---
title: liteyuki.bot
---
### *func* `get_bot() -> LiteyukiBot`
**说明**: 获取轻雪实例
**返回**: LiteyukiBot: 当前的轻雪实例
源代码
```python
def get_bot() -> LiteyukiBot:
"""
获取轻雪实例
Returns:
LiteyukiBot: 当前的轻雪实例
"""
if IS_MAIN_PROCESS:
if _BOT_INSTANCE is None:
raise RuntimeError('Liteyuki instance not initialized.')
return _BOT_INSTANCE
else:
raise RuntimeError("Can't get bot instance in sub process.")
```
### *func* `get_config(key: str = None) -> Any`
**说明**: 获取配置
**参数**:
> - key: 配置键
> - default: 默认值
**返回**: Any: 配置值
源代码
```python
def get_config(key: str, default: Any=None) -> Any:
"""
获取配置
Args:
key: 配置键
default: 默认值
Returns:
Any: 配置值
"""
return get_bot().config.get(key, default)
```
### *func* `get_config_with_compat(key: str = None) -> Any`
**说明**: 获取配置，兼容旧版本
**参数**:
> - key: 配置键
> - compat_keys: 兼容键
> - default: 默认值
**返回**: Any: 配置值
源代码
```python
def get_config_with_compat(key: str, compat_keys: tuple[str], default: Any=None) -> Any:
"""
获取配置，兼容旧版本
Args:
key: 配置键
compat_keys: 兼容键
default: 默认值
Returns:
Any: 配置值
"""
if key in get_bot().config:
return get_bot().config[key]
for compat_key in compat_keys:
if compat_key in get_bot().config:
logger.warning(f'Config key "{compat_key}" will be deprecated, use "{key}" instead.')
return get_bot().config[compat_key]
return default
```
### *func* `print_logo()`
源代码
```python
def print_logo():
print('\x1b[34m' + '\n __ ______ ________ ________ __ __ __ __ __ __ ______ \n / | / |/ |/ |/ \\ / |/ | / |/ | / |/ |\n $$ | $$$$$$/ $$$$$$$$/ $$$$$$$$/ $$ \\ /$$/ $$ | $$ |$$ | /$$/ $$$$$$/ \n $$ | $$ | $$ | $$ |__ $$ \\/$$/ $$ | $$ |$$ |/$$/ $$ | \n $$ | $$ | $$ | $$ | $$ $$/ $$ | $$ |$$ $$< $$ | \n $$ | $$ | $$ | $$$$$/ $$$$/ $$ | $$ |$$$$$ \\ $$ | \n $$ |_____ _$$ |_ $$ | $$ |_____ $$ | $$ \\__$$ |$$ |$$ \\ _$$ |_ \n $$ |/ $$ | $$ | $$ | $$ | $$ $$/ $$ | $$ |/ $$ |\n $$$$$$$$/ $$$$$$/ $$/ $$$$$$$$/ $$/ $$$$$$/ $$/ $$/ $$$$$$/ \n ' + '\x1b[0m')
```
### **class** `LiteyukiBot`
### *method* `__init__(self) -> None`
**说明**: 初始化轻雪实例
**参数**:
> - *args:
> - **kwargs: 配置
源代码
```python
def __init__(self, *args, **kwargs) -> None:
"""
初始化轻雪实例
Args:
*args:
**kwargs: 配置
"""
'常规操作'
print_logo()
global _BOT_INSTANCE
_BOT_INSTANCE = self
'配置'
self.config: dict[str, Any] = kwargs
'初始化'
self.init(**self.config)
logger.info('Liteyuki is initializing...')
'生命周期管理'
self.lifespan = Lifespan()
self.process_manager: ProcessManager = ProcessManager(lifespan=self.lifespan)
'事件循环'
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop)
self.stop_event = threading.Event()
self.call_restart_count = 0
'加载插件加载器'
load_plugin('liteyuki.plugins.plugin_loader')
'信号处理'
signal.signal(signal.SIGINT, self._handle_exit)
signal.signal(signal.SIGTERM, self._handle_exit)
atexit.register(self.process_manager.terminate_all)
```
### *method* `run(self)`
**说明**: 启动逻辑
源代码
```python
def run(self):
"""
启动逻辑
"""
self.lifespan.before_start()
self.process_manager.start_all()
self.lifespan.after_start()
self.keep_alive()
```
### *method* `keep_alive(self)`
**说明**: 保持轻雪运行
源代码
```python
def keep_alive(self):
"""
保持轻雪运行
Returns:
"""
try:
while not self.stop_event.is_set():
time.sleep(0.5)
except KeyboardInterrupt:
logger.info('Liteyuki is stopping...')
self.stop()
```
### *method* `_handle_exit(self, signum, frame)`
**说明**: 信号处理
**参数**:
> - signum:
> - frame:
源代码
```python
def _handle_exit(self, signum, frame):
"""
信号处理
Args:
signum:
frame:
Returns:
"""
logger.info('Received signal, stopping all processes.')
