xos/synchronizer/openstack-synchronizer.py

#!/usr/bin/env python

# Copyright 2017-present Open Networking Foundation
#
# 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 os
import argparse
import sys

sys.path.append('/opt/xos')
from xosconfig import Config

base_config_file = os.path.abspath(os.path.dirname(os.path.realpath(__file__)) + '/config.yaml')
mounted_config_file = os.path.abspath(os.path.dirname(os.path.realpath(__file__)) + '/mounted_config.yaml')

if os.path.isfile(mounted_config_file):
    Config.init(base_config_file, 'synchronizer-config-schema.yaml', mounted_config_file)
else:
    Config.init(base_config_file, 'synchronizer-config-schema.yaml')

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "xos.settings")
from xos.logger import Logger, logging, logger
import time

from synchronizers.new_base.modelaccessor import *
from synchronizers.new_base.backend import Backend
from synchronizers.new_base.event_loop import set_driver

logger = Logger(level=logging.INFO)

# TODO: These two lines are the only difference between this file and
#       new_base/openstack-synchronizer.py. Reconcile these.
# set the driver.
from synchronizers.openstack.driver import OpenStackDriver
set_driver(OpenStackDriver())


def main():
    models_active = False
    wait = False
    while not models_active:
        try:
            _ = Instance.objects.first()
            _ = NetworkTemplate.objects.first()
            models_active = True
        except Exception,e:
            logger.info(str(e))
            logger.info('Waiting for data model to come up before starting...')
            time.sleep(10)
            wait = True

    if (wait):
        time.sleep(60) # Safety factor, seeing that we stumbled waiting for the data model to come up.
    backend = Backend()
    backend.run()

if __name__ == '__main__':

    # Update the CA certificates
    os.system("update-ca-certificates")

    main()