115 lines
3.7 KiB
Python
115 lines
3.7 KiB
Python
import os
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import sys
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from logging.config import fileConfig
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from sqlalchemy import pool
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from sqlalchemy import create_engine # Add create_engine import
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from alembic import context
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from core.database import Base # Import your Base
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# --- Add project root to sys.path ---
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# This assumes alembic/env.py is one level down from the project root (backend/)
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PROJECT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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sys.path.insert(0, PROJECT_DIR)
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# -----------------------------------
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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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# 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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# --- Construct DB URL from environment variables ---
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# Use environment variables similar to docker-compose
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db_user = os.getenv("POSTGRES_USER", "maia") # Default to 'maia' if not set
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db_password = os.getenv("POSTGRES_PASSWORD", "maia") # Default to 'maia' if not set
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db_host = os.getenv("DB_HOST", "db") # Default to 'db' service name
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db_port = os.getenv("DB_PORT", "5432") # Default to '5432'
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db_name = os.getenv("DB_NAME", "maia") # Default to 'maia'
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# Construct the URL, falling back to alembic.ini if needed
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url = os.getenv("DB_URL")
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if not url:
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# Try constructing from parts if DB_URL isn't set
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url = f"postgresql://{db_user}:{db_password}@{db_host}:{db_port}/{db_name}"
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# As a final fallback, use the URL from alembic.ini
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config_url = config.get_main_option("sqlalchemy.url")
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if not url and config_url:
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url = config_url
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# Update the config object so engine_from_config can potentially use it,
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# though we'll primarily use the constructed 'url' directly.
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config.set_main_option("sqlalchemy.url", url)
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# ----------------------------------------------------
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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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# --- Set target_metadata ---
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target_metadata = Base.metadata
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# ---------------------------
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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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context.configure(
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url=url, # Use the constructed 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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# Create engine directly using the constructed URL
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connectable = create_engine(url, poolclass=pool.NullPool)
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# Original approach using engine_from_config:
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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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