58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
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"""Alembic: синхронный движок SQLAlchemy + psycopg3 (отдельно от asyncpg в рантайме)."""
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from __future__ import annotations
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import os
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from logging.config import fileConfig
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from pathlib import Path
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from alembic import context
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from dotenv import load_dotenv
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from sqlalchemy import create_engine, pool
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ROOT = Path(__file__).resolve().parent.parent
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load_dotenv(ROOT / ".env")
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config = context.config
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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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target_metadata = None
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def get_sync_url() -> str:
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url = os.environ.get("DATABASE_URL", "").strip()
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if not url:
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raise RuntimeError("Задай DATABASE_URL для alembic upgrade")
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if url.startswith("postgres://"):
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url = url.replace("postgres://", "postgresql://", 1)
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if url.startswith("postgresql://") and "+psycopg" not in url and "+asyncpg" not in url:
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url = url.replace("postgresql://", "postgresql+psycopg://", 1)
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if "+asyncpg" in url:
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url = url.replace("+asyncpg", "+psycopg")
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return url
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def run_migrations_offline() -> None:
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context.configure(
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url=get_sync_url(),
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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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connectable = create_engine(get_sync_url(), poolclass=pool.NullPool)
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with connectable.connect() as connection:
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context.configure(connection=connection)
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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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