Build lightweight AI agent admin

backend-fastapi/alembic/env.py

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+import asyncio
+import importlib
+import pkgutil
+from logging.config import fileConfig
+from pathlib import Path
+
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from alembic import context
+
+from app.database import Base
+from app.config import settings
+
+
+def auto_import_models():
+    """
+    自动导入所有模块下的*model.py文件
+    扫描项目根目录下所有以model结尾的py文件（如model.py、screen_model.py、material_model.py）
+    """
+    project_root = Path(__file__).parent.parent
+    
+    # 需要扫描的目录（可以添加更多）
+    scan_dirs = ["zq_demo", "core", "scheduler", "online_dev", "ai_platform", "zq_smart_table"]
+    
+    for scan_dir in scan_dirs:
+        scan_path = project_root / scan_dir
+        if not scan_path.exists():
+            continue
+        
+        # 递归查找所有以model结尾的py文件（如model.py、screen_model.py、material_model.py）
+        for model_file in scan_path.rglob("*model.py"):
+            # 计算模块路径，如 zq_demo.demo.model 或 core.screen_design.screen_model
+            relative_path = model_file.relative_to(project_root)
+            module_path = str(relative_path.with_suffix("")).replace("/", ".").replace("\\", ".")
+            
+            try:
+                importlib.import_module(module_path)
+            except ImportError as e:
+                print(f"Warning: Failed to import {module_path}: {e}")
+
+
+# 自动导入所有模型
+auto_import_models()
+
+config = context.config
+
+# 设置数据库URL
+config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode."""
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    """Run migrations in 'online' mode with async engine."""
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode."""
+    asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()