201 lines
7.2 KiB
Python
201 lines
7.2 KiB
Python
# 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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import six
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import time
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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 kingbird.common import consts
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from kingbird.common import context
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from kingbird.common import exceptions
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from kingbird.common.i18n import _
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from kingbird.common import messaging as rpc_messaging
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from kingbird.engine.flavor_sync_manager import FlavorSyncManager
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from kingbird.engine.image_sync_manager import ImageSyncManager
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from kingbird.engine.keypair_sync_manager import KeypairSyncManager
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from kingbird.engine.quota_manager import QuotaManager
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from kingbird.engine import scheduler
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from kingbird.objects import service as service_obj
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from oslo_service import service
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from oslo_utils import timeutils
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from oslo_utils import uuidutils
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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.KingbirdException:
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raise oslo_messaging.rpc.dispatcher.ExpectedException()
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return wrapped
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class EngineService(service.Service):
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"""Lifecycle manager for a running service engine.
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- All the methods in here are called from the RPC client.
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- If a RPC call does not have a corresponding method here, an exceptions
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will be thrown.
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- Arguments to these calls are added dynamically and will be treated as
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keyword arguments by the RPC client.
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"""
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def __init__(self, host, topic, manager=None):
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super(EngineService, 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_KB_ENGINE
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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.engine_id = None
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self.TG = None
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self.periodic_enable = cfg.CONF.scheduler.periodic_enable
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self.periodic_interval = cfg.CONF.scheduler.periodic_interval
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self.target = None
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self._rpc_server = None
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self.qm = None
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self.ksm = None
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self.ism = None
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self.fsm = None
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def init_tgm(self):
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self.TG = scheduler.ThreadGroupManager()
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def init_qm(self):
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self.qm = QuotaManager()
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def init_ksm(self):
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self.ksm = KeypairSyncManager()
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def init_ism(self):
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self.ism = ImageSyncManager()
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def init_fsm(self):
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self.fsm = FlavorSyncManager()
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def start(self):
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self.engine_id = uuidutils.generate_uuid()
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self.init_tgm()
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self.init_qm()
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self.init_ksm()
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self.init_ism()
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self.init_fsm()
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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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self.service_registry_cleanup()
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self.TG.add_timer(cfg.CONF.report_interval,
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self.service_registry_report)
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super(EngineService, self).start()
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if self.periodic_enable:
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LOG.info("Adding periodic tasks for the engine to perform")
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self.TG.add_timer(self.periodic_interval,
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self.periodic_balance_all, None, self.engine_id)
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def service_registry_report(self):
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ctx = context.get_admin_context()
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try:
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svc = service_obj.Service.update(ctx, self.engine_id)
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# if svc is None, means it's not created.
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if svc is None:
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service_obj.Service.create(ctx, self.engine_id, self.host,
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'kingbird-engine', self.topic)
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except Exception as ex:
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LOG.error('Service %(service_id)s update failed: %(error)s',
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{'service_id': self.engine_id, 'error': ex})
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def service_registry_cleanup(self):
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ctx = context.get_admin_context()
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time_window = (2 * cfg.CONF.report_interval)
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services = service_obj.Service.get_all(ctx)
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for svc in services:
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if svc['id'] == self.engine_id:
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continue
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if timeutils.is_older_than(svc['updated_at'], time_window):
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# < time_line:
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# hasn't been updated, assuming it's died.
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LOG.info('Service %s was aborted', svc['id'])
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service_obj.Service.delete(ctx, svc['id'])
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def periodic_balance_all(self, engine_id):
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# Automated Quota Sync for all the keystone projects
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LOG.info("Periodic quota sync job started at: %s",
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time.strftime("%c"))
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self.qm.periodic_balance_all(engine_id)
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@request_context
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def get_total_usage_for_tenant(self, context, project_id):
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# Returns a dictionary containing nova, neutron &
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# cinder usages for the project
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LOG.info("Get total tenant usage called for: %s",
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project_id)
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return self.qm.get_total_usage_for_tenant(project_id)
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@request_context
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def quota_sync_for_project(self, context, project_id):
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# On Demand Quota Sync for a project, will be triggered by KB-API
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LOG.info("On Demand Quota Sync Called for: %s",
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project_id)
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self.qm.quota_sync_for_project(project_id)
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@request_context
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def keypair_sync_for_user(self, ctxt, job_id, force):
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# Keypair Sync for a user, will be triggered by KB-API
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self.ksm.resource_sync(ctxt, job_id, force)
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@request_context
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def image_sync(self, ctxt, job_id, force):
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# Image Sync triggered by KB_API.
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self.ism.resource_sync(ctxt, job_id, force)
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@request_context
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def flavor_sync(self, ctxt, job_id, force):
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# Flavor Sync triggered by KB_API.
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self.fsm.resource_sync(ctxt, job_id, force)
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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 engine service..."))
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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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LOG.info('Engine 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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self._stop_rpc_server()
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self.TG.stop()
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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(EngineService, self).stop()
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