Bolt for Python: AWS App Runner Example

app.py

import os

import logging
logging.basicConfig(level=logging.DEBUG)

# -----------------------------
#  Bolt app
# -----------------------------

from slack_bolt.async_app import AsyncApp

app = AsyncApp(
    token=os.environ["SLACK_BOT_TOKEN"],
    signing_secret=os.environ["SLACK_SIGNING_SECRET"],
)

@app.event("app_mention")
async def hello(event, say):
    await say(f"Hey <@{event['user']}>!")

# -----------------------------
#  Web app & server
# -----------------------------

import uvicorn
from fastapi import FastAPI, Request, Response
from slack_bolt.adapter.fastapi.async_handler import AsyncSlackRequestHandler

api = FastAPI()
handler = AsyncSlackRequestHandler(app)

@api.get("/")
async def root(req: Request):
    return Response(status_code=200, content="OK")

@api.post("/slack/events")
async def slack_events(req: Request):
    return await handler.handle(req)

# python3 app.py
if __name__ == "__main__":
    uvicorn.run(
        "app:api",
        host="0.0.0.0",
        port=int(os.environ.get("PORT", 8000)),
    )

apprunner.yaml

version: 1.0
runtime: python3
build:
  commands:
    build:
      - pip install -r requirements.txt
    # Using the admin console to set these variables would be recommended
    env:
      - name: SLACK_BOT_TOKEN
        value: "xoxb-"
      - name: SLACK_SIGNING_SECRET
        value: ""
run:
  command: python app.py
  network:
    port: 8000

Dockerfile

# https://gallery.ecr.aws/e5d9f5q7/aws-app-runner-bolt-python
FROM python:3.9.5-slim-buster
EXPOSE 8000
WORKDIR /app/
COPY requirements.txt /app/
COPY app.py /app/
RUN pip install -r requirements.txt
CMD python /app/app.py

requirements.txt

slack-bolt>=1.6,<2
aiohttp>=3,<4
fastapi>=0.65.1,<0.66
uvicorn>=0.13.4,<0.14