mirror of
http://git.xinwangdao.com/cnnc-embedded-parts-detect/detect-gui.git
synced 2025-06-24 21:14:12 +08:00
473 lines
21 KiB
Python
473 lines
21 KiB
Python
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import asyncio
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import importlib
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import inspect
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import json
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import os
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import pkgutil
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import re
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from typing import Type, Dict, Optional, Any, List
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from fastapi import FastAPI, Request
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from fastapi.staticfiles import StaticFiles
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from httpx import delete
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from starlette.responses import JSONResponse
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from uvicorn import Server, Config
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from core.edge_component import EdgeComponent, service
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from core.config import settings
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from core.edge_internal import Database, Scheduler
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from core.edge_logger import LoggingMixin
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import paho.mqtt.client as mqtt
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from core.edge_routes import setup_routes
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from core.edge_task import EdgeTask, EdgeTaskStep
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from core.edge_util import camel_to_snake
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MQTT_TELEMETRY_TOPIC = "v1/devices/me/telemetry"
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MQTT_RPC_TOPIC_PREFIX = "v1/devices/me/rpc/request"
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MQTT_RPC_TOPIC_RESP_PREFIX = "v1/devices/me/rpc/response"
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MQTT_RPC_TOPIC = f"{MQTT_RPC_TOPIC_PREFIX}/+"
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class EdgeContext(LoggingMixin):
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def __init__(self):
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super().__init__()
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# 初始化mqtt客户端
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self.client = mqtt.Client()
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self.client.on_connect = self.on_connect
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self.client.on_disconnect = self.on_disconnect
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self.client.on_message = self.on_message
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# 搜索边缘组件并实例化
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self.components: Dict[str, EdgeComponent] = self._load_components()
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self._init_internal_components()
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self._init_components()
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self.logger.info(f"当前边缘组件：{','.join(self.components.keys())}")
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# loop
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self.loop = None
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# tcp server
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self.tcp_server = None
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self.tcp_clients = set() # 保存客户端连接
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# rest
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rest_port = settings.get("rest.port", 8000)
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self.app = FastAPI()
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# 挂载静态文件目录
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local_dir = settings.get('rest.static', 'local')
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os.makedirs(local_dir, exist_ok=True)
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self.app.mount("/local", StaticFiles(directory=local_dir), name="local")
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self.config = Config(app=self.app, host="0.0.0.0", port=rest_port)
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self.server = Server(self.config)
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setup_routes(self, self.app)
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def _load_components(self) -> Dict[str, EdgeComponent]:
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package_name = 'components'
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components = {}
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# 动态导入 components 目录下的所有模块
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package = importlib.import_module(package_name)
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for _, module_name, _ in pkgutil.iter_modules(package.__path__, package_name + "."):
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module = importlib.import_module(module_name)
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# 查找模块中的所有 EdgeComponent 子类
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for name, cls in inspect.getmembers(module, inspect.isclass):
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if issubclass(cls, EdgeComponent) and cls is not EdgeComponent:
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# 确保是非抽象类且没有子类
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if not inspect.isabstract(cls) and not cls.__subclasses__() and hasattr(cls, 'component_name'):
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instance = cls(self)
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components[cls.component_name] = instance
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return components
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def _init_internal_components(self):
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database = Database(self)
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scheduler = Scheduler(self)
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database.configure(settings)
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scheduler.configure(settings)
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database.start()
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scheduler.start()
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self.components[database.__class__.component_name] = database
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self.components[scheduler.__class__.component_name] = scheduler
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def _init_components(self):
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for componentKey in self.components.keys():
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if componentKey in [Database.component_name, Scheduler.component_name]:
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continue
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component = self.components[componentKey]
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component.configure(settings)
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if component.__class__.component_auto_start:
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try:
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if not component.is_started:
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component.start()
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except Exception as e:
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self.logger.error(f"{componentKey}启动失败", e)
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def _get_non_abstract_subclasses(self, cls: Type[EdgeComponent]) -> Dict[str, EdgeComponent]:
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subclasses = set(cls.__subclasses__())
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non_abstract_subclasses = {}
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for subclass in subclasses:
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if not inspect.isabstract(subclass) and not subclass.__subclasses__() and hasattr(subclass, 'component_name'):
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instance = subclass()
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instance.configure(settings)
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if subclass.component_auto_start:
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instance.start()
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non_abstract_subclasses[subclass.component_name] = instance
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else:
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non_abstract_subclasses.update(self._get_non_abstract_subclasses(subclass))
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return non_abstract_subclasses
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async def execute(self, func_name, *args, **kwargs):
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func = getattr(self, func_name, None)
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if func is None:
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raise RuntimeError(f"Function {func_name} not found in {self.__class__.__name__}")
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if hasattr(func, '_component_service') and func._component_service:
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if callable(func):
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method_signature = inspect.signature(func)
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method_params = method_signature.parameters
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call_args = []
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for param_name, param_info in method_params.items():
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if param_name == 'self' or param_info.kind == 4:
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continue
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param_type = param_info.annotation
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if param_name in kwargs:
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# 尝试将参数值转换为指定类型
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try:
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if param_type is inspect.Parameter.empty or param_type is Any:
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# 如果参数类型未注明或为 Any 类型，则不进行强制类型转换
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call_args.append(kwargs[param_name])
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else:
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# 否则，尝试将参数值转换为指定类型
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call_args.append(param_type(kwargs[param_name]))
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except (TypeError, ValueError) as e:
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raise ValueError(f"Invalid value '{kwargs[param_name]}' for parameter '{param_name}': {e}")
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elif param_info.default is inspect.Parameter.empty:
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# 如果参数没有默认值且未在 kwargs 中指定，则抛出异常
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raise ValueError(f"Missing required parameter '{param_name}' for method '{func_name}'.")
