269 lines
10 KiB
Python
269 lines
10 KiB
Python
# Copyright (c) 2013 Mirantis Inc.
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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 functools
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import random
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from oslo_config import cfg
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from oslo_log import log
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from oslo_service import periodic_task
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from oslo_service import threadgroup
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from oslo_utils import timeutils
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import six
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from sahara import conductor as c
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from sahara import context
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from sahara.i18n import _LW
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from sahara.service import api
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from sahara.service import coordinator
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from sahara.service.edp import job_manager
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from sahara.service.health import verification_base as vb
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from sahara.service import trusts
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from sahara.utils import cluster as c_u
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from sahara.utils import edp
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from sahara.utils import proxy as p
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LOG = log.getLogger(__name__)
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periodic_opts = [
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cfg.BoolOpt('periodic_enable',
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default=True,
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help='Enable periodic tasks.'),
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cfg.IntOpt('periodic_fuzzy_delay',
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default=60,
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help='Range in seconds to randomly delay when starting the'
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' periodic task scheduler to reduce stampeding.'
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' (Disable by setting to 0).'),
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cfg.IntOpt('periodic_interval_max',
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default=60,
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help='Max interval size between periodic tasks execution in '
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'seconds.'),
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cfg.IntOpt('min_transient_cluster_active_time',
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default=30,
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help='Minimal "lifetime" in seconds for a transient cluster. '
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'Cluster is guaranteed to be "alive" within this time '
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'period.'),
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cfg.IntOpt('cleanup_time_for_incomplete_clusters',
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default=0,
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help='Maximal time (in hours) for clusters allowed to be in '
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'states other than "Active", "Deleting" or "Error". If a '
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'cluster is not in "Active", "Deleting" or "Error" state '
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'and last update of it was longer than '
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'"cleanup_time_for_incomplete_clusters" hours ago then it '
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'will be deleted automatically. (0 value means that '
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'automatic clean up is disabled).'),
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cfg.StrOpt('periodic_coordinator_backend_url',
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help='The backend URL to use for distributed periodic tasks '
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'coordination.'),
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cfg.IntOpt('periodic_workers_number',
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default=1,
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help='Number of threads to run periodic tasks.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(periodic_opts)
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conductor = c.API
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def get_time_since_last_update(cluster):
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cluster_updated_at = timeutils.normalize_time(
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timeutils.parse_isotime(cluster.updated_at))
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current_time = timeutils.utcnow()
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spacing = timeutils.delta_seconds(cluster_updated_at,
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current_time)
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return spacing
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def terminate_cluster(ctx, cluster, description):
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if CONF.use_identity_api_v3 and cluster.trust_id:
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trusts.use_os_admin_auth_token(cluster)
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context.set_current_cluster_id(cluster.id)
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LOG.debug('Terminating {description} cluster '
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'in "{status}" state'.format(status=cluster.status,
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description=description))
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try:
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api.terminate_cluster(cluster.id)
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except Exception as e:
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LOG.warning(_LW(
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'Failed to terminate {description} cluster in "{status}" '
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'state: {error}.').format(error=six.text_type(e),
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status=cluster.status,
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description=description))
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else:
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if (cluster.status !=
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c_u.CLUSTER_STATUS_AWAITINGTERMINATION):
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conductor.cluster_update(
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ctx, cluster,
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{'status': c_u.CLUSTER_STATUS_AWAITINGTERMINATION})
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def set_context(func):
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@functools.wraps(func)
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def handler(self, ctx):
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ctx = context.get_admin_context()
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context.set_ctx(ctx)
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func(self, ctx)
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context.set_ctx(None)
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return handler
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def _make_periodic_tasks():
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'''Return the periodic tasks object
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This function creates the periodic tasks class object, it is wrapped in
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this manner to allow easier control of enabling and disabling tasks.
