refactor following code from https://github.com/actix/examples/blob/master/simple-auth-server/ for app state

src/main.rs

@@ -71,7 +71,7 @@ fn main() {
     );
 
     let shared_config = Arc::new(config);
-    let actix_server = actix_web::server::new(server::router::factory(shared_config))
+    let actix_server = actix_web::server::new(move || server::router::create(shared_config.clone()))
         .workers(workers)
         .bind(bind);
 

src/server/api.rs

@@ -9,8 +9,9 @@ use bytes::{Buf, Bytes, IntoBuf};
 use futures::future::Future;
 
 use crate::server::error::APIError;
+use crate::server::router::AppState;
 
-pub fn route(scope: Scope<()>) -> Scope<()> {
+pub fn route(scope: Scope<AppState>) -> Scope<AppState> {
     scope.resource("address", |r| r.method(Method::GET).f(get_address))
         .nested("{root}/{zone}", |zone_scope| {
             zone_scope
@@ -44,7 +45,7 @@ fn parse_remote_info(remote_info: &str) -> Result<IpAddr, APIError> {
     }
 }
 
-fn get_address(req: &HttpRequest) -> HttpResponse {
+fn get_address(req: &HttpRequest<AppState>) -> HttpResponse {
     match req.connection_info().remote() {
         Some(remote_info) => {
             match parse_remote_info(remote_info) {
@@ -61,7 +62,7 @@ fn get_address(req: &HttpRequest) -> HttpResponse {
     }
 }
 
-fn update_address_automatically(req: &HttpRequest) -> HttpResponse {
+fn update_address_automatically(req: &HttpRequest<AppState>) -> HttpResponse {
     match req.connection_info().remote() {
         Some(remote_info) => {
             match parse_remote_info(remote_info) {
@@ -78,7 +79,7 @@ fn update_address_automatically(req: &HttpRequest) -> HttpResponse {
     }
 }
 
-fn update_address_manually(req: &HttpRequest) -> FutureResponse<HttpResponse> {
+fn update_address_manually(req: &HttpRequest<AppState>) -> FutureResponse<HttpResponse> {
     req.body()
         .limit(48)
         .from_err()

src/server/middleware/mod.rs

@@ -0,0 +1 @@
+pub mod api_auth;

src/server/mod.rs

@@ -1,5 +1,6 @@
 use actix_web::{HttpRequest, Json, Result};
 
+use crate::server::router::AppState;
 use crate::VERSION;
 
 pub mod api;
@@ -11,10 +12,10 @@ pub struct Health {
     version: &'static str,
 }
 
-pub fn index(_req: &HttpRequest) -> &'static str {
+pub fn index(_req: &HttpRequest<AppState>) -> &'static str {
     "Hello, World!"
 }
 
-pub fn healthcheck(_req: HttpRequest) -> Result<Json<Health>> {
+pub fn healthcheck(_req: HttpRequest<AppState>) -> Result<Json<Health>> {
     Ok(Json(Health { version: VERSION }))
 }

src/server/router.rs

@@ -8,15 +8,17 @@ use actix_web::middleware::Logger;
 use crate::config::model::Config;
 use crate::server;
 
-pub fn factory(config: Arc<Config>) -> impl Fn() -> App + Send + Clone {
-    || {
-        actix_web::App::new()
-            .middleware(Logger::default())
-            .scope("api/", server::api::route)
+pub struct AppState {
+    config: Arc<Config>
+}
+
+pub fn create(config: Arc<Config>) -> App<AppState> {
+    actix_web::App::with_state(AppState { config })
+        .middleware(Logger::default())
+        .scope("api/", server::api::route)
 //            .middleware()
-            .resource("/health", |r| {
-                r.method(http::Method::GET).with(server::healthcheck)
-            })
-            .resource("/", |r| r.f(server::index))
-    }
+        .resource("/health", |r| {
+            r.method(http::Method::GET).with(server::healthcheck)
+        })
+        .resource("/", |r| r.f(server::index))
 }