Hands-On Microservices with Rust

App creation

Insert the following code into a closure of the server::new function call:

let app = App::with_state(State::default())    .middleware(middleware::Logger::default())    .middleware(IdentityService::new(            CookieIdentityPolicy::new(&[0; 32])            .name("auth-example")            .secure(false),            ))    .middleware(Counter);

The App struct contains information about the state, middleware, and the scopes of routes. To set shared state to our application, we use the with_state method to construct the App instance. We create a default instance of the State struct, which is declared as follows:

#[derive(Default)]struct State(RefCell<i64>);

State contains a cell with an i64 value to count all requests. By default, it is created with a 0 value.

After this, we use ...