skyline-apiserver/src/skyline_apiserver/db/base.py

54 lines
1.5 KiB
Python

# Copyright 2021 99cloud
#
# 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.
from __future__ import annotations
from contextvars import ContextVar
from databases import Database, DatabaseURL, core
from skyline_apiserver.config import CONF
DATABASE = None
DB = ContextVar("skyline_db", default=None)
class ParallelDatabase(Database):
def connection(self) -> core.Connection:
return core.Connection(self._backend)
async def setup():
db_url = DatabaseURL(CONF.default.database_url)
global DATABASE
if db_url.scheme == "mysql":
DATABASE = ParallelDatabase(
db_url,
minsize=1,
maxsize=100,
echo=CONF.default.debug,
charset="utf8",
client_flag=0,
)
elif db_url.scheme == "sqlite":
DATABASE = ParallelDatabase(db_url)
else:
raise ValueError("Unsupported database backend")
await DATABASE.connect()
async def inject_db():
global DATABASE
DB.set(DATABASE)