24024
af7c11d7f9
- 新增图像生成接口，支持试用、积分和自定义API Key模式 - 实现生成图片结果异步上传至MinIO存储，带重试机制 - 优化积分预扣除和异常退还逻辑，保障用户积分准确 - 添加获取生成历史记录接口，支持时间范围和分页 - 提供本地字典配置接口，支持模型、比例、提示模板和尺寸 - 实现图片批量上传接口，支持S3兼容对象存储 feat(admin): 增加管理员角色管理与权限分配接口 - 实现角色列表查询、角色创建、更新及删除功能 - 增加权限列表查询接口 - 实现用户角色分配接口，便于统一管理用户权限 - 增加系统字典增删查改接口，支持分类过滤和排序 - 权限控制全面覆盖管理接口，保证安全访问 feat(auth): 完善用户登录注册及权限相关接口与页面 - 实现手机号验证码发送及校验功能，保障注册安全 - 支持手机号注册、登录及退出接口，集成日志记录 - 增加修改密码功能，验证原密码后更新 - 提供动态导航菜单接口，基于权限展示不同菜单 - 实现管理界面路由及日志、角色、字典管理页面访问权限控制 - 添加系统日志查询接口，支持关键词和等级筛选 feat(app): 初始化Flask应用并配置蓝图与数据库 - 创建应用程序工厂，加载配置，初始化数据库和Redis客户端 - 注册认证、API及管理员蓝图，整合路由 - 根路由渲染主页模板 - 应用上下文中自动创建数据库表，保证运行环境准备完毕 feat(database): 提供数据库创建与迁移支持脚本 - 新增数据库创建脚本，支持自动检测是否已存在 - 添加数据库表初始化脚本，支持创建和删除所有表 - 实现RBAC权限初始化，包含基础权限和角色创建 - 新增字段手动修复脚本，添加用户API Key和积分字段 - 强制迁移脚本支持清理连接和修复表结构，初始化默认数据及角色分配 feat(config): 新增系统配置参数 - 配置数据库、Redis、Session和MinIO相关参数 - 添加AI接口地址及试用Key配置 - 集成阿里云短信服务配置及开发模式相关参数 feat(extensions): 初始化数据库、Redis和MinIO客户端 - 创建全局SQLAlchemy数据库实例和Redis客户端 - 配置基于boto3的MinIO兼容S3客户端 chore(logs): 添加示例系统日志文件 - 记录用户请求、验证码发送成功与失败的日志信息
479 lines
16 KiB
Python
479 lines
16 KiB
Python
# ext/horizontal_shard.py
|
|
# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
|
|
# <see AUTHORS file>
|
|
#
|
|
# This module is part of SQLAlchemy and is released under
|
|
# the MIT License: https://www.opensource.org/licenses/mit-license.php
|
|
|
|
"""Horizontal sharding support.
|
|
|
|
Defines a rudimental 'horizontal sharding' system which allows a Session to
|
|
distribute queries and persistence operations across multiple databases.
|
|
|
|
For a usage example, see the :ref:`examples_sharding` example included in
|
|
the source distribution.
|
|
|
|
.. deepalchemy:: The horizontal sharding extension is an advanced feature,
|
|
involving a complex statement -> database interaction as well as
|
|
use of semi-public APIs for non-trivial cases. Simpler approaches to
|
|
refering to multiple database "shards", most commonly using a distinct
|
|
:class:`_orm.Session` per "shard", should always be considered first
|
|
before using this more complex and less-production-tested system.
