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  • # Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
    #
    # 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 grpc, logging
    from typing import Optional
    from common.proto.context_pb2 import Connection, ConnectionId
    from context.client.ContextClient import ContextClient
    
    LOGGER = logging.getLogger(__name__)
    
    def get_connection_by_id(
        context_client : ContextClient, connection_id : ConnectionId, rw_copy : bool = False
    ) -> Optional[Connection]:
        try:
            ro_connection : Connection = context_client.GetConnection(connection_id)
            if not rw_copy: return ro_connection
            rw_connection = Connection()
            rw_connection.CopyFrom(ro_connection)
            return rw_connection
        except grpc.RpcError as e:
            if e.code() != grpc.StatusCode.NOT_FOUND: raise # pylint: disable=no-member
            #connection_uuid = connection_id.connection_uuid.uuid
            #LOGGER.exception('Unable to get connection({:s})'.format(str(connection_uuid)))
            return None
    
    def get_connection_by_uuid(
        context_client : ContextClient, connection_uuid : str, rw_copy : bool = False
    ) -> Optional[Connection]:
        # pylint: disable=no-member
        connection_id = ConnectionId()
        connection_id.connection_uuid.uuid = connection_uuid
        return get_connection_by_id(context_client, connection_id, rw_copy=rw_copy)