Mercurial > hg
view hgext/logtoprocess.py @ 40747:380a1f73830f
perf: disable revlogs clearing in `perftags` by default
This aligns things with what `perfbookmarks` does. I decided to disable the
revlogs clearing by default to focus on the core logic by default, ignoring
side effects.
If we prefer to emphasize the side effect, we can instead keep this on in
`perftags` and enable it by default in `perfbookmarks`.
author | Boris Feld <boris.feld@octobus.net> |
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date | Tue, 20 Nov 2018 17:44:24 +0000 |
parents | 55b053af7196 |
children | ffd574c144d2 |
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# logtoprocess.py - send ui.log() data to a subprocess # # Copyright 2016 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. """send ui.log() data to a subprocess (EXPERIMENTAL) This extension lets you specify a shell command per ui.log() event, sending all remaining arguments to as environment variables to that command. Positional arguments construct a log message, which is passed in the `MSG1` environment variables. Each keyword argument is set as a `OPT_UPPERCASE_KEY` variable (so the key is uppercased, and prefixed with `OPT_`). The original event name is passed in the `EVENT` environment variable, and the process ID of mercurial is given in `HGPID`. So given a call `ui.log('foo', 'bar %s\n', 'baz', spam='eggs'), a script configured for the `foo` event can expect an environment with `MSG1=bar baz`, and `OPT_SPAM=eggs`. Scripts are configured in the `[logtoprocess]` section, each key an event name. For example:: [logtoprocess] commandexception = echo "$MSG1" > /var/log/mercurial_exceptions.log would log the warning message and traceback of any failed command dispatch. Scripts are run asynchronously as detached daemon processes; mercurial will not ensure that they exit cleanly. """ from __future__ import absolute_import import os from mercurial import ( pycompat, ) from mercurial.utils import ( procutil, ) # 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' class processlogger(object): """Map log events to external commands Arguments are passed on as environment variables. """ def __init__(self, ui): self._scripts = dict(ui.configitems(b'logtoprocess')) def tracked(self, event): return bool(self._scripts.get(event)) def log(self, ui, event, msg, opts): script = self._scripts[event] env = { b'EVENT': event, b'HGPID': os.getpid(), b'MSG1': msg[0] % msg[1:], } # keyword arguments get prefixed with OPT_ and uppercased env.update((b'OPT_%s' % key.upper(), value) for key, value in pycompat.byteskwargs(opts).items()) fullenv = procutil.shellenviron(env) procutil.runbgcommand(script, fullenv, shell=True) def uipopulate(ui): ui.setlogger(b'logtoprocess', processlogger(ui))