73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
from __future__ import annotations
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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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# Сделаем проект импортируемым при запуске alembic из корня
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sys.path.append(os.getcwd())
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from app.db.base import Base # noqa
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from app.db import models # noqa: F401 # важно импортировать, чтобы metadata увидела модели
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# Alembic Config
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config = context.config
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# Логирование из alembic.ini
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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 = Base.metadata
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def get_url() -> str:
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"""Берём URL БД из env или собираем из DB_* переменных."""
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url = os.getenv("DATABASE_URL", "").strip()
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if url:
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return url
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host = os.getenv("DB_HOST", "db")
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port = os.getenv("DB_PORT", "5432")
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name = os.getenv("DB_NAME", "tg_poster")
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user = os.getenv("DB_USER", "postgres")
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pwd = os.getenv("DB_PASSWORD", "postgres")
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return f"postgresql+psycopg://{user}:{pwd}@{host}:{port}/{name}"
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def run_migrations_offline() -> None:
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"""Запуск миграций в оффлайн-режиме (генерация SQL)."""
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url = get_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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"""Запуск миграций в онлайн-режиме с активным соединением."""
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configuration = config.get_section(config.config_ini_section) or {}
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# ВАЖНО: используем ключ sqlalchemy.url и prefix="sqlalchemy."
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configuration["sqlalchemy.url"] = get_url()
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connectable = engine_from_config(
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configuration,
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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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