deb-sahara/sahara/service/periodic.py
2015-04-27 14:33:13 +00:00

212 lines
7.8 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 functools
import random
from oslo_config import cfg
from oslo_log import log
from oslo_utils import timeutils
import six
from sahara import conductor as c
from sahara import context
from sahara.i18n import _LW
from sahara.openstack.common import periodic_task
from sahara.openstack.common import threadgroup
from sahara.service.edp import job_manager
from sahara.service import ops
from sahara.service import trusts
from sahara.utils import edp
from sahara.utils import proxy as p
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 in 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.'),
cfg.IntOpt('min_transient_cluster_active_time',
default=30,
help='Minimal "lifetime" in seconds for a transient cluster. '
'Cluster is guaranteed to be "alive" within this time '
'period.'),
cfg.IntOpt('cleanup_time_for_incomplete_clusters',
default=0,
help='Maximal time (in hours) for clusters allowed to be in '
'states other than "Active", "Deleting" or "Error". If a '
'cluster is not in "Active", "Deleting" or "Error" state '
'and last update of it was longer than '
'"cleanup_time_for_incomplete_clusters" hours ago then it '
'will be deleted automatically. (0 value means that '
'automatic clean up is disabled).')
]
CONF = cfg.CONF
CONF.register_opts(periodic_opts)
conductor = c.API
def get_time_since_last_update(cluster):
cluster_updated_at = timeutils.normalize_time(
timeutils.parse_isotime(cluster.updated_at))
current_time = timeutils.utcnow()
spacing = timeutils.delta_seconds(cluster_updated_at,
current_time)
return spacing
def terminate_cluster(ctx, cluster, description):
if CONF.use_identity_api_v3:
trusts.use_os_admin_auth_token(cluster)
context.set_current_cluster_id(cluster.id)
LOG.debug('Terminating {description} cluster '
'in "{status}" state'.format(status=cluster.status,
description=description))
try:
ops.terminate_cluster(cluster.id)
except Exception as e:
LOG.warning(_LW(
'Failed to terminate {description} cluster in "{status}" '
'state: {error}.').format(error=six.text_type(e),
status=cluster.status,
description=description))
else:
if cluster.status != 'AwaitingTermination':
conductor.cluster_update(
ctx,
cluster,
{'status': 'AwaitingTermination'})
def set_context(func):
@functools.wraps(func)
def handler(self, ctx):
ctx = context.get_admin_context()
context.set_ctx(ctx)
func(self, ctx)
context.set_ctx(None)
return handler
def _make_periodic_tasks():
'''Return the periodic tasks object
This function creates the periodic tasks class object, it is wrapped in
this manner to allow easier control of enabling and disabling tasks.
'''
zombie_task_spacing = 300 if CONF.use_domain_for_proxy_users else -1
class SaharaPeriodicTasks(periodic_task.PeriodicTasks):
@periodic_task.periodic_task(spacing=45, run_immediately=True)
@set_context
def update_job_statuses(self, ctx):
LOG.debug('Updating job statuses')
job_manager.update_job_statuses()
@periodic_task.periodic_task(spacing=90)
@set_context
def terminate_unneeded_transient_clusters(self, ctx):
LOG.debug('Terminating unneeded transient clusters')
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
spacing = get_time_since_last_update(cluster)
if spacing < CONF.min_transient_cluster_active_time:
continue
terminate_cluster(ctx, cluster, description='transient')
# Add event log info cleanup
context.ctx().current_instance_info = context.InstanceInfo()
@periodic_task.periodic_task(spacing=zombie_task_spacing)
@set_context
def check_for_zombie_proxy_users(self, ctx):
for user in p.proxy_domain_users_list():
if user.name.startswith('job_'):
je_id = user.name[4:]
je = conductor.job_execution_get(ctx, je_id)
if je is None or (je.info['status'] in
edp.JOB_STATUSES_TERMINATED):
LOG.debug('Found zombie proxy user {username}'.format(
username=user.name))
p.proxy_user_delete(user_id=user.id)
@periodic_task.periodic_task(spacing=3600)
@set_context
def terminate_incomplete_clusters(self, ctx):
if CONF.cleanup_time_for_incomplete_clusters <= 0:
return
LOG.debug('Terminating old clusters in non-final state')
# NOTE(alazarev) Retrieving all clusters once in hour for now.
# Criteria support need to be implemented in sahara db API to
# have SQL filtering.
for cluster in conductor.cluster_get_all(ctx):
if cluster.status in ['Active', 'Error', 'Deleting']:
continue
spacing = get_time_since_last_update(cluster)
if spacing < CONF.cleanup_time_for_incomplete_clusters * 3600:
continue
terminate_cluster(ctx, cluster, description='incomplete')
# Add event log info cleanup
context.ctx().current_instance_info = context.InstanceInfo()
return SaharaPeriodicTasks()
def setup():
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 {seconds} "
"seconds".format(seconds=initial_delay))
else:
initial_delay = None
tg = threadgroup.ThreadGroup()
pt = _make_periodic_tasks()
tg.add_dynamic_timer(
pt.run_periodic_tasks,
initial_delay=initial_delay,
periodic_interval_max=CONF.periodic_interval_max,
context=None)