An ergonomic and elegant framework for creating Gemini servers and SCGI apps without needless bloat
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use anyhow::*;
use log::LevelFilter;
use northstar::{
GEMINI_PORT,
Document,
Request,
Response,
Server,
user_management::{
user::RegisteredUser,
UserManagementRoutes,
},
};
#[tokio::main]
/// An ultra-simple demonstration of authentication.
///
/// The user should be able to set a secret string that only they can see. They should be
/// able to change this at any time to any thing. Both the string and the user account
/// will persist across restarts.
///
/// This method sets up and starts the server
async fn main() -> Result<()> {
// Turn on logging
env_logger::builder()
.filter_module("northstar", LevelFilter::Debug)
.init();
Server::bind(("0.0.0.0", GEMINI_PORT))
// Add our main routes
.add_authenticated_route("/", handle_main)
.add_authenticated_route("/update", handle_update)
// Add routes for handling user authentication
.add_um_routes::<String>("/")
// Start the server
.serve()
.await
}
/// The landing page
///
/// Displays the user's current secret string, or prompts the user to sign in if they
/// haven't. Includes links to update your string (`/update`) or your account
/// (`/account`). Even though we haven't added an explicit handler for `/account`, this
/// route is managed by northstar.
///
/// Because this route is registered as an authenticated route, any connections without a
/// certificate will be prompted to add a certificate and register.
async fn handle_main(_req: Request, user: RegisteredUser<String>) -> Result<Response> {
// If the user is signed in, render and return their page
let response = Document::new()
.add_text("Your personal secret string:")
.add_text(user.as_ref())
.add_blank_line()
.add_link("/update", "Change your string")
.add_link("/account", "Update your account")
.into();
Ok(response)
}
/// The update endpoint
///
/// Users can update their secret string here.
async fn handle_update(request: Request, mut user: RegisteredUser<String>) -> Result<Response> {
// If the user is logged in, check to see if they provided any input. If they
// have, we can set that input as their new string, otherwise we ask them for it
if let Some(string) = request.input() {
// Update the users data
*user.as_mut() = string.to_owned();
// Render a response
let response = Document::new()
.add_text("String updated!")
.add_blank_line()
.add_link("/", "Back")
.into();
Ok(response)
} else {
// Ask the user for some input
Ok(Response::input_lossy("Enter your new string"))
}
}