|
|
# 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.
|
|
|
|
|
|
Each positional argument to the method results in a `MSG[N]` key in the
|
|
|
environment, starting at 1 (so `MSG1`, `MSG2`, etc.). 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', 'baz', spam='eggs'), a script configured
|
|
|
for the `foo` event can expect an environment with `MSG1=bar`, `MSG2=baz`, and
|
|
|
`OPT_SPAM=eggs`.
|
|
|
|
|
|
Scripts are configured in the `[logtoprocess]` section, each key an event name.
|
|
|
For example::
|
|
|
|
|
|
[logtoprocess]
|
|
|
commandexception = echo "$MSG2$MSG3" > /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'
|
|
|
|
|
|
def uisetup(ui):
|
|
|
|
|
|
class logtoprocessui(ui.__class__):
|
|
|
def log(self, event, *msg, **opts):
|
|
|
"""Map log events to external commands
|
|
|
|
|
|
Arguments are passed on as environment variables.
|
|
|
|
|
|
"""
|
|
|
script = self.config('logtoprocess', event)
|
|
|
if script:
|
|
|
if msg:
|
|
|
# try to format the log message given the remaining
|
|
|
# arguments
|
|
|
try:
|
|
|
# Format the message as blackbox does
|
|
|
formatted = msg[0] % msg[1:]
|
|
|
except (TypeError, KeyError):
|
|
|
# Failed to apply the arguments, ignore
|
|
|
formatted = msg[0]
|
|
|
messages = (formatted,) + msg[1:]
|
|
|
else:
|
|
|
messages = msg
|
|
|
env = {
|
|
|
b'EVENT': event,
|
|
|
b'HGPID': os.getpid(),
|
|
|
}
|
|
|
# positional arguments are listed as MSG[N] keys in the
|
|
|
# environment
|
|
|
env.update((b'MSG%d' % i, m) for i, m in enumerate(messages, 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)
|
|
|
return super(logtoprocessui, self).log(event, *msg, **opts)
|
|
|
|
|
|
# Replace the class for this instance and all clones created from it:
|
|
|
ui.__class__ = logtoprocessui
|
|
|
|