|
|
|
|
|
|
|
|
"""
|
|
from __future__ import annotations
|
|
|
|
from typing import Any
|
|
from typing import Callable
|
|
from typing import Dict
|
|
from typing import Iterable
|
|
from typing import Optional
|
|
from typing import Tuple
|
|
from typing import Type
|
|
from typing import TYPE_CHECKING
|
|
from typing import TypeVar
|
|
from typing import Union
|
|
|
|
from .. import event
|
|
from .. import exc
|
|
from .. import inspect
|
|
from .. import util
|
|
from ..orm import PassiveFlag
|
|
from ..orm._typing import OrmExecuteOptionsParameter
|
|
from ..orm.interfaces import ORMOption
|
|
from ..orm.mapper import Mapper
|
|
from ..orm.query import Query
|
|
from ..orm.session import _BindArguments
|
|
from ..orm.session import _PKIdentityArgument
|
|
from ..orm.session import Session
|
|
from ..util.typing import Protocol
|
|
from ..util.typing import Self
|
|
|
|
if TYPE_CHECKING:
|
|
from ..engine.base import Connection
|
|
from ..engine.base import Engine
|
|
from ..engine.base import OptionEngine
|
|
from ..engine.result import IteratorResult
|
|
from ..engine.result import Result
|
|
from ..orm import LoaderCallableStatus
|
|
from ..orm._typing import _O
|
|
from ..orm.bulk_persistence import BulkUDCompileState
|
|
from ..orm.context import QueryContext
|
|
from ..orm.session import _EntityBindKey
|
|
from ..orm.session import _SessionBind
|
|
from ..orm.session import ORMExecuteState
|
|
from ..orm.state import InstanceState
|
|
from ..sql import Executable
|
|
from ..sql._typing import _TP
|
|
from ..sql.elements import ClauseElement
|
|
|
|
__all__ = ["ShardedSession", "ShardedQuery"]
|
|
|
|
_T = TypeVar("_T", bound=Any)
|
|
|
|
|
|
ShardIdentifier = str
|
|
|
|
|
|
class ShardChooser(Protocol):
|
|
def __call__(
|
|
self,
|
|
mapper: Optional[Mapper[_T]],
|
|
instance: Any,
|
|
clause: Optional[ClauseElement],
|
|
) -> Any: ...
|
|
|
|
|
|
class IdentityChooser(Protocol):
|
|
def __call__(
|
|
self,
|
|
mapper: Mapper[_T],
|
|
primary_key: _PKIdentityArgument,
|
|
*,
|
|
lazy_loaded_from: Optional[InstanceState[Any]],
|
|
execution_options: OrmExecuteOptionsParameter,
|
|
bind_arguments: _BindArguments,
|
|
**kw: Any,
|
|
) -> Any: ...
|
|
|
|
|
|
class ShardedQuery(Query[_T]):
|
|
"""Query class used with :class:`.ShardedSession`.
|
|
|
|
.. legacy:: The :class:`.ShardedQuery` is a subclass of the legacy
|
|
:class:`.Query` class. The :class:`.ShardedSession` now supports
|
|
2.0 style execution via the :meth:`.ShardedSession.execute` method.
|
|
|
|
"""
|
|
|
|
def __init__(self, *args: Any, **kwargs: Any) -> None:
|
|
super().__init__(*args, **kwargs)
|
|
assert isinstance(self.session, ShardedSession)
|
|
|
|
self.identity_chooser = self.session.identity_chooser
|
|
self.execute_chooser = self.session.execute_chooser
|
|
self._shard_id = None
|
|
|
|
def set_shard(self, shard_id: ShardIdentifier) -> Self:
|
|
"""Return a new query, limited to a single shard ID.
|
|
|
|
All subsequent operations with the returned query will
|
|
be against the single shard regardless of other state.
|
|
|
|
The shard_id can be passed for a 2.0 style execution to the
|
|
bind_arguments dictionary of :meth:`.Session.execute`::
|
|
|
|
results = session.execute(stmt, bind_arguments={"shard_id": "my_shard"})
|
|
|
|
""" # noqa: E501
|
|
return self.execution_options(_sa_shard_id=shard_id)
|
|
|
|
|
|
class ShardedSession(Session):
|
|
shard_chooser: ShardChooser
|
|
identity_chooser: IdentityChooser
|
|
execute_chooser: Callable[[ORMExecuteState], Iterable[Any]]
|
|
|
|
def __init__(
|
|
self,
|
|
shard_chooser: ShardChooser,
|
|
identity_chooser: Optional[IdentityChooser] = None,
|
|
execute_chooser: Optional[
|
|
Callable[[ORMExecuteState], Iterable[Any]]
|
|
] = None,
|
|
shards: Optional[Dict[str, Any]] = None,
|
|
query_cls: Type[Query[_T]] = ShardedQuery,
|
|
*,
|
|
id_chooser: Optional[
|
|
Callable[[Query[_T], Iterable[_T]], Iterable[Any]]
|
|
] = None,
|
|
query_chooser: Optional[Callable[[Executable], Iterable[Any]]] = None,
|
|
**kwargs: Any,
|
|
) -> None:
|
|
"""Construct a ShardedSession.
