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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.
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,
get_service_baseurl_http, get_service_port_http, get_setting, wait_for_environment_variables)
from webui.service import create_app
from webui.Config import MAX_CONTENT_LENGTH, HOST, SECRET_KEY, DEBUG
def create_unique_session_cookie_name() -> str:
hostname = get_setting('HOSTNAME')
if hostname is None: return 'session'
hasher = hashlib.blake2b(digest_size=8)
hasher.update(hostname.encode('UTF-8'))
return 'session:{:s}'.format(str(hasher.hexdigest()))
logging.basicConfig(level=log_level)
logger = logging.getLogger(__name__)
wait_for_environment_variables([
get_env_var_name(ServiceNameEnum.CONTEXT, ENVVAR_SUFIX_SERVICE_HOST ),
get_env_var_name(ServiceNameEnum.CONTEXT, ENVVAR_SUFIX_SERVICE_PORT_GRPC),
get_env_var_name(ServiceNameEnum.DEVICE, ENVVAR_SUFIX_SERVICE_HOST ),
get_env_var_name(ServiceNameEnum.DEVICE, ENVVAR_SUFIX_SERVICE_PORT_GRPC),
get_env_var_name(ServiceNameEnum.SERVICE, ENVVAR_SUFIX_SERVICE_HOST ),
get_env_var_name(ServiceNameEnum.SERVICE, ENVVAR_SUFIX_SERVICE_PORT_GRPC),
get_env_var_name(ServiceNameEnum.SLICE, ENVVAR_SUFIX_SERVICE_HOST ),
get_env_var_name(ServiceNameEnum.SLICE, ENVVAR_SUFIX_SERVICE_PORT_GRPC),
metrics_port = get_metrics_port()
host = get_setting('HOST', default=HOST)
service_port = get_service_port_http(ServiceNameEnum.WEBUI)
web_app_root = get_service_baseurl_http(ServiceNameEnum.WEBUI)
debug = get_setting('DEBUG', default=DEBUG)
if isinstance(debug, str): debug = (debug.upper() in {'T', '1', 'TRUE'})
app = create_app(use_config={
'SECRET_KEY': SECRET_KEY,
'MAX_CONTENT_LENGTH': MAX_CONTENT_LENGTH,
'SESSION_COOKIE_NAME': create_unique_session_cookie_name(),
app.run(host=host, port=service_port, debug=debug)
logger.info('Bye')
return 0
if __name__ == '__main__':
sys.exit(main())