Mercurial > hg
view hgext/blackbox.py @ 27093:41d3e307a7c1
format: create new repository as 'generaldelta' by default
Since we have pushed back the performance issue related to general delta behind
another configuration (Still off by default), we can safely create new
repository with general delta support. As client are compatible with it since
Mercurial 1.9 (4.5 years ago) I do no expect any significant compatibility
issues.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Mon, 02 Nov 2015 17:33:18 +0000 |
parents | e8f9dffca36f |
children | ab6468270b83 |
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# blackbox.py - log repository events to a file for post-mortem debugging # # Copyright 2010 Nicolas Dumazet # 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. Examples:: [blackbox] track = * [blackbox] track = command, commandfinish, commandexception, exthook, pythonhook [blackbox] track = incoming [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 """ from mercurial import util, cmdutil from mercurial.i18n import _ import errno, os, re cmdtable = {} command = cmdutil.command(cmdtable) # 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. testedwith = 'internal' lastblackbox = None def wrapui(ui): class blackboxui(ui.__class__): @util.propertycache def track(self): return self.configlist('blackbox', 'track', ['*']) def _openlogfile(self): def rotate(oldpath, newpath): try: os.unlink(newpath) except OSError as 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 as 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 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 elif util.safehasattr(self, '_bbopener'): try: self._blackbox = self._openlogfile() except (IOError, OSError) as err: self.debug('warning: cannot write to blackbox.log: %s\n' % err.strerror) del self._bbopener self._blackbox = None blackbox = self._blackbox 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') user = util.getuser() pid = str(os.getpid()) formattedmsg = msg[0] % msg[1:] try: blackbox.write('%s %s (%s)> %s' % (date, user, pid, formattedmsg)) except IOError as err: self.debug('warning: cannot write to blackbox.log: %s\n' % err.strerror) lastblackbox = blackbox def setrepo(self, repo): self._bbopener = repo.vfs 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 if util.safehasattr(ui, 'setrepo'): ui.setrepo(repo) @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') blackbox = repo.vfs('blackbox.log', 'r') 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)))