superset get 源码
superset get 代码
文件路径：/superset/key_value/commands/get.py
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 logging
import pickle
from datetime import datetime
from typing import Any, Optional, Union
from uuid import UUID
from sqlalchemy.exc import SQLAlchemyError
from superset import db
from superset.commands.base import BaseCommand
from superset.key_value.exceptions import KeyValueGetFailedError
from superset.key_value.models import KeyValueEntry
from superset.key_value.types import KeyValueResource
from superset.key_value.utils import get_filter
logger = logging.getLogger(__name__)
class GetKeyValueCommand(BaseCommand):
resource: KeyValueResource
key: Union[int, UUID]
def __init__(self, resource: KeyValueResource, key: Union[int, UUID]):
"""
Retrieve a key value entry
:param resource: the resource (dashboard, chart etc)
:param key: the key to retrieve
:return: the value associated with the key if present
"""
self.resource = resource
self.key = key
def run(self) -> Any:
try:
return self.get()
except SQLAlchemyError as ex:
raise KeyValueGetFailedError() from ex
def validate(self) -> None:
pass
def get(self) -> Optional[Any]:
filter_ = get_filter(self.resource, self.key)
entry = (
db.session.query(KeyValueEntry)
.filter_by(**filter_)
.autoflush(False)
.first()
)
if entry and (entry.expires_on is None or entry.expires_on > datetime.now()):
return pickle.loads(entry.value)
return None
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