database

.env

@@ -0,0 +1 @@
+DATABASE_URL=postgres://postgres:hugo123@localhost/karldbeinz

Cargo.toml

@@ -10,4 +10,5 @@ edition = "2018"
 actix-web = "3"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.64"
-sqlx = { version = "0.5", features = ["postgres", "macros", "runtime-actix-rustls"] }
+diesel = { version = "1.4.4", features = ["postgres"] }
+dotenv = "0.15.0"

diesel.toml

@@ -0,0 +1,5 @@
+# For documentation on how to configure this file,
+# see diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"

migrations/00000000000000_diesel_initial_setup/down.sql

@@ -0,0 +1,6 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
+DROP FUNCTION IF EXISTS diesel_set_updated_at();

migrations/00000000000000_diesel_initial_setup/up.sql

@@ -0,0 +1,36 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+
+
+
+-- Sets up a trigger for the given table to automatically set a column called
+-- `updated_at` whenever the row is modified (unless `updated_at` was included
+-- in the modified columns)
+--
+-- # Example
+--
+-- ```sql
+-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
+--
+-- SELECT diesel_manage_updated_at('users');
+-- ```
+CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+                    FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := current_timestamp;
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;

migrations/2021-07-02-070233_create_posts/down.sql

@@ -0,0 +1,3 @@
+-- This file should undo anything in `up.sql`
+
+DROP TABLE posts;

migrations/2021-07-02-070233_create_posts/up.sql

@@ -0,0 +1,8 @@
+-- Your SQL goes here
+
+CREATE TABLE posts (
+    id SERIAL PRIMARY KEY,
+    author VARCHAR NOT NULL,
+    title VARCHAR NOT NULL,
+    body VARCHAR NOT NULL DEFAULT ''
+);

src/main.rs

@@ -1,49 +1,43 @@
+#[macro_use]
+extern crate diesel;
+extern crate dotenv;
+
+mod models;
+mod schema;
+
 use std::error::Error;
 use std::sync::Mutex;
 
-use actix_web::{App, Either, get, HttpResponse, HttpServer, post, Responder, web};
-use serde::{Deserialize, Serialize};
-use sqlx::postgres::PgPoolOptions;
+use diesel::prelude::*;
+use dotenv::dotenv;
+use std::env;
 
-macro_rules! impl_responder {
-    (for $name: ident) => {
-        impl actix_web::Responder for $name {
-            type Error = actix_web::Error;
-            type Future = std::future::Ready<Result<actix_web::HttpResponse, actix_web::Error>>;
-
-            fn respond_to(self, _req: &actix_web::HttpRequest) -> Self::Future {
-                let body = serde_json::to_string(&self).unwrap();
-
-                std::future::ready(Ok(actix_web::HttpResponse::Ok()
-                    .content_type("application/json")
-                    .body(body)))
-            }
-        }
-    };
-}
-impl_responder!(for Person);
-impl_responder!(for Post);
-
-#[derive(Serialize, Deserialize, Clone)]
-struct Person {
-    name: String,
-    age: i32,
-}
-
-#[derive(Serialize, Deserialize, Clone)]
-struct Post {
-    #[serde(default)]
-    id: usize,
-    author: String,
-    title: String,
-    content: String,
-}
+use crate::models::{Person, Post};
+use actix_web::{get, post, web, App, Either, HttpResponse, HttpServer, Responder};
 
 struct AppState {
     posts: Mutex<Vec<Post>>,
     hugo: Mutex<Person>,
 }
 
+#[get("post")]
+async fn get_posts() -> impl Responder {
+    use crate::schema::posts::dsl::*;
+
+    let results = web::block(|| {
+        let connection = establish_connection();
+        posts.load::<Post>(&connection)
+    })
+    .await
+    .map_err(|e| {
+        eprintln!("{:?}", e);
+        HttpResponse::InternalServerError().finish()
+    })
+    .map(|vec| HttpResponse::Ok().json(vec));
+
+    results
+}
+
 #[get("/post/{id}")]
 async fn get_post(
     web::Path(id): web::Path<usize>,
@@ -60,7 +54,7 @@ async fn get_post(
 #[post("/post")]
 async fn post_post(mut post: web::Json<Post>, data: web::Data<AppState>) -> impl Responder {
     let mut posts = data.posts.lock().unwrap();
-    post.id = posts.len();
+    post.id = posts.len() as i32;
     posts.push(post.clone());
     post
 }
@@ -83,16 +77,16 @@ async fn hugo_post(new_hugo: web::Json<Person>, data: web::Data<AppState>) -> im
 
 #[actix_web::main]
 async fn main() -> Result<(), Box<dyn Error>> {
-    let pool = PgPoolOptions::new()
+    /*let pool = PgPoolOptions::new()
     .max_connections(5)
     .connect("postgres://postgres:karl@localhost/karlheinz")
-        .await?;
+    .await?;*/
 
     let posts = vec![Post {
         id: 0,
         author: "Hugo Boss".to_string(),
         title: "I like winning".to_string(),
-        content: "I really like winning. That's why I always win at everything".to_string(),
+        body: "I really like winning. That's why I always win at everything".to_string(),
     }];
 
     let data = web::Data::new(AppState {
@@ -103,17 +97,25 @@ async fn main() -> Result<(), Box<dyn Error>> {
         }),
     });
 
+    println!("Started Server...");
     HttpServer::new(move || {
         App::new()
-            .data(pool.clone())
+            //   .data(pool.clone())
             .app_data(data.clone())
             .service(hugo_post)
             .service(hugo)
             .service(get_post)
             .service(post_post)
+            .service(get_posts)
     })
     .bind("127.0.0.1:8080")?
     .run()
     .await?;
     Ok(())
 }
+
+pub fn establish_connection() -> PgConnection {
+    dotenv().ok();
+    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+    PgConnection::establish(&database_url).expect(&format!("Error connecting to {}", database_url))
+}

src/models.rs

@@ -0,0 +1,35 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Queryable, Clone)]
+pub struct Post {
+    #[serde(default)]
+    pub id: i32,
+    pub author: String,
+    pub title: String,
+    pub body: String,
+}
+
+#[derive(Serialize, Deserialize, Clone)]
+pub struct Person {
+    pub name: String,
+    pub age: i32,
+}
+
+macro_rules! impl_responder {
+    (for $name: ident) => {
+        impl actix_web::Responder for $name {
+            type Error = actix_web::Error;
+            type Future = std::future::Ready<Result<actix_web::HttpResponse, actix_web::Error>>;
+
+            fn respond_to(self, _req: &actix_web::HttpRequest) -> Self::Future {
+                let body = serde_json::to_string(&self).unwrap();
+
+                std::future::ready(Ok(actix_web::HttpResponse::Ok()
+                    .content_type("application/json")
+                    .body(body)))
+            }
+        }
+    };
+}
+impl_responder!(for Person);
+impl_responder!(for Post);

src/schema.rs

@@ -0,0 +1,8 @@
+table! {
+    posts (id) {
+        id -> Int4,
+        author -> Varchar,
+        title -> Varchar,
+        body -> Varchar,
+    }
+}

startdb.bat

@@ -0,0 +1 @@
+docker run -d -e POSTGRES_PASSWORD=hugo123 -p 5432:5432 --name karldbeinz postgres