Source code for watcher.decision_engine.audit.continuous
# -*- 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
[docs]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
[docs] 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
[docs] @classmethod
def execute_audit(cls, audit, request_context):
self = cls()
if not self._is_audit_inactive(audit):
self.execute(audit, request_context)
[docs] 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())
[docs] 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()