mirror of
https://github.com/LiteyukiStudio/LiteyukiBot.git
synced 2024-11-11 05:17:24 +08:00
328 lines
11 KiB
Python
328 lines
11 KiB
Python
# -*- coding: utf-8 -*-
|
||
"""
|
||
Copyright (C) 2020-2024 LiteyukiStudio. All Rights Reserved
|
||
|
||
@Time : 2024/7/26 下午11:21
|
||
@Author : snowykami
|
||
@Email : snowykami@outlook.com
|
||
@File : channel_.py
|
||
@Software: PyCharm
|
||
|
||
本模块定义了一个通用的通道类，用于进程间通信
|
||
"""
|
||
import asyncio
|
||
from multiprocessing import Pipe
|
||
from typing import Any, Callable, Coroutine, Generic, Optional, TypeAlias, TypeVar, get_args
|
||
|
||
from liteyuki.log import logger
|
||
from liteyuki.utils import IS_MAIN_PROCESS, is_coroutine_callable
|
||
|
||
T = TypeVar("T")
|
||
|
||
SYNC_ON_RECEIVE_FUNC: TypeAlias = Callable[[T], Any]
|
||
ASYNC_ON_RECEIVE_FUNC: TypeAlias = Callable[[T], Coroutine[Any, Any, Any]]
|
||
ON_RECEIVE_FUNC: TypeAlias = SYNC_ON_RECEIVE_FUNC | ASYNC_ON_RECEIVE_FUNC
|
||
|
||
SYNC_FILTER_FUNC: TypeAlias = Callable[[T], bool]
|
||
ASYNC_FILTER_FUNC: TypeAlias = Callable[[T], Coroutine[Any, Any, bool]]
|
||
FILTER_FUNC: TypeAlias = SYNC_FILTER_FUNC | ASYNC_FILTER_FUNC
|
||
|
||
_func_id: int = 0
|
||
_channel: dict[str, "Channel"] = {}
|
||
_callback_funcs: dict[int, ON_RECEIVE_FUNC] = {}
|
||
|
||
|
||
class Channel(Generic[T]):
|
||
"""
|
||
通道类，可以在进程间和进程内通信，双向但同时只能有一个发送者和一个接收者
|
||
有两种接收工作方式，但是只能选择一种，主动接收和被动接收，主动接收使用 `receive` 方法，被动接收使用 `on_receive` 装饰器
|
||
"""
|
||
|
||
def __init__(self, name: str, type_check: Optional[bool] = None):
|
||
"""
|
||
初始化通道
|
||
Args:
|
||
name: 通道ID
|
||
type_check: 是否开启类型检查, 若为空，则传入泛型默认开启，否则默认关闭
|
||
"""
|
||
|
||
self.conn_send, self.conn_recv = Pipe()
|
||
self._conn_send_inner, self._conn_recv_inner = Pipe() # 内部通道，用于子进程通信
|
||
self._closed = False
|
||
self._on_main_receive_func_ids: list[int] = []
|
||
self._on_sub_receive_func_ids: list[int] = []
|
||
self.name: str = name
|
||
|
||
self.is_receive_loop_running = False
|
||
|
||
if type_check is None:
|
||
# 若传入泛型则默认开启类型检查
|
||
type_check = self._get_generic_type() is not None
|
||
|
||
elif type_check:
|
||
if self._get_generic_type() is None:
|
||
raise TypeError("Type hint is required for enforcing type check.")
