# 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 datetime, logging
import json
from sqlalchemy.dialects.postgresql import insert
from sqlalchemy.engine import Engine
from sqlalchemy.orm import Session, selectinload, sessionmaker
from sqlalchemy_cockroachdb import run_transaction
from typing import Dict, List, Optional, Set, Tuple
from common.method_wrappers.ServiceExceptions import InvalidArgumentException, NotFoundException
from common.proto.context_pb2 import Device, DeviceFilter, DeviceId, TopologyId
from common.tools.grpc.Tools import grpc_message_to_json_string
from common.tools.object_factory.Device import json_device_id
from context.service.database.uuids.Topology import topology_get_uuid
from .models.DeviceModel import DeviceModel
from .models.EndPointModel import EndPointModel
from .models.TopologyModel import TopologyDeviceModel
from .models.ComponentModel import ComponentModel
from .models.enums.DeviceDriver import grpc_to_enum__device_driver
from .models.enums.DeviceOperationalStatus import grpc_to_enum__device_operational_status
from .models.enums.KpiSampleType import grpc_to_enum__kpi_sample_type
from .uuids.Device import device_get_uuid
from .uuids.EndPoint import endpoint_get_uuid
from .ConfigRule import compose_config_rules_data, upsert_config_rules
from .Component import compose_components_data
LOGGER = logging.getLogger(__name__)
def device_list_ids(db_engine : Engine) -> List[Dict]:
def callback(session : Session) -> List[Dict]:
obj_list : List[DeviceModel] = session.query(DeviceModel).all()
return [obj.dump_id() for obj in obj_list]
return run_transaction(sessionmaker(bind=db_engine), callback)
def device_list_objs(db_engine : Engine) -> List[Dict]:
def callback(session : Session) -> List[Dict]:
obj_list : List[DeviceModel] = session.query(DeviceModel)\
.options(selectinload(DeviceModel.endpoints))\
.options(selectinload(DeviceModel.config_rules))\
.options(selectinload(DeviceModel.components))\
.all()
#.options(selectinload(DeviceModel.components))\
return [obj.dump() for obj in obj_list]
return run_transaction(sessionmaker(bind=db_engine), callback)
def device_get(db_engine : Engine, request : DeviceId) -> Dict:
device_uuid = device_get_uuid(request, allow_random=False)
def callback(session : Session) -> Optional[Dict]:
obj : Optional[DeviceModel] = session.query(DeviceModel)\
.options(selectinload(DeviceModel.endpoints))\
.options(selectinload(DeviceModel.config_rules))\
.filter_by(device_uuid=device_uuid).one_or_none()
#.options(selectinload(DeviceModel.components))\
return None if obj is None else obj.dump()
obj = run_transaction(sessionmaker(bind=db_engine), callback)
if obj is None:
raw_device_uuid = request.device_uuid.uuid
raise NotFoundException('Device', raw_device_uuid, extra_details=[
'device_uuid generated was: {:s}'.format(device_uuid)
])
return obj
def device_set(db_engine : Engine, request : Device) -> Tuple[Dict, bool]:
raw_device_uuid = request.device_id.device_uuid.uuid
raw_device_name = request.name
device_name = raw_device_uuid if len(raw_device_name) == 0 else raw_device_name
device_uuid = device_get_uuid(request.device_id, device_name=device_name, allow_random=True)
if len(request.controller_id.device_uuid.uuid) > 0:
controller_uuid = device_get_uuid(request.controller_id, allow_random=False)
else:
controller_uuid = None
device_type = request.device_type
oper_status = grpc_to_enum__device_operational_status(request.device_operational_status)
device_drivers = [grpc_to_enum__device_driver(d) for d in request.device_drivers]
now = datetime.datetime.utcnow()
topology_uuids : Set[str] = set()
related_topologies : List[Dict] = list()
# By default, always add device to default Context/Topology
_,topology_uuid = topology_get_uuid(TopologyId(), allow_random=False, allow_default=True)
related_topologies.append({
'topology_uuid': topology_uuid,
'device_uuid' : device_uuid,
})
topology_uuids.add(topology_uuid)
endpoints_data : List[Dict] = list()
for i, endpoint in enumerate(request.device_endpoints):
endpoint_device_uuid = endpoint.endpoint_id.device_id.device_uuid.uuid
if len(endpoint_device_uuid) == 0: endpoint_device_uuid = device_uuid
if endpoint_device_uuid not in {raw_device_uuid, device_uuid}:
raise InvalidArgumentException(
'request.device_endpoints[{:d}].device_id.device_uuid.uuid'.format(i), endpoint_device_uuid,
['should be == request.device_id.device_uuid.uuid({:s})'.format(raw_device_uuid)]
)
raw_endpoint_uuid = endpoint.endpoint_id.endpoint_uuid.uuid
raw_endpoint_name = endpoint.name
endpoint_topology_uuid, endpoint_device_uuid, endpoint_uuid = endpoint_get_uuid(
endpoint.endpoint_id, endpoint_name=raw_endpoint_name, allow_random=True)
endpoint_name = raw_endpoint_uuid if len(raw_endpoint_name) == 0 else raw_endpoint_name
kpi_sample_types = [grpc_to_enum__kpi_sample_type(kst) for kst in endpoint.kpi_sample_types]
