group imports

auth/casbin/src/main.rs

@@ -1,8 +1,8 @@
-use casbin::{CoreApi, DefaultModel, Enforcer, FileAdapter, RbacApi};
 use std::io;
-use tokio::sync::RwLock;
 
 use actix_web::{middleware, web, App, HttpRequest, HttpResponse, HttpServer};
+use casbin::{CoreApi, DefaultModel, Enforcer, FileAdapter, RbacApi};
+use tokio::sync::RwLock;
 
 /// simple handle
 async fn success(enforcer: web::Data<RwLock<Enforcer>>, req: HttpRequest) -> HttpResponse {

auth/redis-session/src/main.rs

@@ -100,7 +100,6 @@ async fn main() -> std::io::Result<()> {
 
 #[cfg(test)]
 mod test {
-    use super::*;
     use actix_web::{
         middleware,
         web::{get, post, resource},
@@ -108,6 +107,8 @@ mod test {
     };
     use serde_json::json;
 
+    use super::*;
+
     #[actix_web::test]
     async fn test_workflow() {
         let private_key = actix_web::cookie::Key::generate();

auth/simple-auth-server/src/email_service.rs

@@ -1,10 +1,9 @@
-// email_service.rs
-use crate::errors::ServiceError;
-use crate::models::Invitation;
 use sparkpost::transmission::{
     EmailAddress, Message, Options, Recipient, Transmission, TransmissionResponse,
 };
 
+use crate::{errors::ServiceError, models::Invitation};
+
 lazy_static::lazy_static! {
 static ref API_KEY: String = std::env::var("SPARKPOST_API_KEY").expect("SPARKPOST_API_KEY must be set");
 }

auth/simple-auth-server/src/errors.rs

@@ -1,7 +1,8 @@
+use std::convert::From;
+
 use actix_web::{error::ResponseError, HttpResponse};
 use derive_more::Display;
 use diesel::result::{DatabaseErrorKind, Error as DBError};
-use std::convert::From;
 use uuid::Error as ParseError;
 
 #[derive(Debug, Display)]

auth/simple-auth-server/src/models.rs

@@ -1,7 +1,8 @@
-use super::schema::*;
 use diesel::{r2d2::ConnectionManager, PgConnection};
 use serde::{Deserialize, Serialize};
 
+use super::schema::*;
+
 // type alias to use in multiple places
 pub type Pool = r2d2::Pool<ConnectionManager<PgConnection>>;
 

auth/simple-auth-server/src/utils.rs

@@ -1,6 +1,7 @@
-use crate::errors::ServiceError;
 use argon2::{self, Config};
 
+use crate::errors::ServiceError;
+
 lazy_static::lazy_static! {
     pub static ref SECRET_KEY: String = std::env::var("SECRET_KEY").unwrap_or_else(|_| "0123".repeat(8));
 }

basics/hello-world/src/main.rs

@@ -24,11 +24,12 @@ async fn main() -> std::io::Result<()> {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use actix_web::body::to_bytes;
     use actix_web::dev::Service;
     use actix_web::{http, test, web, App, Error};
 
+    use super::*;
+
     #[actix_web::test]
     async fn test_index() -> Result<(), Error> {
         let app = App::new().route("/", web::get().to(index));

basics/nested-routing/src/bin/main.rs

@@ -1,5 +1,4 @@
 use actix_web::{middleware, App, HttpServer};
-
 use nested_routing::app_config::config_app;
 
 #[actix_web::main]

basics/nested-routing/src/handlers/products.rs

@@ -20,13 +20,14 @@ pub async fn remove_product(_id: web::Path<String>) -> Result<HttpResponse, Erro
 
 #[cfg(test)]
 mod tests {
-    use crate::app_config::config_app;
-    use actix_web::dev::Service;
     use actix_web::{
+        dev::Service,
         http::{header, StatusCode},
         test, App,
     };
 
