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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.
import enum, json
from sqlalchemy import CheckConstraint, Column, Enum, ForeignKey, Integer, String
from typing import Dict
from ._Base import _Base
# Enum values should match name of field in ConstraintModel
CUSTOM = 'custom'
ENDPOINT_LOCATION_REGION = 'ep_loc_region'
ENDPOINT_LOCATION_GPSPOSITION = 'ep_loc_gpspos'
ENDPOINT_PRIORITY = 'ep_priority'
SLA_AVAILABILITY = 'sla_avail'
class ConstraintModel(_Base):
__tablename__ = 'constraint'
constraint_uuid = Column(UUID(as_uuid=False), primary_key=True)
service_uuid = Column(ForeignKey('service.service_uuid', ondelete='CASCADE'), nullable=True)
slice_uuid = Column(ForeignKey('slice.slice_uuid', ondelete='CASCADE'), nullable=True)
position = Column(Integer, nullable=False)
kind = Column(Enum(ConstraintKindEnum), nullable=False)
data = Column(String, nullable=False)
__table_args__ = (
CheckConstraint(position >= 0, name='check_position_value'),
#UniqueConstraint('service_uuid', 'position', name='unique_per_service'),
#UniqueConstraint('slice_uuid', 'position', name='unique_per_slice' ),
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)
def dump(self) -> Dict:
return {self.kind.value: json.loads(self.data)}
#import logging, operator
#from typing import Dict, List, Optional, Tuple, Type, Union
#from common.orm.HighLevel import get_object, get_or_create_object, update_or_create_object
#from common.orm.backend.Tools import key_to_str
#from common.proto.context_pb2 import Constraint
#from common.tools.grpc.Tools import grpc_message_to_json_string
#from .EndPointModel import EndPointModel
#from .Tools import fast_hasher
#from sqlalchemy import Column, ForeignKey, String, Float, CheckConstraint, Integer, Boolean, Enum
#from sqlalchemy.dialects.postgresql import UUID
#from context.service.database.models._Base import Base
#import enum
#
#LOGGER = logging.getLogger(__name__)
#
#def remove_dict_key(dictionary : Dict, key : str):
# dictionary.pop(key, None)
# return dictionary
#
#class ConstraintsModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'Constraints'
# constraints_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
#
# @staticmethod
# def main_pk_name():
# return 'constraints_uuid'
#
#
# def dump(self, constraints) -> List[Dict]:
# constraints = sorted(constraints, key=operator.itemgetter('position'))
# return [remove_dict_key(constraint, 'position') for constraint in constraints]
#
#
#class ConstraintCustomModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'ConstraintCustom'
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# constraint_type = Column(String, nullable=False)
# constraint_value = Column(String, nullable=False)
#
# @staticmethod
# def main_pk_name():
# return 'constraint_uuid'
#
#
# def dump(self) -> Dict: # pylint: disable=arguments-differ
# return {'custom': {'constraint_type': self.constraint_type, 'constraint_value': self.constraint_value}}
#
#
#Union_ConstraintEndpoint = Union[
# 'ConstraintEndpointLocationGpsPositionModel', 'ConstraintEndpointLocationRegionModel',
# 'ConstraintEndpointPriorityModel'
#]
#
#class ConstraintEndpointLocationRegionModel(Model): # pylint: disable=abstract-method
