superset update 源码
superset update 代码
文件路径：/superset/key_value/commands/update.py
# Licensed to the Apache Software Foundation (ASF) under one
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# 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 KeyValueUpdateFailedError
from superset.key_value.models import KeyValueEntry
from superset.key_value.types import Key, KeyValueResource
from superset.key_value.utils import get_filter
from superset.utils.core import get_user_id
logger = logging.getLogger(__name__)
class UpdateKeyValueCommand(BaseCommand):
resource: KeyValueResource
value: Any
key: Union[int, UUID]
expires_on: Optional[datetime]
def __init__(
self,
resource: KeyValueResource,
key: Union[int, UUID],
value: Any,
expires_on: Optional[datetime] = None,
):
"""
Update a key value entry
:param resource: the resource (dashboard, chart etc)
:param key: the key to update
:param value: the value to persist in the key-value store
:param expires_on: entry expiration time
:return: the key associated with the updated value
"""
self.resource = resource
self.key = key
self.value = value
self.expires_on = expires_on
def run(self) -> Optional[Key]:
try:
return self.update()
except SQLAlchemyError as ex:
db.session.rollback()
raise KeyValueUpdateFailedError() from ex
def validate(self) -> None:
pass
def update(self) -> Optional[Key]:
filter_ = get_filter(self.resource, self.key)
entry: KeyValueEntry = (
db.session.query(KeyValueEntry)
.filter_by(**filter_)
.autoflush(False)
.first()
)
if entry:
entry.value = pickle.dumps(self.value)
entry.expires_on = self.expires_on
entry.changed_on = datetime.now()
entry.changed_by_fk = get_user_id()
db.session.merge(entry)
db.session.commit()
return Key(id=entry.id, uuid=entry.uuid)
return None
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