119 lines
4.0 KiB
Python
119 lines
4.0 KiB
Python
# Copyright 2017 Wind River
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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
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# 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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import threading
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from dcmanager.common import consts as dcm_consts
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from dcorch.engine.sync_thread import SyncThread
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from dcorch.objects.subcloud import Subcloud
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class SubCloudEngine(object):
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def __init__(self, context=None, name=None,
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version=None, subcloud=None):
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"""Init a subcloud
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:param context: operational context
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:param name: subcloud name, currently must match region name
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:param version: TiC software version running in subcloud
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:param subcloud: an embedded Subcloud object, persisted to DB
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"""
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super(SubCloudEngine, self).__init__()
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if subcloud is not None:
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self.subcloud = subcloud
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else:
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self.subcloud = Subcloud(
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context, region_name=name, software_version=version)
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self.subcloud.create()
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self.lock = threading.Lock() # protects the status
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self.sync_threads = [] # the individual SyncThread objects
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def set_version(self, version):
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# todo make sure we only increase the version
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self.subcloud.software_version = version
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self.subcloud.save()
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def spawn_sync_threads(self):
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# spawn the threads that actually handle syncing this subcloud
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for subclass in SyncThread.__subclasses__():
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thread = subclass(self)
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self.sync_threads.append(thread)
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thread.start()
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def is_managed(self):
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# is this subcloud managed
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self.lock.acquire()
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managed = self.subcloud.management_state
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self.lock.release()
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return managed == dcm_consts.MANAGEMENT_MANAGED
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def is_enabled(self):
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# is this subcloud enabled
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self.lock.acquire()
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status = self.subcloud.availability_status
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self.lock.release()
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return status == dcm_consts.AVAILABILITY_ONLINE
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def enable(self):
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# set subcloud availability to online
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self.lock.acquire()
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self.subcloud.management_state = dcm_consts.MANAGEMENT_MANAGED
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self.subcloud.availability_status = dcm_consts.AVAILABILITY_ONLINE
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self.subcloud.save()
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self.lock.release()
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for thread in self.sync_threads:
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thread.enable()
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def wake(self, endpoint_type):
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# wake specific endpoint type sync thread to process work
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if self.is_enabled():
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for thread in self.sync_threads:
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if thread.endpoint_type == endpoint_type:
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thread.wake()
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def disable(self):
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# set subcloud availability to offline
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self.lock.acquire()
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self.subcloud.management_state = dcm_consts.MANAGEMENT_UNMANAGED
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self.subcloud.availability_status = dcm_consts.AVAILABILITY_OFFLINE
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self.subcloud.save()
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self.lock.release()
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def shutdown(self):
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# shutdown, optionally deleting queued work
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self.disable()
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while self.sync_threads:
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thread = self.sync_threads.pop()
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thread.shutdown()
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def delete(self):
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# delete this subcloud
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self.shutdown()
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self.subcloud.delete()
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def initial_sync(self):
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# initial synchronization of the subcloud
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for thread in self.sync_threads:
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thread.initial_sync()
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def run_sync_audit(self):
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# run periodic sync audit on all threads in this subcloud
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if self.is_enabled():
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for thread in self.sync_threads:
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thread.run_sync_audit()
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