sahara/savanna/service/periodic.py

97 lines
3.2 KiB
Python

# Copyright (c) 2013 Mirantis Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import random
from oslo.config import cfg
from savanna import conductor as c
from savanna import context
from savanna.openstack.common import log
from savanna.openstack.common import periodic_task
from savanna.openstack.common import threadgroup
from savanna.service.edp import job_manager
LOG = log.getLogger(__name__)
periodic_opts = [
cfg.BoolOpt('periodic_enable',
default=True,
help='enable periodic tasks'),
cfg.IntOpt('periodic_fuzzy_delay',
default=60,
help='range of seconds to randomly delay when starting the'
' periodic task scheduler to reduce stampeding.'
' (Disable by setting to 0)'),
cfg.IntOpt('periodic_interval_max',
default=60,
help='Max interval size between periodic tasks execution in'
'seconds'),
]
CONF = cfg.CONF
CONF.register_opts(periodic_opts)
conductor = c.API
class SavannaPeriodicTasks(periodic_task.PeriodicTasks):
@periodic_task.periodic_task(spacing=45, run_immediately=True)
def update_job_statuses(self, ctx):
LOG.debug('Updating job statuses')
ctx = context.Context()
context.set_ctx(ctx)
job_manager.update_job_statuses()
context.set_ctx(None)
@periodic_task.periodic_task(spacing=90)
def terminate_unneeded_clusters(self, ctx):
LOG.debug('Terminating unneeded clusters')
ctx = context.Context()
for cluster in conductor.cluster_get_all(ctx, status='Active'):
if not cluster.is_transient:
continue
jc = conductor.job_execution_count(ctx,
end_time=None,
cluster_id=cluster.id)
if jc > 0:
continue
#TODO(akuznetsov) setup trust token and shutdown cluster
LOG.debug('Terminated cluster %s with id %s' %
(cluster.name, cluster.id))
context.set_ctx(None)
def setup(app):
if CONF.periodic_enable:
if CONF.periodic_fuzzy_delay:
initial_delay = random.randint(0, CONF.periodic_fuzzy_delay)
LOG.debug("Starting periodic tasks with initial delay '%s' "
"seconds", initial_delay)
else:
initial_delay = None
app.tg = threadgroup.ThreadGroup()
pt = SavannaPeriodicTasks()
app.tg.add_dynamic_timer(
pt.run_periodic_tasks,
initial_delay=initial_delay,
periodic_interval_max=CONF.periodic_interval_max,
context=None)