75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
from __future__ import annotations
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from sqlalchemy import text
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from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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from app.config import Settings
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class Base(DeclarativeBase):
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pass
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_engine: AsyncEngine | None = None
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_session_factory: async_sessionmaker[AsyncSession] | None = None
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def init_db(settings: Settings) -> None:
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global _engine, _session_factory
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if _engine is not None and _session_factory is not None:
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return
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_engine = create_async_engine(
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settings.pg_dsn,
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pool_pre_ping=True,
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pool_size=20,
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max_overflow=40,
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)
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_session_factory = async_sessionmaker(_engine, expire_on_commit=False)
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def get_engine() -> AsyncEngine:
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if _engine is None:
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raise RuntimeError("Database engine has not been initialized.")
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return _engine
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def get_session_factory() -> async_sessionmaker[AsyncSession]:
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if _session_factory is None:
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raise RuntimeError("Database session factory has not been initialized.")
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return _session_factory
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async def ensure_schema_compatibility() -> None:
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engine = get_engine()
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statements = [
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"DROP INDEX IF EXISTS idx_token_bindings_ip",
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"ALTER TABLE token_bindings ALTER COLUMN bound_ip TYPE TEXT USING bound_ip::text",
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"ALTER TABLE intercept_logs ALTER COLUMN bound_ip TYPE TEXT USING bound_ip::text",
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"ALTER TABLE token_bindings ADD COLUMN IF NOT EXISTS binding_mode VARCHAR(16) DEFAULT 'single'",
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"ALTER TABLE token_bindings ADD COLUMN IF NOT EXISTS allowed_ips JSONB DEFAULT '[]'::jsonb",
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"UPDATE token_bindings SET binding_mode = 'single' WHERE binding_mode IS NULL OR binding_mode = ''",
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"""
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UPDATE token_bindings
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SET allowed_ips = jsonb_build_array(bound_ip)
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WHERE allowed_ips IS NULL OR allowed_ips = '[]'::jsonb
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""",
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"ALTER TABLE token_bindings ALTER COLUMN binding_mode SET NOT NULL",
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"ALTER TABLE token_bindings ALTER COLUMN allowed_ips SET NOT NULL",
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"ALTER TABLE token_bindings ALTER COLUMN binding_mode SET DEFAULT 'single'",
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"ALTER TABLE token_bindings ALTER COLUMN allowed_ips SET DEFAULT '[]'::jsonb",
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"CREATE INDEX IF NOT EXISTS idx_token_bindings_ip ON token_bindings(bound_ip)",
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]
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async with engine.begin() as connection:
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for statement in statements:
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await connection.execute(text(statement))
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async def close_db() -> None:
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global _engine, _session_factory
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if _engine is not None:
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await _engine.dispose()
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_engine = None
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_session_factory = None
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