686 lines
25 KiB
Python
686 lines
25 KiB
Python
import subprocess
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import os
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import sys
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import shutil
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import threading
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from pathlib import Path
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from datetime import datetime
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from fastapi import APIRouter, HTTPException, UploadFile, File, Form, Query
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from fastapi.responses import FileResponse
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from mysql.connector import Error as MySQLError
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# 复用项目依赖
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from ds.db import db
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from encryption.encrypt_decorator import encrypt_response
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from schema.model_schema import (
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ModelCreateRequest,
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ModelUpdateRequest,
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ModelResponse,
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ModelListResponse
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)
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from schema.response_schema import APIResponse
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from util.model_util import load_yolo_model # 模型加载工具
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# 路径配置
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CURRENT_FILE_PATH = Path(__file__).resolve()
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PROJECT_ROOT = CURRENT_FILE_PATH.parent.parent
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MODEL_SAVE_ROOT = PROJECT_ROOT / "resource" / "models"
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MODEL_SAVE_ROOT.mkdir(exist_ok=True, parents=True)
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DB_PATH_PREFIX_TO_REMOVE = str(PROJECT_ROOT) + os.sep
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# 模型限制
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ALLOWED_MODEL_EXT = {"pt"}
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MAX_MODEL_SIZE = 100 * 1024 * 1024 # 100MB
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# 全局模型变量（带版本标识和置信度）
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global _yolo_model, _current_model_version, _current_conf_threshold
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_yolo_model = None
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_current_model_version = None # 模型版本标识
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_current_conf_threshold = 0.8 # 默认置信度初始值
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router = APIRouter(prefix="/models", tags=["模型管理"])
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# 服务重启核心工具函数（保持不变）
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def restart_service():
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"""重启当前FastAPI服务进程"""
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print("\n[服务重启] 检测到默认模型更换，开始清理资源并重启...")
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try:
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# 关闭所有WebSocket连接
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try:
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from ws import connected_clients
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if connected_clients:
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print(f"[服务重启] 关闭{len(connected_clients)}个WebSocket旧连接")
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for ip, conn in list(connected_clients.items()):
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try:
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if conn.consumer_task and not conn.consumer_task.done():
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conn.consumer_task.cancel()
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conn.websocket.close(code=1001, reason="模型更新，服务重启")
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connected_clients.pop(ip)
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except Exception as e:
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print(f"[服务重启] 关闭客户端{ip}连接失败：{str(e)}")
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except ImportError:
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print("[服务重启] 未找到WebSocket连接管理模块，跳过连接关闭")
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# 关闭数据库连接
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if hasattr(db, "close_all_connections"):
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db.close_all_connections()
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else:
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print("[警告] db模块未实现close_all_connections，可能存在连接泄漏")
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# 启动新进程
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python_exec = sys.executable
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current_argv = sys.argv
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print(f"[服务重启] 启动新进程：{python_exec} {' '.join(current_argv)}")
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subprocess.Popen(
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[python_exec] + current_argv,
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close_fds=True,
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start_new_session=True,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE
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)
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# 退出当前进程
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print("[服务重启] 新进程已启动，当前进程退出")
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sys.exit(0)
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except Exception as e:
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print(f"[服务重启] 重启失败：{str(e)}")
