2021-05-30 15:44:26 +02:00
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#![allow(warnings)]
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2021-05-30 14:33:20 +02:00
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use bytes::Bytes;
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use http::{Request, StatusCode};
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use hyper::Server;
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use serde::Deserialize;
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use std::{
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collections::HashMap,
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net::SocketAddr,
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sync::{Arc, Mutex},
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time::Duration,
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};
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use tower::{make::Shared, ServiceBuilder};
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use tower_http::{
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add_extension::AddExtensionLayer, compression::CompressionLayer, trace::TraceLayer,
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};
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use tower_web::{body::Body, extract, response, Error};
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#[tokio::main]
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async fn main() {
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tracing_subscriber::fmt::init();
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// build our application with some routes
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let app = tower_web::app()
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2021-05-30 15:44:26 +02:00
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.at("/:key")
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2021-05-30 14:33:20 +02:00
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.get(get)
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.post(set)
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// convert it into a `Service`
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.into_service();
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// add some middleware
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let app = ServiceBuilder::new()
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.timeout(Duration::from_secs(10))
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.layer(TraceLayer::new_for_http())
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.layer(CompressionLayer::new())
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.layer(AddExtensionLayer::new(SharedState::default()))
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.service(app);
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// run it with hyper
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let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
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tracing::debug!("listening on {}", addr);
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let server = Server::bind(&addr).serve(Shared::new(app));
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server.await.unwrap();
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}
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type SharedState = Arc<Mutex<State>>;
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#[derive(Default)]
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struct State {
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db: HashMap<String, Bytes>,
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}
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async fn get(
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_req: Request<Body>,
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2021-05-30 16:53:27 +02:00
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params: extract::UrlParams<(String,)>,
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2021-05-30 14:33:20 +02:00
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state: extract::Extension<SharedState>,
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) -> Result<Bytes, Error> {
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let state = state.into_inner();
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let db = &state.lock().unwrap().db;
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2021-05-30 16:53:27 +02:00
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let (key,) = params.into_inner();
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2021-05-30 14:33:20 +02:00
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2021-05-30 16:53:27 +02:00
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if let Some(value) = db.get(&key) {
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2021-05-30 14:33:20 +02:00
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Ok(value.clone())
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} else {
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2021-05-30 15:44:26 +02:00
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Err(Error::Status(StatusCode::NOT_FOUND))
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2021-05-30 14:33:20 +02:00
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}
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}
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async fn set(
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_req: Request<Body>,
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2021-05-30 16:53:27 +02:00
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params: extract::UrlParams<(String,)>,
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2021-05-30 14:33:20 +02:00
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value: extract::BytesMaxLength<{ 1024 * 5_000 }>, // ~5mb
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state: extract::Extension<SharedState>,
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2021-05-31 20:42:57 +02:00
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) -> response::Empty {
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2021-05-30 14:33:20 +02:00
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let state = state.into_inner();
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let db = &mut state.lock().unwrap().db;
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2021-05-30 16:53:27 +02:00
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let (key,) = params.into_inner();
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2021-05-30 14:33:20 +02:00
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let value = value.into_inner();
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2021-05-30 15:44:26 +02:00
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db.insert(key.to_string(), value);
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2021-05-30 14:33:20 +02:00
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2021-05-31 20:42:57 +02:00
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response::Empty
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2021-05-30 14:33:20 +02:00
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}
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