Using envvault with Rust

Note: Please ensure that you have completed the previous steps

Prerequisites

Rust and Cargo installed
envvault CLI tool installed
An existing Rust project

Usage

Running Your Application

To run your Rust application with environment variables from envvault:

$ envvault run --env=dev cargo run

Caching Environment Variables

For better performance, you can cache your environment variables:

$ envvault run --env=dev -c -- cargo run

Example Implementation

Here is how to set up a basic Rust web server with envvault:

// main.rs
use actix_web::{web, App, HttpServer, HttpResponse};
use std::env;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    // Your environment variables are automatically loaded
    let port = env::var("PORT").unwrap_or_else(|_| "8080".to_string());
    let db_url = env::var("DB_URL").expect("DB_URL must be set");

    HttpServer::new(|| {
        App::new()
            .route("/", web::get().to(|| async { 
                HttpResponse::Ok().body("Hello from envvault!")
            }))
    })
    .bind(format!("127.0.0.1:{}", port))?
    .run()
    .await
}

// Cargo.toml
[dependencies]
actix-web = "4.0"