86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
# Copyright 2015 - Alcatel-Lucent
|
|
#
|
|
# 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 oslo_log import log
|
|
from oslo_service import service as os_service
|
|
|
|
from vitrage.entity_graph.processor import processor as proc
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
|
|
class VitrageGraphService(os_service.Service):
|
|
|
|
def __init__(self,
|
|
conf,
|
|
event_queue,
|
|
evaluator_queue,
|
|
evaluator,
|
|
entity_graph,
|
|
initialization_status):
|
|
super(VitrageGraphService, self).__init__()
|
|
self.queue = event_queue
|
|
self.conf = conf
|
|
self.evaluator = evaluator
|
|
self.processor = proc.Processor(self.conf,
|
|
initialization_status,
|
|
e_graph=entity_graph)
|
|
self.evaluator_queue = evaluator_queue
|
|
|
|
def start(self):
|
|
LOG.info("Vitrage Graph Service - Starting...")
|
|
|
|
super(VitrageGraphService, self).start()
|
|
self.tg.add_timer(0.1, self._process_event_non_blocking)
|
|
|
|
LOG.info("Vitrage Graph Service - Started!")
|
|
|
|
def stop(self, graceful=False):
|
|
LOG.info("Vitrage Graph Service - Stopping...")
|
|
|
|
super(VitrageGraphService, self).stop(graceful)
|
|
|
|
LOG.info("Vitrage Graph Service - Stopped!")
|
|
|
|
def _process_events(self):
|
|
while True:
|
|
self._process_event_non_blocking()
|
|
|
|
def _process_event_non_blocking(self):
|
|
"""Process events received from datasource
|
|
|
|
In order that other services (such as graph consistency, api handler)
|
|
could get work time as well, the work processing performed for 2
|
|
seconds and goes to sleep for 1 second. if there are more events in
|
|
the queue they are done when timer returns.
|
|
"""
|
|
start_time = datetime.datetime.now()
|
|
while not self.evaluator_queue.empty() or not self.queue.empty():
|
|
time_delta = datetime.datetime.now() - start_time
|
|
if time_delta.total_seconds() >= 2:
|
|
break
|
|
if not self.evaluator_queue.empty():
|
|
self.do_process(self.evaluator_queue)
|
|
elif not self.queue.empty():
|
|
self.do_process(self.queue)
|
|
|
|
def do_process(self, queue):
|
|
try:
|
|
event = queue.get()
|
|
self.processor.process_event(event)
|
|
except Exception as e:
|
|
LOG.exception("Exception: %s", e)
|