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OpticalConfig.py

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    OpticalConfig.py 33.07 KiB
    # Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (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 json, logging
    from sqlalchemy.dialects.postgresql import insert
    from common.message_broker.MessageBroker import MessageBroker
    from common.DeviceTypes import DeviceTypeEnum
    from sqlalchemy.engine import Engine
    from sqlalchemy.orm import Session, sessionmaker
    from sqlalchemy_cockroachdb import run_transaction
    from common.proto.context_pb2 import OpticalConfig, OpticalConfigId, Empty, EventTypeEnum
    from .models.OpticalConfig.OpticalConfigModel import OpticalConfigModel
    from .models.OpticalConfig.TransponderModel import  TransponderTypeModel, OpticalChannelModel
    from .models.OpticalConfig.RoadmModel import RoadmTypeModel, ChannelModel, ORInterfaceModel
    from context.service.database.uuids.OpticalConfig import (
        channel_get_uuid , opticalconfig_get_uuid ,transponder_get_uuid,roadm_get_uuid,
        interface_get_uuid
    )
    from .Events import notify_event_opticalconfig
    
    LOGGER = logging.getLogger(__name__)
    
    def get_opticalconfig(db_engine : Engine):
        def callback(session:Session):
            optical_configs = list()
            results = session.query(OpticalConfigModel).all()
            for obj in results:
                optical_config = OpticalConfig()
                optical_config.config = json.dumps(obj.dump())
                ids_obj = obj.dump_id()
                optical_config.opticalconfig_id.opticalconfig_uuid = ids_obj["opticalconfig_uuid"]
                optical_config.device_id.device_uuid.uuid=ids_obj["device_uuid"]
                optical_configs.append(optical_config)
            return optical_configs
        obj = run_transaction(sessionmaker(bind=db_engine), callback)
        return obj
    
    def set_opticalconfig(db_engine : Engine, request : OpticalConfig):
        opticalconfig_id = OpticalConfigId()
        device_id = request.device_id
        device_uuid =  request.device_id.device_uuid.uuid
        channels = []
        interfaces = []
        transponder = []
        roadms = []
        channel_namespace = None
        OpticalConfig_data = []
        config_type = None
        #is_transpondre = False
        opticalconfig_uuid = opticalconfig_get_uuid(device_id) 
    
        if request.config:
            config = json.loads(request.config)
            if 'channel_namespace' in config:
                channel_namespace=config['channel_namespace']
            if "type" in config:
                config_type= config["type"]
                if config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:
                    is_transpondre = True
                    transceivers = []
                    if channel_namespace is None and  'channel_namespace' in config:
                        channel_namespace=config['channel_namespace']
                    if 'transceivers' in config and len(config['transceivers']['transceiver']) > 0:
                        transceivers = [transceiver for transceiver in config ['transceivers']['transceiver']]
                    if 'channels' in config and len(config['channels']) > 0:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                        for channel_params in config['channels']:
                            channels.append({
                                # "opticalconfig_uuid":opticalconfig_uuid,
                                "transponder_uuid"   : transponder_get_uuid(device_id),
                                "channel_uuid"       : channel_get_uuid(channel_params['name']['index'],device_uuid),
                                "channel_name"       : channel_params['name']['index'],
                                "frequency"          : int(channel_params["frequency"]) if "frequency" in channel_params  else 0,
                                "operational_mode"   : int(channel_params["operational-mode"]) if "operational-mode" in channel_params else 0,
                                "target_output_power": channel_params["target-output-power"] if "target-output-power" in channel_params else '',
                                "status"             : channel_params["status"] if "status" in channel_params else ""
                            })
    
                    transponder.append({
                        "transponder_uuid"  : transponder_get_uuid(device_id),
                        "transcievers"      : transceivers,
                        "interfaces"        : None,
                        "opticalconfig_uuid": opticalconfig_uuid,
                    })
    
