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# Copyright 2021-2023 H2020 TeraFlow (https://www.teraflow-h2020.eu/)
#
# 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 logging, signal, sys, threading
from prometheus_client import start_http_server
from common.Settings import get_setting, wait_for_environment_variables
from compute.Config import (
GRPC_SERVICE_PORT, GRPC_MAX_WORKERS, GRPC_GRACE_PERIOD, LOG_LEVEL, RESTAPI_SERVICE_PORT, RESTAPI_BASE_URL,
METRICS_PORT)
from .ComputeService import ComputeService
from .rest_server.RestServer import RestServer
from .rest_server.nbi_plugins.ietf_l2vpn import register_ietf_l2vpn
terminate = threading.Event()
LOGGER = None
def signal_handler(signal, frame): # pylint: disable=redefined-outer-name
LOGGER.warning('Terminate signal received')
terminate.set()
def main():
global LOGGER # pylint: disable=global-statement
grpc_service_port = get_setting('COMPUTESERVICE_SERVICE_PORT_GRPC', default=GRPC_SERVICE_PORT )
max_workers = get_setting('MAX_WORKERS', default=GRPC_MAX_WORKERS )
grace_period = get_setting('GRACE_PERIOD', default=GRPC_GRACE_PERIOD )
log_level = get_setting('LOG_LEVEL', default=LOG_LEVEL )
restapi_service_port = get_setting('RESTAPI_SERVICE_PORT', default=RESTAPI_SERVICE_PORT)
restapi_base_url = get_setting('RESTAPI_BASE_URL', default=RESTAPI_BASE_URL )
metrics_port = get_setting('METRICS_PORT', default=METRICS_PORT )
logging.basicConfig(level=log_level)
LOGGER = logging.getLogger(__name__)
wait_for_environment_variables([
'CONTEXTSERVICE_SERVICE_HOST', 'CONTEXTSERVICE_SERVICE_PORT_GRPC',
'SERVICESERVICE_SERVICE_HOST', 'SERVICESERVICE_SERVICE_PORT_GRPC'
])
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
LOGGER.info('Starting...')
# Start metrics server
start_http_server(metrics_port)
# Starting compute service
grpc_service = ComputeService(port=grpc_service_port, max_workers=max_workers, grace_period=grace_period)
grpc_service.start()
rest_server = RestServer(port=restapi_service_port, base_url=restapi_base_url)
register_ietf_l2vpn(rest_server)
rest_server.start()
# Wait for Ctrl+C or termination signal
while not terminate.wait(timeout=0.1): pass
LOGGER.info('Terminating...')
grpc_service.stop()
rest_server.shutdown()
rest_server.join()
LOGGER.info('Bye')
return 0
if __name__ == '__main__':
sys.exit(main())