|
|
|
|
:param shard_chooser: A callable which, passed a Mapper, a mapped
|
|
instance, and possibly a SQL clause, returns a shard ID. This id
|
|
may be based off of the attributes present within the object, or on
|
|
some round-robin scheme. If the scheme is based on a selection, it
|
|
should set whatever state on the instance to mark it in the future as
|
|
participating in that shard.
|
|
|
|
:param identity_chooser: A callable, passed a Mapper and primary key
|
|
argument, which should return a list of shard ids where this
|
|
primary key might reside.
|
|
|
|
.. versionchanged:: 2.0 The ``identity_chooser`` parameter
|
|
supersedes the ``id_chooser`` parameter.
|
|
|
|
:param execute_chooser: For a given :class:`.ORMExecuteState`,
|
|
returns the list of shard_ids
|
|
where the query should be issued. Results from all shards returned
|
|
will be combined together into a single listing.
|
|
|
|
.. versionchanged:: 1.4 The ``execute_chooser`` parameter
|
|
supersedes the ``query_chooser`` parameter.
|
|
|
|
:param shards: A dictionary of string shard names
|
|
to :class:`~sqlalchemy.engine.Engine` objects.
|
|
|
|
"""
|
|
super().__init__(query_cls=query_cls, **kwargs)
|
|
|
|
event.listen(
|
|
self, "do_orm_execute", execute_and_instances, retval=True
|
|
)
|
|
self.shard_chooser = shard_chooser
|
|
|
|
if id_chooser:
|
|
_id_chooser = id_chooser
|
|
util.warn_deprecated(
|
|
"The ``id_chooser`` parameter is deprecated; "
|
|
"please use ``identity_chooser``.",
|
|
"2.0",
|
|
)
|
|
|
|
def _legacy_identity_chooser(
|
|
mapper: Mapper[_T],
|
|
primary_key: _PKIdentityArgument,
|
|
*,
|
|
lazy_loaded_from: Optional[InstanceState[Any]],
|
|
execution_options: OrmExecuteOptionsParameter,
|
|
bind_arguments: _BindArguments,
|
|
**kw: Any,
|
|
) -> Any:
|
|
q = self.query(mapper)
|
|
if lazy_loaded_from:
|
|
q = q._set_lazyload_from(lazy_loaded_from)
|
|
return _id_chooser(q, primary_key)
|
|
|
|
self.identity_chooser = _legacy_identity_chooser
|
|
elif identity_chooser:
|
|
self.identity_chooser = identity_chooser
|
|
else:
|
|
raise exc.ArgumentError(
|
|
"identity_chooser or id_chooser is required"
|
|
)
|
|
|
|
if query_chooser:
|
|
_query_chooser = query_chooser
|
|
util.warn_deprecated(
|
|
"The ``query_chooser`` parameter is deprecated; "
|
|
"please use ``execute_chooser``.",
|
|
"1.4",
|
|
)
|
|
if execute_chooser:
|
|
raise exc.ArgumentError(
|
|
"Can't pass query_chooser and execute_chooser "
|
|
"at the same time."
|
|
)
|
|
|
|
def _default_execute_chooser(
|
|
orm_context: ORMExecuteState,
|
|
) -> Iterable[Any]:
|
|
return _query_chooser(orm_context.statement)
|
|
|
|
if execute_chooser is None:
|
|
execute_chooser = _default_execute_chooser
|
|
|
|
if execute_chooser is None:
|
|
raise exc.ArgumentError(
|
|
"execute_chooser or query_chooser is required"
|
|
)
|
|
self.execute_chooser = execute_chooser
|
|
self.__shards: Dict[ShardIdentifier, _SessionBind] = {}
|
|
if shards is not None:
|
|
for k in shards:
|
|
self.bind_shard(k, shards[k])
|
|
|
|
def _identity_lookup(
|
|
self,
|
|
mapper: Mapper[_O],
|
|
primary_key_identity: Union[Any, Tuple[Any, ...]],
|
|
identity_token: Optional[Any] = None,
|
|
passive: PassiveFlag = PassiveFlag.PASSIVE_OFF,
|
|
lazy_loaded_from: Optional[InstanceState[Any]] = None,
|
|
execution_options: OrmExecuteOptionsParameter = util.EMPTY_DICT,
|
|
bind_arguments: Optional[_BindArguments] = None,
|
|
**kw: Any,
|
|
) -> Union[Optional[_O], LoaderCallableStatus]:
|
|
"""override the default :meth:`.Session._identity_lookup` method so
|
|
that we search for a given non-token primary key identity across all
|
|
possible identity tokens (e.g. shard ids).
