End of 3.9

~ Move to PgPool over PgConnection
+ Add in SQL query

.cargo/config.toml

@@ -19,4 +19,7 @@ rustflags = ["-C", "linker=clang", "-C", "link-arg=-fuse-ld=lld"]
 # rustflags = ["-C", "link-arg=-fuse-ld=/usr/local/bin/zld"]
 
 [target.aarch64-apple-darwin]
-rustflags = ["-C", "link-arg=-fuse-ld=/opt/homebrew/Cellar/llvm/16.0.6/bin/ld64.lld"]
+rustflags = [
+    "-C",
+    "link-arg=-fuse-ld=/opt/homebrew/Cellar/llvm/17.0.6_1/bin/ld64.lld",
+]

Cargo.toml

@@ -14,10 +14,12 @@ name = "mail_app"
 actix-web = "4"
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 serde = { version = "1", features = ["derive"] }
-config = "0.13"
+config = { version = "0.13", default-features = false, features = ["yaml"] }
+uuid = { version = "1", features = ["v4"] }
+chrono = { version = "0.4.22", default-features = false, features = ["clock"] }
 
 [dependencies.sqlx]
-version = "0.6"
+version = "0.7"
 default-features = false
 features = [
     "runtime-tokio-rustls",
@@ -25,8 +27,8 @@ features = [
     "postgres",
     "uuid",
     "chrono",
-    "migrate"
+    "migrate",
 ]
 
 [dev-dependencies]
-reqwest = "0.11"
+reqwest = { version = "0.11", features = ["json"] }

src/main.rs

@@ -1,11 +1,15 @@
 use mail_app::configuration::get_configuration;
 use mail_app::startup::run;
+use sqlx::PgPool;
 use std::net::TcpListener;
 
 #[tokio::main]
 async fn main() -> Result<(), std::io::Error> {
-    let configuration = get_configuration().expect("Failed to read config");
+    let configuration = get_configuration().expect("Failed to read configuration");
+    let connection_pool = PgPool::connect(&configuration.database.connection_string())
+        .await
+        .expect("Failed to connect to Postgres.");
     let address = format!("127.0.0.1:{}", configuration.application_port);
     let listener = TcpListener::bind(address)?;
-    run(listener)?.await
+    run(listener, connection_pool)?.await
 }

src/routes/subscriptions.rs

@@ -1,11 +1,32 @@
 use actix_web::{web, HttpResponse};
+use chrono::Utc;
+use sqlx::PgPool;
+use uuid::Uuid;
 
 #[derive(serde::Deserialize)]
 pub struct FormData {
-    // email: String,
-    // name: String,
+    email: String,
+    name: String,
 }
 
-pub async fn subscribe(_form: web::Form<FormData>) -> HttpResponse {
-    HttpResponse::Ok().finish()
+pub async fn subscribe(form: web::Form<FormData>, pool: web::Data<PgPool>) -> HttpResponse {
+    match sqlx::query!(
+        r#"
+        INSERT INTO subscriptions (id, email, name, subscribed_at)
+        VALUES ($1, $2, $3, $4)
+        "#,
+        Uuid::new_v4(),
+        form.email,
+        form.name,
+        Utc::now()
+    )
+    .execute(pool.get_ref())
+    .await
+    {
+        Ok(_) => HttpResponse::Ok().finish(),
+        Err(e) => {
+            println!("Failed to execute query: {}", e);
+            HttpResponse::InternalServerError().finish()
+        }
+    }
 }

src/startup.rs

@@ -1,13 +1,16 @@
 use crate::routes::{health_check, subscribe};
 use actix_web::dev::Server;
 use actix_web::{web, App, HttpServer};
+use sqlx::PgPool;
 use std::net::TcpListener;
 
-pub fn run(listener: TcpListener) -> Result<Server, std::io::Error> {
-    let server = HttpServer::new(|| {
+pub fn run(listener: TcpListener, db_pool: PgPool) -> Result<Server, std::io::Error> {
+    let connection = web::Data::new(db_pool);
+    let server = HttpServer::new(move || {
         App::new()
             .route("/health_check", web::get().to(health_check))
             .route("/subscriptions", web::post().to(subscribe))
+            .app_data(connection.clone())
     })
     .listen(listener)?
     .run();