Improve the axum entry (TechEmpower#8014)

* axum: Upgrade dependencies

* axum: Remove identity cast

* axum: Use state instead of extensions

… and order / group / merge imports consistently.

* axum: Use str::parse instead of invoking FromStr directly

* axum: Use implicit format-args captures

frameworks/Rust/axum/Cargo.toml

@@ -47,10 +47,9 @@ tokio-pg-mapper = "0.2.0"
 tokio-pg-mapper-derive = "0.2.0"
 tokio-postgres = "0.7.7"
 tower = { version = "0.4.13", features = ["util"] }
-tower-http = { version = "0.3.5", features = ["set-header"] }
+tower-http = { version = "0.4.0", features = ["set-header"] }
 yarte = "0.15.7"
 
-
 [profile.release]
 lto = true
-codegen-units = 1
+codegen-units = 1

frameworks/Rust/axum/src/database_mongo.rs

@@ -1,34 +1,22 @@
-use axum::async_trait;
-use axum::extract::{Extension, FromRequestParts};
-use axum::http::request::Parts;
-use axum::http::StatusCode;
-use futures_util::stream::FuturesUnordered;
-use futures_util::TryStreamExt;
-use std::io;
-
-use crate::utils::internal_error;
+use std::{convert::Infallible, io};
+
+use axum::{async_trait, extract::FromRequestParts, http::request::Parts};
+use futures_util::{stream::FuturesUnordered, StreamExt, TryStreamExt};
+use mongodb::{bson::doc, Database};
+
 use crate::{Fortune, World};
-use futures_util::StreamExt;
-use mongodb::bson::doc;
-use mongodb::Database;
 
 pub struct DatabaseConnection(pub Database);
 
 #[async_trait]
-impl<S> FromRequestParts<S> for DatabaseConnection
-where
-    S: Send + Sync,
-{
-    type Rejection = (StatusCode, String);
+impl FromRequestParts<Database> for DatabaseConnection {
+    type Rejection = Infallible;
+
     async fn from_request_parts(
-        parts: &mut Parts,
-        state: &S,
+        _parts: &mut Parts,
+        db: &Database,
     ) -> Result<Self, Self::Rejection> {
-        let Extension(db) = Extension::<Database>::from_request_parts(parts, state)
-            .await
-            .map_err(internal_error)?;
-
-        Ok(Self(db))
+        Ok(Self(db.clone()))
     }
 }
 

frameworks/Rust/axum/src/database_mongo_raw.rs

@@ -1,34 +1,25 @@
-use axum::async_trait;
-use axum::extract::{Extension, FromRequestParts};
-use axum::http::request::Parts;
-use axum::http::StatusCode;
-use futures_util::stream::FuturesUnordered;
-use futures_util::TryStreamExt;
-use std::io;
-
-use crate::utils::internal_error;
+use std::{convert::Infallible, io};
+
+use axum::{async_trait, extract::FromRequestParts, http::request::Parts};
+use futures_util::{stream::FuturesUnordered, TryStreamExt};
+use mongodb::{
+    bson::{doc, RawDocumentBuf},
+    Database,
+};
+
 use crate::World;
-use mongodb::bson::{doc, RawDocumentBuf};
-use mongodb::Database;
 
 pub struct DatabaseConnection(pub Database);
 
 #[async_trait]
-impl<S> FromRequestParts<S> for DatabaseConnection
-where
-    S: Send + Sync,
-{
-    type Rejection = (StatusCode, String);
+impl FromRequestParts<Database> for DatabaseConnection {
+    type Rejection = Infallible;
 
     async fn from_request_parts(
-        parts: &mut Parts,
-        state: &S,
+        _parts: &mut Parts,
+        db: &Database,
     ) -> Result<Self, Self::Rejection> {
-        let Extension(db) = Extension::<Database>::from_request_parts(parts, state)
-            .await
-            .map_err(internal_error)?;
-
-        Ok(Self(db))
+        Ok(Self(db.clone()))
     }
 }
 

