182 lines
7.8 KiB
Python
182 lines
7.8 KiB
Python
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# main.py (完整替换)
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from fastapi import FastAPI, HTTPException
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from fastapi.responses import JSONResponse
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from pydantic import BaseModel, HttpUrl
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import logging
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import logging.handlers
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import os
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from contextlib import asynccontextmanager
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import requests
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import cv2
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import numpy as np
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import io
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from PIL import Image
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from typing import List, Dict, Any, Set
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# --- Detector Module Imports ---
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# 我们现在只需要导入 detect_hardhat_with_sahi 来处理所有PPE相关的检测
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from utils.hardhat_detector import initialize_helmet_model, detect_hardhat_with_sahi
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from utils.smoking_detector import initialize_smoking_model, detect_smoking_behavior
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from utils.fire_smoke_detector import initialize_fire_smoke_model, detect_fire_smoke_with_sahi
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from utils.pho_detector import initialize_all_pho_models, detect_objects_by_class, PHO_DETECTOR_SUPPORTED_CLASSES
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# --- 1. 中央日志系统配置 ---
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def setup_logging():
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LOG_DIR = "logs"
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if not os.path.exists(LOG_DIR):
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os.makedirs(LOG_DIR)
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log_file_path = os.path.join(LOG_DIR, "app.log")
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log_formatter = logging.Formatter(
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"%(asctime)s - %(levelname)s - [%(name)s] - [%(module)s.%(funcName)s:%(lineno)d] - %(message)s"
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)
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file_handler = logging.handlers.RotatingFileHandler(
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log_file_path, maxBytes=5*1024*1024, backupCount=5, encoding="utf-8"
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)
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file_handler.setFormatter(log_formatter)
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stream_handler = logging.StreamHandler()
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stream_handler.setFormatter(log_formatter)
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root_logger = logging.getLogger()
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root_logger.setLevel(logging.INFO)
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if root_logger.hasHandlers():
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root_logger.handlers.clear()
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root_logger.addHandler(file_handler)
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root_logger.addHandler(stream_handler)
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return logging.getLogger(__name__)
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logger = setup_logging()
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# --- 2. 应用启动/关闭事件 ---
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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"""在应用启动时初始化所有模型。"""
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logger.info("应用启动程序开始...")
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# (此处的模型初始化调用保持不变)
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try: initialize_helmet_model()
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except Exception: logger.error("初始化安全帽（PPE）模型失败", exc_info=True)
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try: initialize_smoking_model()
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except Exception: logger.error("初始化吸烟（smoking）模型失败", exc_info=True)
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try: initialize_fire_smoke_model()
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except Exception: logger.error("初始化火焰和烟雾模型失败", exc_info=True)
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try: initialize_all_pho_models()
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except Exception: logger.error("初始化光伏模型失败", exc_info=True)
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yield
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logger.info("应用已关闭。")
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app = FastAPI(lifespan=lifespan)
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# --- 3. 请求模型和辅助函数 ---
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class DetectionRequest(BaseModel):
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type: str
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url: HttpUrl
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extract: bool = False
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def url_to_cv_image(url: str) -> np.ndarray:
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try:
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response = requests.get(str(url), timeout=15)
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response.raise_for_status()
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image_pil = Image.open(io.BytesIO(response.content)).convert("RGB")
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return cv2.cvtColor(np.array(image_pil), cv2.COLOR_RGB2BGR)
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except requests.exceptions.RequestException as e:
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raise HTTPException(status_code=400, detail=f"无法下载或处理图片。错误: {e}")
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"处理图片时发生未知错误: {e}")
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# --- 4. 路由和核心逻辑 ---
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# 新增：定义与PPE相关的任务关键字和它们的映射关系
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PPE_TASK_KEYWORDS = {"nohelmet", "novest"}
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VIOLATION_MAP = {
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"nohelmet": "nohelmet",
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"novest": "novest",
