85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
# Copyright 2018 - Nokia
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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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from concurrent.futures import ThreadPoolExecutor
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from futurist import periodics
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from oslo_log import log
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from vitrage.datasources import utils
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from vitrage.common.constants import DatasourceAction
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from vitrage.common.utils import spawn
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from vitrage.entity_graph.consistency.consistency_enforcer import\
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ConsistencyEnforcer
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LOG = log.getLogger(__name__)
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class Scheduler(object):
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def __init__(self, conf, graph, driver_exec, persist):
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super(Scheduler, self).__init__()
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self.conf = conf
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self.graph = graph
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self.driver_exec = driver_exec
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self.persist = persist
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self.consistency = ConsistencyEnforcer(conf, graph)
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self.periodic = None
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def start_periodic_tasks(self):
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thread_num = len(utils.get_pull_drivers_names(self.conf))
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thread_num += 2 # for consistency and get_all
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self.periodic = periodics.PeriodicWorker.create(
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[], executor_factory=lambda: ThreadPoolExecutor(
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max_workers=thread_num))
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self._add_consistency_timer()
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self._add_datasource_timers()
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spawn(self.periodic.start)
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def _add_consistency_timer(self):
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spacing = self.conf.datasources.snapshots_interval
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@periodics.periodic(spacing=spacing)
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def consistency_periodic():
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try:
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self.consistency.periodic_process()
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except Exception:
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LOG.exception('run_consistency failed.')
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self.periodic.add(consistency_periodic)
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LOG.info("added consistency_periodic (spacing=%s)", spacing)
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def _add_datasource_timers(self):
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spacing = self.conf.datasources.snapshots_interval
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@periodics.periodic(spacing=spacing)
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def get_all_periodic():
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self.driver_exec.snapshot_get_all(DatasourceAction.SNAPSHOT)
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self.periodic.add(get_all_periodic)
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LOG.info("added get_all_periodic (spacing=%s)", spacing)
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driver_names = utils.get_pull_drivers_names(self.conf)
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for d_name in driver_names:
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spacing = self.conf[d_name].changes_interval
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@periodics.periodic(spacing=spacing)
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def get_changes_periodic():
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self.driver_exec.get_changes(d_name)
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self.periodic.add(get_changes_periodic)
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LOG.info("added get_changes_periodic %s (spacing=%s)",
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d_name, spacing)
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