142 lines
5.1 KiB
Python
142 lines
5.1 KiB
Python
# Copyright (c) 2020-2021 Wind River Systems, Inc.
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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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#
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import six
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import functools
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from oslo_config import cfg
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from oslo_log import log as logging
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import oslo_messaging
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from oslo_service import service
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from dccommon.subprocess_cleanup import SubprocessCleanup
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from dcmanager.common import consts
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from dcmanager.common import context
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from dcmanager.common import exceptions
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from dcmanager.common import messaging as rpc_messaging
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from dcmanager.common import scheduler
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from dcmanager.common import utils
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from dcmanager.orchestrator.sw_update_manager import SwUpdateManager
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def request_context(func):
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@functools.wraps(func)
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def wrapped(self, ctx, *args, **kwargs):
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if ctx is not None and not isinstance(ctx, context.RequestContext):
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ctx = context.RequestContext.from_dict(ctx.to_dict())
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try:
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return func(self, ctx, *args, **kwargs)
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except exceptions.DCManagerException:
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raise oslo_messaging.rpc.dispatcher.ExpectedException()
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return wrapped
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class DCManagerOrchestratorService(service.Service):
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"""Lifecycle manager for a running orchestrator service."""
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def __init__(self):
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super(DCManagerOrchestratorService, self).__init__()
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self.host = cfg.CONF.host
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self.rpc_api_version = consts.RPC_API_VERSION
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self.topic = consts.TOPIC_DC_MANAGER_ORCHESTRATOR
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# The following are initialized here, but assigned in start() which
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# happens after the fork when spawning multiple worker processes
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self.TG = None
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self.target = None
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self._rpc_server = None
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self.sw_update_manager = None
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def start(self):
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utils.set_open_file_limit(cfg.CONF.worker_rlimit_nofile)
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self.init_tgm()
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self.init_manager()
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target = oslo_messaging.Target(version=self.rpc_api_version,
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server=self.host,
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topic=self.topic)
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self.target = target
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self._rpc_server = rpc_messaging.get_rpc_server(self.target, self)
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self._rpc_server.start()
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super(DCManagerOrchestratorService, self).start()
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def init_tgm(self):
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self.TG = scheduler.ThreadGroupManager()
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def init_manager(self):
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self.sw_update_manager = SwUpdateManager()
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def _stop_rpc_server(self):
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# Stop RPC connection to prevent new requests
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LOG.debug("Attempting to stop RPC service...")
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if self._rpc_server is not None:
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try:
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self._rpc_server.stop()
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self._rpc_server.wait()
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self._rpc_server = None
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LOG.info('RPC service stopped successfully')
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except Exception as ex:
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LOG.error('Failed to stop engine service: %s',
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six.text_type(ex))
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def stop(self):
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"""Stop anything initiated by start"""
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SubprocessCleanup.shutdown_cleanup(origin="service")
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self._stop_rpc_server()
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if self.TG is not None:
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self.TG.stop()
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self.TG = None
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if self.sw_update_manager is not None:
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self.sw_update_manager.stop()
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self.sw_update_manager = None
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# Terminate the engine process
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LOG.info("All threads were gone, terminating engine")
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super(DCManagerOrchestratorService, self).stop()
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@request_context
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def create_sw_update_strategy(self, context, payload):
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# Creates a software update strategy
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LOG.info("Handling create_sw_update_strategy request of type %s" %
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payload.get('type'))
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return self.sw_update_manager.create_sw_update_strategy(
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context, payload)
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@request_context
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def delete_sw_update_strategy(self, context, update_type=None):
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# Deletes the software update strategy
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LOG.info("Handling delete_sw_update_strategy request")
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return self.sw_update_manager.delete_sw_update_strategy(
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context,
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update_type=update_type)
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@request_context
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def apply_sw_update_strategy(self, context, update_type=None):
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# Applies the software update strategy
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LOG.info("Handling apply_sw_update_strategy request")
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return self.sw_update_manager.apply_sw_update_strategy(
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context,
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update_type=update_type)
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@request_context
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def abort_sw_update_strategy(self, context, update_type=None):
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# Aborts the software update strategy
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LOG.info("Handling abort_sw_update_strategy request")
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return self.sw_update_manager.abort_sw_update_strategy(
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context,
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update_type=update_type)
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