frameworks/Rust/axum/src/database_pg.rs

@@ -1,18 +1,14 @@
-use axum::async_trait;
-use axum::extract::{Extension, FromRequestParts};
-use axum::http::request::Parts;
-use axum::http::StatusCode;
+use std::{collections::HashMap, convert::Infallible, fmt::Write, io, sync::Arc};
+
+use axum::{async_trait, extract::FromRequestParts, http::request::Parts};
 use futures::{
     stream::futures_unordered::FuturesUnordered, FutureExt, StreamExt, TryStreamExt,
 };
 use rand::{rngs::SmallRng, thread_rng, Rng, SeedableRng};
-use std::sync::Arc;
-use std::{collections::HashMap, fmt::Write, io};
 use tokio::pin;
 use tokio_postgres::{connect, types::ToSql, Client, NoTls, Statement};
 
 use crate::models_pg::{Fortune, World};
-use crate::utils::internal_error;
 
 #[derive(Debug)]
 pub enum PgError {
@@ -49,7 +45,7 @@ impl PgConnection {
         // Spawn connection
         tokio::spawn(async move {
             if let Err(error) = conn.await {
-                eprintln!("Connection error: {}", error);
+                eprintln!("Connection error: {error}");
             }
         });
 
@@ -63,14 +59,14 @@ impl PgConnection {
             q.push_str("UPDATE world SET randomnumber = CASE id ");
 
             for _ in 1..=num {
-                let _ = write!(q, "when ${} then ${} ", pl, pl + 1);
+                let _ = write!(q, "when ${pl} then ${} ", pl + 1);
                 pl += 2;
             }
 
             q.push_str("ELSE randomnumber END WHERE id IN (");
 
             for _ in 1..=num {
-                let _ = write!(q, "${},", pl);
+                let _ = write!(q, "${pl},");
                 pl += 1;
             }
 
@@ -191,21 +187,13 @@ impl PgConnection {
 pub struct DatabaseConnection(pub Arc<PgConnection>);
 
 #[async_trait]
-impl<S> FromRequestParts<S> for DatabaseConnection
-where
-    S: Send + Sync,
-{
-    type Rejection = (StatusCode, String);
+impl FromRequestParts<Arc<PgConnection>> for DatabaseConnection {
+    type Rejection = Infallible;
 
     async fn from_request_parts(
-        parts: &mut Parts,
-        state: &S,
+        _parts: &mut Parts,
+        pg_connection: &Arc<PgConnection>,
     ) -> Result<Self, Self::Rejection> {
-        let Extension(pg_connection) =
-            Extension::<Arc<PgConnection>>::from_request_parts(parts, state)
-                .await
-                .map_err(internal_error)?;
-
-        Ok(Self(pg_connection))
+        Ok(Self(pg_connection.clone()))
     }
 }

frameworks/Rust/axum/src/database_pg_pool.rs

@@ -1,15 +1,15 @@
-use axum::async_trait;
-use axum::extract::{Extension, FromRequestParts};
-use axum::http::request::Parts;
-use axum::http::StatusCode;
-use deadpool_postgres::{Client, Manager, ManagerConfig, RecyclingMethod};
 use std::io;
-use std::str::FromStr;
+
+use axum::{
+    async_trait,
+    extract::FromRequestParts,
+    http::{request::Parts, StatusCode},
+};
+use deadpool_postgres::{Client, Manager, ManagerConfig, RecyclingMethod};
 use tokio_pg_mapper::FromTokioPostgresRow;
 use tokio_postgres::{NoTls, Row, Statement};
 
-use crate::utils::internal_error;
-use crate::{Fortune, World};
+use crate::{utils::internal_error, Fortune, World};
 
