remail/remail_daemon

#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-only
# Copyright Thomas Gleixner <tglx@linutronix.de>
#

from remail.utils import logger
from remail.version import __version__
from remail.remaild import remaild

from argparse import ArgumentParser

import sys
import os

def exit_daemon(logger, res):
    logger.log('Stopped\n')
    sys.exit(res)

if __name__ == '__main__':
    parser = ArgumentParser(description='remail daemon')
    parser.add_argument('config', help='Config file')
    parser.add_argument('--syslog', '-s', dest='syslog', action='store_true',
                        help='Use syslog for logging. Default is stderr')
    parser.add_argument('--verbose', '-v', dest='verbose', action='store_true',
                        help='Verbose logging')
    parser.add_argument('--version', '-V', action='version',
                        version='%(prog)s {version}'.format(version=__version__))
    args = parser.parse_args()

    logger = logger(use_syslog=args.syslog, verbose=args.verbose)
    logger.log("Started\n")

    # Change into the directory in which the config file resides
    wdir = os.path.dirname(args.config)
    if len(wdir):
        os.chdir(wdir)
        args.config = os.path.basename(args.config)

    try:
        rd = remaild(args.config, logger)
    except Exception as ex:
        '''
        Exceptions which reach here are fatal
        '''
        logger.log_exception('', ex, verbose=True)
        exit_daemon(logger, 11)

    try:
        res = rd.run()
    except Exception as ex:
        '''
        Exceptions which reach here are fatal
        '''
        logger.log_exception('', ex, verbose=True)
        res = 12

    exit_daemon(logger, res)