add redis session example

Cargo.toml

@@ -108,6 +108,7 @@ members = [
   "examples/hello-world",
   "examples/multipart",
   "examples/state",
+  "examples/redis-session",
   "examples/template_tera",
   "examples/tls",
   "examples/websocket",

examples/redis-session/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "redis-session"
+version = "0.1.0"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+workspace = "../.."
+
+[dependencies]
+env_logger = "0.5"
+actix = "0.5"
+actix-web = "0.4"
+actix-redis = { version = "0.2", features = ["web"] }

examples/redis-session/src/main.rs

@@ -0,0 +1,48 @@
+#![allow(unused_variables)]
+
+extern crate actix;
+extern crate actix_web;
+extern crate actix_redis;
+extern crate env_logger;
+
+use actix_web::*;
+use actix_web::middleware::RequestSession;
+use actix_redis::RedisSessionBackend;
+
+
+/// simple handler
+fn index(mut req: HttpRequest) -> Result<HttpResponse> {
+    println!("{:?}", req);
+
+    // session
+    if let Some(count) = req.session().get::<i32>("counter")? {
+        println!("SESSION value: {}", count);
+        req.session().set("counter", count+1)?;
+    } else {
+        req.session().set("counter", 1)?;
+    }
+
+    Ok("Welcome!".into())
+}
+
+fn main() {
+    ::std::env::set_var("RUST_LOG", "actix_web=info,actix_redis=info");
+    env_logger::init();
+    let sys = actix::System::new("basic-example");
+
+    HttpServer::new(
+        || Application::new()
+            // enable logger
+            .middleware(middleware::Logger::default())
+            // cookie session middleware
+            .middleware(middleware::SessionStorage::new(
+                RedisSessionBackend::new("127.0.0.1:6379", &[0; 32])
+            ))
+            // register simple route, handle all methods
+            .resource("/", |r| r.f(index)))
+        .bind("0.0.0.0:8080").unwrap()
+        .threads(1)
+        .start();
+
+    let _ = sys.run();
+}