add required packages, env and database connection

.env

@@ -0,0 +1,4 @@
+PORT=8002
+JWT_SECRET=secret
+JWT_TTL_IN_MINUTES=30
+DATABASE_URL=mysql://test-api:test@localhost:3306/test

.env.example

@@ -0,0 +1,4 @@
+PORT=8002
+JWT_SECRET=secret
+JWT_TTL_IN_MINUTES=30
+DATABASE_URL=mysql://test-api:test@localhost:3306/test

Cargo.toml

@@ -1,8 +1,24 @@
 [package]
-name = "Axum-Rust-Api-Boilerplate"
+name = "axum_rust_api_boilerplate"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
+axum = { version = "0.6.3"}
+hyper = { version = "0.14.23", features = ["full"] }
+tokio = { version = "1.24.2", features = ["full"] }
+tower = { version = "0.4.13", features = ["full"] }
+tower-http = { version = "0.4.0", features = ["full"] }
+dotenv = "0.15.0"
+serde =  { version = "1.0.152", features = ["derive"] }
+jsonwebtoken = "8.3.0"
+thiserror = "1.0.40"
+chrono = {version = "0.4.24", features = ["serde"]}
+bcrypt = "0.14.0"
+serde_json = "1.0.95"
+mockall = "0.11.4"
+sqlx = { version = "0.6.3", features = [ "runtime-tokio-native-tls", "migrate", "chrono", "time"] }
+validator = { version = "0.16.0", features = ["derive"] }
+async-trait = "0.1.68"
+sqlx-cli = "0.6.3"
+

src/config/database.rs

@@ -0,0 +1,28 @@
+use crate::parameter;
+use async_trait::async_trait;
+use sqlx::{Error, MySql, MySqlPool, Pool};
+
+pub struct Database {
+    pool: Pool<MySql>,
+}
+
+#[async_trait]
+pub trait DatabaseTrait {
+    async fn init() -> Result<Self, Error>
+        where
+            Self: Sized;
+    fn get_pool(&self) -> &Pool<MySql>;
+}
+
+#[async_trait]
+impl DatabaseTrait for Database {
+    async fn init() -> Result<Self, Error> {
+        let database_url = parameter::get("DATABASE_URL");
+        let pool = MySqlPool::connect(&database_url).await?;
+        Ok(Self { pool })
+    }
+
+    fn get_pool(&self) -> &Pool<MySql> {
+        &self.pool
+    }
+}

src/config/mod.rs

@@ -0,0 +1,2 @@
+pub mod database;
+pub mod parameter;

src/config/parameter.rs

@@ -0,0 +1,11 @@
+use dotenv;
+
+pub fn init() {
+    dotenv::dotenv().ok().expect("Failed to load .env file");
+}
+
+pub fn get(parameter: &str) -> String {
+    let env_parameter = std::env::var(parameter)
+        .expect(&format!("{} is not defined in the environment.", parameter));
+    return env_parameter;
+}

src/main.rs

@@ -1,3 +1,20 @@
-fn main() {
-    println!("Hello, world!");
+use std::sync::Arc;
+use crate::config::{database, parameter};
+use crate::config::database::DatabaseTrait;
+
+mod config;
+mod routes;
+
+#[tokio::main]
+async fn main() {
+    parameter::init();
+    let connection = database::Database::init()
+        .await
+        .unwrap_or_else(|e| panic!("Database error: {}", e.to_string()));
+
+    let host = format!("0.0.0.0:{}", parameter::get("PORT"));
+    axum::Server::bind(&host.parse().unwrap())
+        .serve(routes::root::routes(Arc::new(connection)))
+        .await
+        .unwrap_or_else(|e| panic!("Server error: {}", e.to_string()));
 }

src/routes/mod.rs

@@ -0,0 +1 @@
+pub mod root;

src/routes/root.rs

@@ -0,0 +1,12 @@
+use std::sync::Arc;
+use crate::config::database::Database;
+use axum::routing::{get, IntoMakeService};
+use axum::{middleware, Router};
+
+pub fn routes(db_conn: Arc<Database>) -> IntoMakeService<Router> {
+
+    let app_router = Router::new()
+        .nest("/api", Router::new().route("/health", get(|| async { "Healthy..." })));
+
+    app_router.into_make_service()
+}