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else:
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# 否则，使用参数的默认值
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call_args.append(param_info.default)
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func_kwargs = {key: value for key, value in kwargs.items() if
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key not in [param_name for param_name, _ in method_params.items()]}
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if inspect.iscoroutinefunction(func):
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return await func(*tuple(call_args), **func_kwargs)
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else:
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return await asyncio.to_thread(func, *tuple(call_args), **func_kwargs)
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else:
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raise RuntimeError(f"Function {func.__name__} not found in {self.__class__.__name__}")
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else:
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raise RuntimeError(f"Function {func.__name__} does not have the required annotation.")
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def get_component(self, name: str) -> EdgeComponent:
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component_instance = self.components.get(name)
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if component_instance:
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return component_instance
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else:
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raise ValueError(f"Component {name} not found")
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async def handle_message(self, client, userdata, message):
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self.logger.info(f"Receive: topic={message.topic} content={message.payload}")
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# 'v1/devices/me/rpc/request/0'
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topic = message.topic
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if topic.startswith(MQTT_RPC_TOPIC_PREFIX):
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rpc_id = topic.rsplit('/', 1)[-1]
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payload = json.loads(message.payload)
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response_topic = f"{MQTT_RPC_TOPIC_RESP_PREFIX}/{rpc_id}"
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requestId = payload["requestId"]
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response = {
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"requestId": requestId,
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"code": 0,
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"message": "success",
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}
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reqeust_type = payload["type"]
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if not reqeust_type in ['service', 'task']:
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response['type'] = reqeust_type
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response['code'] = -1
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response['message'] = 'invalid reqeust type!'
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else:
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if reqeust_type == 'service':
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method = payload.get('method')
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component = payload.get('component')
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method = camel_to_snake(method)
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if payload.get("method") is None:
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response = {"requestId": requestId, "type": reqeust_type, "code": -1,
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"message": "没有method参数！"}
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else:
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if component == "" or component is None:
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executor = self
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else:
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executor = self.get_component(component)
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if executor:
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try:
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kwargs = payload.get("params")
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if kwargs is None:
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kwargs = {}
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result = await executor.execute(method, **kwargs)
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response = {"requestId": requestId, "type": reqeust_type, "code": 0,
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"message": "success", "result": result}
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except Exception as e:
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response = {"requestId": requestId, "type": reqeust_type, "code": -1, "message": str(e)}
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else:
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response = {"requestId": requestId, "type": reqeust_type, "code": -2,
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"message": f"Executor {component} not found"}
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else:
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try:
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kwargs = payload.get("params")
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if kwargs is None:
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kwargs = {}
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result = await self.execute_task(**kwargs)
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response = {"requestId": requestId, "type": reqeust_type, "code": 0, "message": "success",
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"result": result}
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except Exception as e:
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response = {"requestId": requestId, "type": reqeust_type, "code": -1, "message": str(e)}
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self.client.publish(response_topic, json.dumps(response))
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def on_connect(self, client, userdata, flags, rc):
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if rc == 0:
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self.logger.info("Connected to MQTT Broker")
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client.subscribe(MQTT_RPC_TOPIC)
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else:
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self.logger.info("Failed to connect, return code %d\n", rc)
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def on_disconnect(self, client, userdata, rc):
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self.logger.info("MQTT disconnect, return code %d\n", rc)
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def on_message(self, client, userdata, message):
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asyncio.run(self.handle_message(client, userdata, message))
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def _stop_components(self):
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for componentKey in self.components.keys():
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component = self.components[componentKey]
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component.configure(settings)
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if component.__class__.component_auto_start:
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try:
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if component.is_started:
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component.stop()
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except Exception as e:
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self.logger.error(f"{componentKey}停止失败", e)
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def start(self):
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# mqtt
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mqtt_server = settings.get("mqtt.server", "127.0.0.1")
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mqtt_port = settings.get("mqtt.port", 1883)
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mqtt_username = settings.get("mqtt.username", "")
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mqtt_password = settings.get("mqtt.password", "")
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self.logger.info(f"mqtt: {mqtt_server}:{mqtt_port}:{mqtt_username}")
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self.client.username_pw_set(mqtt_username, mqtt_password)
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self.client.connect(mqtt_server, mqtt_port, 60)
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# self.client.loop_start()
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# 在单独的事件循环中启动 TCP 服务器和 FastAPI 服务器
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self.loop = asyncio.new_event_loop()
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asyncio.set_event_loop(self.loop)
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tasks = []
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# tcp server
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tcp_enable = settings.get("tcp.enable", False)
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if tcp_enable:
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tasks.append(self.loop.create_task(self.start_tcp_server()))
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# 启动 FastAPI 服务器
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tasks.append(self.loop.create_task(self.server.serve()))
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self.logger.info('edge context start!')
