mirror of
https://github.com/jlu5/PyLink.git
synced 2024-11-01 01:09:22 +01:00
113 lines
4.8 KiB
Python
113 lines
4.8 KiB
Python
#!/usr/bin/env python3
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"""
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PyLink IRC Services launcher.
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"""
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import os
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import sys
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from pylinkirc import world, conf, __version__, real_version
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try:
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import psutil
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except ImportError:
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psutil = None
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def main():
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import argparse
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parser = argparse.ArgumentParser(description='Starts an instance of PyLink IRC Services.')
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parser.add_argument('config', help='specifies the path to the config file (defaults to pylink.yml)', nargs='?', default='pylink.yml')
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parser.add_argument("-v", "--version", help="displays the program version and exits", action='store_true')
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parser.add_argument("-c", "--check-pid", help="no-op; kept for compatiblity with PyLink 1.x", action='store_true')
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parser.add_argument("-n", "--no-pid", help="skips generating and checking PID files", action='store_true')
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args = parser.parse_args()
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if args.version: # Display version and exit
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print('PyLink %s (in VCS: %s)' % (__version__, real_version))
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sys.exit()
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# FIXME: we can't pass logging on to conf until we set up the config...
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conf.loadConf(args.config)
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from pylinkirc.log import log
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from pylinkirc import classes, utils, coremods
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log.info('PyLink %s starting...', __version__)
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# Set terminal window title. See https://bbs.archlinux.org/viewtopic.php?id=85567
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# and https://stackoverflow.com/questions/7387276/
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if os.name == 'nt':
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import ctypes
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ctypes.windll.kernel32.SetConsoleTitleW("PyLink %s" % __version__)
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elif os.name == 'posix':
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sys.stdout.write("\x1b]2;PyLink %s\x07" % __version__)
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# Write and check for an existing PID file unless specifically told not to.
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if not args.no_pid:
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pidfile = '%s.pid' % conf.confname
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if os.path.exists(pidfile):
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has_stale_pid = False
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if psutil is not None and os.name == 'posix':
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# FIXME: Haven't tested this on other platforms, so not turning it on by default.
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with open(pidfile) as f:
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try:
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pid = int(f.read())
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proc = psutil.Process(pid)
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except psutil.NoSuchProcess: # Process doesn't exist!
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has_stale_pid = True
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log.info("Ignoring stale PID %s from PID file %r: no such process exists.", pid, pidfile)
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else:
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# This PID got reused for something that isn't us?
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if not any('pylink' in arg.lower() for arg in proc.cmdline()):
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log.info("Ignoring stale PID %s from PID file %r: process command line %r is not us", pid, pidfile, proc.cmdline())
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has_stale_pid = True
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if not has_stale_pid:
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log.error("PID file exists %r; aborting!", pidfile)
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if psutil is None:
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log.error("If PyLink didn't shut down cleanly last time it ran, or you're upgrading "
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"from PyLink < 1.1-dev, delete %r and start the server again.", pidfile)
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if os.name == 'posix':
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log.error("Alternatively, you can install psutil for Python 3 (pip3 install psutil), "
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"which will allow this launcher to detect stale PID files and ignore them.")
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sys.exit(1)
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with open(pidfile, 'w') as f:
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f.write(str(os.getpid()))
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world._should_remove_pid = True
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# Import plugins first globally, because they can listen for events
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# that happen before the connection phase.
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to_load = conf.conf['plugins']
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utils.resetModuleDirs()
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# Here, we override the module lookup and import the plugins
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# dynamically depending on which were configured.
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for plugin in to_load:
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try:
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world.plugins[plugin] = pl = utils.loadPlugin(plugin)
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except Exception as e:
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log.exception('Failed to load plugin %r: %s: %s', plugin, type(e).__name__, str(e))
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else:
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if hasattr(pl, 'main'):
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log.debug('Calling main() function of plugin %r', pl)
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pl.main()
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# Initialize all the networks one by one
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for network, sdata in conf.conf['servers'].items():
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try:
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protoname = sdata['protocol']
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except (KeyError, TypeError):
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log.error("(%s) Configuration error: No protocol module specified, aborting.", network)
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else:
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# Fetch the correct protocol module.
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proto = utils.getProtocolModule(protoname)
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# Create and connect the network.
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world.networkobjects[network] = irc = proto.Class(network)
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log.debug('Connecting to network %r', network)
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irc.connect()
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world.started.set()
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log.info("Loaded plugins: %s", ', '.join(sorted(world.plugins.keys())))
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