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https://github.com/grillazz/fastapi-sqlalchemy-asyncpg.git
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78 lines
2.7 KiB
Python
78 lines
2.7 KiB
Python
from contextlib import asynccontextmanager
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import asyncpg
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from apscheduler import AsyncScheduler
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from apscheduler.datastores.sqlalchemy import SQLAlchemyDataStore
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from apscheduler.eventbrokers.redis import RedisEventBroker
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from fastapi import Depends, FastAPI
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from app.api.health import router as health_router
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from app.api.nonsense import router as nonsense_router
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from app.api.shakespeare import router as shakespeare_router
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from app.api.stuff import router as stuff_router
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from app.api.user import router as user_router
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from app.api.ml import router as ml_router
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from app.config import settings as global_settings
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from app.database import engine
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from app.redis import get_redis
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from app.services.auth import AuthBearer
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from app.services.scheduler import SchedulerMiddleware
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from app.utils.logging import AppLogger
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logger = AppLogger().get_logger()
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@asynccontextmanager
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async def lifespan(_app: FastAPI):
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# Load the redis connection
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_app.redis = await get_redis()
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_postgres_dsn = global_settings.postgres_url.unicode_string()
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try:
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# TODO: cache with the redis connection
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# Initialize the postgres connection pool
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_app.postgres_pool = await asyncpg.create_pool(
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dsn=_postgres_dsn,
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min_size=5,
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max_size=20,
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)
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logger.info(f"Postgres pool created: {_app.postgres_pool.get_idle_size()=}")
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yield
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finally:
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# close redis connection and release the resources
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await _app.redis.close()
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# close postgres connection pool and release the resources
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await _app.postgres_pool.close()
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app = FastAPI(title="Stuff And Nonsense API", version="0.18.0", lifespan=lifespan)
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app.include_router(stuff_router)
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app.include_router(nonsense_router)
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app.include_router(shakespeare_router)
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app.include_router(user_router)
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app.include_router(ml_router, prefix="/v1/ml", tags=["ML"])
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app.include_router(health_router, prefix="/v1/public/health", tags=["Health, Public"])
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app.include_router(
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health_router,
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prefix="/v1/health",
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tags=["Health, Bearer"],
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dependencies=[Depends(AuthBearer())],
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)
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_scheduler_data_store = SQLAlchemyDataStore(engine, schema="scheduler")
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_scheduler_event_broker = RedisEventBroker(
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client_or_url=global_settings.redis_url.unicode_string()
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)
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_scheduler_himself = AsyncScheduler(_scheduler_data_store, _scheduler_event_broker)
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app.add_middleware(SchedulerMiddleware, scheduler=_scheduler_himself)
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# TODO: every not GET meth should reset cache
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# TODO: every scheduler task which needs to act on database should have access to connection pool via request - maybe ?
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# TODO: https://stackoverflow.com/questions/16053364/make-sure-only-one-worker-launches-the-apscheduler-event-in-a-pyramid-web-app-ru
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