Mercurial > hg
view mercurial/loggingutil.py @ 42924:e0bf41b83cef
exchange: avoid unnecessary conversion of bookmark nodes to hex (API)
Differential Revision: https://phab.mercurial-scm.org/D6830
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
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date | Sun, 08 Sep 2019 20:10:32 -0400 |
parents | 96be0ecad648 |
children | 2372284d9457 |
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# loggingutil.py - utility for logging events # # 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. from __future__ import absolute_import import errno from . import ( pycompat, ) from .utils import ( dateutil, procutil, stringutil, ) def openlogfile(ui, vfs, name, maxfiles=0, maxsize=0): """Open log file in append mode, with optional rotation If maxsize > 0, the log file will be rotated up to maxfiles. """ def rotate(oldpath, newpath): try: vfs.unlink(newpath) except OSError as err: if err.errno != errno.ENOENT: ui.debug("warning: cannot remove '%s': %s\n" % (newpath, err.strerror)) try: if newpath: vfs.rename(oldpath, newpath) except OSError as err: if err.errno != errno.ENOENT: ui.debug("warning: cannot rename '%s' to '%s': %s\n" % (newpath, oldpath, err.strerror)) if maxsize > 0: try: st = vfs.stat(name) except OSError: pass else: if st.st_size >= maxsize: path = vfs.join(name) for i in pycompat.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') return vfs(name, 'a', makeparentdirs=False) def _formatlogline(msg): date = dateutil.datestr(format=b'%Y/%m/%d %H:%M:%S') pid = procutil.getpid() return b'%s (%d)> %s' % (date, pid, msg) def _matchevent(event, tracked): return b'*' in tracked or event in tracked class filelogger(object): """Basic logger backed by physical file with optional rotation""" def __init__(self, vfs, name, tracked, maxfiles=0, maxsize=0): self._vfs = vfs self._name = name self._trackedevents = set(tracked) self._maxfiles = maxfiles self._maxsize = maxsize def tracked(self, event): return _matchevent(event, self._trackedevents) def log(self, ui, event, msg, opts): line = _formatlogline(msg) try: with openlogfile(ui, self._vfs, self._name, maxfiles=self._maxfiles, maxsize=self._maxsize) as fp: fp.write(line) except IOError as err: ui.debug(b'cannot write to %s: %s\n' % (self._name, stringutil.forcebytestr(err))) class fileobjectlogger(object): """Basic logger backed by file-like object""" def __init__(self, fp, tracked): self._fp = fp self._trackedevents = set(tracked) def tracked(self, event): return _matchevent(event, self._trackedevents) def log(self, ui, event, msg, opts): line = _formatlogline(msg) try: self._fp.write(line) self._fp.flush() except IOError as err: ui.debug(b'cannot write to %s: %s\n' % (stringutil.forcebytestr(self._fp.name), stringutil.forcebytestr(err))) class proxylogger(object): """Forward log events to another logger to be set later""" def __init__(self): self.logger = None def tracked(self, event): return self.logger is not None and self.logger.tracked(event) def log(self, ui, event, msg, opts): assert self.logger is not None self.logger.log(ui, event, msg, opts)