endpoints_data.append({
'endpoint_uuid' : endpoint_uuid,
'device_uuid' : endpoint_device_uuid,
'topology_uuid' : endpoint_topology_uuid,
'name' : endpoint_name,
'endpoint_type' : endpoint.endpoint_type,
'kpi_sample_types' : kpi_sample_types,
'endpoint_location': grpc_message_to_json_string(endpoint.endpoint_location),
'created_at' : now,
'updated_at' : now,
})
if endpoint_topology_uuid not in topology_uuids:
related_topologies.append({
'topology_uuid': endpoint_topology_uuid,
'device_uuid' : device_uuid,
})
topology_uuids.add(endpoint_topology_uuid)
components_data = compose_components_data(request.device_config.config_rules, now, device_uuid=device_uuid)
config_rules = compose_config_rules_data(request.device_config.config_rules, now, device_uuid=device_uuid)
device_data = [{
'device_uuid' : device_uuid,
'device_name' : device_name,
'device_type' : device_type,
'device_operational_status': oper_status,
'device_drivers' : device_drivers,
'created_at' : now,
'updated_at' : now,
}]
if controller_uuid is not None:
device_data[0]['controller_uuid'] = controller_uuid
def callback(session : Session) -> bool:
stmt = insert(DeviceModel).values(device_data)
stmt = stmt.on_conflict_do_update(
index_elements=[DeviceModel.device_uuid],
set_=dict(
device_name = stmt.excluded.device_name,
device_type = stmt.excluded.device_type,
device_operational_status = stmt.excluded.device_operational_status,
device_drivers = stmt.excluded.device_drivers,
updated_at = stmt.excluded.updated_at,
)
)
stmt = stmt.returning(DeviceModel.created_at, DeviceModel.updated_at)
created_at,updated_at = session.execute(stmt).fetchone()
updated = updated_at > created_at
updated_endpoints = False
if len(endpoints_data) > 0:
stmt = insert(EndPointModel).values(endpoints_data)
stmt = stmt.on_conflict_do_update(
index_elements=[EndPointModel.endpoint_uuid],
set_=dict(
name = stmt.excluded.name,
endpoint_type = stmt.excluded.endpoint_type,
kpi_sample_types = stmt.excluded.kpi_sample_types,
updated_at = stmt.excluded.updated_at,
)
)
stmt = stmt.returning(EndPointModel.created_at, EndPointModel.updated_at)
endpoint_updates = session.execute(stmt).fetchall()
updated_endpoints = any([(updated_at > created_at) for created_at,updated_at in endpoint_updates])
if not updated or len(related_topologies) > 1:
# Only update topology-device relations when device is created (not updated) or when endpoints are
# modified (len(related_topologies) > 1).
session.execute(insert(TopologyDeviceModel).values(related_topologies).on_conflict_do_nothing(
index_elements=[TopologyDeviceModel.topology_uuid, TopologyDeviceModel.device_uuid]
))
updated_components = False
if len(components_data) > 0:
stmt = insert(ComponentModel).values(components_data)
stmt = stmt.on_conflict_do_update(
index_elements=[ComponentModel.component_uuid],
set_=dict(
name = str(stmt.excluded.name),
type = str(stmt.excluded.type),
attributes = str(stmt.excluded.attributes),
updated_at = stmt.excluded.updated_at,
)
)
stmt = stmt.returning(ComponentModel.created_at, ComponentModel.updated_at)
component_updates = session.execute(stmt).fetchall()
updated_components = any([(updated_at > created_at) for created_at,updated_at in component_updates])
changed_config_rules = upsert_config_rules(session, config_rules, device_uuid=device_uuid)
return updated or updated_components or changed_config_rules
updated = run_transaction(sessionmaker(bind=db_engine), callback)
return json_device_id(device_uuid),updated
def device_delete(db_engine : Engine, request : DeviceId) -> Tuple[Dict, bool]:
device_uuid = device_get_uuid(request, allow_random=False)
def callback(session : Session) -> bool:
num_deleted = session.query(DeviceModel).filter_by(device_uuid=device_uuid).delete()
return num_deleted > 0
deleted = run_transaction(sessionmaker(bind=db_engine), callback)
return json_device_id(device_uuid),deleted
def device_select(db_engine : Engine, request : DeviceFilter) -> List[Dict]:
device_uuids = [
device_get_uuid(device_id, allow_random=False)
for device_id in request.device_ids.device_ids
]
dump_params = dict(
include_endpoints =request.include_endpoints,
include_config_rules=request.include_config_rules,
include_components =request.include_components,
)
def callback(session : Session) -> List[Dict]:
query = session.query(DeviceModel)
if request.include_endpoints : query = query.options(selectinload(DeviceModel.endpoints))
if request.include_config_rules: query = query.options(selectinload(DeviceModel.config_rules))
#if request.include_components : query = query.options(selectinload(DeviceModel.components))
obj_list : List[DeviceModel] = query.filter(DeviceModel.device_uuid.in_(device_uuids)).all()
return [obj.dump(**dump_params) for obj in obj_list]
return run_transaction(sessionmaker(bind=db_engine), callback)