add run-in-thread example

Cargo.toml

@@ -23,6 +23,7 @@ members = [
    "r2d2",
    "redis",
    "redis-session",
+   "run-in-thread",
    "rustls",
    "server-sent-events",
    "simple-auth-server",

run-in-thread/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "run-in-thread"
+version = "2.0.0"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+edition = "2018"
+description = "Run actix-web in separate thread"
+
+[dependencies]
+actix-web = "2.0.0-rc"
+actix-rt = "1.0.0"
+env_logger = "0.6"

run-in-thread/src/main.rs

@@ -0,0 +1,52 @@
+use std::sync::mpsc;
+use std::{thread, time};
+
+use actix_rt::System;
+use actix_web::{dev::Server, middleware, web, App, HttpRequest, HttpServer};
+
+async fn index(req: HttpRequest) -> &'static str {
+    println!("REQ: {:?}", req);
+    "Hello world!"
+}
+
+fn run_app(tx: mpsc::Sender<Server>) -> std::io::Result<()> {
+    let mut sys = System::new("test");
+
+    // srv is server controller type, `dev::Server`
+    let srv = HttpServer::new(|| {
+        App::new()
+            // enable logger
+            .wrap(middleware::Logger::default())
+            .service(web::resource("/index.html").to(|| async { "Hello world!" }))
+            .service(web::resource("/").to(index))
+    })
+    .bind("127.0.0.1:8080")?
+    .start();
+
+    // send server controller to main thread
+    let _ = tx.send(srv.clone());
+
+    // run future
+    sys.block_on(srv)
+}
+
+fn main() {
+    std::env::set_var("RUST_LOG", "actix_web=info,actix_server=trace");
+    env_logger::init();
+
+    let (tx, rx) = mpsc::channel();
+
+    println!("START SERVER");
+    thread::spawn(move || {
+        let _ = run_app(tx);
+    });
+
+    let srv = rx.recv().unwrap();
+
+    println!("WATING 10 SECONDS");
+    thread::sleep(time::Duration::from_secs(10));
+
+    println!("STOPPING SERVER");
+    // init stop server and wait until server gracefully exit
+    System::new("").block_on(srv.stop(true));
+}