Update db/basic, db/sqlx_todo and db/r2d2 to v4 (#506)

database_interactions/sqlx_todo/Cargo.toml

@@ -2,17 +2,17 @@
 name = "sqlx_todo"
 version = "0.1.0"
 authors = ["Milan Zivkovic <zivkovic.milan@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-actix-web = "3"
+actix-web = "4.0.0-beta.21"
 serde = "1.0.106"
 serde_json = "1.0.51"
-sqlx = { version = "0.3", features = ["sqlite"] }
+sqlx = { version = "0.5.9", features = ["sqlite", "runtime-actix-rustls"] }
 dotenv = "0.15.0"
-env_logger = "0.7.1"
+env_logger = "0.9.0"
 log = "0.4.8"
 anyhow = "1.0.28"
 futures = "0.3.13"

database_interactions/sqlx_todo/README.md

@@ -19,7 +19,12 @@ $ cd database_interactions/sqlx_todo
 
 ## Set up the database
 
-* Create new database using `schema.sql`
+* Create new database:
+
+```bash
+./setup_db.sh
+```
+
 * Copy `.env.example` into `.env` and adjust `DATABASE_URL` to match your SQLite address, if needed
 
 ```sh
@@ -35,4 +40,4 @@ To run the application execute:
 cargo run
 ```
 
-By default application will be available on `http://localhost:8080`. If you wish to change address or port you can do it inside the `.env` file
+By default the application will be available on `http://localhost:8080`. If you wish to change address or port you can do it inside the `.env` file

database_interactions/sqlx_todo/setup_db.sh

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+sqlite3 test.db < schema.sql

database_interactions/sqlx_todo/src/main.rs

@@ -40,7 +40,7 @@ async fn main() -> Result<()> {
         .expect("PORT should be a u16");
 
     info!("using sqlite database at: {}", &database_url);
-    let db_pool = SqlitePool::new(&database_url).await?;
+    let db_pool = SqlitePool::connect(&database_url).await?;
 
     // startup connection+schema check
     sqlx::query!("SELECT * FROM todos")
@@ -51,7 +51,7 @@ async fn main() -> Result<()> {
     let server = HttpServer::new(move || {
         App::new()
             // pass database pool to application so we can access it inside handlers
-            .data(db_pool.clone())
+            .app_data(web::Data::new(db_pool.clone()))
             .wrap(middleware::Logger::default())
             .route("/", web::get().to(index))
             .configure(todo::init) // init todo routes

database_interactions/sqlx_todo/src/todo/model.rs

@@ -1,4 +1,4 @@
-use actix_web::{Error, HttpRequest, HttpResponse, Responder};
+use actix_web::{body::BoxBody, HttpRequest, HttpResponse, Responder};
 use anyhow::Result;
 use serde::{Deserialize, Serialize};
 use sqlx::sqlite::SqliteRow;
@@ -14,17 +14,16 @@ pub struct TodoRequest {
 // this struct will be used to represent database record
 #[derive(Serialize, FromRow)]
 pub struct Todo {
-    pub id: i32,
+    pub id: i64,
     pub description: String,
     pub done: bool,
 }
 
 // implementation of Actix Responder for Todo struct so we can return Todo from action handler
 impl Responder for Todo {
-    type Error = Error;
-    type Future = HttpResponse;
+    type Body = BoxBody;
 
-    fn respond_to(self, _req: &HttpRequest) -> Self::Future {
+    fn respond_to(self, _req: &HttpRequest) -> HttpResponse {
         // create response and set content type
         HttpResponse::Ok().json(&self)
     }
@@ -130,7 +129,8 @@ impl Todo {
             id,
         )
         .execute(&mut tx)
-        .await?;
+        .await?
+        .rows_affected();
 
         if n == 0 {
             return Ok(None);
@@ -168,7 +168,8 @@ impl Todo {
             id,
         )
         .execute(&mut tx)
-        .await?;
+        .await?
+        .rows_affected();
 
         tx.commit().await?;
         Ok(n_deleted)