29b9c96a43
This makes zuul-launcher run the actual zuul v3 launcher rather than the zuul v2.5 ansible launcher. It also cleans up the shutdown process a bit. Change-Id: Iedb1c23c3cb46090859c520e10043f0b7083a862
127 lines
4.1 KiB
Python
127 lines
4.1 KiB
Python
#!/usr/bin/env python
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# Copyright 2012 Hewlett-Packard Development Company, L.P.
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# Copyright 2013-2014 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import argparse
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import daemon
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import extras
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# as of python-daemon 1.6 it doesn't bundle pidlockfile anymore
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# instead it depends on lockfile-0.9.1 which uses pidfile.
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pid_file_module = extras.try_imports(['daemon.pidlockfile', 'daemon.pidfile'])
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import logging
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import os
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import socket
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import sys
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import signal
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import zuul.cmd
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import zuul.launcher.server
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# No zuul imports that pull in paramiko here; it must not be
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# imported until after the daemonization.
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# https://github.com/paramiko/paramiko/issues/59
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# Similar situation with gear and statsd.
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class Launcher(zuul.cmd.ZuulApp):
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def parse_arguments(self):
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parser = argparse.ArgumentParser(description='Zuul launch worker.')
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parser.add_argument('-c', dest='config',
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help='specify the config file')
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parser.add_argument('-d', dest='nodaemon', action='store_true',
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help='do not run as a daemon')
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parser.add_argument('--version', dest='version', action='version',
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version=self._get_version(),
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help='show zuul version')
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parser.add_argument('--keep-jobdir', dest='keep_jobdir',
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action='store_true',
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help='keep local jobdirs after run completes')
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parser.add_argument('command',
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choices=zuul.launcher.server.COMMANDS,
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nargs='?')
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self.args = parser.parse_args()
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def send_command(self, cmd):
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if self.config.has_option('zuul', 'state_dir'):
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state_dir = os.path.expanduser(
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self.config.get('zuul', 'state_dir'))
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else:
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state_dir = '/var/lib/zuul'
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path = os.path.join(state_dir, 'launcher.socket')
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s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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s.connect(path)
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s.sendall('%s\n' % cmd)
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def exit_handler(self):
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self.launcher.stop()
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self.launcher.join()
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def main(self, daemon=True):
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# See comment at top of file about zuul imports
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self.setup_logging('launcher', 'log_config')
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self.log = logging.getLogger("zuul.Launcher")
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LaunchServer = zuul.launcher.server.LaunchServer
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self.launcher = LaunchServer(self.config, self.connections,
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keep_jobdir=self.args.keep_jobdir)
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self.launcher.start()
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signal.signal(signal.SIGUSR2, zuul.cmd.stack_dump_handler)
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if daemon:
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self.launcher.join()
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else:
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while True:
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try:
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signal.pause()
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except KeyboardInterrupt:
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print("Ctrl + C: asking launcher to exit nicely...\n")
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self.exit_handler()
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sys.exit(0)
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def main():
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server = Launcher()
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server.parse_arguments()
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server.read_config()
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if server.args.command in zuul.launcher.server.COMMANDS:
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server.send_command(server.args.command)
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sys.exit(0)
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server.configure_connections()
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if server.config.has_option('launcher', 'pidfile'):
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pid_fn = os.path.expanduser(server.config.get('launcher', 'pidfile'))
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else:
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pid_fn = '/var/run/zuul-launcher/zuul-launcher.pid'
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pid = pid_file_module.TimeoutPIDLockFile(pid_fn, 10)
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if server.args.nodaemon:
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server.main(False)
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else:
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with daemon.DaemonContext(pidfile=pid):
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server.main(True)
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if __name__ == "__main__":
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sys.path.insert(0, '.')
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main()
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