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// Copied from https://raw.githubusercontent.com/seanmonstar/reqwest/v0.12.0/tests/support/server.rs
// with some slight tweaks
use std::convert::Infallible;
use std::future::Future;
use std::net;
use std::sync::mpsc as std_mpsc;
use std::sync::{Arc, Mutex};
use std::thread;
use std::time::Duration;
use http_body_util::Full;
use hyper::body::Bytes;
use hyper::service::service_fn;
use hyper::{Request, Response};
use tokio::runtime;
use tokio::sync::oneshot;
type Body = Full<Bytes>;
type Builder = hyper_util::server::conn::auto::Builder<hyper_util::rt::TokioExecutor>;
pub struct Server {
addr: net::SocketAddr,
panic_rx: std_mpsc::Receiver<()>,
successful_hits: Arc<Mutex<u8>>,
total_hits: Arc<Mutex<u8>>,
no_hit_checks: bool,
shutdown_tx: Option<oneshot::Sender<()>>,
}
impl Server {
pub fn base_url(&self) -> String {
format!("http://{}", self.addr)
}
pub fn url(&self, path: &str) -> String {
format!("http://{}{}", self.addr, path)
}
pub fn host(&self) -> String {
String::from("127.0.0.1")
}
pub fn port(&self) -> u16 {
self.addr.port()
}
pub fn assert_hits(&self, hits: u8) {
assert_eq!(*self.successful_hits.lock().unwrap(), hits);
}
pub fn disable_hit_checks(&mut self) {
self.no_hit_checks = true;
}
}
impl Drop for Server {
fn drop(&mut self) {
if let Some(tx) = self.shutdown_tx.take() {
let _ = tx.send(());
}
if !std::thread::panicking() && !self.no_hit_checks {
let total_hits = *self.total_hits.lock().unwrap();
let successful_hits = *self.successful_hits.lock().unwrap();
let failed_hits = total_hits - successful_hits;
assert!(total_hits > 0, "test server exited without being called");
assert_eq!(
failed_hits, 0,
"numbers of panicked or in-progress requests: {}",
failed_hits
);
}
if !std::thread::panicking() {
self.panic_rx
.recv_timeout(Duration::from_secs(3))
.expect("test server should not panic");
}
}
}
// http() is generic, http_inner() is not.
// A generic function has to be compiled for every single type you use it with.
// And every closure counts as a different type.
// By making only http() generic a rebuild of the tests take 3-10 times less long.
pub fn http<F, Fut>(func: F) -> Server
where
F: Fn(Request<hyper::body::Incoming>) -> Fut + Send + Sync + 'static,
Fut: Future<Output = Response<Body>> + Send + 'static,
{
http_inner(Arc::new(move |req| Box::new(Box::pin(func(req)))))
}
type Serv = dyn Fn(Request<hyper::body::Incoming>) -> Box<ServFut> + Send + Sync;
type ServFut = dyn Future<Output = Response<Body>> + Send + Unpin;
fn http_inner(func: Arc<Serv>) -> Server {
// Spawn new runtime in thread to prevent reactor execution context conflict
thread::spawn(move || {
let rt = runtime::Builder::new_current_thread()
.enable_all()
.build()
.expect("new rt");
let successful_hits = Arc::new(Mutex::new(0));
let total_hits = Arc::new(Mutex::new(0));
let listener = rt.block_on(async move {
tokio::net::TcpListener::bind(&std::net::SocketAddr::from(([127, 0, 0, 1], 0)))
.await
.unwrap()
});
let addr = listener.local_addr().unwrap();
let (shutdown_tx, shutdown_rx) = oneshot::channel();
let (panic_tx, panic_rx) = std_mpsc::channel();
let thread_name = format!(
"test({})-support-server",
thread::current().name().unwrap_or("<unknown>")
);
{
let successful_hits = successful_hits.clone();
let total_hits = total_hits.clone();
thread::Builder::new()
.name(thread_name)
.spawn(move || {
let task = rt.spawn(async move {
let builder = Builder::new(hyper_util::rt::TokioExecutor::new());
loop {
let svc = {
let func = func.clone();
let successful_hits = successful_hits.clone();
let total_hits = total_hits.clone();
service_fn(move |req| {
let successful_hits = successful_hits.clone();
let total_hits = total_hits.clone();
let fut = func(req);
async move {
*total_hits.lock().unwrap() += 1;
let res = fut.await;
*successful_hits.lock().unwrap() += 1;
Ok::<_, Infallible>(res)
}
})
};
let (io, _) = listener.accept().await.unwrap();
let builder = builder.clone();
tokio::spawn(async move {
let _ = builder
.serve_connection(hyper_util::rt::TokioIo::new(io), svc)
.await;
});
}
});
let _ = rt.block_on(shutdown_rx);
task.abort();
let _ = panic_tx.send(());
})
.expect("thread spawn");
}
Server {
addr,
panic_rx,
shutdown_tx: Some(shutdown_tx),
successful_hits,
total_hits,
no_hit_checks: false,
}
})
.join()
.unwrap()
}
|
