🦀 RustAPI

An example API built with Rust, Axum, SQLx, and PostgreSQL

🚀 Core Features

• Rust API template - Production-ready starter template with modern practices,
• PostgreSQL integration - Full database support with SQLx migrations,
• Easy to secure - HTTP/2 with secure TLS defaults (AWS-LC, FIPS 140-3),
• Easy to configure - .env and environment variables,
• JWT authentication - Secure token-based auth with Argon2 password hashing,
• Optimized for performance - Brotli compression,
• Comprehensive health monitoring
  Docker-compatible endpoint with system metrics:

  {
    "details": {
      "cpu_usage": {"available_percentage": "9.85", "status": "low"},
      "database": {"status": "ok"},
      "disk_usage": {"status": "ok", "used_percentage": "74.00"},
      "memory": {"available_mb": 21613, "status": "normal"}
    },
    "status": "degraded"
  }
  

• Granular access control - Role-based endpoint protection:

  .route("/", post(post_todo).layer(axum::middleware::from_fn(|req, next| {
      let allowed_roles = vec![1, 2];
      authorize(req, next, allowed_roles)
  })))
  

• User context injection - Automatic user profile handling in endpoints:

  pub async fn post_todo(
      Extension(user): Extension<User>,  // Injected user
      Json(todo): Json<TodoBody>
  ) -> impl IntoResponse {
      if todo.user_id != user.id {
          return Err((StatusCode::FORBIDDEN, Json(json!({ 
              "error": "Cannot create todos for others" 
          }))));
      }
  

• Observability - Integrated tracing,
• Documented codebase - Extensive inline comments for easy modification and readability,
• Latest dependencies - Regularly updated Rust ecosystem crates,

🛠️ Technology stack

Category	Key Technologies
Web Framework	Axum 0.8 + Tower
Database	PostgreSQL + SQLx 0.8
Security	JWT + Argon2 + Rustls
Monitoring	Tracing + Sysinfo

📂 Project structure

rustapi/
├── migrations/      # SQL schema migrations. Creates the required tables and inserts demo data.
├── src/
│   ├── core/        # Core modules: for reading configuration files, starting the server and configuring HTTPS/
│   ├── database/    # Database connectivity, getters and setters for the database.
│   ├── middlewares/ # Currently just the authentication system.
│   ├── models/      # Data structures
│   └── routes/      # API endpoints
│        └── mod.rs      # API endpoint router.
│   └── .env         # Configuration file.
└── Dockerfile       # Builds a docker container for the application.
└── compose.yaml     # Docker-compose.yaml. Runs container for the application (also includes a PostgreSQL-container).

🌐 Default API endpoints

Method	Endpoint	Auth Required	Allowed Roles	Description
POST	/signin	No	None	Authenticate user and get JWT token
GET	/protected	Yes	1, 2	Test endpoint for authenticated users
GET	/health	No	None	System health check with metrics
User routes
GET	/users/all	No*	None	Get all users
GET	/users/{id}	No*	None	Get user by ID
POST	/users/	No*	None	Create new user
Todo routes
GET	/todos/all	No*	None	Get all todos
POST	/todos/	Yes	1, 2	Create new todo
GET	/todos/{id}	No*	None	Get todo by ID

Key:
🔒 = Requires JWT in Authorization: Bearer <token> header
* Currently unprotected - recommend adding authentication for production
Roles: 1 = User, 2 = Administrator

Security notes:

• All POST endpoints expect JSON payloads
• User creation endpoint should be protected in production
• Consider adding rate limiting to authentication endpoints Notes:
• 🔒 = Requires JWT in Authorization: Bearer <token> header
• Roles: 1 = Regular User, 2 = Administrator
• *Marked endpoints currently unprotected - recommend adding middleware for production use
• All POST endpoints expect JSON payloads

📦 Installation & Usage

# Clone and setup
git clone https://github.com/Riktastic/rustapi.git
cd rustapi && cp .env.example .env

# Database setup
sqlx database create && sqlx migrate run

# Start server
cargo run --release

🔐 Default accounts

Warning: These accounts should only be used for initial testing. Always change or disable them in production environments.

Email	Password	Role
user@test.com	test	User
admin@test.com	test	Administrator

⚠️ Security recommendations:

1. Rotate passwords immediately after initial setup
2. Disable default accounts before deploying to production
3. Implement proper user management endpoints

⚙️ Configuration

Create a .env file in the root of the project or configure the application using environment variables.

# ==============================
# 📌 DATABASE CONFIGURATION
# ==============================

# PostgreSQL connection URL (format: postgres://user:password@host/database)
DATABASE_URL="postgres://postgres:1234@localhost/database_name"

# Maximum number of connections in the database pool
DATABASE_MAX_CONNECTIONS=20

# Minimum number of connections in the database pool
DATABASE_MIN_CONNECTIONS=5

# ==============================
# 🌍 SERVER CONFIGURATION
# ==============================

# IP address the server will bind to (0.0.0.0 allows all network interfaces)
SERVER_IP="0.0.0.0"

# Port the server will listen on
SERVER_PORT="3000"

# Enable tracing for debugging/logging (true/false)
SERVER_TRACE_ENABLED=true

# ==============================
# 🔒 HTTPS CONFIGURATION
# ==============================

# Enable HTTPS (true/false)
SERVER_HTTPS_ENABLED=false

# Enable HTTP/2 when using HTTPS (true/false)
SERVER_HTTPS_HTTP2_ENABLED=true

# Path to the SSL certificate file (only used if SERVER_HTTPS_ENABLED=true)
SERVER_HTTPS_CERT_FILE_PATH=cert.pem

# Path to the SSL private key file (only used if SERVER_HTTPS_ENABLED=true)
SERVER_HTTPS_KEY_FILE_PATH=key.pem

# ==============================
# 🚦 RATE LIMIT CONFIGURATION
# ==============================

# Maximum number of requests allowed per period
SERVER_RATE_LIMIT=5

# Time period (in seconds) for rate limiting
SERVER_RATE_LIMIT_PERIOD=1

# ==============================
# 📦 COMPRESSION CONFIGURATION
# ==============================

# Enable Brotli compression (true/false)
SERVER_COMPRESSION_ENABLED=true

# Compression level (valid range: 0-11, where 11 is the highest compression)
SERVER_COMPRESSION_LEVEL=6

# ==============================
# 🔑 AUTHENTICATION CONFIGURATION
# ==============================

# Argon2 salt for password hashing (must be kept secret!)
AUTHENTICATION_ARGON2_SALT="dMjQgtSmoQIH3Imi"