|
|
|
|
.. versionchanged:: 1.4 Moved :meth:`.Session._identity_lookup` from
|
|
the :class:`_query.Query` object to the :class:`.Session`.
|
|
|
|
"""
|
|
|
|
if identity_token is not None:
|
|
obj = super()._identity_lookup(
|
|
mapper,
|
|
primary_key_identity,
|
|
identity_token=identity_token,
|
|
**kw,
|
|
)
|
|
|
|
return obj
|
|
else:
|
|
for shard_id in self.identity_chooser(
|
|
mapper,
|
|
primary_key_identity,
|
|
lazy_loaded_from=lazy_loaded_from,
|
|
execution_options=execution_options,
|
|
bind_arguments=dict(bind_arguments) if bind_arguments else {},
|
|
):
|
|
obj2 = super()._identity_lookup(
|
|
mapper,
|
|
primary_key_identity,
|
|
identity_token=shard_id,
|
|
lazy_loaded_from=lazy_loaded_from,
|
|
**kw,
|
|
)
|
|
if obj2 is not None:
|
|
return obj2
|
|
|
|
return None
|
|
|
|
def _choose_shard_and_assign(
|
|
self,
|
|
mapper: Optional[_EntityBindKey[_O]],
|
|
instance: Any,
|
|
**kw: Any,
|
|
) -> Any:
|
|
if instance is not None:
|
|
state = inspect(instance)
|
|
if state.key:
|
|
token = state.key[2]
|
|
assert token is not None
|
|
return token
|
|
elif state.identity_token:
|
|
return state.identity_token
|
|
|
|
assert isinstance(mapper, Mapper)
|
|
shard_id = self.shard_chooser(mapper, instance, **kw)
|
|
if instance is not None:
|
|
state.identity_token = shard_id
|
|
return shard_id
|
|
|
|
def connection_callable(
|
|
self,
|
|
mapper: Optional[Mapper[_T]] = None,
|
|
instance: Optional[Any] = None,
|
|
shard_id: Optional[ShardIdentifier] = None,
|
|
**kw: Any,
|
|
) -> Connection:
|
|
"""Provide a :class:`_engine.Connection` to use in the unit of work
|
|
flush process.
|
|
|
|
"""
|
|
|
|
if shard_id is None:
|
|
shard_id = self._choose_shard_and_assign(mapper, instance)
|
|
|
|
if self.in_transaction():
|
|
trans = self.get_transaction()
|
|
assert trans is not None
|
|
return trans.connection(mapper, shard_id=shard_id)
|
|
else:
|
|
bind = self.get_bind(
|
|
mapper=mapper, shard_id=shard_id, instance=instance
|
|
)
|
|
|
|
if isinstance(bind, Engine):
|
|
return bind.connect(**kw)
|
|
else:
|
|
assert isinstance(bind, Connection)
|
|
return bind
|
|
|
|
def get_bind(
|
|
self,
|
|
mapper: Optional[_EntityBindKey[_O]] = None,
|
|
*,
|
|
shard_id: Optional[ShardIdentifier] = None,
|
|
instance: Optional[Any] = None,
|
|
clause: Optional[ClauseElement] = None,
|
|
**kw: Any,
|
|
) -> _SessionBind:
|
|
if shard_id is None:
|
|
shard_id = self._choose_shard_and_assign(
|
|
mapper, instance=instance, clause=clause
|
|
)
|
|
assert shard_id is not None
|
|
return self.__shards[shard_id]
|
|
|
|
def bind_shard(
|
|
self, shard_id: ShardIdentifier, bind: Union[Engine, OptionEngine]
|
|
) -> None:
|
|
self.__shards[shard_id] = bind
|
|
|
|
|
|
class set_shard_id(ORMOption):
|
|
"""a loader option for statements to apply a specific shard id to the
|
|
primary query as well as for additional relationship and column
|
|
loaders.