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# 保持事件循环的持续运行
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self.loop.run_forever()
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def stop(self):
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self._stop_components()
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self.client.loop_stop()
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self.client.disconnect()
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# rest
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# 停止 FastAPI 服务器
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asyncio.run(self.stop_rest_server())
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# tcp server
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tcp_enable = settings.get("tcp.enable", False)
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if tcp_enable:
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asyncio.run(self.stop_tcp_server())
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if self.loop:
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self.loop.stop()
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# 确保事件循环停止后再关闭
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if not self.loop.is_running():
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self.loop.close()
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self.logger.info("Edge context stopped!")
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async def handle_tcp(self, reader, writer):
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addr = writer.get_extra_info('peername')
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self.logger.info(f"Connected by {addr}")
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self.tcp_clients.add(writer) # 添加客户端连接
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try:
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while True:
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data = await reader.read(4096)
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if not data:
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break
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requestId = None
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try:
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req = json.loads(data.decode('utf-8'))
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self.logger.info(f"Received JSON request: {req}")
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requestId = req["requestId"]
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response = {
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"requestId": requestId,
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"code": 0,
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"message": "success",
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}
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reqeust_type = req["type"]
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if not reqeust_type in ['service', 'task']:
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response['type'] = reqeust_type
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response['code'] = -1
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response['message'] = 'invalid reqeust type!'
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else:
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if reqeust_type == 'service':
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method = req.get('method')
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component = req.get('component')
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method = camel_to_snake(method)
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|
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if req.get("method") is None:
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": -1,
|
|||
|
|
"message": "没有method参数！"}
|
|||
|
|
else:
|
|||
|
|
if component == "" or component is None:
|
|||
|
|
executor = self
|
|||
|
|
else:
|
|||
|
|
executor = self.get_component(component)
|
|||
|
|
if executor:
|
|||
|
|
try:
|
|||
|
|
kwargs = req.get("params")
|
|||
|
|
if kwargs is None:
|
|||
|
|
kwargs = {}
|
|||
|
|
result = await executor.execute(method, **kwargs)
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": 0,
|
|||
|
|
"message": "success", "result": result}
|
|||
|
|
except Exception as e:
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": -1,
|
|||
|
|
"message": str(e)}
|
|||
|
|
else:
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": -2,
|
|||
|
|
"message": f"Executor {component} not found"}
|
|||
|
|
else:
|
|||
|
|
try:
|
|||
|
|
kwargs = req.get("params")
|
|||
|
|
if kwargs is None:
|
|||
|
|
kwargs = {}
|
|||
|
|
result = await self.execute_task(**kwargs)
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": 0,
|
|||
|
|
"message": "success", "result": result}
|
|||
|
|
except Exception as e:
|
|||
|
|
response = {"requestId": requestId, "type": reqeust_type, "code": -1, "message": str(e)}
|
|||
|
|
writer.write(json.dumps(response).encode('utf-8'))
|
|||
|
|
await writer.drain()
|
|||
|
|
except json.JSONDecodeError:
|
|||
|
|
self.logger.error("Received invalid JSON")
|
|||
|
|
error_response = json.dumps({"requestId": requestId, "code": -9, "message": "Invalid JSON"})
|
|||
|
|
writer.write(error_response.encode('utf-8'))
|
|||
|
|
await writer.drain()
|
|||
|
|
break
|
|||
|
|
except asyncio.CancelledError:
|
|||
|
|
self.logger.error(f"Connection with {addr} cancelled.")