# endpoint_fk = ForeignKeyField(EndPointModel)
# region = StringField(required=True, allow_empty=False)
#
# def dump(self) -> Dict: # pylint: disable=arguments-differ
# json_endpoint_id = EndPointModel(self.database, self.endpoint_fk).dump_id()
# return {'endpoint_location': {'endpoint_id': json_endpoint_id, 'location': {'region': self.region}}}
#
## def dump_endpoint_id(endpoint_constraint: Union_ConstraintEndpoint):
## db_endpoints_pks = list(endpoint_constraint.references(EndPointModel))
## num_endpoints = len(db_endpoints_pks)
## if num_endpoints != 1:
## raise Exception('Wrong number({:d}) of associated Endpoints with constraint'.format(num_endpoints))
## db_endpoint = EndPointModel(endpoint_constraint.database, db_endpoints_pks[0])
## return db_endpoint.dump_id()
#
#
#class ConstraintEndpointLocationRegionModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'ConstraintEndpointLocationRegion'
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"))
# region = Column(String, nullable=False)
#
# @staticmethod
# def main_pk_name():
# return 'constraint_uuid'
#
# def dump(self, endpoint) -> Dict: # pylint: disable=arguments-differ
# return {'endpoint_location': {'endpoint_id': endpoint.dump_id(), 'region': self.region}}
#
# def dump(self) -> Dict: # pylint: disable=arguments-differ
# gps_position = {'latitude': self.latitude, 'longitude': self.longitude}
# json_endpoint_id = EndPointModel(self.database, self.endpoint_fk).dump_id()
# return {'endpoint_location': {'endpoint_id': json_endpoint_id, 'location': {'gps_position': gps_position}}}
#
#class ConstraintEndpointPriorityModel(Model): # pylint: disable=abstract-method
# endpoint_fk = ForeignKeyField(EndPointModel)
# priority = IntegerField(required=True, min_value=0)
#
# def dump(self) -> Dict: # pylint: disable=arguments-differ
# json_endpoint_id = EndPointModel(self.database, self.endpoint_fk).dump_id()
# return {'endpoint_priority': {'endpoint_id': json_endpoint_id, 'priority': self.priority}}
#
#class ConstraintEndpointLocationGpsPositionModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'ConstraintEndpointLocationGpsPosition'
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"))
# latitude = Column(Float, CheckConstraint('latitude > -90.0 AND latitude < 90.0'), nullable=False)
# longitude = Column(Float, CheckConstraint('longitude > -90.0 AND longitude < 90.0'), nullable=False)
#
# def dump(self, endpoint) -> Dict: # pylint: disable=arguments-differ
# gps_position = {'latitude': self.latitude, 'longitude': self.longitude}
# return {'endpoint_location': {'endpoint_id': endpoint.dump_id(), 'gps_position': gps_position}}
#
#
#class ConstraintEndpointPriorityModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'ConstraintEndpointPriority'
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"))
# # endpoint_fk = ForeignKeyField(EndPointModel)
# # priority = FloatField(required=True)
# priority = Column(Float, nullable=False)
# @staticmethod
# def main_pk_name():
# return 'constraint_uuid'
#
# def dump(self, endpoint) -> Dict: # pylint: disable=arguments-differ
# return {'endpoint_priority': {'endpoint_id': endpoint.dump_id(), 'priority': self.priority}}
#
#
#class ConstraintSlaAvailabilityModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'ConstraintSlaAvailability'
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# # num_disjoint_paths = IntegerField(required=True, min_value=1)
# num_disjoint_paths = Column(Integer, CheckConstraint('num_disjoint_paths > 1'), nullable=False)
# # all_active = BooleanField(required=True)
# all_active = Column(Boolean, nullable=False)
# @staticmethod
# def main_pk_name():
# return 'constraint_uuid'
#
# def dump(self) -> Dict: # pylint: disable=arguments-differ
# return {'sla_availability': {'num_disjoint_paths': self.num_disjoint_paths, 'all_active': self.all_active}}
#
#Union_SpecificConstraint = Union[