|
|
|
|
The :class:`_horizontal.set_shard_id` option may be applied using
|
|
the :meth:`_sql.Executable.options` method of any executable statement::
|
|
|
|
stmt = (
|
|
select(MyObject)
|
|
.where(MyObject.name == "some name")
|
|
.options(set_shard_id("shard1"))
|
|
)
|
|
|
|
Above, the statement when invoked will limit to the "shard1" shard
|
|
identifier for the primary query as well as for all relationship and
|
|
column loading strategies, including eager loaders such as
|
|
:func:`_orm.selectinload`, deferred column loaders like :func:`_orm.defer`,
|
|
and the lazy relationship loader :func:`_orm.lazyload`.
|
|
|
|
In this way, the :class:`_horizontal.set_shard_id` option has much wider
|
|
scope than using the "shard_id" argument within the
|
|
:paramref:`_orm.Session.execute.bind_arguments` dictionary.
|
|
|
|
|
|
.. versionadded:: 2.0.0
|
|
|
|
"""
|
|
|
|
__slots__ = ("shard_id", "propagate_to_loaders")
|
|
|
|
def __init__(
|
|
self, shard_id: ShardIdentifier, propagate_to_loaders: bool = True
|
|
):
|
|
"""Construct a :class:`_horizontal.set_shard_id` option.
|
|
|
|
:param shard_id: shard identifier
|
|
:param propagate_to_loaders: if left at its default of ``True``, the
|
|
shard option will take place for lazy loaders such as
|
|
:func:`_orm.lazyload` and :func:`_orm.defer`; if False, the option
|
|
will not be propagated to loaded objects. Note that :func:`_orm.defer`
|
|
always limits to the shard_id of the parent row in any case, so the
|
|
parameter only has a net effect on the behavior of the
|
|
:func:`_orm.lazyload` strategy.
|
|
|
|
"""
|
|
self.shard_id = shard_id
|
|
self.propagate_to_loaders = propagate_to_loaders
|
|
|
|
|
|
def execute_and_instances(
|
|
orm_context: ORMExecuteState,
|
|
) -> Union[Result[_T], IteratorResult[_TP]]:
|
|
active_options: Union[
|
|
None,
|
|
QueryContext.default_load_options,
|
|
Type[QueryContext.default_load_options],
|
|
BulkUDCompileState.default_update_options,
|
|
Type[BulkUDCompileState.default_update_options],
|
|
]
|
|
|
|
if orm_context.is_select:
|
|
active_options = orm_context.load_options
|
|
|
|
elif orm_context.is_update or orm_context.is_delete:
|
|
active_options = orm_context.update_delete_options
|
|
else:
|
|
active_options = None
|
|
|
|
session = orm_context.session
|
|
assert isinstance(session, ShardedSession)
|
|
|
|
def iter_for_shard(
|
|
shard_id: ShardIdentifier,
|
|
) -> Union[Result[_T], IteratorResult[_TP]]:
|
|
bind_arguments = dict(orm_context.bind_arguments)
|
|
bind_arguments["shard_id"] = shard_id
|
|
|
|
orm_context.update_execution_options(identity_token=shard_id)
|
|
return orm_context.invoke_statement(bind_arguments=bind_arguments)
|
|
|
|
for orm_opt in orm_context._non_compile_orm_options:
|
|
# TODO: if we had an ORMOption that gets applied at ORM statement
|
|
# execution time, that would allow this to be more generalized.
|
|
# for now just iterate and look for our options
|
|
if isinstance(orm_opt, set_shard_id):
|
|
shard_id = orm_opt.shard_id
|
|
break
|
|
else:
|
|
if active_options and active_options._identity_token is not None:
|
|
shard_id = active_options._identity_token
|
|
elif "_sa_shard_id" in orm_context.execution_options:
|
|
shard_id = orm_context.execution_options["_sa_shard_id"]
|
|
elif "shard_id" in orm_context.bind_arguments:
|
|
shard_id = orm_context.bind_arguments["shard_id"]
|
|
else:
|
|
shard_id = None
|
|
|
|
if shard_id is not None:
|
|
return iter_for_shard(shard_id)
|
|
else:
|
|
partial = []
|
|
for shard_id in session.execute_chooser(orm_context):
|
|
result_ = iter_for_shard(shard_id)
|
|
partial.append(result_)
|
|
return partial[0].merge(*partial[1:])
|