103 lines
3.0 KiB
Python
103 lines
3.0 KiB
Python
import os
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import sys
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from logging.config import fileConfig
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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# Add the project root directory to the Python path
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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# Import the SQLAlchemy metadata object
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from app.core.config import settings
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from app.db.session import Base
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from app.models import * # Import all models for Alembic to detect them
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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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# Set the sqlalchemy url from the app config if not already set
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if not config.get_main_option("sqlalchemy.url"):
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config.set_main_option("sqlalchemy.url", settings.SQLALCHEMY_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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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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target_metadata = Base.metadata
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def run_migrations_offline():
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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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if not url:
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raise ValueError("Database URL is not configured. Check alembic.ini or environment variables.")
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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():
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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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# Ensure we have a URL configured
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url = config.get_main_option("sqlalchemy.url")
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if not url:
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raise ValueError("Database URL is not configured. Check alembic.ini or environment variables.")
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# Build configuration dictionary
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alembic_config = config.get_section(config.config_ini_section)
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if not alembic_config:
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alembic_config = {}
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# Ensure sqlalchemy.url is in the config
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alembic_config["sqlalchemy.url"] = url
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# Create engine
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connectable = engine_from_config(
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alembic_config,
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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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is_sqlite = connection.dialect.name == "sqlite"
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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render_as_batch=is_sqlite, # Key configuration for SQLite
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compare_type=True,
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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() |