Small web service for mocking webhooks. Logs all incoming requests. Useful for testing systems that send out notifications. Make system under test send its notifications to this web service and validate the messages on its GET endpoints.

WebhookMock.py

from fastapi import FastAPI, Response, Request
import json
from json import JSONDecodeError

app = FastAPI()

webhook_call = {}


@app.get('/all')
async def get_all():
    return webhook_call


@app.delete('/all', status_code=204)
async def delete_all():
    webhook_call.clear()
    return ''


@app.get('/')
async def index():
    return "Hello Webhook!"


@app.get('/{endpoint:path}')
async def main(endpoint, response: Response):
    try:
        return webhook_call[endpoint]
    except KeyError as identifier:
        response.status_code = 404
        return 'No Payload for this App'


@app.post('/{endpoint:path}', status_code=201)
async def post(endpoint, request: Request):
    body = await request.body()
    message = body.decode('utf-8')
    try:
        message = json.loads(message)
    except JSONDecodeError:
      pass
    try:
        webhook_call[endpoint].append(message)
    except KeyError:
        webhook_call[endpoint] = []
        webhook_call[endpoint].append(message)
    return message


@app.delete('/{endpoint:path}', status_code=204)
async def delete_endpoint_data(endpoint=None):
    if endpoint in webhook_call.keys():#
        del webhook_call[endpoint]
    return ''


if __name__ == '__main__':
    import uvicorn
    uvicorn.run("WebhookMock:app", host='0.0.0.0', port=8000, debug=True, reload=True)