mirror of
https://github.com/dptech-corp/Uni-Lab-OS.git
synced 2026-02-07 07:25:15 +00:00
Add topic config
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@@ -1,3 +1,9 @@
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from functools import wraps
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from typing import Any, Callable, Optional, TypeVar
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F = TypeVar("F", bound=Callable[..., Any])
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def singleton(cls):
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"""
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单例装饰器
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@@ -12,3 +18,167 @@ def singleton(cls):
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return get_instance
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def topic_config(
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period: Optional[float] = None,
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print_publish: Optional[bool] = None,
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qos: Optional[int] = None,
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) -> Callable[[F], F]:
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"""
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Topic发布配置装饰器
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用于装饰 get_{attr_name} 方法或 @property,控制对应属性的ROS topic发布行为。
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Args:
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period: 发布周期(秒)。None 表示使用默认值 5.0
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print_publish: 是否打印发布日志。None 表示使用节点默认配置
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qos: QoS深度配置。None 表示使用默认值 10
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Example:
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class MyDriver:
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# 方式1: 装饰 get_{attr_name} 方法
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@topic_config(period=1.0, print_publish=False, qos=5)
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def get_temperature(self):
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return self._temperature
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# 方式2: 与 @property 连用(topic_config 放在下面)
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@property
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@topic_config(period=0.1)
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def position(self):
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return self._position
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Note:
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与 @property 连用时,@topic_config 必须放在 @property 下面,
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这样装饰器执行顺序为:先 topic_config 添加配置,再 property 包装。
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"""
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def decorator(func: F) -> F:
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@wraps(func)
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def wrapper(*args, **kwargs):
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return func(*args, **kwargs)
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# 在函数上附加配置属性 (type: ignore 用于动态属性)
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wrapper._topic_period = period # type: ignore[attr-defined]
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wrapper._topic_print_publish = print_publish # type: ignore[attr-defined]
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wrapper._topic_qos = qos # type: ignore[attr-defined]
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wrapper._has_topic_config = True # type: ignore[attr-defined]
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return wrapper # type: ignore[return-value]
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return decorator
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def get_topic_config(func) -> dict:
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"""
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获取函数上的topic配置
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Args:
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func: 被装饰的函数
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Returns:
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包含 period, print_publish, qos 的配置字典
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"""
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if hasattr(func, "_has_topic_config") and getattr(func, "_has_topic_config", False):
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return {
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"period": getattr(func, "_topic_period", None),
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"print_publish": getattr(func, "_topic_print_publish", None),
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"qos": getattr(func, "_topic_qos", None),
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}
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return {}
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def subscribe(
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topic: str,
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msg_type: Optional[type] = None,
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qos: int = 10,
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) -> Callable[[F], F]:
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"""
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Topic订阅装饰器
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用于装饰 driver 类中的方法,使其成为 ROS topic 的订阅回调。
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当 ROS2DeviceNode 初始化时,会自动扫描并创建对应的订阅者。
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Args:
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topic: Topic 名称模板,支持以下占位符:
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- {device_id}: 设备ID (如 "pump_1")
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- {namespace}: 完整命名空间 (如 "/devices/pump_1")
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msg_type: ROS 消息类型。如果为 None,需要在回调函数的类型注解中指定
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qos: QoS 深度配置,默认为 10
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Example:
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from std_msgs.msg import String, Float64
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class MyDriver:
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@subscribe(topic="/devices/{device_id}/set_speed", msg_type=Float64)
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def on_speed_update(self, msg: Float64):
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self._speed = msg.data
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print(f"Speed updated to: {self._speed}")
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@subscribe(topic="{namespace}/command")
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def on_command(self, msg: String):
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# msg_type 可从类型注解推断
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self.execute_command(msg.data)
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Note:
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- 回调方法的第一个参数是 self,第二个参数是收到的 ROS 消息
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- topic 中的占位符会在创建订阅时被实际值替换
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"""
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def decorator(func: F) -> F:
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@wraps(func)
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def wrapper(*args, **kwargs):
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return func(*args, **kwargs)
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# 在函数上附加订阅配置
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wrapper._subscribe_topic = topic # type: ignore[attr-defined]
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wrapper._subscribe_msg_type = msg_type # type: ignore[attr-defined]
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wrapper._subscribe_qos = qos # type: ignore[attr-defined]
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wrapper._has_subscribe = True # type: ignore[attr-defined]
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return wrapper # type: ignore[return-value]
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return decorator
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def get_subscribe_config(func) -> dict:
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"""
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获取函数上的订阅配置
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Args:
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func: 被装饰的函数
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Returns:
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包含 topic, msg_type, qos 的配置字典
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"""
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if hasattr(func, "_has_subscribe") and getattr(func, "_has_subscribe", False):
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return {
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"topic": getattr(func, "_subscribe_topic", None),
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"msg_type": getattr(func, "_subscribe_msg_type", None),
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"qos": getattr(func, "_subscribe_qos", 10),
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}
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return {}
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def get_all_subscriptions(instance) -> list:
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"""
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扫描实例的所有方法,获取带有 @subscribe 装饰器的方法及其配置
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Args:
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instance: 要扫描的实例
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Returns:
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包含 (method_name, method, config) 元组的列表
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"""
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subscriptions = []
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for attr_name in dir(instance):
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if attr_name.startswith("_"):
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continue
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try:
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attr = getattr(instance, attr_name)
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if callable(attr):
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config = get_subscribe_config(attr)
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if config:
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subscriptions.append((attr_name, attr, config))
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except Exception:
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pass
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return subscriptions
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