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raise HTTPException(status_code=500, detail=f"模型更换成功，但服务重启失败：{str(e)}") from e
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# 模型路径验证工具函数（保持不变）
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def get_valid_model_abs_path(relative_path: str) -> str:
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try:
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relative_path = relative_path.replace("/", os.sep)
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model_abs_path = PROJECT_ROOT / relative_path
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model_abs_path = model_abs_path.resolve()
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model_abs_path_str = str(model_abs_path)
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if not model_abs_path_str.startswith(str(MODEL_SAVE_ROOT)):
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raise HTTPException(
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status_code=400,
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detail=f"模型路径非法！允许目录：{str(MODEL_SAVE_ROOT)}，当前路径：{model_abs_path_str}"
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)
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if not model_abs_path.exists():
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raise HTTPException(
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status_code=404,
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detail=f"模型文件不存在！路径：{model_abs_path_str}"
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)
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if not model_abs_path.is_file():
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raise HTTPException(
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status_code=400,
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detail=f"路径不是文件！路径：{model_abs_path_str}"
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)
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file_size = model_abs_path.stat().st_size
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if file_size > MAX_MODEL_SIZE:
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raise HTTPException(
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status_code=400,
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detail=f"模型文件过大（{file_size // 1024 // 1024}MB），超过限制{MAX_MODEL_SIZE // 1024 // 1024}MB"
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)
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file_ext = model_abs_path.suffix.lower()
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if file_ext not in [f".{ext}" for ext in ALLOWED_MODEL_EXT]:
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raise HTTPException(
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status_code=400,
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detail=f"模型格式非法（仅支持{ALLOWED_MODEL_EXT}）！当前格式：{file_ext}"
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)
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print(f"[模型路径校验] 成功！路径：{model_abs_path_str}，大小：{file_size // 1024}KB")
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return model_abs_path_str
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except HTTPException as e:
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raise e
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except Exception as e:
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raise HTTPException(
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status_code=500,
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detail=f"路径处理失败：{str(e)}"
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) from e
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# 对外提供当前模型（带版本校验）（保持不变）
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def get_current_yolo_model():
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"""供检测模块获取当前最新默认模型（仅版本变化时重新加载）"""
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global _yolo_model, _current_model_version
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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cursor.execute("SELECT path FROM model WHERE is_default = 1")
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default_model = cursor.fetchone()
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if not default_model:
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print("[get_current_yolo_model] 暂无默认模型")
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return None
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# 1. 计算当前默认模型的唯一版本标识
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valid_abs_path = get_valid_model_abs_path(default_model["path"])
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model_stat = os.stat(valid_abs_path)
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model_version = f"{hash(valid_abs_path)}_{model_stat.st_mtime_ns}"
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# 2. 版本未变化则复用已有模型
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if _yolo_model and _current_model_version == model_version:
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return _yolo_model
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# 3. 版本变化时重新加载模型
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_yolo_model = load_yolo_model(valid_abs_path)
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if _yolo_model:
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setattr(_yolo_model, "model_path", valid_abs_path)
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_current_model_version = model_version
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print(f"[get_current_yolo_model] 模型版本更新，重新加载（新版本：{model_version[:10]}...）")
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else:
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print(f"[get_current_yolo_model] 加载最新默认模型失败：{valid_abs_path}")
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return _yolo_model
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except Exception as e:
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print(f"[get_current_yolo_model] 加载失败：{str(e)}")
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return None
