graceful api shutdown (#3677)

api/tests/rest.rs

@@ -2,6 +2,7 @@ use grin_api as api;
 use grin_util as util;
 
 use crate::api::*;
+use futures::channel::oneshot;
 use hyper::{Body, Request, StatusCode};
 use std::net::SocketAddr;
 use std::sync::atomic::{AtomicUsize, Ordering};
@@ -71,7 +72,9 @@ fn test_start_api() {
 	router.add_middleware(counter.clone());
 	let server_addr = "127.0.0.1:14434";
 	let addr: SocketAddr = server_addr.parse().expect("unable to parse server address");
-	assert!(server.start(addr, router, None).is_ok());
+	let api_chan: &'static mut (oneshot::Sender<()>, oneshot::Receiver<()>) =
+		Box::leak(Box::new(oneshot::channel::<()>()));
+	assert!(server.start(addr, router, None, api_chan).is_ok());
 	let url = format!("http://{}/v1/", server_addr);
 	let index = request_with_retry(url.as_str()).unwrap();
 	assert_eq!(index.len(), 2);
@@ -96,7 +99,9 @@ fn test_start_api_tls() {
 	let router = build_router();
 	let server_addr = "0.0.0.0:14444";
 	let addr: SocketAddr = server_addr.parse().expect("unable to parse server address");
-	assert!(server.start(addr, router, Some(tls_conf)).is_ok());
+	let api_chan: &'static mut (oneshot::Sender<()>, oneshot::Receiver<()>) =
+		Box::leak(Box::new(oneshot::channel::<()>()));
+	assert!(server.start(addr, router, Some(tls_conf), api_chan).is_ok());
 	let index = request_with_retry("https://yourdomain.com:14444/v1/").unwrap();
 	assert_eq!(index.len(), 2);
 	assert!(!server.stop());