61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
# Copyright 2011-2014 OpenStack Foundation,author: Min Wang,German Eichberger
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# Copyright 2015 Hewlett-Packard Development Company, L.P.
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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 abc
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from oslo_config import cfg
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from oslo_log import log as logging
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from stevedore import named as stevedore_named
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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_STATS_HANDLERS = None
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def _get_stats_handlers():
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global _STATS_HANDLERS
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if _STATS_HANDLERS is None:
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_STATS_HANDLERS = stevedore_named.NamedExtensionManager(
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namespace='octavia.statistics.drivers',
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names=CONF.controller_worker.statistics_drivers,
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invoke_on_load=True,
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propagate_map_exceptions=False
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)
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return _STATS_HANDLERS
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def update_stats_via_driver(listener_stats, deltas=False):
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"""Send listener stats to the enabled stats driver(s)
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:param listener_stats: A list of ListenerStatistics objects
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:type listener_stats: list
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:param deltas: Indicates whether the stats are deltas (false==absolute)
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:type deltas: bool
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"""
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handlers = _get_stats_handlers()
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handlers.map_method('update_stats', listener_stats, deltas=deltas)
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class StatsDriverMixin(object, metaclass=abc.ABCMeta):
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@abc.abstractmethod
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def update_stats(self, listener_stats, deltas=False):
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"""Return a stats object formatted for a generic backend
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:param listener_stats: A list of data_model.ListenerStatistics objects
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:type listener_stats: list
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:param deltas: Indicates whether the stats are deltas (false==absolute)
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:type deltas: bool
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"""
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