self.stop()
sys.exit(0)
```
### *method* `restart(self, delay: int = 0)`
**说明**: 重启轻雪本体
源代码
```python
def restart(self, delay: int=0):
"""
重启轻雪本体
Returns:
"""
if self.call_restart_count < 1:
executable = sys.executable
args = sys.argv
logger.info('Restarting LiteyukiBot...')
time.sleep(delay)
if platform.system() == 'Windows':
cmd = 'start'
elif platform.system() == 'Linux':
cmd = 'nohup'
elif platform.system() == 'Darwin':
cmd = 'open'
else:
cmd = 'nohup'
self.process_manager.terminate_all()
threading.Thread(target=os.system, args=(f"{cmd} {executable} {' '.join(args)}",)).start()
sys.exit(0)
self.call_restart_count += 1
```
### *method* `restart_process(self, name: Optional[str] = None)`
**说明**: 停止轻雪
**参数**:
> - name: 进程名称, 默认为None, 所有进程
源代码
```python
def restart_process(self, name: Optional[str]=None):
"""
停止轻雪
Args:
name: 进程名称, 默认为None, 所有进程
Returns:
"""
self.lifespan.before_process_shutdown()
self.lifespan.before_process_shutdown()
if name is not None:
chan_active = get_channel(f'{name}-active')
chan_active.send(1)
else:
for process_name in self.process_manager.processes:
chan_active = get_channel(f'{process_name}-active')
chan_active.send(1)
```
### *method* `init(self)`
**说明**: 初始化轻雪, 自动调用
源代码
```python
def init(self, *args, **kwargs):
"""
初始化轻雪, 自动调用
Returns:
"""
self.init_logger()
```
### *method* `init_logger(self)`
源代码
```python
def init_logger(self):
init_log(config=self.config)
```
### *method* `stop(self)`
**说明**: 停止轻雪
源代码
```python
def stop(self):
"""
停止轻雪
Returns:
"""
self.stop_event.set()
self.loop.stop()
```
### *method* `on_before_start(self, func: LIFESPAN_FUNC)`
**说明**: 注册启动前的函数
**参数**:
> - func:
源代码
```python
def on_before_start(self, func: LIFESPAN_FUNC):
"""
注册启动前的函数
Args:
func:
Returns:
"""
return self.lifespan.on_before_start(func)
```
### *method* `on_after_start(self, func: LIFESPAN_FUNC)`
**说明**: 注册启动后的函数
**参数**:
> - func:
源代码
```python
def on_after_start(self, func: LIFESPAN_FUNC):
"""
注册启动后的函数
Args:
func:
Returns:
"""
return self.lifespan.on_after_start(func)
```
### *method* `on_after_shutdown(self, func: LIFESPAN_FUNC)`
**说明**: 注册停止后的函数：未实现
**参数**:
> - func:
源代码
```python
def on_after_shutdown(self, func: LIFESPAN_FUNC):
"""
注册停止后的函数：未实现
Args:
func:
Returns:
"""
return self.lifespan.on_after_shutdown(func)
```
### *method* `on_before_process_shutdown(self, func: LIFESPAN_FUNC)`
**说明**: 注册进程停止前的函数，为子进程停止时调用
**参数**:
> - func:
源代码
```python
def on_before_process_shutdown(self, func: LIFESPAN_FUNC):
"""
注册进程停止前的函数，为子进程停止时调用
Args:
func:
Returns:
"""
return self.lifespan.on_before_process_shutdown(func)
```
### *method* `on_before_process_restart(self, func: LIFESPAN_FUNC)`
**说明**: 注册进程重启前的函数，为子进程重启时调用
**参数**:
> - func:
源代码
```python
def on_before_process_restart(self, func: LIFESPAN_FUNC):
"""
注册进程重启前的函数，为子进程重启时调用
Args:
func:
Returns:
"""
return self.lifespan.on_before_process_restart(func)
```
### *method* `on_after_restart(self, func: LIFESPAN_FUNC)`
**说明**: 注册重启后的函数：未实现
**参数**:
> - func:
源代码
```python
def on_after_restart(self, func: LIFESPAN_FUNC):
"""
注册重启后的函数：未实现
Args:
func:
Returns:
"""
return self.lifespan.on_after_restart(func)
```
### *method* `on_after_nonebot_init(self, func: LIFESPAN_FUNC)`
**说明**: 注册nonebot初始化后的函数
**参数**:
> - func:
源代码
```python
def on_after_nonebot_init(self, func: LIFESPAN_FUNC):
"""
注册nonebot初始化后的函数
Args:
func:
Returns:
"""
return self.lifespan.on_after_nonebot_init(func)
```
### ***var*** `_BOT_INSTANCE = NO_DEFAULT`
- **类型**: `LiteyukiBot`