Add postgres adapter

services:

  postgres:

    image: postgres:16-alpine

    container_name: fm-postgres

    environment:

      POSTGRES_USER: fm

      POSTGRES_PASSWORD: fm

      POSTGRES_DB: fm_db

    ports:

      - "5433:5432"

    healthcheck:

      test: ["CMD-SHELL", "pg_isready -U fm -d fm_db"]

      interval: 3s

      timeout: 3s

      retries: 20

    volumes:

      - fm-pgdata:/var/lib/postgresql/data

volumes:

  fm-pgdata:

readme = "README.md"

requires-python = ">=3.12"

dependencies = [

    "asyncpg>=0.30",

    "fastapi[standard]>=0.115",

    "pydantic-settings>=2.4",

    "sqlalchemy[asyncio]>=2.0",

]

[project.optional-dependencies]

testpaths = ["tests"]

asyncio_mode = "auto"

pythonpath = ["."]

markers = [

    "integration: requires a running Postgres (docker compose -f docker-compose.dev.yaml up -d)",

]

from sqlalchemy.ext.asyncio import (

    AsyncEngine,

    AsyncSession,

    async_sessionmaker,

    create_async_engine,

)

from federation_manager.adapters.database.tables import metadata

def build_engine(url: str, echo: bool = False) -> AsyncEngine:

    return create_async_engine(url, echo=echo)

def build_session_maker(engine: AsyncEngine) -> async_sessionmaker[AsyncSession]:

    return async_sessionmaker(engine, expire_on_commit=False)

async def create_schema(engine: AsyncEngine) -> None:

    async with engine.begin() as conn:

        await conn.run_sync(metadata.create_all)