Mercurial > hg
view hgext/blackbox.py @ 30381:caba61934721
shelve: move commitfunc creation to a separate function
Special commitfuncs are created as closures at least twice in shelve's
code and one time special commitfunc is used within another closure.
They all serve very specific purposes like temporarily tweak some
configuration or enable editor, etc. This is not immediately important
to someone reading shelve code, so I think moving this logic to a separate
function is a good idea.
author | Kostia Balytskyi <ikostia@fb.com> |
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date | Thu, 10 Nov 2016 03:26:31 -0800 |
parents | d5883fd055c6 |
children | 055cca8e167b |
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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 = * # dirty is *EXPENSIVE* (slow); # each log entry indicates `+` if the repository is dirty, like :hg:`id`. dirty = True # record the source of log messages logsource = True [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 __future__ import absolute_import import errno import re from mercurial.i18n import _ from mercurial.node import hex from mercurial import ( cmdutil, ui as uimod, util, ) cmdtable = {} command = cmdutil.command(cmdtable) # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' 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 = 'ships-with-hg-core' lastui = None filehandles = {} def _openlog(vfs): path = vfs.join('blackbox.log') if path in filehandles: return filehandles[path] filehandles[path] = fp = vfs('blackbox.log', 'a') return fp def _closelog(vfs): path = vfs.join('blackbox.log') fp = filehandles[path] del filehandles[path] fp.close() def wrapui(ui): class blackboxui(ui.__class__): def __init__(self, src=None): super(blackboxui, self).__init__(src) if src is None: self._partialinit() else: self._bbfp = getattr(src, '_bbfp', None) self._bbinlog = False self._bbrepo = getattr(src, '_bbrepo', None) self._bbvfs = getattr(src, '_bbvfs', None) def _partialinit(self): if util.safehasattr(self, '_bbvfs'): return self._bbfp = None self._bbinlog = False self._bbrepo = None self._bbvfs = None def copy(self): self._partialinit() return self.__class__(self) @util.propertycache def track(self): return self.configlist('blackbox', 'track', ['*']) def _openlogfile(self): def rotate(oldpath, newpath): try: self._bbvfs.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: self._bbvfs.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 = _openlog(self._bbvfs) maxsize = self.configbytes('blackbox', 'maxsize', 1048576) if maxsize > 0: st = self._bbvfs.fstat(fp) if st.st_size >= maxsize: path = fp.name _closelog(self._bbvfs) 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 = _openlog(self._bbvfs) return fp def _bbwrite(self, fmt, *args): self._bbfp.write(fmt % args) self._bbfp.flush() def log(self, event, *msg, **opts): global lastui super(blackboxui, self).log(event, *msg, **opts) self._partialinit() if not '*' in self.track and not event in self.track: return if self._bbfp: ui = self elif self._bbvfs: try: self._bbfp = self._openlogfile() except (IOError, OSError) as err: self.debug('warning: cannot write to blackbox.log: %s\n' % err.strerror) del self._bbvfs self._bbfp = None ui = self else: # certain ui instances exist outside the context of # a repo, so just default to the last blackbox that # was seen. ui = lastui if not ui or not ui._bbfp: return if not lastui or ui._bbrepo: lastui = ui if ui._bbinlog: # recursion guard return try: ui._bbinlog = True date = util.datestr(None, '%Y/%m/%d %H:%M:%S') user = util.getuser() pid = str(util.getpid()) formattedmsg = msg[0] % msg[1:] rev = '(unknown)' changed = '' if ui._bbrepo: ctx = ui._bbrepo[None] parents = ctx.parents() rev = ('+'.join([hex(p.node()) for p in parents])) if (ui.configbool('blackbox', 'dirty', False) and ( any(ui._bbrepo.status()) or any(ctx.sub(s).dirty() for s in ctx.substate) )): changed = '+' if ui.configbool('blackbox', 'logsource', False): src = ' [%s]' % event else: src = '' try: ui._bbwrite('%s %s @%s%s (%s)%s> %s', date, user, rev, changed, pid, src, formattedmsg) except IOError as err: self.debug('warning: cannot write to blackbox.log: %s\n' % err.strerror) finally: ui._bbinlog = False def setrepo(self, repo): self._bbfp = None self._bbinlog = False self._bbrepo = repo self._bbvfs = repo.vfs ui.__class__ = blackboxui uimod.ui = 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 repo.vfs.exists('blackbox.log'): return limit = opts.get('limit') fp = repo.vfs('blackbox.log', 'r') lines = fp.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)))