# ConstraintCustomModel, ConstraintEndpointLocationRegionModel, ConstraintEndpointLocationGpsPositionModel,
# ConstraintEndpointPriorityModel, ConstraintSlaAvailabilityModel,
#]
#
#class ConstraintModel(Base): # pylint: disable=abstract-method
# __tablename__ = 'Constraint'
# # pk = PrimaryKeyField()
# # constraints_fk = ForeignKeyField(ConstraintsModel)
# constraint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
# constraints_uuid = Column(UUID(as_uuid=False), ForeignKey("Constraints.constraints_uuid"), primary_key=True)
# # kind = EnumeratedField(ConstraintKindEnum)
# kind = Column(Enum(ConstraintKindEnum, create_constraint=False, native_enum=False))
# # position = IntegerField(min_value=0, required=True)
# position = Column(Integer, CheckConstraint('position >= 0'), nullable=False)
# # constraint_custom_fk = ForeignKeyField(ConstraintCustomModel, required=False)
# constraint_custom = Column(UUID(as_uuid=False), ForeignKey("ConstraintCustom.constraint_uuid"))
# # constraint_ep_loc_region_fk = ForeignKeyField(ConstraintEndpointLocationRegionModel, required=False)
# constraint_ep_loc_region = Column(UUID(as_uuid=False), ForeignKey("ConstraintEndpointLocationRegion.constraint_uuid"))
# # constraint_ep_loc_gpspos_fk = ForeignKeyField(ConstraintEndpointLocationGpsPositionModel, required=False)
# constraint_ep_loc_gpspos = Column(UUID(as_uuid=False), ForeignKey("ConstraintEndpointLocationGpsPosition.constraint_uuid"))
# # constraint_ep_priority_fk = ForeignKeyField(ConstraintEndpointPriorityModel, required=False)
# constraint_ep_priority = Column(UUID(as_uuid=False), ForeignKey("ConstraintEndpointPriority.constraint_uuid"),)
# # constraint_sla_avail_fk = ForeignKeyField(ConstraintSlaAvailabilityModel, required=False)
# constraint_sla_avail = Column(UUID(as_uuid=False), ForeignKey("ConstraintSlaAvailability.constraint_uuid"))
#
# @staticmethod
# def main_pk_name():
# return 'constraint_uuid'
#
# # def delete(self) -> None:
# # field_name = 'constraint_{:s}_fk'.format(str(self.kind.value))
# # specific_fk_value : Optional[ForeignKeyField] = getattr(self, field_name, None)
# # if specific_fk_value is None:
# # raise Exception('Unable to find constraint key for field_name({:s})'.format(field_name))
# # specific_fk_class = getattr(ConstraintModel, field_name, None)
# # foreign_model_class : Model = specific_fk_class.foreign_model
# # super().delete()
# # get_object(self.database, foreign_model_class, str(specific_fk_value)).delete()
#
# def dump(self, include_position=True) -> Dict: # pylint: disable=arguments-differ
# field_name = 'constraint_{:s}'.format(str(self.kind.value))
# specific_fk_value = getattr(self, field_name, None)
# if specific_fk_value is None:
# raise Exception('Unable to find constraint key for field_name({:s})'.format(field_name))
# specific_fk_class = getattr(ConstraintModel, field_name, None)
# foreign_model_class: Base = specific_fk_class.foreign_model
# constraint: Union_SpecificConstraint = get_object(self.database, foreign_model_class, str(specific_fk_value))
# result = constraint.dump()
# if include_position:
# result['position'] = self.position
# return result
#
#Tuple_ConstraintSpecs = Tuple[Type, str, Dict, ConstraintKindEnum]
#
#def parse_constraint_custom(grpc_constraint) -> Tuple_ConstraintSpecs:
# constraint_class = ConstraintCustomModel
# str_constraint_id = grpc_constraint.custom.constraint_type
# constraint_data = {
# 'constraint_type' : grpc_constraint.custom.constraint_type,
# 'constraint_value': grpc_constraint.custom.constraint_value,
# }
# return constraint_class, str_constraint_id, constraint_data, ConstraintKindEnum.CUSTOM
#
#def parse_constraint_endpoint_location(db_endpoint, grpc_constraint) -> Tuple_ConstraintSpecs:
