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# Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
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#
# 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
import signal
import sys
import threading
from prometheus_client import start_http_server
from common.Constants import ServiceNameEnum
from common.Settings import (ENVVAR_SUFIX_SERVICE_HOST,
ENVVAR_SUFIX_SERVICE_PORT_GRPC, get_env_var_name,
get_log_level, get_metrics_port,
wait_for_environment_variables)
from .VNTManagerService import VNTManagerService
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
log_level = get_log_level()
logging.basicConfig(level=log_level)
LOGGER = logging.getLogger(__name__)
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
LOGGER.info("Starting...")
# Start metrics server
metrics_port = get_metrics_port()
start_http_server(metrics_port)
grpc_service = VNTManagerService()
grpc_service.start()
LOGGER.info("Started...")
# Wait for Ctrl+C or termination signal
while not terminate.wait(timeout=1):
pass
LOGGER.info("Terminating...")
grpc_service.stop()
LOGGER.info("Bye")
return 0
if __name__ == "__main__":
sys.exit(main())