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finally:
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db.close_connection(conn, cursor)
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# 新增：获取当前置信度阈值
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def get_current_conf_threshold():
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"""供检测模块获取当前设置的置信度阈值"""
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global _current_conf_threshold
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return _current_conf_threshold
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# 1. 上传模型（保持不变）
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@router.post("", response_model=APIResponse, summary="上传YOLO模型（.pt格式）")
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@encrypt_response()
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async def upload_model(
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name: str = Form(..., description="模型名称"),
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description: str = Form(None, description="模型描述"),
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is_default: bool = Form(False, description="是否设为默认模型"),
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file: UploadFile = File(..., description=f"YOLO模型文件（.pt，最大{MAX_MODEL_SIZE // 1024 // 1024}MB）")
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):
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conn = None
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cursor = None
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saved_file_path = None
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try:
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# 校验文件
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file_ext = file.filename.split(".")[-1].lower() if "." in file.filename else ""
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if file_ext not in ALLOWED_MODEL_EXT:
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raise HTTPException(
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status_code=400,
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detail=f"仅支持{ALLOWED_MODEL_EXT}格式，当前：{file_ext}"
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)
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if file.size > MAX_MODEL_SIZE:
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raise HTTPException(
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status_code=400,
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detail=f"文件过大！最大{MAX_MODEL_SIZE // 1024 // 1024}MB，当前{file.size // 1024 // 1024}MB"
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)
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# 保存文件
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timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
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safe_filename = f"model_{timestamp}_{file.filename.replace(' ', '_')}"
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saved_file_path = MODEL_SAVE_ROOT / safe_filename
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with open(saved_file_path, "wb") as f:
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shutil.copyfileobj(file.file, f)
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saved_file_path.chmod(0o644) # 设置权限
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# 数据库路径处理
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db_relative_path = str(saved_file_path).replace(DB_PATH_PREFIX_TO_REMOVE, "").replace(os.sep, "/")
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# 数据库操作
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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if is_default:
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cursor.execute("UPDATE model SET is_default = 0")
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insert_sql = """
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INSERT INTO model (name, path, is_default, description, file_size)
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VALUES (%s, %s, %s, %s, %s)
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"""
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cursor.execute(insert_sql, (name, db_relative_path, 1 if is_default else 0, description, file.size))
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conn.commit()
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cursor.execute("SELECT * FROM model WHERE id = LAST_INSERT_ID()")
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new_model = cursor.fetchone()
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if not new_model:
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raise HTTPException(status_code=500, detail="上传成功但无法获取记录")
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# 加载默认模型并更新版本
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global _yolo_model, _current_model_version
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if is_default:
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valid_abs_path = get_valid_model_abs_path(db_relative_path)
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_yolo_model = load_yolo_model(valid_abs_path)
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if _yolo_model:
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setattr(_yolo_model, "model_path", valid_abs_path)
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model_stat = os.stat(valid_abs_path)
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_current_model_version = f"{hash(valid_abs_path)}_{model_stat.st_mtime_ns}"
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else:
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raise HTTPException(
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status_code=500,
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detail=f"上传成功，但加载默认模型失败（路径：{valid_abs_path}）"
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)
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return APIResponse(
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code=201,
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message=f"模型上传成功！ID：{new_model['id']}",
