hankin
423baff73b
- Docker bridge 网络隔离（8000 端口封死） - Gunicorn 4 Worker 多进程 - Alembic 数据库迁移基线 - 日志轮转 20m×3 - JWT 密钥 + DB 密码 + CORS 收紧 - 3-2-1 备份链路（NAS + R740-B 冷备） - 连接池 pool_pre_ping + pool_recycle=3600
45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
|
|
# Copyright (C) 2016-present the asyncpg authors and contributors
|
|
# <see AUTHORS file>
|
|
#
|
|
# This module is part of asyncpg and is released under
|
|
# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
|
|
import functools
|
|
|
|
from . import exceptions
|
|
|
|
|
|
def guarded(meth):
|
|
"""A decorator to add a sanity check to ConnectionResource methods."""
|
|
|
|
@functools.wraps(meth)
|
|
def _check(self, *args, **kwargs):
|
|
self._check_conn_validity(meth.__name__)
|
|
return meth(self, *args, **kwargs)
|
|
|
|
return _check
|
|
|
|
|
|
class ConnectionResource:
|
|
__slots__ = ('_connection', '_con_release_ctr')
|
|
|
|
def __init__(self, connection):
|
|
self._connection = connection
|
|
self._con_release_ctr = connection._pool_release_ctr
|
|
|
|
def _check_conn_validity(self, meth_name):
|
|
con_release_ctr = self._connection._pool_release_ctr
|
|
if con_release_ctr != self._con_release_ctr:
|
|
raise exceptions.InterfaceError(
|
|
'cannot call {}.{}(): '
|
|
'the underlying connection has been released back '
|
|
'to the pool'.format(self.__class__.__name__, meth_name))
|
|
|
|
if self._connection.is_closed():
|
|
raise exceptions.InterfaceError(
|
|
'cannot call {}.{}(): '
|
|
'the underlying connection is closed'.format(
|
|
self.__class__.__name__, meth_name))
|