                if config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                    if channel_namespace is None and  'channel_namespace' in config:
                        channel_namespace=config['channel_namespace']
                    if 'media_channels' in config and len(config['media_channels']) > 0:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                        channel_num = 0
                        for channel_params in config['media_channels']:
                            channel_index = channel_params['channel_index'] if channel_params['channel_index'] is not None else None
                            channels.append({
                                # "opticalconfig_uuid":opticalconfig_uuid,
                                "roadm_uuid"          : roadm_get_uuid(device_id),
                                "channel_uuid"        : channel_get_uuid(f'media_channel_{channel_index}',device_uuid),
                                "band_name"           : channel_params['band_name'],
                                "lower_frequency"     : int(channel_params["lower_frequency"]) if "lower_frequency" in channel_params  else 0,
                                "upper_frequency"     : int(channel_params["upper_frequency"]) if "upper_frequency" in channel_params  else 0,
                                "dest_port"           : channel_params["dest_port"] if "dest_port" in channel_params else '',
                                "src_port"            : channel_params["src_port"] if "src_port" in channel_params else '',
                                "status"              : channel_params["status"] if "status" in channel_params else "",
                                "type"                : 'media_channel',
                                "optical_band_parent" : str(channel_params['optical_band_parent']) if 'optical_band_parent' in channel_params else None,
                                "channel_index"       : channel_index if channel_index is not None else None,
                            })
                    if 'optical_bands' in config and len(config['optical_bands']) > 0:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                        channel_num = 0
                        for channel_params in config['optical_bands']:
                            channel_num += 1
                            channels.append({
                                # "opticalconfig_uuid":opticalconfig_uuid,
                                "roadm_uuid"         : roadm_get_uuid(device_id),
                                "channel_uuid"       : channel_get_uuid(f'optical_bands_{channel_num}',device_uuid),
                                "band_name"          : channel_params['band_name'],
                                "lower_frequency"    : int(channel_params["lower_frequency"]) if "lower_frequency" in channel_params  else 0,
                                "upper_frequency"    : int(channel_params["upper_frequency"]) if "upper_frequency" in channel_params  else 0,
                                "dest_port"          : channel_params["dest_port"] if "dest_port" in channel_params else '',
                                "src_port"           : channel_params["src_port"] if "src_port" in channel_params else '',
                                "status"             : channel_params["status"] if "status" in channel_params else "",
                                "type"               : 'optical_band',
                                "channel_index"      : channel_params['channel_index'] if 'channel_index' in channel_params else None,
                                "optical_band_parent": None
                            })
    
                    roadms.append({
                        "roadm_uuid"         : roadm_get_uuid(device_id),
                        "opticalconfig_uuid" : opticalconfig_uuid,
                    })
    
                if config_type == DeviceTypeEnum.OPEN_ROADM._value_:
                    if 'interfaces' in config:
                        for interface in config['interfaces']:
                            interfaces.append({
                                "interface_uuid"      : interface_get_uuid(interface['name']),
                                'name'                : interface["name"],
                                "type"                : interface["type"],
                                "administrative_state": interface["administrative_state"],
                                "circuit_pack_name"   : interface["circuit_pack_name"],
                                "port"                : interface["port"],
                                "interface_list"      : interface["interface_list"],
                                "frequency"           : interface["frequency"],
                                "width"               : interface["width"],
                                "roadm_uuid"          : roadm_get_uuid(device_id),
                            })
                    roadms.append({
                        "roadm_uuid"        : roadm_get_uuid(device_id),
                        "opticalconfig_uuid": opticalconfig_uuid,
                    })          
                    LOGGER.info(f"open_roadm")
    
            OpticalConfig_data.append({
                "opticalconfig_uuid" : opticalconfig_uuid,
                # "transcievers"      : transceivers,
                # "interfaces"        :"",
                "channel_namespace" : channel_namespace ,
                "endpoints"         : [json.dumps(endpoint) for endpoint in config.get("endpoints",[])],
                "device_uuid"       : device_uuid,
                "type"              : config_type
            })
    
            LOGGER.info(f"added OpticalConfig_data {OpticalConfig_data}")
            LOGGER.info(f"added interfaces {interfaces}")
    
        def callback(session:Session)->bool:
            stmt = insert(OpticalConfigModel).values(OpticalConfig_data)
            stmt = stmt.on_conflict_do_update(
                index_elements=[OpticalConfigModel.opticalconfig_uuid],
                set_=dict(
                    channel_namespace = stmt.excluded.channel_namespace
                )
            )
            stmt = stmt.returning(OpticalConfigModel.opticalconfig_uuid)
            opticalconfig_id = session.execute(stmt).fetchone()
            if config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:
                if (len(transponder)>0):
                    stmt = insert(TransponderTypeModel).values(transponder)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[TransponderTypeModel.transponder_uuid],
                        set_=dict(
                            transcievers = stmt.excluded.transcievers,
                        )
                    )
                    stmt = stmt.returning(TransponderTypeModel.transponder_uuid)
                    transponder_id = session.execute(stmt).fetchone()
    