+    use crate::app_config::config_app;
+
     #[actix_web::test]
     async fn test_add_product() {
         let app = test::init_service(App::new().configure(config_app)).await;

data-factory/src/main.rs

@@ -1,6 +1,5 @@
 use actix_web::web::Data;
 use actix_web::{get, App, HttpServer};
-
 use redis_tang::{Builder, Pool, RedisManager};
 
 #[actix_web::main]

databases/mongodb/src/main.rs

@@ -5,9 +5,8 @@ mod model;
 mod test;
 
 use actix_web::{get, post, web, App, HttpResponse, HttpServer};
-use mongodb::{bson::doc, options::IndexOptions, Client, Collection, IndexModel};
-
 use model::User;
+use mongodb::{bson::doc, options::IndexOptions, Client, Collection, IndexModel};
 
 const DB_NAME: &str = "myApp";
 const COLL_NAME: &str = "users";

databases/postgres/src/main.rs

@@ -51,10 +51,11 @@ mod errors {
 }
 
 mod db {
-    use crate::{errors::MyError, models::User};
     use deadpool_postgres::Client;
     use tokio_pg_mapper::FromTokioPostgresRow;
 
+    use crate::{errors::MyError, models::User};
+
     pub async fn add_user(client: &Client, user_info: User) -> Result<User, MyError> {
         let _stmt = include_str!("../sql/add_user.sql");
         let _stmt = _stmt.replace("$table_fields", &User::sql_table_fields());
@@ -80,10 +81,11 @@ mod db {
 }
 
 mod handlers {
-    use crate::{db, errors::MyError, models::User};
     use actix_web::{web, Error, HttpResponse};
     use deadpool_postgres::{Client, Pool};
 
+    use crate::{db, errors::MyError, models::User};
+
     pub async fn add_user(
         user: web::Json<User>,
         db_pool: web::Data<Pool>,
@@ -98,13 +100,14 @@ mod handlers {
     }
 }
 
-use crate::config::ExampleConfig;
 use ::config::Config;
 use actix_web::{web, App, HttpServer};
 use dotenv::dotenv;
 use handlers::add_user;
 use tokio_postgres::NoTls;
 
+use crate::config::ExampleConfig;
+
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
     dotenv().ok();

databases/sqlite/src/db.rs

@@ -1,7 +1,8 @@
+use std::{thread::sleep, time::Duration};
+
 use actix_web::{error, web, Error};
 use rusqlite::Statement;
 use serde::{Deserialize, Serialize};
-use std::{thread::sleep, time::Duration};
 
 pub type Pool = r2d2::Pool<r2d2_sqlite::SqliteConnectionManager>;
 pub type Connection = r2d2::PooledConnection<r2d2_sqlite::SqliteConnectionManager>;

forms/form/src/main.rs

@@ -1,6 +1,5 @@
-use serde::{Deserialize, Serialize};
-
 use actix_web::{middleware, web, App, HttpRequest, HttpResponse, HttpServer, Responder, Result};
+use serde::{Deserialize, Serialize};
 
 struct AppState {
     foo: String,
@@ -71,13 +70,14 @@ async fn handle_post_3(req: HttpRequest, params: web::Form<MyParams>) -> impl Re
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use actix_web::body::to_bytes;
     use actix_web::dev::{Service, ServiceResponse};
     use actix_web::http::{header::HeaderValue, header::CONTENT_TYPE, StatusCode};
     use actix_web::test::{self, TestRequest};
     use actix_web::web::{Bytes, Form};
 
+    use super::*;
+
     trait BodyTest {
         fn as_str(&self) -> &str;
     }

forms/multipart-s3/src/utils/s3.rs

@@ -1,7 +1,7 @@
+use std::io::Read as _;
+
 use rusoto_core::Region;
-use rusoto_s3::S3;
-use rusoto_s3::{DeleteObjectRequest, PutObjectRequest, S3Client};
-use std::io::Read;
+use rusoto_s3::{DeleteObjectRequest, PutObjectRequest, S3Client, S3};
 
 pub struct Client {
     #[allow(dead_code)]

