小鱼开发
78 lines
1.9 KiB
Python
78 lines
1.9 KiB
Python
"""
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Alembic 环境配置 - PostgreSQL
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"""
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import os
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import sys
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from logging.config import fileConfig
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from sqlalchemy import engine_from_config, pool
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from alembic import context
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# 添加项目路径
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sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
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# 加载环境变量
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from dotenv import load_dotenv
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load_dotenv()
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# 导入模型
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from app.db.session import Base
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from app.models.avatar import Avatar # noqa
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from app.models.model_usage import ModelUsageLog # noqa
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from app.models.user import User # noqa
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# this is the Alembic Config object
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config = context.config
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# 从环境变量读取数据库 URL
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database_url = os.getenv("DATABASE_URL")
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if database_url:
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# 将 asyncpg 转换为 psycopg2 用于 alembic (同步)
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sync_database_url = database_url.replace("+asyncpg", "")
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config.set_main_option("sqlalchemy.url", sync_database_url)
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# 设置日志
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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# 模型元数据
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target_metadata = Base.metadata
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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode."""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=url,
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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"""Run migrations in 'online' mode."""
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connectable = engine_from_config(
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config.get_section(config.config_ini_section, {}),
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prefix="sqlalchemy.",
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poolclass=pool.NullPool,
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)
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with connectable.connect() as connection:
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context.configure(connection=connection, target_metadata=target_metadata)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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