Feather is a lightweight, DX-first web framework for Rust — inspired by the simplicity of Express.js, but designed for Rust’s performance and safety.
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Middleware-First Architecture
Everything is a middleware — route handlers, auth, logging — all composable and clean. -
Easy State Management Using Context
In the recent versions Feather, implemented the Context API that makes it very easy manage state without the use of Extractors/Macros -
Developer Experience First
Feather’s API is minimal, ergonomic, and readable -
Modular and Extensible
Feather is designed to Modular, only select the features you need and use the. What you don't use you don't pay -
Great Tooling Out Of the Box
With the use of the Feather-CLI Creating API's and Web Servers become a Breeze.
Add Feather to your Cargo.toml:
[dependencies]
feather = "0.3.1"use feather::{App, AppContext, MiddlewareResult,Request, Response};
fn main() {
let mut app = App::new();
app.get("/",|_req: &mut Request, res: &mut Response, _ctx: &mut AppContext| {
res.send_text("Hello, world!");
MiddlewareResult::Next
});
app.listen("127.0.0.1:3000");
}That’s all — no async,
Middleware is intented to be heart of Feather. You may write it as a closure, a struct, or chain them together:
use feather::{App, AppContext, Request, Response};
use feather::middleware::builtins;
use feather::middleware::{Middleware, MiddlewareResult};
// Implementors of the Middleware trait are middleware that can be used in a Feather app.
struct Custom;
impl Middleware for Custom {
fn handle(&self,request: &mut Request,_response: &mut Response,_ctx: &mut AppContex) -> MiddlewareResult {
println!("Now running some custom middleware (struct Custom)!");
println!("And there's a request with path: {:?}", request.uri);
MiddlewareResult::Next
}
}
fn main() {
let mut app = App::new();
app.use_middleware(builtins::Logger);
app.use_middleware(Custom);
app.use_middleware(|_req: &mut Request, _res: &mut Response, _ctx: &mut AppContext| {
println!("Now running some custom middleware (closure)!");
MiddlewareResult::Next
});
app.get("/",|_req: &mut Request, res: &mut Response, _ctx: &mut AppContext| {
res.send_text("Hello, world!");
MiddlewareResult::Next
});
app.listen("127.0.0.1:3000");
}Feather's new Context API allows you to manage application-wide state without extractors or macros.
As an example:
use feather::{App, AppContext, MiddlewareResult, Response, Request};
struct Counter {
pub count: i32,
}
fn main() {
let mut app = App::new();
let counter = Counter { count: 0 };
app.context().set_state(counter);
app.get("/", move |_req: &mut Request, res: &mut Response, ctx: &mut AppContext| {
let counter: &mut Counter = ctx.get_mut_state::<Counter>().unwrap();
counter.count += 1;
res.send_text(format!("Counted! {}", counter.count));
MiddlewareResult::Next
});
app.get("/count", move |_req: &mut Request, res: &mut Response, ctx: &mut AppContext| {
let counter = ctx.get_state::<Counter>().unwrap();
res.send_text(counter.count.to_string());
MiddlewareResult::Next
});
app.listen("127.0.0.1:5050");
}Context Is more useful when combined with Database/File Accesses
Feather has native JWT module activated using a cargo feature jwt:
[dependencies]
feather = { version = "0.3.1", features = ["jwt"] }use feather::jwt::{generate_jwt, with_jwt_auth};
use feather::{App, AppContext};
fn main() {
let mut app = App::new();
app.get("/auth",with_jwt_auth("secretcode", |_req, res,_ctx, claim| {
println!("Claim: {:?}", claim);
res.send_text("Hello, JWT!");
feather::MiddlewareResult::Next
}),
);
// Check the JWT Example for more complete version!
app.listen("127.0.0.1:8080")
}- Being the simplest Rust web framework to get started with
- Being modular and easy to extend
- Focusing on DX without sacrificing Rust's safety and performance
PRs welcome!
If you’ve got ideas or bugs, please open an issue or submit a pull request.
# Getting started with dev
git clone https://github.com/BersisSe/feather.git
cd feather
cargo run --example appFeather is MIT licensed. See LICENSE.
Feather is inspired by Express.js and exists to bring that same productivity to Rust.
If you like Feather:
- ⭐ Star it on GitHub
- Share it on Reddit, HN, or Discord
- Build something and show up!