f40fcdc573
This patch set adds WatcherJobStore class that allows to link jobs and services. Partially-Implements: blueprint background-jobs-ha Change-Id: I575887ca6dae60b3b7709e6d2e2b256e09a3d824
120 lines
4.4 KiB
Python
120 lines
4.4 KiB
Python
# -*- encoding: utf-8 -*-
|
|
# Copyright (c) 2016 Servionica LTD
|
|
# Copyright (c) 2016 Intel Corp
|
|
#
|
|
# Authors: Alexander Chadin <a.chadin@servionica.ru>
|
|
#
|
|
# 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 datetime
|
|
|
|
from apscheduler.jobstores import memory
|
|
|
|
from watcher.common import context
|
|
from watcher.common import scheduling
|
|
from watcher import conf
|
|
from watcher.db.sqlalchemy import api as sq_api
|
|
from watcher.db.sqlalchemy import job_store
|
|
from watcher.decision_engine.audit import base
|
|
from watcher import objects
|
|
|
|
|
|
CONF = conf.CONF
|
|
|
|
|
|
class ContinuousAuditHandler(base.AuditHandler):
|
|
def __init__(self):
|
|
super(ContinuousAuditHandler, self).__init__()
|
|
self._scheduler = None
|
|
self.context_show_deleted = context.RequestContext(is_admin=True,
|
|
show_deleted=True)
|
|
|
|
@property
|
|
def scheduler(self):
|
|
if self._scheduler is None:
|
|
self._scheduler = scheduling.BackgroundSchedulerService(
|
|
jobstores={
|
|
'default': job_store.WatcherJobStore(
|
|
engine=sq_api.get_engine()),
|
|
'memory': memory.MemoryJobStore()
|
|
}
|
|
)
|
|
return self._scheduler
|
|
|
|
def _is_audit_inactive(self, audit):
|
|
audit = objects.Audit.get_by_uuid(
|
|
self.context_show_deleted, audit.uuid)
|
|
if objects.audit.AuditStateTransitionManager().is_inactive(audit):
|
|
# if audit isn't in active states, audit's job must be removed to
|
|
# prevent using of inactive audit in future.
|
|
[job for job in self.scheduler.get_jobs()
|
|
if job.name == 'execute_audit' and
|
|
job.args[0].uuid == audit.uuid][0].remove()
|
|
return True
|
|
|
|
return False
|
|
|
|
def do_execute(self, audit, request_context):
|
|
# execute the strategy
|
|
solution = self.strategy_context.execute_strategy(
|
|
audit, request_context)
|
|
|
|
if audit.audit_type == objects.audit.AuditType.CONTINUOUS.value:
|
|
a_plan_filters = {'audit_uuid': audit.uuid,
|
|
'state': objects.action_plan.State.RECOMMENDED}
|
|
action_plans = objects.ActionPlan.list(
|
|
request_context, filters=a_plan_filters, eager=True)
|
|
for plan in action_plans:
|
|
plan.state = objects.action_plan.State.CANCELLED
|
|
plan.save()
|
|
return solution
|
|
|
|
@classmethod
|
|
def execute_audit(cls, audit, request_context):
|
|
self = cls()
|
|
if not self._is_audit_inactive(audit):
|
|
self.execute(audit, request_context)
|
|
|
|
def launch_audits_periodically(self):
|
|
audit_context = context.RequestContext(is_admin=True)
|
|
audit_filters = {
|
|
'audit_type': objects.audit.AuditType.CONTINUOUS.value,
|
|
'state__in': (objects.audit.State.PENDING,
|
|
objects.audit.State.ONGOING,
|
|
objects.audit.State.SUCCEEDED)
|
|
}
|
|
audits = objects.Audit.list(
|
|
audit_context, filters=audit_filters, eager=True)
|
|
scheduler_job_args = [
|
|
job.args for job in self.scheduler.get_jobs()
|
|
if job.name == 'execute_audit']
|
|
for audit in audits:
|
|
if audit.uuid not in [arg[0].uuid for arg in scheduler_job_args]:
|
|
self.scheduler.add_job(
|
|
self.execute_audit, 'interval',
|
|
args=[audit, audit_context],
|
|
seconds=audit.interval,
|
|
name='execute_audit',
|
|
next_run_time=datetime.datetime.now())
|
|
|
|
def start(self):
|
|
self.scheduler.add_job(
|
|
self.launch_audits_periodically,
|
|
'interval',
|
|
seconds=CONF.watcher_decision_engine.continuous_audit_interval,
|
|
next_run_time=datetime.datetime.now(),
|
|
jobstore='memory')
|
|
self.scheduler.start()
|