|
|||
|
|
finally:
|
|||
|
|
# 移除客户端连接
|
|||
|
|
self.tcp_clients.remove(writer)
|
|||
|
|
self.logger.info(f"Closing connection with {addr}")
|
|||
|
|
writer.close()
|
|||
|
|
await writer.wait_closed()
|
|||
|
|
|
|||
|
|
async def start_tcp_server(self):
|
|||
|
|
# Start the server
|
|||
|
|
tcp_port = settings.get("tcp.port", 13000)
|
|||
|
|
self.tcp_server = await asyncio.start_server(self.handle_tcp, '0.0.0.0', tcp_port)
|
|||
|
|
addr = self.tcp_server.sockets[0].getsockname()
|
|||
|
|
self.logger.info(f"Tcp Serving on {addr}")
|
|||
|
|
|
|||
|
|
# Create a future to keep the server running
|
|||
|
|
async with self.tcp_server:
|
|||
|
|
await self.tcp_server.serve_forever()
|
|||
|
|
|
|||
|
|
async def broadcast(self, message):
|
|||
|
|
# 向所有连接的客户端发送消息
|
|||
|
|
for client in self.tcp_clients:
|
|||
|
|
client.write(message.encode())
|
|||
|
|
await client.drain()
|
|||
|
|
|
|||
|
|
async def stop_tcp_server(self):
|
|||
|
|
self.logger.info("Stopping tcp server...")
|
|||
|
|
self.tcp_server.close() # Stop accepting new connections
|
|||
|
|
await self.tcp_server.wait_closed() # Wait for the server to close existing connections
|
|||
|
|
for client in self.tcp_clients:
|
|||
|
|
client.close()
|
|||
|
|
await client.wait_closed()
|
|||
|
|
self.tcp_clients.clear()
|
|||
|
|
self.logger.info("Tcp Server stopped.")
|
|||
|
|
|
|||
|
|
async def stop_rest_server(self):
|
|||
|
|
self.logger.info("Stopping fastapi server...")
|
|||
|
|
self.server.should_exit = True
|
|||
|
|
# await self.server.shutdown()
|
|||
|
|
await asyncio.sleep(5)
|
|||
|
|
self.logger.info("Fastapi Server stopped.")
|
|||
|
|
|
|||
|
|
@service()
|
|||
|
|
async def execute_task(self, **kwargs):
|
|||
|
|
"""
|
|||
|
|
执行任务
|
|||
|
|
:return:
|
|||
|
|
"""
|
|||
|
|
task = EdgeTask(**kwargs)
|
|||
|
|
|
|||
|
|
async def execute_step(s: EdgeTaskStep):
|
|||
|
|
try:
|
|||
|
|
if s.component is None or s.component == "":
|
|||
|
|
component = self
|
|||
|
|
else:
|
|||
|
|
component = self.get_component(s.component)
|
|||
|
|
res = await component.execute(s.method, **s.params)
|
|||
|
|
return {"status": "success", "result": res}
|
|||
|
|
except Exception as e:
|
|||
|
|
return {"status": "error", "error": str(e)}
|
|||
|
|
|
|||
|
|
async def execute_steps(steps: List[EdgeTaskStep]):
|
|||
|
|
tasks = [execute_step(sub_step) for sub_step in steps]
|
|||
|
|
return await asyncio.gather(*tasks)
|
|||
|
|
|
|||
|
|
self.logger.info(f"执行任务{task.name}({task.id})开始")
|
|||
|
|
results = []
|
|||
|
|
if len(task.steps) > 0:
|
|||
|
|
for step in task.steps:
|
|||
|
|
if isinstance(step, list):
|
|||
|
|
# 如果是 List[EdgeTaskStep]，并行执行这些步骤
|
|||
|
|
result = await execute_steps(step)
|
|||
|
|
else:
|
|||
|
|
# 否则，顺序执行单个步骤
|
|||
|
|
result = await execute_step(step)
|
|||
|
|
results.append(result)
|
|||
|
|
|
|||
|
|
self.logger.info(f"执行任务{task.name}({task.id})结束")
|
|||
|
|
return results
|
|||
|
|
|
|||
|
|
@service()
|
|||
|
|
def list_components(self):
|
|||
|
|
"""
|
|||
|
|
列出当前的边缘组件
|
|||
|
|
:return:
|
|||
|
|
"""
|
|||
|
|
return list(self.components.keys())
|
|||
|
|
|
|||
|
|
@service()
|
|||
|
|
def list_component_services(self, comp=None):
|
|||
|
|
"""
|
|||
|
|
列出指定边缘组件的服务函数
|
|||
|
|
:return:
|
|||
|
|
"""
|
|||
|
|
comp = self if comp is None else self.get_component(comp)
|
|||
|
|
if comp is None:
|
|||
|
|
raise RuntimeError(f"Component {comp} not found")
|
|||
|
|
|
|||
|
|
methods = inspect.getmembers(comp.__class__, predicate=inspect.isfunction)
|
|||
|
|
services = []
|
|||
|
|
for name, method in methods:
|
|||
|
|
if hasattr(method, '_component_service') and method._component_service:
|
|||
|
|
services.append(name)
|
|||
|
|
return services
|