59 lines
2 KiB
Python
59 lines
2 KiB
Python
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"""Alembic environment for the accounts database.
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The migration URL is derived from ``THERMOGRAPH_DATABASE_URL`` (the async app URL)
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by swapping to a sync driver — Alembic runs synchronously. Falls back to the
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SQLite accounts file when no Postgres URL is set (local / tests). ``target_metadata``
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is the accounts ``Base.metadata`` so ``alembic revision --autogenerate`` can diff
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against the ORM models.
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"""
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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 alembic import context
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from sqlalchemy import create_engine, pool
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# Alembic runs with cwd = backend/ (WORKDIR); make the backend package importable
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# regardless of where alembic is invoked from.
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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from accounts.db import Base # noqa: E402
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from accounts import models # noqa: E402,F401 (registers tables on Base.metadata)
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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 = Base.metadata
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def _sync_url() -> str:
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url = os.environ.get("THERMOGRAPH_DATABASE_URL", "").strip()
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if url.startswith("postgresql"):
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return url.replace("+asyncpg", "+psycopg")
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from accounts.db import DB_PATH # SQLite fallback path
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return f"sqlite:///{DB_PATH}"
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def run_migrations_offline() -> None:
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context.configure(url=_sync_url(), target_metadata=target_metadata,
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literal_binds=True, dialect_opts={"paramstyle": "named"})
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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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engine = create_engine(_sync_url(), poolclass=pool.NullPool, future=True)
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with engine.connect() as connection:
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context.configure(connection=connection, target_metadata=target_metadata,
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render_as_batch=connection.dialect.name == "sqlite")
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with context.begin_transaction():
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context.run_migrations()
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engine.dispose()
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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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