ChannelDeliver__init__(self, active: Channel[Any], passive: Channel[Any], channel_deliver_active: Channel[Channel[Any]], channel_deliver_passive: Channel[tuple[str, dict]], publish: Channel[tuple[str, Any]])def __init__(self, active: Channel[Any], passive: Channel[Any], channel_deliver_active: Channel[Channel[Any]], channel_deliver_passive: Channel[tuple[str, dict]], publish: Channel[tuple[str, Any]]):
self.active = active
self.passive = passive
self.channel_deliver_active = channel_deliver_active
self.channel_deliver_passive = channel_deliver_passive
self.publish = publish
ProcessManager__init__(self, lifespan: Lifespan)def __init__(self, lifespan: 'Lifespan'):
self.lifespan = lifespan
self.targets: dict[str, tuple[Callable, tuple, dict]] = {}
self.processes: dict[str, Process] = {}
_run_process(self, name: str)说明: 开启后自动监控进程，并添加到进程字典中，会阻塞，请创建task
参数:
- name:
async def _run_process(self, name: str):
"""
开启后自动监控进程，并添加到进程字典中，会阻塞，请创建task
Args:
name:
Returns:
"""
if name not in self.targets:
raise KeyError(f'Process {name} not found.')
chan_active = get_channel(f'{name}-active')
def _start_process():
process = Process(target=self.targets[name][0], args=self.targets[name][1], kwargs=self.targets[name][2], daemon=True)
self.processes[name] = process
process.start()
_start_process()
while True:
data = await chan_active.async_receive()
if data == 0:
logger.info(f'Stopping process {name}')
await self.lifespan.before_process_shutdown()
self.terminate(name)
break
elif data == 1:
logger.info(f'Restarting process {name}')
await self.lifespan.before_process_shutdown()
await self.lifespan.before_process_restart()
self.terminate(name)
_start_process()
continue
else:
logger.warning('Unknown data received, ignored.')
start_all(self)说明: 对外启动方法，启动所有进程，创建asyncio task
async def start_all(self):
"""
对外启动方法，启动所有进程，创建asyncio task
"""
[asyncio.create_task(chan.start_receive_loop()) for chan in get_channels().values()]
[asyncio.create_task(sm.start_receive_loop()) for sm in [shared_memory]]
[asyncio.create_task(self._run_process(name)) for name in self.targets]
add_target(self, name: str, target: TARGET_FUNC, args: tuple = (), kwargs = None)说明: 添加进程
参数:
- name: 进程名，用于获取和唯一标识
- target: 进程函数
- args: 进程函数参数
- kwargs: 进程函数关键字参数，通常会默认传入chan_active和chan_passive
def add_target(self, name: str, target: TARGET_FUNC, args: tuple=(), kwargs=None):
"""
添加进程
Args:
name: 进程名，用于获取和唯一标识
target: 进程函数
args: 进程函数参数
kwargs: 进程函数关键字参数，通常会默认传入chan_active和chan_passive
"""
if kwargs is None:
kwargs = {}
chan_active: Channel = Channel(name=f'{name}-active')
chan_passive: Channel = Channel(name=f'{name}-passive')
channel_deliver = ChannelDeliver(active=chan_active, passive=chan_passive, channel_deliver_active=channel_deliver_active_channel, channel_deliver_passive=channel_deliver_passive_channel, publish=publish_channel)
self.targets[name] = (_delivery_channel_wrapper, (target, channel_deliver, shared_memory, *args), kwargs)
join_all(self)def join_all(self):
for (name, process) in self.targets:
process.join()
terminate(self, name: str)说明: 终止进程并从进程字典中删除
参数:
- name:
def terminate(self, name: str):
"""
终止进程并从进程字典中删除
Args:
name:
Returns:
"""
if name not in self.processes:
logger.warning(f'Process {name} not found.')
return
process = self.processes[name]
process.terminate()
process.join(TIMEOUT)
if process.is_alive():
process.kill()
logger.success(f'Process {name} terminated.')
terminate_all(self)def terminate_all(self):
for name in self.targets:
self.terminate(name)
is_process_alive(self, name: str) -> bool说明: 检查进程是否存活
参数:
- name:
def is_process_alive(self, name: str) -> bool:
"""
检查进程是否存活
Args:
name:
Returns:
"""
if name not in self.targets:
logger.warning(f'Process {name} not found.')
return self.processes[name].is_alive()
TARGET_FUNC = Callable[..., Any]TypeAlias