                if (len(channels) > 0):
                    stmt = insert(OpticalChannelModel).values(channels)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[OpticalChannelModel.channel_uuid],
                        set_=dict(
                            channel_name= stmt.excluded.channel_name ,
                            frequency = stmt.excluded.frequency,
                            operational_mode=stmt.excluded.operational_mode,
                            target_output_power=stmt.excluded.target_output_power,
                        )
                    )
                    stmt = stmt.returning(OpticalChannelModel.channel_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()
    
            if config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                if len(roadms) > 0:
                    stmt = insert(RoadmTypeModel).values(roadms)
                    stmt = stmt.on_conflict_do_update(
                            index_elements=[RoadmTypeModel.roadm_uuid],
                            set_=dict(
                                opticalconfig_uuid = stmt.excluded.opticalconfig_uuid
                            )
                        )
                    stmt = stmt.returning(RoadmTypeModel.roadm_uuid)
                    roadm_id = session.execute(stmt).fetchone()
    
                    LOGGER.warning('channels={:s}'.format(str(channels)))
                    stmt = insert(ChannelModel).values(channels)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[ChannelModel.channel_uuid],
                        set_=dict(
                            band_name           = stmt.excluded.band_name,
                            lower_frequency     = stmt.excluded.lower_frequency,
                            upper_frequency     = stmt.excluded.upper_frequency,
                            type                = stmt.excluded.type,
                            status              = stmt.excluded.status,
                            dest_port           = stmt.excluded.dest_port,
                            src_port            = stmt.excluded.src_port,
                            channel_index       = stmt.excluded.channel_index,
                            optical_band_parent = stmt.excluded.optical_band_parent,
                        )
                    )
                    stmt = stmt.returning(ChannelModel.channel_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()
             
            if config_type == DeviceTypeEnum.OPEN_ROADM._value_:
                if (len(roadms)>0):
                    stmt = insert(RoadmTypeModel).values(roadms)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[RoadmTypeModel.roadm_uuid],
                        set_=dict(
                            opticalconfig_uuid = stmt.excluded.opticalconfig_uuid
                        )
                    )
                    stmt = stmt.returning(RoadmTypeModel.roadm_uuid)
                    roadm_id = session.execute(stmt).fetchone() 
    
                if len(interfaces) >0 :      
                    stmt = insert(ORInterfaceModel).values(interfaces)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[ORInterfaceModel.interface_uuid],
                        set_=dict(
                            name                 = stmt.excluded.name,
                            frequency            = stmt.excluded.frequency,
                            administrative_state = stmt.excluded.administrative_state,
                            type                 = stmt.excluded.type,
                            circuit_pack_name    = stmt.excluded.circuit_pack_name,
                            port                 = stmt.excluded.port,
                            interface_list       = stmt.excluded.interface_list,
                            width                = stmt.excluded.width,
                        )
                    )
                    stmt = stmt.returning(ORInterfaceModel.interface_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()            
    
        opticalconfig_id = run_transaction(sessionmaker(bind=db_engine), callback)
        return {'opticalconfig_uuid': opticalconfig_id}
    
    def update_opticalconfig(db_engine : Engine, request : OpticalConfig):
        opticalconfig_id = OpticalConfigId()
        device_id = request.device_id
        device_uuid = request.device_id.device_uuid.uuid
        channels = []
        transponder = []
        roadms = []
        channel_namespace = None
        OpticalConfig_data = []
        config_type = None
        #is_transpondre = False
        opticalconfig_uuid = opticalconfig_get_uuid(device_id)
    
        if request.config :
            config = json.loads(request.config)
    
            if  'new_config' in config:
                if 'type' in config:
                    config_type = config['type']
                if "type" in config['new_config'] and config_type is None:
                    config_type = config['new_config']["type"]    
                if 'channel_namespace' in config['new_config']:
                    channel_namespace = config['new_config'] ['channel_namespace']
    
                if config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:
                    is_transpondre = True
                    transceivers = []
                    if channel_namespace is None and  'channel_namespace' in config:
                        channel_namespace=config['channel_namespace']
    
                    if 'transceivers' in config['new_config'] and len(config['new_config']['transceivers']['transceiver']) > 0:
                        transceivers = [transceiver for transceiver in config['new_config'] ['transceivers']['transceiver']]
                        