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data=ModelResponse(** new_model)
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)
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except MySQLError as e:
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if conn:
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conn.rollback()
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if saved_file_path and saved_file_path.exists():
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saved_file_path.unlink()
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raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
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except Exception as e:
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if saved_file_path and saved_file_path.exists():
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saved_file_path.unlink()
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raise HTTPException(status_code=500, detail=f"服务器错误：{str(e)}") from e
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finally:
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await file.close()
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db.close_connection(conn, cursor)
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# 2. 获取模型列表（保持不变）
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@router.get("", response_model=APIResponse, summary="获取模型列表（分页）")
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@encrypt_response()
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async def get_model_list(
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page: int = Query(1, ge=1),
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page_size: int = Query(10, ge=1, le=100),
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name: str = Query(None),
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is_default: bool = Query(None)
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):
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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where_clause = []
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params = []
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if name:
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where_clause.append("name LIKE %s")
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params.append(f"%{name}%")
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if is_default is not None:
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where_clause.append("is_default = %s")
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params.append(1 if is_default else 0)
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# 总记录数
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count_sql = "SELECT COUNT(*) AS total FROM model"
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if where_clause:
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count_sql += " WHERE " + " AND ".join(where_clause)
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cursor.execute(count_sql, params)
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total = cursor.fetchone()["total"]
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# 分页数据
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offset = (page - 1) * page_size
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list_sql = "SELECT * FROM model"
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if where_clause:
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list_sql += " WHERE " + " AND ".join(where_clause)
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list_sql += " ORDER BY updated_at DESC LIMIT %s OFFSET %s"
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params.extend([page_size, offset])
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cursor.execute(list_sql, params)
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model_list = cursor.fetchall()
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return APIResponse(
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code=200,
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message=f"获取成功！共{total}条记录",
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data=ModelListResponse(
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total=total,
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models=[ModelResponse(** model) for model in model_list]
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)
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)
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except MySQLError as e:
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raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# 3. 获取默认模型（保持不变）
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@router.get("/default", response_model=APIResponse, summary="获取当前默认模型")
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@encrypt_response()
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async def get_default_model():
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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cursor.execute("SELECT * FROM model WHERE is_default = 1")
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default_model = cursor.fetchone()
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if not default_model:
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raise HTTPException(status_code=404, detail="暂无默认模型")
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valid_abs_path = get_valid_model_abs_path(default_model["path"])
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global _yolo_model, _current_model_version
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if not _yolo_model:
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_yolo_model = load_yolo_model(valid_abs_path)
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if _yolo_model:
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setattr(_yolo_model, "model_path", valid_abs_path)
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model_stat = os.stat(valid_abs_path)
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_current_model_version = f"{hash(valid_abs_path)}_{model_stat.st_mtime_ns}"
