03b532dd09
- Integrate Alembic for managing database schema migrations, replacing the previous SQL schema management. - Update the FastAPI application to synchronize interface definitions at startup. - Modify the Docker Compose command to run Alembic migrations before starting the API. - Enhance the Makefile with new commands for database migration and revision management. - Remove outdated SQL schema and seed files, transitioning to a more dynamic migration approach. - Add initial migration scripts and configuration for Alembic, ensuring a structured database evolution.
48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
"""异步数据库引擎 + 会话。
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- engine / SessionLocal:全局单例
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- get_session:FastAPI 依赖,按请求注入一个会话
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- sync_interface_definitions:启动时同步接口定义;表结构由 Alembic 管理
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"""
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from collections.abc import AsyncGenerator
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import json
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import config
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from services.interface_catalog import INTERFACE_DEFINITIONS
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from sqlalchemy import text
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from sqlalchemy.ext.asyncio import (
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AsyncSession,
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async_sessionmaker,
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create_async_engine,
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)
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engine = create_async_engine(config.DATABASE_URL, echo=False, pool_pre_ping=True)
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SessionLocal = async_sessionmaker(engine, expire_on_commit=False)
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async def get_session() -> AsyncGenerator[AsyncSession, None]:
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async with SessionLocal() as session:
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yield session
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async def sync_interface_definitions() -> None:
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async with engine.begin() as conn:
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for definition in INTERFACE_DEFINITIONS:
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await conn.execute(
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text(
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"INSERT INTO interface_definitions "
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"(interface_type, name, capability, field_schema, enabled, version) "
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"VALUES (:interface_type, :name, :capability, CAST(:field_schema AS jsonb), TRUE, 1) "
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"ON CONFLICT (interface_type) DO UPDATE SET "
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"name = EXCLUDED.name, capability = EXCLUDED.capability, "
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"field_schema = EXCLUDED.field_schema, enabled = TRUE, updated_at = now()"
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),
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{
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"interface_type": definition["interface_type"],
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"name": definition["name"],
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"capability": definition["capability"],
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"field_schema": json.dumps({"fields": definition["fields"]}),
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},
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)
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