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}
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@app.post("/detect_image")
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async def run_detection(request: DetectionRequest):
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"""主检测端点，将任务分发给相应的检测器，现在会聚合PPE任务。"""
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logger.info(f"收到检测请求：types='{request.type}', url='{request.url}'")
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try:
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image_cv = url_to_cv_image(request.url)
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original_img_size = [image_cv.shape[1], image_cv.shape[0]]
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except HTTPException as e:
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logger.error(f"图像处理失败，URL: {request.url}", exc_info=True)
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return JSONResponse(status_code=e.status_code, content={"error": e.detail})
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requested_types: Set[str] = {t.strip().lower() for t in request.type.split(',') if t.strip()}
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if not requested_types:
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return JSONResponse(status_code=400, content={"error": "未指定任何检测类型。"})
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logger.info(f"已解析的检测类型: {requested_types}")
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aggregated_targets: List[Dict] = []
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error_messages: List[str] = []
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# --- 新的智能分发逻辑 ---
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# 1. 识别并聚合所有PPE相关的任务
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ppe_tasks_requested = requested_types.intersection(PPE_TASK_KEYWORDS)
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if ppe_tasks_requested:
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# 将用户请求的任务关键字 (hardhat, vest) 转换为后端需要的违规代码 (nohelmet, novest)
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violations_to_report = {VIOLATION_MAP[task] for task in ppe_tasks_requested}
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logger.info(f"分发PPE任务到检测器: {ppe_tasks_requested}, 需要报告的违规: {violations_to_report}")
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try:
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# 将需要报告的违规类型集合传递给检测函数
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results = detect_hardhat_with_sahi(image_cv, requested_violations=violations_to_report, extract=request.extract)
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aggregated_targets.extend(results)
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except Exception as e:
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logger.error(f"处理PPE任务 {ppe_tasks_requested} 时发生严重错误", exc_info=True)
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error_messages.append(f"处理PPE任务时出错: {e}")
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# 2. 识别并分发光伏板相关任务
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pho_tasks_to_run = requested_types.intersection(PHO_DETECTOR_SUPPORTED_CLASSES)
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if pho_tasks_to_run:
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logger.info(f"分发光伏板相关任务到检测器: {pho_tasks_to_run}")
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try:
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# 确保传递一个列表给detect_objects_by_class
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results = detect_objects_by_class(image_cv, list(pho_tasks_to_run))
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aggregated_targets.extend(results)
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except Exception as e:
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logger.error(f"处理光伏板任务 {pho_tasks_to_run} 时发生严重错误", exc_info=True)
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error_messages.append(f"处理光伏板任务时出错: {e}")
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# 3. 处理其他完全独立的任务
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remaining_tasks = requested_types - ppe_tasks_requested - pho_tasks_to_run
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if remaining_tasks:
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logger.info(f"正在处理其他独立任务: {remaining_tasks}")
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for task in remaining_tasks:
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try:
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detector_results = None
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if task == "smoking":
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detector_results = detect_smoking_behavior(image_cv, extract=request.extract)
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elif task in ["fire", "smoke"]:
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detector_results = detect_fire_smoke_with_sahi(image_cv, extract=request.extract)
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else:
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logger.warning(f"检测到未知任务类型，将被忽略: {task}")
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error_messages.append(f"未知的检测类型: '{task}'")
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continue
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if isinstance(detector_results, list):
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aggregated_targets.extend(detector_results)
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except Exception as e:
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logger.error(f"调用检测器处理任务 '{task}' 时失败", exc_info=True)
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error_messages.append(f"处理 '{task}' 时出错: {e}")
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# --- 最终响应构建 ---
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response_content = {
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"hasTarget": 1 if aggregated_targets else 0,
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"originalImgSize": original_img_size,
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"targets": aggregated_targets,
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}
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if error_messages:
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response_content["processing_errors"] = error_messages
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logger.warning(f"请求处理完成，但包含错误信息: {error_messages}")
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return JSONResponse(status_code=200, content=response_content)
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@app.get("/")
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def read_root():
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return {"message": "高级检测API正在运行。"}
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