                    if 'channels' in config['new_config'] and len(config['new_config']['channels']) > 0:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                
                        for channel_params in config['new_config']['channels']:
                            channels.append({
                                # "opticalconfig_uuid":opticalconfig_uuid,
                                "transponder_uuid"    : transponder_get_uuid(device_id),
                                "channel_uuid"        : channel_get_uuid(channel_params['name']['index'],device_uuid),
                                "channel_name"        : channel_params['name']['index'],
                                "frequency"           : int(channel_params["frequency"]) if "frequency" in channel_params  else 0,
                                "operational_mode"    : int(channel_params["operational-mode"]) if "operational-mode" in channel_params else 0,
                                "target_output_power" : channel_params["target-output-power"] if "target-output-power" in channel_params else '',
                                "status"              : channel_params["status"] if "status" in channel_params else ""
                            })
                    elif 'flow_handled' in config and 'new_config' in config :
                        target_config = config['new_config']
                        dest_pair = None
                        src = None
                        dst = None
                        src_pair = config['flow_handled'][0]
                        
                        src, dst = src_pair
                        if src_pair is None and len(config['flow_handled'])>1 :
                            dest_pair = config['flow_handled'][1]
                            src, dst = dest_pair
                        channel_index = src if src is not None and src !='0' else dst
                        channel_name = f"channel-{channel_index}"
                        channels.append({
                            # "opticalconfig_uuid":opticalconfig_uuid,
                            "transponder_uuid"    : transponder_get_uuid(device_id),
                            "channel_uuid"        : channel_get_uuid(channel_name,device_uuid),
                            "channel_name"        : channel_name,
                            "frequency"           : int(target_config["frequency"]) if "frequency" in target_config  else 0,
                            "operational_mode"    : int(target_config["operational-mode"]) if "operational-mode" in target_config else 0,
                            "target_output_power" : target_config["target-output-power"] if "target-output-power" in target_config else '',
                            "status"              : target_config["status"] if "status" in target_config else ""
                        })
    
                    transponder.append({
                        "transponder_uuid"  : transponder_get_uuid(device_id),
                        "transcievers"      : transceivers,
                        "interfaces"        : None,
                        "opticalconfig_uuid": opticalconfig_uuid,
                    })
    
                if config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                    if channel_namespace is None and  'channel_namespace' in config['new_config']:
                        channel_namespace=config['new_config']['channel_namespace']
                    if 'is_opticalband' in config and not config['is_opticalband']:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                        if 'flow_handled' in config  and len(config['flow_handled'])>0 :
                            num = 0    
                            flow_id = config["new_config"]["flow_id"] if 'flow_id' in config['new_config'] else None
                            for flow in config['flow_handled']:
                                src_port, dest_port = flow
                                channel_index = flow_id + num
                                num += 1
                                channels.append({
                                    # "opticalconfig_uuid":opticalconfig_uuid,
                                    "roadm_uuid"          : roadm_get_uuid(device_id),
                                    "channel_uuid"        : channel_get_uuid(f'media_channel_{channel_index}',device_uuid),
                                    "band_name"           : config['new_config']['band_type'],
                                    "lower_frequency"     : int(int(config['new_config']['frequency']) - (int(config['new_config']['band'])/2)) if "frequency" in config['new_config']  else 0,
                                    "upper_frequency"     : int(int(config['new_config']['frequency']) + (int(config['new_config']['band'])/2)) if "frequency" in config['new_config']  else 0,
                                    "dest_port"           : dest_port,
                                    "src_port"            : src_port,
                                    "status"              : config['new_config']["status"] if "status" in config['new_config'] else "",
                                    "type"                : 'media_channel',
                                    "optical_band_parent" : str( config['new_config']['ob_id']) if 'ob_id' in config['new_config'] else None,
                                    "channel_index"       : str(channel_index) if channel_index is not None else None
                                })
                    if 'is_opticalband' in config and config['is_opticalband']:
                        #channels = [channel['name']['index'] for channel in config['channels']]
                        if 'flow_handled' in config and len(config['flow_handled']) > 0:
                            ob_id = config['new_config']['ob_id'] if 'ob_id' in config['new_config'] else None
                            num = 0
                            for flow in config['flow_handled']:
                                src_port, dest_port = flow
                                channel_index = ob_id + num
                                num += 1
                                channels.append({
                                    # "opticalconfig_uuid":opticalconfig_uuid,
                                    "roadm_uuid"      : roadm_get_uuid(device_id),
                                    "channel_uuid"    : channel_get_uuid(f'optical_bands_{channel_index}',device_uuid),
                                    "band_name"       : config['new_config']['band_type'],
                                    "lower_frequency" : int(config['new_config']["low-freq"]) if "low-freq" in config['new_config']  else 0,
                                    "upper_frequency" : int(config['new_config']["up-freq"]) if "up-freq" in config['new_config']  else 0,
                                    "dest_port"       : dest_port,
                                    "src_port"        : src_port,
                                    "status"          : config['new_config']["status"] if "status" in config['new_config'] else "",
                                    "type"            : 'optical_band',
                                    "channel_index"   : str( channel_index) if channel_index is not None else None
                                })
    
