Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
# 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 time
from sqlalchemy.dialects.postgresql import insert
from sqlalchemy.engine import Engine
from sqlalchemy.orm import Session, sessionmaker
from sqlalchemy_cockroachdb import run_transaction
from typing import Dict, List, Optional
from common.proto.context_pb2 import Context, ContextId, ContextIdList, ContextList
from common.rpc_method_wrapper.ServiceExceptions import InvalidArgumentException, NotFoundException
from context.service.database.models.ContextModel import ContextModel
def context_list_ids(db_engine : Engine) -> ContextIdList:
def callback(session : Session) -> List[Dict]:
obj_list : List[ContextModel] = session.query(ContextModel).all()
#.options(selectinload(ContextModel.topology)).filter_by(context_uuid=context_uuid).one_or_none()
return [obj.dump_id() for obj in obj_list]
return ContextIdList(context_ids=run_transaction(sessionmaker(bind=db_engine), callback))
def context_list_objs(db_engine : Engine) -> ContextList:
def callback(session : Session) -> List[Dict]:
obj_list : List[ContextModel] = session.query(ContextModel).all()
#.options(selectinload(ContextModel.topology)).filter_by(context_uuid=context_uuid).one_or_none()
return [obj.dump() for obj in obj_list]
return ContextList(contexts=run_transaction(sessionmaker(bind=db_engine), callback))
def context_get(db_engine : Engine, request : ContextId) -> Context:
context_uuid = request.context_uuid.uuid
def callback(session : Session) -> Optional[Dict]:
obj : Optional[ContextModel] = session.query(ContextModel)\
.filter_by(context_uuid=context_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: raise NotFoundException('Context', context_uuid)
return Context(**obj)
def context_set(db_engine : Engine, request : Context) -> bool:
context_uuid = request.context_id.context_uuid.uuid
context_name = request.name
for i, topology_id in enumerate(request.topology_ids):
topology_context_uuid = topology_id.context_id.context_uuid.uuid
if topology_context_uuid != context_uuid:
raise InvalidArgumentException(
'request.topology_ids[{:d}].context_id.context_uuid.uuid'.format(i), topology_context_uuid,
['should be == {:s}({:s})'.format('request.context_id.context_uuid.uuid', context_uuid)])
for i, service_id in enumerate(request.service_ids):
service_context_uuid = service_id.context_id.context_uuid.uuid
if service_context_uuid != context_uuid:
raise InvalidArgumentException(
'request.service_ids[{:d}].context_id.context_uuid.uuid'.format(i), service_context_uuid,
['should be == {:s}({:s})'.format('request.context_id.context_uuid.uuid', context_uuid)])
for i, slice_id in enumerate(request.slice_ids):
slice_context_uuid = slice_id.context_id.context_uuid.uuid
if slice_context_uuid != context_uuid:
raise InvalidArgumentException(
'request.slice_ids[{:d}].context_id.context_uuid.uuid'.format(i), slice_context_uuid,
['should be == {:s}({:s})'.format('request.context_id.context_uuid.uuid', context_uuid)])
def callback(session : Session) -> None:
context_data = [{
'context_uuid': context_uuid,
'context_name': context_name,
'created_at' : time.time(),
}]
stmt = insert(ContextModel).values(context_data)
stmt = stmt.on_conflict_do_update(
index_elements=[ContextModel.context_uuid],
set_=dict(context_name = stmt.excluded.context_name)
)
session.execute(stmt)
run_transaction(sessionmaker(bind=db_engine), callback)
return False # TODO: improve and check if created/updated
def context_delete(db_engine : Engine, request : ContextId) -> bool:
context_uuid = request.context_uuid.uuid
def callback(session : Session) -> bool:
num_deleted = session.query(ContextModel).filter_by(context_uuid=context_uuid).delete()
return num_deleted > 0
return run_transaction(sessionmaker(bind=db_engine), callback)