# octavia.statistics.stats_base

# Source code for octavia.statistics.stats_base

    # Copyright 2011-2014 OpenStack Foundation,author: Min Wang,German Eichberger
    # 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.

    import abc

    from oslo_config import cfg
    from oslo_log import log as logging
    from stevedore import named as stevedore_named

    CONF = cfg.CONF
    LOG = logging.getLogger(__name__)
    _STATS_HANDLERS = None

    def _get_stats_handlers():
        global _STATS_HANDLERS
        if _STATS_HANDLERS is None:
            _STATS_HANDLERS = stevedore_named.NamedExtensionManager(
                namespace='octavia.statistics.drivers',
                names=CONF.controller_worker.statistics_drivers,
                invoke_on_load=True,
                propagate_map_exceptions=False
            )
        return _STATS_HANDLERS

    def update_stats_via_driver(listener_stats, deltas=False):
        """Send listener stats to the enabled stats driver(s)

        :param listener_stats: A list of ListenerStatistics objects
        :type listener_stats: list
        :param deltas: Indicates whether the stats are deltas (false==absolute)
        :type deltas: bool
        """
        handlers = _get_stats_handlers()
        handlers.map_method('update_stats', listener_stats, deltas=deltas)

    class StatsDriverMixin(metaclass=abc.ABCMeta):

        @abc.abstractmethod
        def update_stats(self, listener_stats, deltas=False):
            """Return a stats object formatted for a generic backend

            :param listener_stats: A list of data_model.ListenerStatistics objects
            :type listener_stats: list
            :param deltas: Indicates whether the stats are deltas (false==absolute)
            :type deltas: bool
            """

this page last updated: 2025-04-03 17:35:57

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