                    roadms.append({
                        "roadm_uuid"        : roadm_get_uuid(device_id),
                        "opticalconfig_uuid": opticalconfig_uuid,
                    })
    
            OpticalConfig_data.append({
                "opticalconfig_uuid": opticalconfig_uuid,
                # "transcievers"      : transceivers,
                # "interfaces"        :"",
                "channel_namespace" : channel_namespace ,
                "endpoints"         : [json.dumps(endpoint) for endpoint in config['new_config'].get("endpoints",[])],
                "device_uuid"       : device_uuid,
                "type"              : config_type
            })
    
        def callback(session:Session)->bool:
            stmt = insert(OpticalConfigModel).values(OpticalConfig_data)
            stmt = stmt.on_conflict_do_update(
                index_elements=[OpticalConfigModel.opticalconfig_uuid],
                set_=dict(
                    channel_namespace=stmt.excluded.channel_namespace
                )
            )
            stmt = stmt.returning(OpticalConfigModel.opticalconfig_uuid)
            opticalconfig_id = session.execute(stmt).fetchone()
            if config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:
                if (len(transponder)>0):
                    stmt = insert(TransponderTypeModel).values(transponder)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[TransponderTypeModel.transponder_uuid],
                        set_=dict(
                            transcievers = stmt.excluded.transcievers,
                        )
                    )
                    stmt = stmt.returning(TransponderTypeModel.transponder_uuid)
                    transponder_id = session.execute(stmt).fetchone()
    
                if len(channels) > 0:
                    stmt = insert(OpticalChannelModel).values(channels)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[OpticalChannelModel.channel_uuid],
                        set_=dict(
                            channel_name        = stmt.excluded.channel_name,
                            frequency           = stmt.excluded.frequency,
                            operational_mode    = stmt.excluded.operational_mode,
                            target_output_power = stmt.excluded.target_output_power,
                            status              = stmt.excluded.status,
                        )
                    )
                    stmt = stmt.returning(OpticalChannelModel.channel_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()
            if config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                if len(roadms) > 0:
                    stmt = insert(RoadmTypeModel).values(roadms)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[RoadmTypeModel.roadm_uuid],
                        set_=dict(
                            circuits = stmt.excluded.circuits
                        )
                    )
                    stmt = stmt.returning(RoadmTypeModel.roadm_uuid)
                    roadm_id = session.execute(stmt).fetchone()
                    
                if (channels is not None and  len(channels) > 0):
                    stmt = insert(ChannelModel).values(channels)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[ChannelModel.channel_uuid ],
                        set_=dict(
                            band_name       = stmt.excluded.band_name,
                            lower_frequency = stmt.excluded.lower_frequency,
                            upper_frequency = stmt.excluded.upper_frequency,
                            type            = stmt.excluded.type,
                            status          = stmt.excluded.status,
                            dest_port       = stmt.excluded.dest_port,
                            src_port        = stmt.excluded.src_port,
                        )
                    )
                    stmt = stmt.returning(ChannelModel.channel_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()
    
        opticalconfig_id = run_transaction(sessionmaker(bind=db_engine), callback)
        return {'opticalconfig_uuid': opticalconfig_id}
    
    def select_opticalconfig(db_engine : Engine, request : OpticalConfigId):
        def callback(session : Session) -> OpticalConfig:
            result = OpticalConfig()
            stmt = session.query(OpticalConfigModel)
            stmt = stmt.filter_by(opticalconfig_uuid=request.opticalconfig_uuid)
            obj = stmt.first()
            if obj is not None:
                result.config = json.dumps(obj.dump())
                ids_obj = obj.dump_id()
                result.opticalconfig_id.opticalconfig_uuid = ids_obj["opticalconfig_uuid"]
                result.device_id.device_uuid.uuid=ids_obj["device_uuid"]
            return result
        return run_transaction(sessionmaker(bind=db_engine, expire_on_commit=False), callback)
    
