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# Copyright 2019 BMW Group
#
# 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.
import logging
import threading
import traceback
import gear
from zuul.lib.config import get_default
class ZuulGearWorker:
def __init__(self, name, logger_name, thread_name, config, jobs,
worker_class=gear.TextWorker, worker_args=None):
self.log = logging.getLogger(logger_name)
self._running = True
self.name = name
self.worker_class = worker_class
self.worker_args = worker_args if worker_args is not None else []
self.server = config.get('gearman', 'server')
self.port = get_default(config, 'gearman', 'port', 4730)
self.ssl_key = get_default(config, 'gearman', 'ssl_key')
self.ssl_cert = get_default(config, 'gearman', 'ssl_cert')
self.ssl_ca = get_default(config, 'gearman', 'ssl_ca')
self.gearman = None
self.jobs = jobs
self.thread = threading.Thread(target=self._run, name=thread_name)
self.thread.daemon = True
def start(self):
gear_args = self.worker_args + [self.name]
self.gearman = self.worker_class(*gear_args)
self.log.debug('Connect to gearman')
self.gearman.addServer(self.server, self.port, self.ssl_key,
self.ssl_cert, self.ssl_ca,
keepalive=True, tcp_keepidle=60,
tcp_keepintvl=30, tcp_keepcnt=5)
self.log.debug('Waiting for gearman')
self.gearman.waitForServer()
self.register()
self.thread.start()
def register(self):
self.log.debug('Registering %s jobs' % len(self.jobs))
for job in self.jobs:
self.gearman.registerFunction(job)
def unregister(self):
self.log.debug('Unregistering all jobs (%s)' % len(self.jobs))
for job in self.jobs:
self.gearman.unRegisterFunction(job)
def stop(self):
self._running = False
self.gearman.stopWaitingForJobs()
self.thread.join()
self.gearman.shutdown()
def join(self):
self.thread.join()
def _run(self):
while self._running:
try:
job = self.gearman.getJob()
try:
if job.name not in self.jobs:
self.log.exception("Exception while running job")
job.sendWorkException(
traceback.format_exc().encode('utf8'))
continue
self.jobs[job.name](job)
except Exception:
self.log.exception('Exception while running job')
job.sendWorkException(
traceback.format_exc().encode('utf-8'))
except gear.InterruptedError:
pass
except Exception:
self.log.exception('Exception while getting job')
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