tjmaynes

[dependencies]
actix-web = "4.0.0-beta.8"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
sqlx = { version = "0.5.7", features = [ "runtime-actix-native-tls", "postgres" ] }

tjmaynes

use actix_web::{web, App, HttpServer, HttpResponse};

async fn get_health_status() -> HttpResponse {
    HttpResponse::Ok()
        .content_type("application/json")
        .body("Healthy!")
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {

tjmaynes

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    let database_url = std::env::var("DATABASE_URL").expect("Should set 'DATABASE_URL'");
    ...

tjmaynes

    ...
    let db_conn = PgPoolOptions::new()
        .max_connections(5)
        .connect_timeout(Duration::from_secs(2))
        .connect(database_url.as_str()) // <- Use the str version of database_url variable.
        .await
        .expect("Should have created a database connection");
    ...

tjmaynes

...
use sqlx::{Pool, Postgres, postgres::PgPoolOptions};
...


struct AppState {
    db_conn: Pool<Postgres>
}

tjmaynes

    ...
    let app_state = web::Data::new(AppState {
        db_conn: db_conn
    });
    ...

tjmaynes

    ...
    let app_state = web::Data::new(AppState {
        db_conn: db_conn
    });

    HttpServer::new(move || {
        App::new()
            .app_data(app_state.clone()) // <- cloned app_state variable
            .route("/health", web::get().to(get_health_status))
    })

tjmaynes

use actix_web::{web, App, HttpServer, HttpResponse};
use sqlx::{Pool, Postgres, postgres::PgPoolOptions};

async fn get_health_status() -> HttpResponse {
    HttpResponse::Ok()
        .content_type("application/json")
        .body("Healthy!")
}

struct AppState {

tjmaynes

async fn get_health_status(data: web::Data<AppState>) -> HttpResponse {
    ...

tjmaynes

async fn get_health_status(data: web::Data<AppState>) -> HttpResponse {
    let is_database_connected = sqlx::query("SELECT 1")
        .fetch_one(&data.db_conn)
        .await
        .is_ok();
    ...