    def delete_opticalconfig(db_engine : Engine, messagebroker : MessageBroker, request : OpticalConfigId):
        opticalconfig_uuid = request.opticalconfig_uuid
        def callback(session : Session):
            #query = session.query(OpticalConfigModel)
            num_deleted = session.query(OpticalConfigModel).filter_by(opticalconfig_uuid=opticalconfig_uuid).delete()
            return num_deleted > 0
        deleted = run_transaction(sessionmaker(bind=db_engine), callback)
        if deleted:
            notify_event_opticalconfig(messagebroker, EventTypeEnum.EVENTTYPE_REMOVE, opticalconfig_uuid)
        return Empty()
    
    def delete_opticalchannel(db_engine : Engine, messagebroker : MessageBroker, request : OpticalConfig):
        config = json.loads(request.config)
        device_id = request.device_id
        device_uuid =  request.device_id.device_uuid.uuid
        opticalconfig_uuid = request.opticalconfig_id.opticalconfig_uuid
        channels = []
        config_type = None
    
        if "type" in config :
            config_type= config["type"]    
        if 'new_config' in config:
            if config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:  
                for flow in config['flow']:
                    src,dest = flow
                    channel_index= src if src is not None and  src!='0' else dest
                    channel_name= f"channel-{channel_index}"
                    channels.append({
                        # "opticalconfig_uuid":opticalconfig_uuid,
                        "transponder_uuid"   : transponder_get_uuid(device_id),
                        "channel_uuid"       : channel_get_uuid(channel_name ,device_uuid),
                        "channel_name"       : channel_name ,
                        "frequency"          : 0,
                        "operational_mode"   : None,
                        "target_output_power": None,
                        "status"             : "DISABLED"
                    })
            elif config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                channel_num = 0
                if 'flow' in config :
                    if 'is_opticalband' in config:
                        if config['is_opticalband']:
                            ob_id = config['new_config']['ob_id'] if 'ob_id' in config['new_config'] else None
                            if len(config['flow']) == 0:
                                channel_index = ob_id + channel_num
                                channel_name = f'optical_bands_{channel_index}' 
                                channels.append(channel_get_uuid(channel_name, device_uuid))
                            else:
                                for flow in config['flow']:
                                    channel_index = ob_id+channel_num
                                    channel_num +=1
                                    channel_name = f'optical_bands_{channel_index}' 
                                    channels.append(channel_get_uuid(channel_name, device_uuid))
                        else:
                            if config['flow'] == 0:
                                channel_num = 1
                                channel_name = f'media_channel_{channel_num}'
                                channels.append(channel_get_uuid(channel_name, device_uuid))
                            else:
                                for flow in config['flow']:
                                    channel_num += 1
                                    channel_name = f'media_channel_{channel_num}'
                                    channels.append(channel_get_uuid(channel_name, device_uuid))
    
        def callback(session : Session):
            all_suceed = []
            if config_type == DeviceTypeEnum.OPTICAL_ROADM._value_:
                for channel_uuid in channels:
                    num_deleted = session.query(ChannelModel).filter_by(channel_uuid=channel_uuid).delete()
                    all_suceed.append(num_deleted > 0)
            elif config_type == DeviceTypeEnum.OPTICAL_TRANSPONDER._value_:
                if len(channels) > 0:
                    stmt = insert(OpticalChannelModel).values(channels)
                    stmt = stmt.on_conflict_do_update(
                        index_elements=[OpticalChannelModel.channel_uuid ],
                        set_=dict(
                            channel_name= stmt.excluded.channel_name ,
                            frequency = stmt.excluded.frequency,
                            operational_mode=stmt.excluded.operational_mode,
                            target_output_power=stmt.excluded.target_output_power,
                            status=stmt.excluded.status
                        )
                    )
                    stmt = stmt.returning(OpticalChannelModel.channel_uuid)
                    opticalChannel_id = session.execute(stmt).fetchone()
                    all_suceed.append(True)
            return all_suceed
    
        all_deleted = run_transaction(sessionmaker(bind=db_engine), callback)
        for stat in all_deleted:
            if not stat: return
        notify_event_opticalconfig(messagebroker, EventTypeEnum.EVENTTYPE_REMOVE, opticalconfig_uuid)
        return Empty()