fix juniper example

juniper/Cargo.toml

@@ -6,7 +6,8 @@ workspace = ".."
 edition = "2018"
 
 [dependencies]
-actix-web = "1.0.9"
+actix-web = "2.0.0-alpha.3"
+actix-rt = "1.0.0-alpha.3"
 env_logger = "0.7.1"
 serde = "1.0.103"
 serde_json = "1.0.44"

juniper/src/main.rs

@@ -15,27 +15,29 @@ mod schema;
 
 use crate::schema::{create_schema, Schema};
 
-fn graphiql() -> HttpResponse {
+async fn graphiql() -> HttpResponse {
     let html = graphiql_source("http://127.0.0.1:8080/graphql");
     HttpResponse::Ok()
         .content_type("text/html; charset=utf-8")
         .body(html)
 }
 
-fn graphql(
+async fn graphql(
     st: web::Data<Arc<Schema>>,
     data: web::Json<GraphQLRequest>,
 ) -> Result<HttpResponse, Error> {
+    let user = web::block(move || {
         let res = data.execute(&st, &());
-  let user = serde_json::to_string(&res)?;
+        Ok::<_, serde_json::error::Error>(serde_json::to_string(&res)?)
-  Ok(
+    })
-    HttpResponse::Ok()
+    .await?;
+    Ok(HttpResponse::Ok()
         .content_type("application/json")
-      .body(user)
+        .body(user))
-  )
 }
 
-fn main() -> io::Result<()> {
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
     std::env::set_var("RUST_LOG", "actix_web=info");
     env_logger::init();
 
@@ -47,9 +49,10 @@ fn main() -> io::Result<()> {
         App::new()
             .data(schema.clone())
             .wrap(middleware::Logger::default())
-      .service(web::resource("/graphql").route(web::post().to_async(graphql)))
+            .service(web::resource("/graphql").route(web::post().to(graphql)))
             .service(web::resource("/graphiql").route(web::get().to(graphiql)))
     })
     .bind("127.0.0.1:8080")?
-  .run()
+    .start()
+    .await
 }