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###
# ============LICENSE_START=======================================================
# Netconf Server
# ================================================================================
# Copyright (C) 2021 Nokia. All rights reserved.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
###
from flask import Flask, logging, make_response, Response, request
from netconf_server.netconf_app_configuration import NetconfAppConfiguration
from netconf_server.netconf_kafka_client import NetconfKafkaClient
from netconf_server.sysrepo_configuration.sysrepo_configuration_manager import SysrepoConfigurationManager
class NetconfRestServer:
_rest_server: Flask = Flask("server")
logger = logging.create_logger(_rest_server)
_configuration_manager: SysrepoConfigurationManager
_app_configuration: NetconfAppConfiguration
def __init__(self, host='0.0.0.0', port=6555):
self._host = host
self._port = port
def start(self,
configuration_manager: SysrepoConfigurationManager,
netconf_app_configuration: NetconfAppConfiguration):
NetconfRestServer._configuration_manager = configuration_manager
NetconfRestServer._app_configuration = netconf_app_configuration
Flask.run(
NetconfRestServer._rest_server,
host=self._host,
port=self._port
)
@staticmethod
@_rest_server.route("/healthcheck")
def _health_check():
return "UP"
@staticmethod
@_rest_server.route("/readiness")
def _readiness_check():
try:
NetconfRestServer.__try_connect_to_kafka()
return Response('Ready', status=200)
except Exception as e:
NetconfRestServer.logger.error("Unable to create a Kafka client", e)
return Response('Not Ready', status=503)
# if Kafka is up & running and hostname with port is proper, then client will be created; otherwise
# an error will be reported
@staticmethod
def __try_connect_to_kafka():
NetconfKafkaClient.create(
host=NetconfRestServer._app_configuration.kafka_host_name,
port=NetconfRestServer._app_configuration.kafka_port
)
@staticmethod
@_rest_server.route("/change_config/<path:module_name>", methods=['POST'])
def _change_config(module_name):
config_data = request.data.decode("utf-8")
NetconfRestServer._configuration_manager.change_configuration(config_data, module_name)
return NetconfRestServer.__create_http_response(202, "Accepted")
@staticmethod
@_rest_server.route("/get_config/<path:module_name>", methods=['GET'])
def _get_config(module_name):
data = NetconfRestServer._configuration_manager.get_configuration(module_name)
return NetconfRestServer.__create_http_response(200, data)
@staticmethod
def __create_http_response(code, message):
return make_response(
Response(message, headers={'Content-Type': 'application/json'}),
code)
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