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'''
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zombie_task_spacing = 300 if CONF.use_domain_for_proxy_users else -1
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heartbeat_interval = (CONF.coordinator_heartbeat_interval if
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CONF.periodic_coordinator_backend_url else -1)
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class SaharaPeriodicTasks(periodic_task.PeriodicTasks):
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hr = coordinator.HashRing(
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CONF.periodic_coordinator_backend_url, 'sahara-periodic-tasks')
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def __init__(self):
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super(SaharaPeriodicTasks, self).__init__(CONF)
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@periodic_task.periodic_task(
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spacing=heartbeat_interval, run_immediately=True)
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@set_context
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def heartbeat(self, ctx):
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self.hr.heartbeat()
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@periodic_task.periodic_task(spacing=45)
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@set_context
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def update_job_statuses(self, ctx):
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LOG.debug('Updating job statuses')
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all_je = conductor.job_execution_get_all(ctx, end_time=None)
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je_to_manage = self.hr.get_subset(all_je)
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for job in je_to_manage:
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job_manager.update_job_status(job.id)
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@periodic_task.periodic_task(spacing=90)
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@set_context
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def terminate_unneeded_transient_clusters(self, ctx):
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LOG.debug('Terminating unneeded transient clusters')
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all_clusters = conductor.cluster_get_all(
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ctx, status=c_u.CLUSTER_STATUS_ACTIVE, is_transient=True)
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clusters_to_manage = self.hr.get_subset(all_clusters)
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for cluster in clusters_to_manage:
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jc = conductor.job_execution_count(ctx,
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end_time=None,
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cluster_id=cluster.id)
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if jc > 0:
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continue
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spacing = get_time_since_last_update(cluster)
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if spacing < CONF.min_transient_cluster_active_time:
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continue
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terminate_cluster(ctx, cluster, description='transient')
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# Add event log info cleanup
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context.ctx().current_instance_info = context.InstanceInfo()
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@periodic_task.periodic_task(spacing=zombie_task_spacing)
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@set_context
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def check_for_zombie_proxy_users(self, ctx):
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all_users = p.proxy_domain_users_list()
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users_to_manage = self.hr.get_subset(all_users)
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for user in users_to_manage:
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if user.name.startswith('job_'):
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je_id = user.name[4:]
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je = conductor.job_execution_get(ctx, je_id)
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if je is None or (je.info['status'] in
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edp.JOB_STATUSES_TERMINATED):
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LOG.debug('Found zombie proxy user {username}'.format(
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username=user.name))
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p.proxy_user_delete(user_id=user.id)
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@periodic_task.periodic_task(spacing=3600)
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@set_context
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def terminate_incomplete_clusters(self, ctx):
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if CONF.cleanup_time_for_incomplete_clusters <= 0:
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return
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LOG.debug('Terminating old clusters in non-final state')
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# NOTE(alazarev) Retrieving all clusters once in hour for now.
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# Criteria support need to be implemented in sahara db API to
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# have SQL filtering.
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all_clusters = [
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cluster for cluster in conductor.cluster_get_all(ctx) if
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(cluster.status not in [
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c_u.CLUSTER_STATUS_ACTIVE, c_u.CLUSTER_STATUS_ERROR,
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c_u.CLUSTER_STATUS_DELETING])
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]
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clusters_to_manage = self.hr.get_subset(all_clusters)
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for cluster in clusters_to_manage:
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spacing = get_time_since_last_update(cluster)
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if spacing < CONF.cleanup_time_for_incomplete_clusters * 3600:
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continue
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terminate_cluster(ctx, cluster, description='incomplete')
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# Add event log info cleanup
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context.ctx().current_instance_info = context.InstanceInfo()
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@periodic_task.periodic_task(
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spacing=vb.get_verification_periodic_interval())
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@set_context
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def run_verifications(self, ctx):
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LOG.debug("Executing health checks for the clusters")
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start_dict = {'verification': {'status': 'START'}}
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all_clusters = conductor.cluster_get_all(
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ctx, status=c_u.CLUSTER_STATUS_ACTIVE)
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clusters_to_manage = self.hr.get_subset(all_clusters)
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for cluster in clusters_to_manage:
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try:
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vb.validate_verification_start(cluster)
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api.update_cluster(cluster.id, start_dict)
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except vb.CannotVerifyError:
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LOG.debug("Skipping running verification "
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"on the cluster %s" % cluster.name)
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return SaharaPeriodicTasks()
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def setup():
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if CONF.periodic_enable:
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if CONF.periodic_fuzzy_delay:
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initial_delay = random.randint(0, CONF.periodic_fuzzy_delay)
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LOG.debug("Starting periodic tasks with initial delay {seconds} "
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"seconds".format(seconds=initial_delay))
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else:
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initial_delay = None
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tg = threadgroup.ThreadGroup()
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workers_number = (CONF.periodic_workers_number
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if CONF.periodic_coordinator_backend_url else 1)
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for t in range(workers_number):
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pt = _make_periodic_tasks()
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tg.add_dynamic_timer(
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pt.run_periodic_tasks,
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initial_delay=initial_delay,
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periodic_interval_max=CONF.periodic_interval_max,
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context=None)
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