128 lines
4.7 KiB
Python
Executable File
128 lines
4.7 KiB
Python
Executable File
# Copyright 2012 Hewlett-Packard Development Company, L.P.
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# Copyright 2013 OpenStack Foundation
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# Copyright 2021-2022 Acme Gating, LLC
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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 logging
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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.scheduler
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class Scheduler(zuul.cmd.ZuulDaemonApp):
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app_name = 'scheduler'
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app_description = 'The main zuul process.'
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def __init__(self):
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super(Scheduler, self).__init__()
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def createParser(self):
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parser = super(Scheduler, self).createParser()
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parser.add_argument('--validate-tenants', dest='validate_tenants',
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metavar='TENANT', nargs='*',
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help='Load configuration of the listed tenants and'
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' exit afterwards, indicating success or '
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'failure via the exit code. If no tenant is '
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'listed, all tenants will be validated. '
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'Note: this requires ZooKeeper and '
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'will distribute work to mergers.')
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parser.add_argument('--wait-for-init', dest='wait_for_init',
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action='store_true',
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help='Wait until all tenants are fully loaded '
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'before beginning to process events.')
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self.addSubCommands(parser, zuul.scheduler.COMMANDS)
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return parser
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def fullReconfigure(self):
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self.log.debug("Reconfiguration triggered")
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self.readConfig()
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self.setup_logging('scheduler', 'log_config')
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try:
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self.sched.reconfigure(self.config)
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except Exception:
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self.log.exception("Reconfiguration failed:")
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def smartReconfigure(self):
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self.log.debug("Smart reconfiguration triggered")
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self.readConfig()
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self.setup_logging('scheduler', 'log_config')
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try:
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self.sched.reconfigure(self.config, smart=True)
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except Exception:
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self.log.exception("Reconfiguration failed:")
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def tenantReconfigure(self, tenants):
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self.log.debug("Tenant reconfiguration triggered")
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self.readConfig()
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self.setup_logging('scheduler', 'log_config')
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try:
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self.sched.reconfigure(self.config, smart=False, tenants=tenants)
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except Exception:
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self.log.exception("Reconfiguration failed:")
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def exit_handler(self, signum, frame):
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self.sched.stop()
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self.sched.join()
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def run(self):
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self.handleCommands()
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self.setup_logging('scheduler', 'log_config')
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self.log = logging.getLogger("zuul.Scheduler")
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self.configure_connections(require_sql=True)
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self.sched = zuul.scheduler.Scheduler(self.config,
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self.connections, self,
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self.args.wait_for_init)
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if self.args.validate_tenants is None:
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self.connections.registerScheduler(self.sched)
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self.connections.load(self.sched.zk_client,
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self.sched.component_registry)
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self.log.info('Starting scheduler')
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try:
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self.sched.start()
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if self.args.validate_tenants is not None:
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self.sched.validateTenants(
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self.config, self.args.validate_tenants)
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else:
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self.sched.prime(self.config)
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except Exception:
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self.log.exception("Error starting Zuul:")
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# TODO(jeblair): If we had all threads marked as daemon,
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# we might be able to have a nicer way of exiting here.
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self.sched.stop()
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sys.exit(1)
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if self.args.validate_tenants is not None:
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self.sched.stop()
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sys.exit(0)
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if self.args.nodaemon:
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signal.signal(signal.SIGTERM, self.exit_handler)
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while True:
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try:
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self.sched.join()
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break
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except KeyboardInterrupt:
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print("Ctrl + C: asking scheduler to exit nicely...\n")
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self.exit_handler(signal.SIGINT, None)
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def main():
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Scheduler().main()
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