128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
# Copyright 2015 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
#
|
|
|
|
from functools import partial
|
|
import multiprocessing
|
|
import os
|
|
import signal
|
|
import sys
|
|
|
|
from futurist import periodics
|
|
|
|
from oslo_config import cfg
|
|
from oslo_log import log as logging
|
|
from oslo_reports import guru_meditation_report as gmr
|
|
|
|
from octavia.amphorae.drivers.health import heartbeat_udp
|
|
from octavia.common import service
|
|
from octavia.controller.healthmanager import health_manager
|
|
from octavia import version
|
|
|
|
|
|
CONF = cfg.CONF
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def _mutate_config(*args, **kwargs):
|
|
CONF.mutate_config_files()
|
|
|
|
|
|
def hm_listener(exit_event):
|
|
signal.signal(signal.SIGINT, signal.SIG_IGN)
|
|
signal.signal(signal.SIGHUP, _mutate_config)
|
|
udp_getter = heartbeat_udp.UDPStatusGetter()
|
|
while not exit_event.is_set():
|
|
try:
|
|
udp_getter.check()
|
|
except Exception as e:
|
|
LOG.error('Health Manager listener experienced unknown error: %s',
|
|
e)
|
|
LOG.info('Waiting for executor to shutdown...')
|
|
udp_getter.health_executor.shutdown()
|
|
udp_getter.stats_executor.shutdown()
|
|
LOG.info('Executor shutdown finished.')
|
|
|
|
|
|
def hm_health_check(exit_event):
|
|
hm = health_manager.HealthManager(exit_event)
|
|
signal.signal(signal.SIGHUP, _mutate_config)
|
|
|
|
@periodics.periodic(CONF.health_manager.health_check_interval,
|
|
run_immediately=True)
|
|
def periodic_health_check():
|
|
hm.health_check()
|
|
|
|
health_check = periodics.PeriodicWorker(
|
|
[(periodic_health_check, None, None)],
|
|
schedule_strategy='aligned_last_finished')
|
|
|
|
def hm_exit(*args, **kwargs):
|
|
health_check.stop()
|
|
hm.executor.shutdown()
|
|
signal.signal(signal.SIGINT, hm_exit)
|
|
LOG.debug("Pausing before starting health check")
|
|
exit_event.wait(CONF.health_manager.heartbeat_timeout)
|
|
health_check.start()
|
|
|
|
|
|
def _handle_mutate_config(listener_proc_pid, check_proc_pid, *args, **kwargs):
|
|
LOG.info("Health Manager recieved HUP signal, mutating config.")
|
|
_mutate_config()
|
|
os.kill(listener_proc_pid, signal.SIGHUP)
|
|
os.kill(check_proc_pid, signal.SIGHUP)
|
|
|
|
|
|
def main():
|
|
service.prepare_service(sys.argv)
|
|
|
|
gmr.TextGuruMeditation.setup_autorun(version)
|
|
|
|
processes = []
|
|
exit_event = multiprocessing.Event()
|
|
|
|
hm_listener_proc = multiprocessing.Process(name='HM_listener',
|
|
target=hm_listener,
|
|
args=(exit_event,))
|
|
processes.append(hm_listener_proc)
|
|
hm_health_check_proc = multiprocessing.Process(name='HM_health_check',
|
|
target=hm_health_check,
|
|
args=(exit_event,))
|
|
processes.append(hm_health_check_proc)
|
|
|
|
LOG.info("Health Manager listener process starts:")
|
|
hm_listener_proc.start()
|
|
LOG.info("Health manager check process starts:")
|
|
hm_health_check_proc.start()
|
|
|
|
def process_cleanup(*args, **kwargs):
|
|
LOG.info("Health Manager exiting due to signal")
|
|
exit_event.set()
|
|
os.kill(hm_health_check_proc.pid, signal.SIGINT)
|
|
hm_health_check_proc.join()
|
|
hm_listener_proc.join()
|
|
|
|
signal.signal(signal.SIGTERM, process_cleanup)
|
|
signal.signal(signal.SIGHUP, partial(
|
|
_handle_mutate_config, hm_listener_proc.pid, hm_health_check_proc.pid))
|
|
|
|
try:
|
|
for process in processes:
|
|
process.join()
|
|
except KeyboardInterrupt:
|
|
process_cleanup()
|
|
|
|
if __name__ == "__main__":
|
|
main()
|