# grpc_endpoint_id = grpc_constraint.endpoint_location.endpoint_id
# # str_endpoint_key, db_endpoint = get_endpoint(database, grpc_endpoint_id)
#
# str_constraint_id = db_endpoint.endpoint_uuid
# constraint_data = {'endpoint_fk': db_endpoint}
#
# grpc_location = grpc_constraint.endpoint_location.location
# location_kind = str(grpc_location.WhichOneof('location'))
# if location_kind == 'region':
# constraint_class = ConstraintEndpointLocationRegionModel
# constraint_data.update({'region': grpc_location.region})
# return constraint_class, str_constraint_id, constraint_data, ConstraintKindEnum.ENDPOINT_LOCATION_REGION
# elif location_kind == 'gps_position':
# constraint_class = ConstraintEndpointLocationGpsPositionModel
# gps_position = grpc_location.gps_position
# constraint_data.update({'latitude': gps_position.latitude, 'longitude': gps_position.longitude})
# return constraint_class, str_constraint_id, constraint_data, ConstraintKindEnum.ENDPOINT_LOCATION_GPSPOSITION
# else:
# MSG = 'Location kind {:s} in Constraint of kind endpoint_location is not implemented: {:s}'
# raise NotImplementedError(MSG.format(location_kind, grpc_message_to_json_string(grpc_constraint)))
#
#def parse_constraint_endpoint_priority(db_endpoint, grpc_constraint) -> Tuple_ConstraintSpecs:
# grpc_endpoint_id = grpc_constraint.endpoint_priority.endpoint_id
# # str_endpoint_key, db_endpoint = get_endpoint(database, grpc_endpoint_id)
#
# constraint_class = ConstraintEndpointPriorityModel
# str_constraint_id = db_endpoint.endpoint_uuid
# priority = grpc_constraint.endpoint_priority.priority
# constraint_data = {'endpoint_fk': db_endpoint, 'priority': priority}
#
# return constraint_class, str_constraint_id, constraint_data, ConstraintKindEnum.ENDPOINT_PRIORITY
#
#def parse_constraint_sla_availability(grpc_constraint) -> Tuple_ConstraintSpecs:
# constraint_class = ConstraintSlaAvailabilityModel
# str_constraint_id = ''
# constraint_data = {
# 'num_disjoint_paths' : grpc_constraint.sla_availability.num_disjoint_paths,
# 'all_active': grpc_constraint.sla_availability.all_active,
# }
# return constraint_class, str_constraint_id, constraint_data, ConstraintKindEnum.SLA_AVAILABILITY
#
#CONSTRAINT_PARSERS = {
# 'custom' : parse_constraint_custom,
# 'endpoint_location' : parse_constraint_endpoint_location,
# 'endpoint_priority' : parse_constraint_endpoint_priority,
# 'sla_availability' : parse_constraint_sla_availability,
#}
#
#Union_ConstraintModel = Union[
# ConstraintCustomModel, ConstraintEndpointLocationGpsPositionModel, ConstraintEndpointLocationRegionModel,
# ConstraintEndpointPriorityModel, ConstraintSlaAvailabilityModel
#]
#
## def set_constraint(
## db_constraints : ConstraintsModel, grpc_constraint : Constraint, position : int
## ) -> Tuple[Union_ConstraintModel, bool]:
## grpc_constraint_kind = str(grpc_constraint.WhichOneof('constraint'))
##
## parser = CONSTRAINT_PARSERS.get(grpc_constraint_kind)
## if parser is None:
## raise NotImplementedError('Constraint of kind {:s} is not implemented: {:s}'.format(
## grpc_constraint_kind, grpc_message_to_json_string(grpc_constraint)))
##
## # create specific constraint
## constraint_class, str_constraint_id, constraint_data, constraint_kind = parser(database, grpc_constraint)
## str_constraint_key_hash = fast_hasher(':'.join([constraint_kind.value, str_constraint_id]))
## str_constraint_key = key_to_str([db_constraints.pk, str_constraint_key_hash], separator=':')
## result : Tuple[Union_ConstraintModel, bool] = update_or_create_object(
## database, constraint_class, str_constraint_key, constraint_data)
## db_specific_constraint, updated = result
##
## # create generic constraint
## constraint_fk_field_name = 'constraint_{:s}_fk'.format(constraint_kind.value)
## constraint_data = {
## 'constraints_fk': db_constraints, 'position': position, 'kind': constraint_kind,
## constraint_fk_field_name: db_specific_constraint
## }
## result : Tuple[ConstraintModel, bool] = update_or_create_object(
## database, ConstraintModel, str_constraint_key, constraint_data)
## db_constraint, updated = result
##
## return db_constraint, updated
##
## def set_constraints(
## database : Database, db_parent_pk : str, constraints_name : str, grpc_constraints
## ) -> List[Tuple[Union[ConstraintsModel, ConstraintModel], bool]]:
##
## str_constraints_key = key_to_str([db_parent_pk, constraints_name], separator=':')
## result : Tuple[ConstraintsModel, bool] = get_or_create_object(database, ConstraintsModel, str_constraints_key)
## db_constraints, created = result
##
## db_objects = [(db_constraints, created)]
##
## for position,grpc_constraint in enumerate(grpc_constraints):
## result : Tuple[ConstraintModel, bool] = set_constraint(
## database, db_constraints, grpc_constraint, position)
## db_constraint, updated = result
## db_objects.append((db_constraint, updated))
##
## return db_objects
#def set_constraint(
# database : Database, db_constraints : ConstraintsModel, grpc_constraint : Constraint, position : int
#) -> Tuple[Union_ConstraintModel, bool]:
# grpc_constraint_kind = str(grpc_constraint.WhichOneof('constraint'))
#
# parser = CONSTRAINT_PARSERS.get(grpc_constraint_kind)
# if parser is None:
# raise NotImplementedError('Constraint of kind {:s} is not implemented: {:s}'.format(
# grpc_constraint_kind, grpc_message_to_json_string(grpc_constraint)))
#
# # create specific constraint
# constraint_class, str_constraint_id, constraint_data, constraint_kind = parser(database, grpc_constraint)
# str_constraint_key_hash = fast_hasher(':'.join([constraint_kind.value, str_constraint_id]))
# str_constraint_key = key_to_str([db_constraints.pk, str_constraint_key_hash], separator=':')
# result : Tuple[Union_ConstraintModel, bool] = update_or_create_object(
# database, constraint_class, str_constraint_key, constraint_data)
# db_specific_constraint, updated = result
#
# # create generic constraint
# constraint_fk_field_name = 'constraint_{:s}_fk'.format(constraint_kind.value)
# constraint_data = {
# 'constraints_fk': db_constraints, 'position': position, 'kind': constraint_kind,
# constraint_fk_field_name: db_specific_constraint
# }
# result : Tuple[ConstraintModel, bool] = update_or_create_object(
# database, ConstraintModel, str_constraint_key, constraint_data)
# db_constraint, updated = result
#
# return db_constraint, updated
#
#def set_constraints(
# database : Database, db_parent_pk : str, constraints_name : str, grpc_constraints
#) -> List[Tuple[Union[ConstraintsModel, ConstraintModel], bool]]:
#
# str_constraints_key = key_to_str([constraints_name, db_parent_pk], separator=':')
# result : Tuple[ConstraintsModel, bool] = get_or_create_object(database, ConstraintsModel, str_constraints_key)
# db_constraints, created = result
#
# db_objects = [(db_constraints, created)]
#
# for position,grpc_constraint in enumerate(grpc_constraints):
# result : Tuple[ConstraintModel, bool] = set_constraint(
# database, db_constraints, grpc_constraint, position)
# db_constraint, updated = result
# db_objects.append((db_constraint, updated))
#
# return db_objects