kochab/examples/ratelimiting.rs

use std::time::Duration;

use anyhow::*;
use futures_core::future::BoxFuture;
use futures_util::FutureExt;
use log::LevelFilter;
use northstar::{Server, Request, Response, GEMINI_PORT, Document};

#[tokio::main]
async fn main() -> Result<()> {
    env_logger::builder()
        .filter_module("northstar", LevelFilter::Debug)
        .init();

    Server::bind(("localhost", GEMINI_PORT))
        .add_route("/", handle_request)
        .ratelimit("/limit", 2, Duration::from_secs(60))
        .serve()
        .await
}

fn handle_request(request: Request) -> BoxFuture<'static, Result<Response>> {
    async move {
        let mut document = Document::new();

        if let Some("limit") = request.trailing_segments().get(0).map(String::as_str) {
            document.add_text("You're on a rate limited page!")
                    .add_text("You can only access this page twice per minute");
        } else {
            document.add_text("You're on a normal page!")
                    .add_text("You can access this page as much as you like.");
        }
        document.add_blank_line()
                .add_link("/limit", "Go to rate limited page")
                .add_link("/", "Go to a page that's not rate limited");
        Ok(Response::document(document))
    }
    .boxed()
}