forms/multipart-s3/src/utils/upload.rs

@@ -1,10 +1,11 @@
-use crate::utils::s3::Client;
+use std::{convert::From, io::Write};
+
 use actix_multipart::{Field, Multipart};
 use actix_web::{web, web::Bytes, Error};
 use futures_util::StreamExt as _;
 use serde::{Deserialize, Serialize};
-use std::convert::From;
-use std::io::Write;
+
+use crate::utils::s3::Client;
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
 pub struct UploadFile {

graphql/juniper-advanced/src/schemas/root.rs

@@ -3,11 +3,12 @@ use juniper::{
 };
 use mysql::{from_row, params, Error as DBError, Row};
 
+use super::{
+    product::{Product, ProductInput},
+    user::{User, UserInput},
+};
 use crate::db::Pool;
 
-use super::product::{Product, ProductInput};
-use super::user::{User, UserInput};
-
 pub struct Context {
     pub dbpool: Pool,
 }

json/json/src/main.rs

@@ -84,10 +84,9 @@ async fn main() -> std::io::Result<()> {
 
 #[cfg(test)]
 mod tests {
+    use actix_web::{body::to_bytes, dev::Service, http, test, web, App};
+
     use super::*;
-    use actix_web::body::to_bytes;
-    use actix_web::dev::Service;
-    use actix_web::{http, test, web, App};
 
     #[actix_web::test]
     async fn test_index() {

rustfmt.toml

@@ -1 +1,2 @@
 reorder_imports = true
+group_imports = "StdExternalCrate"

shutdown-server/src/main.rs

@@ -1,6 +1,7 @@
-use actix_web::{get, middleware, post, web, App, HttpResponse, HttpServer};
 use std::{sync::mpsc, thread};
 
+use actix_web::{get, middleware, post, web, App, HttpResponse, HttpServer};
+
 #[get("/hello")]
 async fn hello() -> &'static str {
     "Hello world!"

templating/handlebars/src/main.rs

@@ -1,12 +1,15 @@
-use actix_web::body::BoxBody;
-use actix_web::dev::ServiceResponse;
-use actix_web::http::header::ContentType;
-use actix_web::http::StatusCode;
-use actix_web::middleware::{ErrorHandlerResponse, ErrorHandlers};
-use actix_web::{get, web, App, HttpResponse, HttpServer, Result};
+use std::io;
+
+use actix_web::{
+    body::BoxBody,
+    dev::ServiceResponse,
+    get,
+    http::{header::ContentType, StatusCode},
+    middleware::{ErrorHandlerResponse, ErrorHandlers},
+    web, App, HttpResponse, HttpServer, Result,
+};
 use handlebars::Handlebars;
 use serde_json::json;
-use std::io;
 
 // Macro documentation can be found in the actix_web_codegen crate
 #[get("/")]

templating/tera/src/main.rs

@@ -1,10 +1,13 @@
-use actix_web::body::BoxBody;
-use actix_web::dev::ServiceResponse;
-use actix_web::http::header::ContentType;
-use actix_web::http::StatusCode;
-use actix_web::middleware::{ErrorHandlerResponse, ErrorHandlers};
-use actix_web::{error, middleware, web, App, Error, HttpResponse, HttpServer, Result};
 use std::collections::HashMap;
+
+use actix_web::{
+    body::BoxBody,
+    dev::ServiceResponse,
+    error,
+    http::{header::ContentType, StatusCode},
+    middleware::{self, ErrorHandlerResponse, ErrorHandlers},
+    web, App, Error, HttpResponse, HttpServer, Result,
+};
 use tera::Tera;
 
 // store tera template in application state

websockets/chat-tcp/src/server.rs

@@ -2,9 +2,10 @@
 //! And manages available rooms. Peers send messages to other peers in same
 //! room through `ChatServer`.
 
+use std::collections::{HashMap, HashSet};
+
 use actix::prelude::*;
 use rand::{self, rngs::ThreadRng, Rng};
-use std::collections::{HashMap, HashSet};
 
 use crate::session;