mirror of
https://github.com/Routstr/routstr-core.git
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88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
import asyncio
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import pathlib
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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 pool, text
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from sqlalchemy.engine import Connection
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from sqlalchemy.ext.asyncio import create_async_engine
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from sqlmodel import SQLModel
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from routstr.core.db import DATABASE_URL as NODE_DATABASE_URL
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# Add the parent directory to the Python path so we can import routstr modules
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sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[1]))
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config = context.config
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if config.config_file_name is None:
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raise ValueError("config_file_name is None")
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# Skip loading alembic's logging configuration to preserve our custom logging
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# fileConfig(config.config_file_name)
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# The SQLite import migrates databases other than the node's own (its snapshot,
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# its target) and passes them in here.
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DATABASE_URL = config.attributes.get("database_url", NODE_DATABASE_URL)
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# configparser interpolates "%", which %-encoded passwords and socket paths contain.
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config.set_main_option("sqlalchemy.url", DATABASE_URL.replace("%", "%%"))
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target_metadata = SQLModel.metadata
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# Every uvicorn worker and replica runs migrations on startup. PostgreSQL lets
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# them race on an empty database (duplicate ``alembic_version``), so they queue
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# on this transaction-scoped advisory lock; later ones then find head applied.
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MIGRATION_LOCK_KEY = 0x726F757473747221
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def run_migrations_offline() -> None:
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context.configure(
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url=DATABASE_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 do_run_migrations(connection: Connection) -> None:
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context.configure(
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connection=connection, target_metadata=target_metadata, compare_type=True
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)
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with context.begin_transaction():
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if connection.dialect.name == "postgresql":
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connection.execute(
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text("SELECT pg_advisory_xact_lock(:key)"), {"key": MIGRATION_LOCK_KEY}
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)
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context.run_migrations()
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async def run_migrations_online() -> None:
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connectable = create_async_engine(DATABASE_URL, poolclass=pool.NullPool)
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async with connectable.connect() as connection:
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await connection.run_sync(do_run_migrations)
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await connectable.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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# Check if we're already in an event loop (e.g., being called from FastAPI)
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try:
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loop = asyncio.get_running_loop()
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# If we're in an existing loop, create a new thread to run migrations
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import concurrent.futures
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with concurrent.futures.ThreadPoolExecutor() as executor:
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future = executor.submit(asyncio.run, run_migrations_online())
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future.result()
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except RuntimeError:
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# No event loop running, we can use asyncio.run directly
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asyncio.run(run_migrations_online())
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