Created
February 6, 2021 19:49
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| use actix_web::{web, App, HttpResponse, Responder,HttpServer,middleware}; | |
| use serde::{ Serialize}; | |
| use std::cell::Cell; | |
| use std::sync::atomic::{AtomicUsize, Ordering}; | |
| use std::sync::{Arc, Mutex}; | |
| pub struct MessageApp { | |
| host: String, | |
| port: u16, | |
| } | |
| #[derive(Serialize)] | |
| struct IndexResponse { | |
| server_id: usize, | |
| request_count: usize, | |
| messages: Vec<String>, | |
| } | |
| struct AppState { | |
| server_id: usize, | |
| request_count: Cell<usize>, | |
| messages: Arc<Mutex<Vec<String>>>, | |
| } | |
| static SERVER_COUNTER: AtomicUsize = AtomicUsize::new(0); | |
| pub fn index(state: web::Data<Mutex<AppState>>) -> impl Responder { | |
| let state = state.lock().unwrap(); | |
| let request_count = state.request_count.get() + 1; | |
| state.request_count.set(request_count); | |
| let ms = state.messages.lock().unwrap(); | |
| HttpResponse::Ok().json(IndexResponse { | |
| server_id: state.server_id, | |
| request_count, | |
| messages: ms.clone(), | |
| }) | |
| } | |
| impl MessageApp { | |
| pub fn new(host: String, port: u16) -> Self { | |
| MessageApp { host, port } | |
| } | |
| pub async fn run(&self) -> std::io::Result<()> { | |
| println!("Starting http server: {}:{}", self.host, self.port); | |
| let messages = Arc::new(Mutex::new(vec![])); | |
| HttpServer::new(move || { | |
| App::new() | |
| // .service( | |
| // web::scope("/app/messages") | |
| // .wrap(middleware::Logger::default()) | |
| // .route("/", web::get().to(MessageApp::index)), | |
| // ) | |
| .data(AppState { | |
| server_id: SERVER_COUNTER.fetch_add(1, Ordering::SeqCst), | |
| request_count: Cell::new(0), | |
| messages: messages.clone(), | |
| }) | |
| .wrap(middleware::Logger::default()) | |
| .service(web::resource("/").route(web::get().to(index))) | |
| }) | |
| .workers(8) | |
| .bind((self.host.clone(), self.port))? | |
| .run() | |
| .await | |
| } | |
| } |
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