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else:
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raise HTTPException(
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status_code=500,
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detail=f"默认模型存在，但加载失败（路径：{valid_abs_path}）"
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)
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return APIResponse(
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code=200,
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message="默认模型查询成功",
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data=ModelResponse(**default_model)
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)
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except MySQLError as e:
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raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# 4. 获取单个模型详情（保持不变）
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@router.get("/{model_id}", response_model=APIResponse, summary="获取单个模型详情")
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@encrypt_response()
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async def get_model(model_id: int):
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
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model = cursor.fetchone()
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if not model:
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raise HTTPException(status_code=404, detail=f"模型不存在！ID：{model_id}")
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try:
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model_abs_path = get_valid_model_abs_path(model["path"])
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except HTTPException as e:
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return APIResponse(
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code=200,
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message=f"查询成功，但路径异常：{e.detail}",
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data=ModelResponse(** model)
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)
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return APIResponse(
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code=200,
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message="查询成功",
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data=ModelResponse(**model)
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)
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except MySQLError as e:
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raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
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finally:
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db.close_connection(conn, cursor)
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# 5. 更新模型信息（保持不变）
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@router.put("/{model_id}", response_model=APIResponse, summary="更新模型信息")
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@encrypt_response()
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async def update_model(model_id: int, model_update: ModelUpdateRequest):
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conn = None
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cursor = None
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try:
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conn = db.get_connection()
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cursor = conn.cursor(dictionary=True)
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cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
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exist_model = cursor.fetchone()
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if not exist_model:
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raise HTTPException(status_code=404, detail=f"模型不存在！ID：{model_id}")
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update_fields = []
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params = []
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if model_update.name is not None:
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update_fields.append("name = %s")
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params.append(model_update.name)
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if model_update.description is not None:
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update_fields.append("description = %s")
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params.append(model_update.description)
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need_load_default = False
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if model_update.is_default is not None:
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if model_update.is_default:
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cursor.execute("UPDATE model SET is_default = 0")
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update_fields.append("is_default = 1")
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need_load_default = True
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else:
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cursor.execute("SELECT COUNT(*) AS cnt FROM model WHERE is_default = 1")
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default_count = cursor.fetchone()["cnt"]
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if default_count == 1 and exist_model["is_default"]:
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raise HTTPException(
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status_code=400,
|
||
detail="当前是唯一默认模型，不可取消！"
|
||
)
|
||
update_fields.append("is_default = 0")
|
||
|
||
if not update_fields:
|
||
raise HTTPException(status_code=400, detail="至少需提供一个更新字段")
|
||
|
||
params.append(model_id)
|
||
update_sql = f"""
|
||
UPDATE model
|
||
SET {', '.join(update_fields)}, updated_at = CURRENT_TIMESTAMP
|
||
WHERE id = %s
|
||
"""
|
||
cursor.execute(update_sql, params)
|
||
conn.commit()
|
||
|
||
cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
|
||
updated_model = cursor.fetchone()
|
||
|
||
# 更新模型后重置版本标识
|
||
