Make querying mongo DB async #169
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- Use the async connection from PyMongo - Manage connections in a lifespan manager. This ensures each worker gets an own AsyncPyMongoClient object - Adapt code to be async
- Some debug code to override the used mongo collection slipped through. Removed
bilalebi
requested changes
Jun 12, 2025
| return self | ||
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| async def __aexit__(self, *args): | ||
| print("DB exit") |
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| print("DB exit") | |
| print("DB exit") | |
| await self.close() |
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| @contextlib.asynccontextmanager | ||
| async def lifespan(app: Starlette) -> AsyncIterator[State]: | ||
| async with MongoDbClient(os.environ) as client: |
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| async with MongoDbClient(os.environ) as client: | |
| try: | |
| async with MongoDbClient(os.environ) as client: | |
| logger.info("Lifespan start: MongoDbClient connected") | |
| yield {"db_client": client} | |
| logger.info("Lifespan end: MongoDbClient closing") | |
| except Exception as exc: | |
| logger.error("Error during lifespan: %s", exc, exc_info=True) | |
| raise |
| print("DB enter") | ||
| await self | ||
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| host = self.config.get("MONGO_HOST").split(",") |
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| host = self.config.get("MONGO_HOST").split(",") | |
| try: | |
| host = self.config.get("MONGO_HOST").split(",") | |
| port = int(self.config.get("MONGO_PORT")) | |
| user = self.config.get("MONGO_USER") | |
| password = self.config.get("MONGO_PASSWORD") | |
| client = AsyncMongoClient( | |
| host=host, | |
| port=port, | |
| username=user, | |
| password=password, | |
| ) | |
| self.mongo_client = client | |
| await client.aconnect() | |
| logger.info("Successfully connected to MongoDB at %s:%s", host, port) | |
| return self | |
| except Exception as exc: | |
| logger.error("Failed to connect to MongoDB at %s:%s - %s", host, port, exc, exc_info=True) | |
| raise RuntimeError(f"Could not connect to MongoDB at {host}:{port}") from exc |
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Use async PyMongo
Use lifecycle to have a PyMongo object per worker
Make app async throughout