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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 json
from sqlalchemy import Column, DateTime, ForeignKey, String
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import relationship
from typing import Dict
from ._Base import _Base
class ComponentModel(_Base): #Inherited functionality from the base class _Base
__tablename__ = 'device_component' #Name of the table in the DB associtaed with this model
component_uuid = Column(UUID(as_uuid=False), primary_key=True) #Unique identifier that serves as a primary key for this table
device_uuid = Column(ForeignKey('device.device_uuid',ondelete='CASCADE' ), nullable=False, index=True) #Foreign Key relationship with the field device_uuid from the Device table (CASCADE' behavior for deletion, meaning when a device is deleted, its components will also be dele)
# component_name = Column(String, nullable=False) #String field that stores the name of the component
data = Column(String, nullable=False) #String field that stores data about the component
created_at = Column(DateTime, nullable=False) #Stores the creaton timestamp for the component
updated_at = Column(DateTime, nullable=False) #Stores the last upadted timestamp for the component
device = relationship('DeviceModel', back_populates='components')# lazy='selectin'#Defines a relationship between ComponentModel and DeviceModel
#Represents a 1:n relationship where 1 device -> N components // The relationship is defined by the FK device_uuid
def dump_id(self) -> Dict:
return{
'device_id' : self.device.dump_id(),
'component_uuid': {'uuid': self.component_uuid},
}
def dump(self) -> Dict:
return {
'component_id' : self.dump_id(),
'data' : self.data,
}
def dump_name(self) -> Dict:
return {
'component_id' : self.dump_id(),
'device_name' : self.device.device_name,
'component_name': self.name,
}