global _yolo_model, _current_model_version
|
||
if need_load_default:
|
||
valid_abs_path = get_valid_model_abs_path(updated_model["path"])
|
||
_yolo_model = load_yolo_model(valid_abs_path)
|
||
if _yolo_model:
|
||
setattr(_yolo_model, "model_path", valid_abs_path)
|
||
model_stat = os.stat(valid_abs_path)
|
||
_current_model_version = f"{hash(valid_abs_path)}_{model_stat.st_mtime_ns}"
|
||
else:
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"更新成功，但加载新默认模型失败（路径：{valid_abs_path}）"
|
||
)
|
||
|
||
return APIResponse(
|
||
code=200,
|
||
message="模型更新成功",
|
||
data=ModelResponse(** updated_model)
|
||
)
|
||
|
||
except MySQLError as e:
|
||
if conn:
|
||
conn.rollback()
|
||
raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
|
||
finally:
|
||
db.close_connection(conn, cursor)
|
||
|
||
|
||
# 5.1 更换默认模型（添加置信度参数）
|
||
@router.put("/{model_id}/set-default", response_model=APIResponse, summary="更换默认模型（自动重启服务）")
|
||
@encrypt_response()
|
||
async def set_default_model(
|
||
model_id: int,
|
||
conf_threshold: float = Query(0.8, ge=0.01, le=0.99, description="模型检测置信度阈值（0.01-0.99）")
|
||
):
|
||
conn = None
|
||
cursor = None
|
||
try:
|
||
conn = db.get_connection()
|
||
cursor = conn.cursor(dictionary=True)
|
||
conn.autocommit = False # 开启事务
|
||
|
||
# 1. 校验目标模型是否存在
|
||
cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
|
||
target_model = cursor.fetchone()
|
||
if not target_model:
|
||
raise HTTPException(status_code=404, detail=f"目标模型不存在！ID：{model_id}")
|
||
|
||
# 2. 检查是否已为默认模型
|
||
if target_model["is_default"]:
|
||
return APIResponse(
|
||
code=200,
|
||
message=f"模型ID：{model_id} 已是默认模型，无需更换和重启",
|
||
data=ModelResponse(**target_model)
|
||
)
|
||
|
||
# 3. 校验目标模型文件合法性
|
||
try:
|
||
valid_abs_path = get_valid_model_abs_path(target_model["path"])
|
||
except HTTPException as e:
|
||
raise HTTPException(
|
||
status_code=400,
|
||
detail=f"目标模型文件非法，无法设为默认：{e.detail}"
|
||
) from e
|
||
|
||
# 4. 数据库事务：更新默认模型状态
|
||
try:
|
||
cursor.execute("UPDATE model SET is_default = 0, updated_at = CURRENT_TIMESTAMP")
|
||
cursor.execute(
|
||
"UPDATE model SET is_default = 1, updated_at = CURRENT_TIMESTAMP WHERE id = %s",
|
||
(model_id,)
|
||
)
|
||
conn.commit()
|
||
except MySQLError as e:
|
||
conn.rollback()
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"更新默认模型状态失败（已回滚）：{str(e)}"
|
||
) from e
|
||
|
||
# 5. 验证新模型可加载性
|
||
test_model = load_yolo_model(valid_abs_path)
|
||
if not test_model:
|
||
conn.rollback()
|
||
raise HTTPException(
|
||
status_code=500,
|
||
detail=f"新默认模型加载失败，已回滚状态（路径：{valid_abs_path}）"
|
||
)
|
||
|
||
# 6. 重新查询更新后的模型信息
|
||
cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
|
||
updated_model = cursor.fetchone()
|
||
|
||
# 7. 重置版本标识和更新置信度
|
||
global _current_model_version, _current_conf_threshold
|
||
_current_model_version = None
|
||
_current_conf_threshold = conf_threshold # 保存动态置信度
|
||
print(f"[更换默认模型] 已重置模型版本标识，设置新置信度：{conf_threshold}")
|
||
|
||
# 8. 延迟重启服务
|
||
print(f"[更换默认模型] 成功！将在1秒后重启服务以应用新模型（ID：{model_id}）")
|
||
threading.Timer(
|
||
interval=1.0,
|
||
function=restart_service
|
||
).start()
|
||
|
||
# 9. 返回成功响应
|
||
return APIResponse(
|
||
code=200,
|
||
message=f"已成功更换默认模型（ID：{model_id}），置信度：{conf_threshold}！服务将在1秒后自动重启以应用新模型",
|
||
data=ModelResponse(** updated_model)
|
||
)
|
||
|
||
except MySQLError as e:
|
||
if conn:
|
||
conn.rollback()
|
||
raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
|
||
finally:
|
||
if conn:
|
||
conn.autocommit = True
|
||
db.close_connection(conn, cursor)
|
||
|
||
|
||
# 6. 删除模型（保持不变）
|
||
@router.delete("/{model_id}", response_model=APIResponse, summary="删除模型")
|
||
@encrypt_response()
|
||
async def delete_model(model_id: int):
|
||
conn = None
|
||
cursor = None
|
||
try:
|
||
conn = db.get_connection()
|
||
cursor = conn.cursor(dictionary=True)
|
||
|
||
cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
|
||
exist_model = cursor.fetchone()
|
||
if not exist_model:
|
||
raise HTTPException(status_code=404, detail=f"模型不存在！ID：{model_id}")
|
||
if exist_model["is_default"]:
|
||
raise HTTPException(status_code=400, detail="默认模型不可删除！")
|
||
|
||
try:
|
||
model_abs_path_str = get_valid_model_abs_path(exist_model["path"])
|
||
model_abs_path = Path(model_abs_path_str)
|
||
except HTTPException as e:
|
||
cursor.execute("DELETE FROM model WHERE id = %s", (model_id,))
|
||
conn.commit()
|
||
return APIResponse(
|
||
code=200,
|
||
message=f"记录删除成功，文件异常：{e.detail}",
|
||
data=None
|
||
)
|
||
|
||
cursor.execute("DELETE FROM model WHERE id = %s", (model_id,))
|
||
conn.commit()
|
||
|
||
extra_msg = ""
|
||
try:
|
||
model_abs_path.unlink()
|
||
extra_msg = f"（已删除文件）"
|
||
except Exception as e:
|
||
extra_msg = f"（文件删除失败：{str(e)}）"
|
||
|
||
# 如果删除的是当前加载的模型，重置缓存
|
||
global _yolo_model, _current_model_version
|
||
if _yolo_model and str(getattr(_yolo_model, "model_path", "")) == model_abs_path_str:
|
||
_yolo_model = None
|
||
_current_model_version = None
|
||
print(f"[模型删除] 已清空全局模型缓存（路径：{model_abs_path_str}）")
|
||
|
||
return APIResponse(
|
||
code=200,
|
||
message=f"模型删除成功！ID：{model_id} {extra_msg}",
|
||
data=None
|
||
)
|
||
|
||
except MySQLError as e:
|
||
if conn:
|
||
conn.rollback()
|
||
raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
|
||
finally:
|
||
db.close_connection(conn, cursor)
|
||
|
||
|
||
# 7. 下载模型文件（保持不变）
|
||
@router.get("/{model_id}/download", summary="下载模型文件")
|
||
@encrypt_response()
|
||
async def download_model(model_id: int):
|
||
conn = None
|
||
cursor = None
|
||
try:
|
||
conn = db.get_connection()
|
||
cursor = conn.cursor(dictionary=True)
|
||
|
||
cursor.execute("SELECT * FROM model WHERE id = %s", (model_id,))
|
||
model = cursor.fetchone()
|
||
if not model:
|
||
raise HTTPException(status_code=404, detail=f"模型不存在！ID：{model_id}")
|
||
|
||
valid_abs_path = get_valid_model_abs_path(model["path"])
|
||
model_abs_path = Path(valid_abs_path)
|
||
|
||
return FileResponse(
|
||
path=model_abs_path,
|
||
filename=f"model_{model_id}_{model['name']}.pt",
|
||
media_type="application/octet-stream"
|
||
)
|
||
|
||
except MySQLError as e:
|
||
raise HTTPException(status_code=500, detail=f"数据库错误：{str(e)}") from e
|
||
finally:
|
||
db.close_connection(conn, cursor) |