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Alberto Gonzalez Barneo
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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 datetime, logging, uuid
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.message_broker.MessageBroker import MessageBroker
from common.proto.context_pb2 import Empty
from common.proto.app_pb2 import (
AppList, App, AppId)
from common.tools.grpc.Tools import grpc_message_to_json_string
from .models.AppModel import AppModel
from .models.enums.QKDAppStatus import grpc_to_enum__qkd_app_status
from .models.enums.QKDAppTypes import grpc_to_enum__qkd_app_types
from .uuids.App import app_get_uuid
from common.tools.object_factory.Context import json_context_id
from common.tools.object_factory.App import json_app_id
from context.service.database.uuids.Context import context_get_uuid
#from .Events import notify_event_context, notify_event_device, notify_event_topology
LOGGER = logging.getLogger(__name__)
def app_list_objs(db_engine : Engine) -> AppList:
def callback(session : Session) -> List[Dict]:
obj_list : List[AppModel] = session.query(AppModel)\
.all()
return [obj.dump() for obj in obj_list]
apps = run_transaction(sessionmaker(bind=db_engine), callback)
return AppList(apps=apps)
def app_get(db_engine : Engine, request : AppId) -> App:
app_uuid = app_get_uuid(request, allow_random=False)
def callback(session : Session) -> Optional[Dict]:
obj : Optional[AppModel] = session.query(AppModel)\
.filter_by(app_uuid=app_uuid).one_or_none()
return None if obj is None else obj.dump()
obj = run_transaction(sessionmaker(bind=db_engine), callback)
if obj is None:
raw_app_uuid = request.app_uuid.uuid
raise NotFoundException('App', raw_app_uuid, extra_details=[
'app_uuid generated was: {:s}'.format(app_uuid)
])
return App(**obj)
def app_set(db_engine : Engine, messagebroker : MessageBroker, request : App) -> AppId:
context_uuid = context_get_uuid(request.app_id.context_id, allow_random=False)
raw_app_uuid = request.app_id.app_uuid.uuid
app_uuid = app_get_uuid(request.app_id, allow_random=True)
app_type = request.app_type
app_status = grpc_to_enum__qkd_app_status(request.app_status)
app_type = grpc_to_enum__qkd_app_types(request.app_type)
now = datetime.datetime.utcnow()
app_data = [{
'context_uuid' : context_uuid,
'app_uuid' : app_uuid,
'app_status' : app_status,
'app_type' : app_type,
'server_app_id' : request.server_app_id,
'client_app_id' : request.client_app_id,
'backing_qkdl_uuid' : [qkdl_id.qkdl_uuid.uuid for qkdl_id in request.backing_qkdl_id],
'local_device_uuid' : request.local_device_id.device_uuid.uuid,
'remote_device_uuid' : request.remote_device_id.device_uuid.uuid or None,
'created_at' : now,
'updated_at' : now,
}]
def callback(session : Session) -> Tuple[bool, List[Dict]]:
stmt = insert(AppModel).values(app_data)
stmt = stmt.on_conflict_do_update(
index_elements=[AppModel.app_uuid],
set_=dict(
app_status = stmt.excluded.app_status,
app_type = stmt.excluded.app_type,
server_app_id = stmt.excluded.server_app_id,
client_app_id = stmt.excluded.client_app_id,
backing_qkdl_uuid = stmt.excluded.backing_qkdl_uuid,
local_device_uuid = stmt.excluded.local_device_uuid,
remote_device_uuid = stmt.excluded.remote_device_uuid,
updated_at = stmt.excluded.updated_at,
)
)
stmt = stmt.returning(AppModel.created_at, AppModel.updated_at)
created_at,updated_at = session.execute(stmt).fetchone()
updated = updated_at > created_at
return updated
updated = run_transaction(sessionmaker(bind=db_engine), callback)
context_id = json_context_id(context_uuid)
app_id = json_app_id(app_uuid, context_id=context_id)
#event_type = EventTypeEnum.EVENTTYPE_UPDATE if updated else EventTypeEnum.EVENTTYPE_CREATE
#notify_event_app(messagebroker, event_type, app_id)
#notify_event_context(messagebroker, EventTypeEnum.EVENTTYPE_UPDATE, context_id)
return AppId(**app_id)
def app_get_by_server(db_engine : Engine, request : str) -> App:
def callback(session : Session) -> Optional[Dict]:
obj : Optional[AppModel] = session.query(AppModel)\
.filter_by(server_app_id=request).one_or_none()
return None if obj is None else obj.dump()
obj = run_transaction(sessionmaker(bind=db_engine), callback)
if obj is None:
raise NotFoundException('No app match found for', request)
return App(**obj)
"""
def device_delete(db_engine : Engine, messagebroker : MessageBroker, request : DeviceId) -> Empty:
device_uuid = device_get_uuid(request, allow_random=False)
def callback(session : Session) -> Tuple[bool, List[Dict]]:
query = session.query(TopologyDeviceModel)
query = query.filter_by(device_uuid=device_uuid)
topology_device_list : List[TopologyDeviceModel] = query.all()
topology_ids = [obj.topology.dump_id() for obj in topology_device_list]
num_deleted = session.query(DeviceModel).filter_by(device_uuid=device_uuid).delete()
return num_deleted > 0, topology_ids
deleted, updated_topology_ids = run_transaction(sessionmaker(bind=db_engine), callback)
device_id = json_device_id(device_uuid)
if deleted:
notify_event_device(messagebroker, EventTypeEnum.EVENTTYPE_REMOVE, device_id)
context_ids : Dict[str, Dict] = dict()
topology_ids : Dict[str, Dict] = dict()
for topology_id in updated_topology_ids:
topology_uuid = topology_id['topology_uuid']['uuid']
topology_ids[topology_uuid] = topology_id
context_id = topology_id['context_id']
context_uuid = context_id['context_uuid']['uuid']
context_ids[context_uuid] = context_id
for topology_id in topology_ids.values():
notify_event_topology(messagebroker, EventTypeEnum.EVENTTYPE_UPDATE, topology_id)
for context_id in context_ids.values():
notify_event_context(messagebroker, EventTypeEnum.EVENTTYPE_UPDATE, context_id)
return Empty()
def device_select(db_engine : Engine, request : DeviceFilter) -> DeviceList:
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]
devices = run_transaction(sessionmaker(bind=db_engine), callback)
return DeviceList(devices=devices)
"""