91 lines
3.3 KiB
Python
91 lines
3.3 KiB
Python
# Copyright 2016 Internap.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo_log import log as logging
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from oslo_service import service
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from almanach.collector.filters import delete_instance_before_completion_filter
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from almanach.collector.filters import errored_instance_filter
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from almanach.collector.handlers import instance_handler
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from almanach.collector.handlers import volume_handler
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from almanach.collector.handlers import volume_type_handler
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from almanach.collector import messaging
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from almanach.collector import notification
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LOG = logging.getLogger(__name__)
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class CollectorService(service.ServiceBase):
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def __init__(self, listeners, thread_pool_size):
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super(CollectorService, self).__init__()
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self.listeners = listeners
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self.thread_pool_size = thread_pool_size
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self.started = False
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def start(self):
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LOG.info('Starting collector listeners...')
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for listener in self.listeners:
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listener.start(override_pool_size=self.thread_pool_size)
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self.started = True
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def wait(self):
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LOG.info('Waiting...')
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def stop(self):
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if self.started:
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LOG.info('Graceful shutdown of the collector service...')
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for listener in self.listeners:
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listener.stop()
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else:
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LOG.info('Shutdown collector (not started successfully)')
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def reset(self):
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pass
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class ServiceFactory(object):
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def __init__(self, config, core_factory):
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self.config = config
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self.core_factory = core_factory
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def get_service(self):
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messaging_factory = messaging.MessagingFactory(self.config)
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notification_handler = notification.NotificationHandler(self.config, messaging_factory)
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notification_handler.add_event_handler(self.get_instance_handler())
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notification_handler.add_event_handler(self.get_volume_handler())
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notification_handler.add_event_handler(self.get_volume_type_handler())
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listeners = messaging_factory.get_listeners(notification_handler)
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return CollectorService(listeners, self.config.collector.thread_pool_size)
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def get_instance_handler(self):
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return instance_handler.InstanceHandler(
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self.core_factory.get_instance_controller(),
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self.get_on_delete_filters())
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def get_volume_handler(self):
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return volume_handler.VolumeHandler(self.core_factory.get_volume_controller())
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def get_volume_type_handler(self):
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return volume_type_handler.VolumeTypeHandler(self.core_factory.get_volume_type_controller())
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def get_on_delete_filters(self):
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filters = notification.NotificationFilter()
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filters.add(errored_instance_filter.ErroredInstanceFilter())
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filters.add(delete_instance_before_completion_filter.DeleteInstanceBeforeCompletionFilter(self.config))
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return filters
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