Rodolfo Alonso Hernandez
aa18156e29
Introduce ``log_worker_lifecycle`` in ``neutron.common.utils`` to log when worker start, wait, stop, and reset methods are called and finished. Apply it to ``PeriodicWorker``, ``RpcWorker``, ``AllServicesNeutronWorker`` and ``BGPWorker``, so operators can trace child process behavior at DEBUG level. Related-Bug: #2154192 Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@redhat.com> Change-Id: Iaac0993da9ecf0d1b587bb8c01e3683a0994b7c2
69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
# 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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from neutron_lib import worker
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from oslo_config import cfg
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from oslo_service import loopingcall
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from neutron.common import utils as common_utils
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class NeutronBaseWorker(worker.BaseWorker):
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def __init__(self, worker_process_count=1, set_proctitle=None,
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desc=None):
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set_proctitle = set_proctitle or cfg.CONF.setproctitle
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super().__init__(
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worker_process_count=worker_process_count,
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set_proctitle=set_proctitle,
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desc=desc,
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)
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def start(self, name="neutron-server", desc=None):
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super().start(name=name, desc=desc)
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class PeriodicWorker(NeutronBaseWorker):
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"""A worker that runs a function at a fixed interval."""
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def __init__(self, check_func, interval, initial_delay,
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desc=None):
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super().__init__(worker_process_count=0, desc=desc)
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self._check_func = check_func
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self._loop = None
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self._interval = interval
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self._initial_delay = initial_delay
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@common_utils.log_worker_lifecycle(lambda self: self.desc)
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def start(self, **kwargs):
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super().start()
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if self._loop is None:
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self._loop = loopingcall.FixedIntervalLoopingCall(
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f=self._check_func)
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self._loop.start(interval=self._interval,
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initial_delay=self._initial_delay)
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@common_utils.log_worker_lifecycle(lambda self: self.desc)
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def wait(self):
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if self._loop is not None:
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self._loop.wait()
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@common_utils.log_worker_lifecycle(lambda self: self.desc)
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def stop(self):
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if self._loop is not None:
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self._loop.stop()
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@common_utils.log_worker_lifecycle(lambda self: self.desc)
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def reset(self):
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self.stop()
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self.wait()
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self.start()
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