|
||
self.type_check = type_check
|
||
if name in _channel:
|
||
raise ValueError(f"Channel {name} already exists")
|
||
|
||
if IS_MAIN_PROCESS:
|
||
if name in _channel:
|
||
raise ValueError(f"Channel {name} already exists")
|
||
_channel[name] = self
|
||
logger.debug(f"Channel {name} initialized in main process")
|
||
else:
|
||
logger.debug(f"Channel {name} initialized in sub process, should manually set in main process")
|
||
|
||
def _get_generic_type(self) -> Optional[type]:
|
||
"""
|
||
获取通道传递泛型类型
|
||
|
||
Returns:
|
||
Optional[type]: 泛型类型
|
||
"""
|
||
if hasattr(self, '__orig_class__'):
|
||
return get_args(self.__orig_class__)[0]
|
||
return None
|
||
|
||
def _validate_structure(self, data: Any, structure: type) -> bool:
|
||
"""
|
||
验证数据结构
|
||
Args:
|
||
data: 数据
|
||
structure: 结构
|
||
|
||
Returns:
|
||
bool: 是否通过验证
|
||
"""
|
||
if isinstance(structure, type):
|
||
return isinstance(data, structure)
|
||
elif isinstance(structure, tuple):
|
||
if not isinstance(data, tuple) or len(data) != len(structure):
|
||
return False
|
||
return all(self._validate_structure(d, s) for d, s in zip(data, structure))
|
||
elif isinstance(structure, list):
|
||
if not isinstance(data, list):
|
||
return False
|
||
return all(self._validate_structure(d, structure[0]) for d in data)
|
||
elif isinstance(structure, dict):
|
||
if not isinstance(data, dict):
|
||
return False
|
||
return all(k in data and self._validate_structure(data[k], structure[k]) for k in structure)
|
||
return False
|
||
|
||
def __str__(self):
|
||
return f"Channel({self.name})"
|
||
|
||
def send(self, data: T):
|
||
"""
|
||
发送数据，发送函数为同步函数，没有异步的必要
|
||
Args:
|
||
data: 数据
|
||
"""
|
||
if self.type_check:
|
||
_type = self._get_generic_type()
|
||
if _type is not None and not self._validate_structure(data, _type):
|
||
raise TypeError(f"Data must be an instance of {_type}, {type(data)} found")
|
||
|
||
if self._closed:
|
||
raise RuntimeError("Cannot send to a closed channel_")
|
||
self.conn_send.send(data)
|
||
|
||
def receive(self) -> T:
|
||
"""
|
||
同步接收数据，会阻塞线程
|
||
Args:
|
||
"""
|
||
if self._closed:
|
||
raise RuntimeError("Cannot receive from a closed channel_")
|
||
|
||
while True:
|
||
data = self.conn_recv.recv()
|
||
return data
|
||
|
||
async def async_receive(self) -> T:
|
||
"""
|
||
异步接收数据，会挂起等待
|
||
"""
|
||
print("等待接收数据")
|
||
loop = asyncio.get_running_loop()
|
||
data = await loop.run_in_executor(None, self.receive)
|
||
print("接收到数据")
|
||
return data
|
||
|
||
def on_receive(self, filter_func: Optional[FILTER_FUNC] = None) -> Callable[[Callable[[T], Any]], Callable[[T], Any]]:
|
||
"""
|
||
接收数据并执行函数
|
||
Args:
|
||
filter_func: 过滤函数，为None则不过滤
|
||
Returns:
|
||
装饰器，装饰一个函数在接收到数据后执行
|
||
"""
|
||
if not IS_MAIN_PROCESS:
|
||
raise RuntimeError("on_receive can only be used in main process")
|
||
|
||
def decorator(func: Callable[[T], Any]) -> Callable[[T], Any]:
|
||
global _func_id
|
||
|
||
async def wrapper(data: T) -> Any:
|
||
if filter_func is not None:
|
||
if is_coroutine_callable(filter_func):
|
||
if not (await filter_func(data)): # type: ignore
|
||
return
|
||
else:
|
||
if not filter_func(data):
|
||
return
|
||
|
||
if is_coroutine_callable(func):
|
||
return await func(data)
|
||
else:
|
||
return func(data)
|
||
|
||
_callback_funcs[_func_id] = wrapper
|
||
if IS_MAIN_PROCESS:
|
||
self._on_main_receive_func_ids.append(_func_id)
|
||
else:
|
||
self._on_sub_receive_func_ids.append(_func_id)
|
||
_func_id += 1
|
||
return func
|
||
|
||
return decorator
|
||
|
||
async def _run_on_receive_funcs(self, data: Any):
|
||
"""
|
||
运行接收函数
|
||
Args:
|
||
data: 数据
|
||
"""
|
||
if IS_MAIN_PROCESS:
|
||
[asyncio.create_task(_callback_funcs[func_id](data)) for func_id in self._on_main_receive_func_ids]
|
||
else:
|
||
[asyncio.create_task(_callback_funcs[func_id](data)) for func_id in self._on_sub_receive_func_ids]
|
||
|
||
async def start_receive_loop(self):
|
||
"""
|
||
开始接收数据
|
||
会自动判断主进程和子进程，需要在对应进程都调度一次
|
||
"""
|
||
if len(self._on_main_receive_func_ids) == 0:
|
||
logger.warning(f"No on_receive function registered for {self.name}")
|
||
return
|
||
|
||
self.is_receive_loop_running = True
|
||
logger.debug(f"Starting receive loop for {self.name}")
|
||
while not self._closed:
|
||
data = await self.async_receive()
|
||
await self._run_on_receive_funcs(data)
|
||
|
||
|
||
"""子进程可用的主动和被动通道"""
|
||
active_channel: Channel = Channel(name="active_channel")
|
||
passive_channel: Channel = Channel(name="passive_channel")
|
||
publish_channel: Channel[tuple[str, dict[str, Any]]] = Channel(name="publish_channel")
|
||
"""通道传递通道，主进程创建单例，子进程初始化时实例化"""
|
||
channel_deliver_active_channel: Channel[Channel[Any]]
|
||
channel_deliver_passive_channel: Channel[tuple[str, dict[str, Any]]]
|
||
|
||
if IS_MAIN_PROCESS:
|
||
channel_deliver_active_channel = Channel(name="channel_deliver_active_channel")
|
||
channel_deliver_passive_channel = Channel(name="channel_deliver_passive_channel")
|
||
|
||
|
||
@channel_deliver_passive_channel.on_receive(filter_func=lambda data: data[0] == "set_channel")
|
||
def on_set_channel(data: tuple[str, dict[str, Any]]):
|
||
name, channel = data[1]["name"], data[1]["channel_"]
|
||
set_channel(name, channel)
|
||
|
||
|
||
@channel_deliver_passive_channel.on_receive(filter_func=lambda data: data[0] == "get_channel")
|
||
def on_get_channel(data: tuple[str, dict[str, Any]]):
|
||
name, recv_chan = data[1]["name"], data[1]["recv_chan"]
|
||
recv_chan.send(get_channel(name))
|
||
|
||
|
||
@channel_deliver_passive_channel.on_receive(filter_func=lambda data: data[0] == "get_channels")
|
||
def on_get_channels(data: tuple[str, dict[str, Any]]):
|
||
recv_chan = data[1]["recv_chan"]
|
||
recv_chan.send(get_channels())
|
||
|
||
|
||
def set_channel(name: str, channel: "Channel"):
|
||
"""
|
||
设置通道实例
|
||
Args:
|
||
name: 通道名称
|
||
channel: 通道实例
|
||
"""
|
||
if not isinstance(channel, Channel):
|
||
raise TypeError(f"channel_ must be an instance of Channel, {type(channel)} found")
|
||
|
||
if IS_MAIN_PROCESS:
|
||
if name in _channel:
|
||
raise ValueError(f"Channel {name} already exists")
|
||
_channel[name] = channel
|
||
else:
|
||
# 请求主进程设置通道
|
||
channel_deliver_passive_channel.send(
|
||
(
|
||
"set_channel", {
|
||
"name" : name,
|
||
"channel_": channel,
|
||
}
|
||
)
|
||
)
|
||
|
||
|
||
def set_channels(channels: dict[str, "Channel"]):
|
||
"""
|
||
设置通道实例
|
||
Args:
|
||
channels: 通道名称
|
||
"""
|
||
for name, channel in channels.items():
|
||
set_channel(name, channel)
|
||
|
||
|
||
def get_channel(name: str) -> "Channel":
|
||
"""
|
||
获取通道实例
|
||
Args:
|
||
name: 通道名称
|
||
Returns:
|
||
"""
|
||
if IS_MAIN_PROCESS:
|
||
return _channel[name]
|
||
|
||
else:
|
||
recv_chan = Channel[Channel[Any]]("recv_chan")
|
||
channel_deliver_passive_channel.send(
|
||
(
|
||
"get_channel",
|
||
{
|
||
"name" : name,
|
||
"recv_chan": recv_chan
|
||
}
|
||
)
|
||
)
|
||
return recv_chan.receive()
|
||
|
||
|
||
def get_channels() -> dict[str, "Channel"]:
|
||
"""
|
||
获取通道实例
|
||
Returns:
|
||
"""
|
||
if IS_MAIN_PROCESS:
|
||
return _channel
|
||
else:
|
||
recv_chan = Channel[dict[str, Channel[Any]]]("recv_chan")
|
||
channel_deliver_passive_channel.send(
|
||
(
|
||
"get_channels",
|
||
{
|
||
"recv_chan": recv_chan
|
||
}
|
||
)
|
||
)
|
||
return recv_chan.receive()
|