Mangum

Mangum is an adapter for using ASGI applications with AWS Lambda & API Gateway. It is intended to provide an easy-to-use, configurable wrapper for any ASGI application deployed in an AWS Lambda function to handle API Gateway requests and responses.

Documentation: https://mangum.io/

Features

• API Gateway support for HTTP, REST, and WebSocket APIs.

• Multiple storage backend interfaces for managing WebSocket connections.

• Compatibility with ASGI application frameworks, such as Starlette, FastAPI, and Quart.

• Support for binary media types and payload compression in API Gateway using GZip or Brotli.

• Works with existing deployment and configuration tools, including Serverless Framework and AWS SAM.

• Startup and shutdown lifespan events.

Requirements

Python 3.6+

Installation

pip install mangum

Example

from mangum import Mangum

async def app(scope, receive, send):
    await send(
        {
            "type": "http.response.start",
            "status": 200,
            "headers": [[b"content-type", b"text/plain; charset=utf-8"]],
        }
    )
    await send({"type": "http.response.body", "body": b"Hello, world!"})


handler = Mangum(app)

Or using a framework.

from fastapi import FastAPI
from mangum import Mangum

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}

handler = Mangum(app)