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# Copyright (c) 2017-2018 Wind River Systems, 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.
### VES agent workers
from __future__ import absolute_import, unicode_literals
from titanium_cloud.celery import app
import os
import logging
import json
import time
from django.core.cache import cache
logger = logging.getLogger(__name__)
@app.task(bind=True)
def scheduleBacklogs(self, vimid):
# make sure only one task runs here
logger.info("schedule with vimid:%" % (vimid))
logger.debug("scheduleBacklogs starts")
backlog_count, next_time_slot = processBacklogs()
logger.debug("processBacklogs return with %s, %s" % (backlog_count, next_time_slot))
# sleep for next_time_slot
while backlog_count > 0:
time.sleep(next_time_slot)
backlog_count, next_time_slot = processBacklogs()
logger.debug("scheduleBacklogs stops")
def processBacklogs():
# find out count of valid backlog and the next time slot
backlog_count = 0
next_time_slot = 10
try:
#get the whole list of backlog
VesAgentBacklogsVimListStr = cache.get("VesAgentBacklogs.vimlist")
if VesAgentBacklogsVimListStr is None:
logger.warn("VesAgentBacklogs.vimlist cannot be found in cache")
return 0,next_time_slot
logger.debug("VesAgentBacklogs.vimlist: %s" % (VesAgentBacklogsVimListStr))
backlogsAllVims = json.loads(VesAgentBacklogsVimListStr)
if backlogsAllVims is None:
logger.warn("VesAgentBacklogs.vimlist is empty")
return 0,next_time_slot
for vimid in backlogsAllVims:
#iterate each backlogs
backlog_count_tmp,next_time_slot_tmp = processBacklogsOfOneVIM(vimid)
logger.debug("vimid:%s, backlog_count,next_time_slot:%s,%s"
%( vimid,backlog_count_tmp,next_time_slot_tmp ))
backlog_count += backlog_count_tmp
next_time_slot = next_time_slot_tmp if next_time_slot > next_time_slot_tmp else next_time_slot
pass
except Exception as e:
logger.error("exception:%s" % str(e))
return backlog_count, next_time_slot
pass
def processBacklogsOfOneVIM(vimid):
'''
process all backlogs for a VIM, return count of valid backlogs
:param vimid:
:return:
'''
backlog_count = 3
next_time_slot = 10
try:
vesAgentConfigStr = cache.get("VesAgentBacklogs.config.%s" % (vimid))
if vesAgentConfigStr is None:
logger.warn("VesAgentBacklogs.config.%s cannot be found in cache" % (vimid))
return 0,next_time_slot
logger.debug("VesAgentBacklogs.config.%s: %s" % (vimid, vesAgentConfigStr))
vesAgentConfig = json.loads(vesAgentConfigStr)
if vesAgentConfig is None:
logger.warn("VesAgentBacklogs.config.%s corrupts" % (vimid))
return 0,next_time_slot
except Exception as e:
logger.error("exception:%s" % str(e))
return backlog_count, next_time_slot
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