You've already forked DataMate
146 lines
4.5 KiB
Python
146 lines
4.5 KiB
Python
from logging.config import fileConfig
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from sqlalchemy import engine_from_config
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from sqlalchemy import pool
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from sqlalchemy import create_engine, text
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from alembic import context
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import os
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from urllib.parse import quote_plus
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# 导入应用配置和模型
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from app.core.config import settings
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from app.db.database import Base
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# 导入所有模型，以便 autogenerate 能够检测到它们
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from app.models import dataset_mapping # noqa
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# this is the Alembic Config object, which provides
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# access to the values within the .ini file in use.
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config = context.config
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def ensure_database_and_user():
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"""
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确保数据库和用户存在
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使用 root 用户连接 MySQL，创建数据库和应用用户
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"""
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# 只在 MySQL 配置时执行
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if not settings.mysql_host:
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return
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mysql_root_password = os.getenv('MYSQL_ROOT_PASSWORD', 'Huawei@123')
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# URL 编码密码以处理特殊字符
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encoded_password = quote_plus(mysql_root_password)
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# 使用 root 用户连接（不指定数据库）
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root_url = f"mysql+pymysql://root:{encoded_password}@{settings.mysql_host}:{settings.mysql_port}/"
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try:
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root_engine = create_engine(root_url, poolclass=pool.NullPool)
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with root_engine.connect() as conn:
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# 创建数据库（如果不存在）
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conn.execute(text(
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f"CREATE DATABASE IF NOT EXISTS `{settings.mysql_database}` "
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f"CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci"
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))
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conn.commit()
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# 创建用户（如果不存在）- 使用 MySQL 8 默认的 caching_sha2_password
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conn.execute(text(
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f"CREATE USER IF NOT EXISTS '{settings.mysql_user}'@'%' "
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f"IDENTIFIED BY '{settings.mysql_password}'"
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))
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conn.commit()
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# 授予权限
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conn.execute(text(
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f"GRANT ALL PRIVILEGES ON `{settings.mysql_database}`.* TO '{settings.mysql_user}'@'%'"
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))
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conn.commit()
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# 刷新权限
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conn.execute(text("FLUSH PRIVILEGES"))
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conn.commit()
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root_engine.dispose()
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print(f"✓ Database '{settings.mysql_database}' and user '{settings.mysql_user}' are ready")
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except Exception as e:
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print(f"⚠️ Warning: Could not ensure database and user: {e}")
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print(f" This may be expected if database already exists or permissions are set")
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# 从应用配置设置数据库 URL
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config.set_main_option('sqlalchemy.url', settings.sync_database_url)
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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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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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# add your model's MetaData object here
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# for 'autogenerate' support
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# from myapp import mymodel
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# target_metadata = mymodel.Base.metadata
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target_metadata = Base.metadata
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# other values from the config, defined by the needs of env.py,
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# can be acquired:
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# my_important_option = config.get_main_option("my_important_option")
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# ... etc.
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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode.
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This configures the context with just a URL
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and not an Engine, though an Engine is acceptable
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here as well. By skipping the Engine creation
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we don't even need a DBAPI to be available.
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Calls to context.execute() here emit the given string to the
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script output.
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"""
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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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In this scenario we need to create an Engine
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and associate a connection with the context.
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"""
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# 先确保数据库和用户存在
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ensure_database_and_user()
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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(
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connection=connection, target_metadata=target_metadata
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)
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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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