 #[derive(Debug)]
 pub enum PgError {
@@ -33,8 +33,8 @@ pub async fn create_pool(
     database_url: String,
     max_pool_size: u32,
 ) -> deadpool_postgres::Pool {
-    let pg_config =
-        tokio_postgres::Config::from_str(&database_url).expect("invalid database url");
+    let pg_config: tokio_postgres::Config =
+        database_url.parse().expect("invalid database url");
 
     let mgr_config = ManagerConfig {
         recycling_method: RecyclingMethod::Fast,
@@ -51,21 +51,13 @@ pub async fn create_pool(
 pub struct DatabaseClient(pub Client);
 
 #[async_trait]
-impl<S> FromRequestParts<S> for DatabaseClient
-where
-    S: Send + Sync,
-{
+impl FromRequestParts<deadpool_postgres::Pool> for DatabaseClient {
     type Rejection = (StatusCode, String);
 
     async fn from_request_parts(
-        parts: &mut Parts,
-        state: &S,
+        _parts: &mut Parts,
+        pool: &deadpool_postgres::Pool,
     ) -> Result<Self, Self::Rejection> {
-        let Extension(pool) =
-            Extension::<deadpool_postgres::Pool>::from_request_parts(parts, state)
-                .await
-                .map_err(internal_error)?;
-
         let conn = pool.get().await.map_err(internal_error)?;
 
         Ok(Self(conn))

frameworks/Rust/axum/src/database_sqlx.rs

@@ -1,14 +1,17 @@
-use axum::async_trait;
-use axum::extract::{Extension, FromRequestParts};
-use axum::http::request::Parts;
-use axum::http::StatusCode;
 use std::io;
 
-use crate::utils::internal_error;
-use crate::{Fortune, World};
-use sqlx::pool::PoolConnection;
-use sqlx::postgres::{PgArguments, PgPoolOptions};
-use sqlx::{Arguments, PgPool, Postgres};
+use axum::{
+    async_trait,
+    extract::FromRequestParts,
+    http::{request::Parts, StatusCode},
+};
+use sqlx::{
+    pool::PoolConnection,
+    postgres::{PgArguments, PgPoolOptions},
+    Arguments, PgPool, Postgres,
+};
+
+use crate::{utils::internal_error, Fortune, World};
 
 #[derive(Debug)]
 pub enum PgError {
@@ -44,19 +47,13 @@ pub async fn create_pool(
 pub struct DatabaseConnection(pub PoolConnection<Postgres>);
 
 #[async_trait]
-impl<S> FromRequestParts<S> for DatabaseConnection
-where
-    S: Send + Sync,
-{
+impl FromRequestParts<PgPool> for DatabaseConnection {
     type Rejection = (StatusCode, String);
+
     async fn from_request_parts(
-        parts: &mut Parts,
-        state: &S,
+        _parts: &mut Parts,
+        pool: &PgPool,
     ) -> Result<Self, Self::Rejection> {
-        let Extension(pool) = Extension::<PgPool>::from_request_parts(parts, state)
-            .await
-            .map_err(internal_error)?;
-
         let conn = pool.acquire().await.map_err(internal_error)?;
 
         Ok(Self(conn))

frameworks/Rust/axum/src/main.rs

@@ -1,15 +1,16 @@
+use axum::{
+    http::{header, HeaderValue, StatusCode},
+    response::IntoResponse,
+    routing::get,
+    Json, Router,
+};
+use dotenv::dotenv;
+use tower_http::set_header::SetResponseHeaderLayer;
+
 mod models_common;
 mod server;
 
-use models_common::Message;
-
-use axum::http::StatusCode;
-use axum::http::{header, HeaderValue};
-use axum::response::IntoResponse;
-use axum::Json;
-use axum::{routing::get, Router};
-use dotenv::dotenv;
-use tower_http::set_header::SetResponseHeaderLayer;
+use self::models_common::Message;
 
 pub async fn plaintext() -> &'static str {
     "Hello, World!"