||
# a repo, so just default to the last blackbox that | ||||
# was seen. | ||||
blackbox = lastblackbox | ||||
if blackbox: | ||||
date = util.datestr(None, '%Y/%m/%d %H:%M:%S') | ||||
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r18787 | user = util.getuser() | ||
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r18669 | formattedmsg = msg[0] % msg[1:] | ||
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r18786 | try: | ||
blackbox.write('%s %s> %s' % (date, user, formattedmsg)) | ||||
except IOError, err: | ||||
self.debug('warning: cannot write to blackbox.log: %s\n' % | ||||
err.strerror) | ||||
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r18669 | lastblackbox = blackbox | ||
def setrepo(self, repo): | ||||
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r23877 | self._bbopener = repo.vfs | ||
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r18669 | |||
ui.__class__ = blackboxui | ||||
def uisetup(ui): | ||||
wrapui(ui) | ||||
def reposetup(ui, repo): | ||||
# During 'hg pull' a httppeer repo is created to represent the remote repo. | ||||
# It doesn't have a .hg directory to put a blackbox in, so we don't do | ||||
# the blackbox setup for it. | ||||
if not repo.local(): | ||||
return | ||||
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r19230 | if util.safehasattr(ui, 'setrepo'): | ||
ui.setrepo(repo) | ||||
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r18673 | |||
@command('^blackbox', | ||||
[('l', 'limit', 10, _('the number of events to show')), | ||||
], | ||||
_('hg blackbox [OPTION]...')) | ||||
def blackbox(ui, repo, *revs, **opts): | ||||
'''view the recent repository events | ||||
''' | ||||
if not os.path.exists(repo.join('blackbox.log')): | ||||
return | ||||
limit = opts.get('limit') | ||||
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r23877 | blackbox = repo.vfs('blackbox.log', 'r') | ||
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r18673 | lines = blackbox.read().split('\n') | ||
count = 0 | ||||
output = [] | ||||
for line in reversed(lines): | ||||
if count >= limit: | ||||
break | ||||
# count the commands by matching lines like: 2013/01/23 19:13:36 root> | ||||
if re.match('^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} .*> .*', line): | ||||
count += 1 | ||||
output.append(line) | ||||
ui.status('\n'.join(reversed(output))) | ||||