mini-serve 0.9.0

An HTTP server: trie router, middleware, CORS, optional TLS. Built on hyper + tokio.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102

use hyper::StatusCode;
use mini_serve::{handler, Handler, Middleware, RouteBuilder};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;

fn logging_middleware(flag: Arc<AtomicBool>) -> Middleware<()> {
	Arc::new(move |inner: Handler<()>| {
		let flag = Arc::clone(&flag);
		Arc::new(move |req, state| {
			flag.store(true, Ordering::SeqCst);
			let inner = Arc::clone(&inner);
			Box::pin(async move { inner(req, state).await })
		})
	})
}

fn blocking_middleware() -> Middleware<()> {
	Arc::new(|_inner: Handler<()>| {
		handler(|_req, _state| async {
			mini_serve::json(StatusCode::FORBIDDEN, &serde_json::json!({"blocked": true}))
		})
	})
}

#[tokio::test]
async fn middleware_runs_before_handler() {
	let flag = Arc::new(AtomicBool::new(false));

	let app = RouteBuilder::stateless()
		.wrap(logging_middleware(Arc::clone(&flag)))
		.get("/", handler(|_req, _state| async {
			mini_serve::json(StatusCode::OK, &serde_json::json!({"ok": true}))
		}))
		.seal();

	let port = app.bind_ephemeral().await.expect("failed to bind");
	tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;

	assert!(!flag.load(Ordering::SeqCst), "middleware should not have run yet");

	let resp = reqwest::get(&format!("http://127.0.0.1:{}/", port))
		.await
		.expect("request failed");

	assert_eq!(resp.status(), StatusCode::OK);
	assert!(flag.load(Ordering::SeqCst), "middleware should have run before the handler");
}

#[tokio::test]
async fn middleware_can_short_circuit_and_never_call_inner() {
	let inner_called = Arc::new(AtomicBool::new(false));
	let inner_called_clone = Arc::clone(&inner_called);

	let app = RouteBuilder::stateless()
		.wrap(blocking_middleware())
		.get("/", handler(move |_req, _state| {
			let inner_called = Arc::clone(&inner_called_clone);
			async move {
				inner_called.store(true, Ordering::SeqCst);
				mini_serve::json(StatusCode::OK, &serde_json::json!({"ok": true}))
			}
		}))
		.seal();

	let port = app.bind_ephemeral().await.expect("failed to bind");
	tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;

	let resp = reqwest::get(&format!("http://127.0.0.1:{}/", port))
		.await
		.expect("request failed");

	assert_eq!(resp.status(), StatusCode::FORBIDDEN);
	assert!(!inner_called.load(Ordering::SeqCst), "inner handler must never run when blocked");
}

#[tokio::test]
async fn routes_registered_before_wrap_are_unaffected() {
	let flag = Arc::new(AtomicBool::new(false));

	let app = RouteBuilder::stateless()
		.get("/unwrapped", handler(|_req, _state| async {
			mini_serve::json(StatusCode::OK, &serde_json::json!({"ok": true}))
		}))
		.wrap(logging_middleware(Arc::clone(&flag)))
		.get("/wrapped", handler(|_req, _state| async {
			mini_serve::json(StatusCode::OK, &serde_json::json!({"ok": true}))
		}))
		.seal();

	let port = app.bind_ephemeral().await.expect("failed to bind");
	tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;

	reqwest::get(&format!("http://127.0.0.1:{}/unwrapped", port))
		.await
		.expect("request failed");
	assert!(!flag.load(Ordering::SeqCst), "middleware registered after this route should not apply to it");

	reqwest::get(&format!("http://127.0.0.1:{}/wrapped", port))
		.await
		.expect("request failed");
	assert!(flag.load(Ordering::SeqCst), "middleware should apply to routes registered after .wrap()");
}