Middleware

Middleware is a useful tool for logging, validation, and more. You can easily register your own middleware using the app.use method.

Below is an example of a middleware that will log the elapse time of all handers that come after it.

@app.use
async def log_activity(ctx: ActivityContext[MessageActivity]):
    started_at = datetime.now()
    await ctx.next()
    ctx.logger.debug(f"{datetime.now() - started_at}")