|
| 1 | +use crate::Auth; |
| 2 | +use anyhow::{Context, Result}; |
| 3 | +use hyper::server::conn::AddrIncoming; |
| 4 | +use hyper::{Body, Method, Request, Response}; |
| 5 | +use std::net::SocketAddr; |
| 6 | +use std::sync::Arc; |
| 7 | +use tower::ServiceBuilder; |
| 8 | +use tower_http::trace::DefaultOnResponse; |
| 9 | +use tower_http::{compression::CompressionLayer, cors}; |
| 10 | +use tracing::{Level, Span}; |
| 11 | + |
| 12 | +pub(crate) async fn run(auth: Arc<Auth>, addr: SocketAddr) -> Result<()> { |
| 13 | + tracing::info!("listening for HTTP requests on {addr}"); |
| 14 | + |
| 15 | + fn trace_request<B>(req: &Request<B>, _span: &Span) { |
| 16 | + tracing::debug!("got request: {} {}", req.method(), req.uri()); |
| 17 | + } |
| 18 | + let service = ServiceBuilder::new() |
| 19 | + .layer( |
| 20 | + tower_http::trace::TraceLayer::new_for_http() |
| 21 | + .on_request(trace_request) |
| 22 | + .on_response( |
| 23 | + DefaultOnResponse::new() |
| 24 | + .level(Level::DEBUG) |
| 25 | + .latency_unit(tower_http::LatencyUnit::Micros), |
| 26 | + ), |
| 27 | + ) |
| 28 | + .layer(CompressionLayer::new()) |
| 29 | + .layer( |
| 30 | + cors::CorsLayer::new() |
| 31 | + .allow_methods(cors::AllowMethods::any()) |
| 32 | + .allow_headers(cors::Any) |
| 33 | + .allow_origin(cors::Any), |
| 34 | + ) |
| 35 | + .service_fn(move |req| { |
| 36 | + let auth = auth.clone(); |
| 37 | + handle_request(auth, req) |
| 38 | + }); |
| 39 | + |
| 40 | + let listener = tokio::net::TcpListener::bind(&addr).await?; |
| 41 | + let server = hyper::server::Server::builder(AddrIncoming::from_listener(listener)?) |
| 42 | + .tcp_nodelay(true) |
| 43 | + .serve(tower::make::Shared::new(service)); |
| 44 | + |
| 45 | + server.await.context("Http server exited with an error")?; |
| 46 | + |
| 47 | + Ok(()) |
| 48 | +} |
| 49 | + |
| 50 | +async fn handle_request(auth: Arc<Auth>, req: Request<Body>) -> Result<Response<Body>> { |
| 51 | + let auth_header = req.headers().get(hyper::header::AUTHORIZATION); |
| 52 | + let auth = match auth.authenticate_http(auth_header) { |
| 53 | + Ok(auth) => auth, |
| 54 | + Err(err) => { |
| 55 | + return Ok(Response::builder() |
| 56 | + .status(hyper::StatusCode::UNAUTHORIZED) |
| 57 | + .body(err.to_string().into()) |
| 58 | + .unwrap()); |
| 59 | + } |
| 60 | + }; |
| 61 | + |
| 62 | + match (req.method(), req.uri().path()) { |
| 63 | + (&Method::POST, "/frames") => handle_query(req, auth).await, |
| 64 | + _ => Ok(Response::builder().status(404).body(Body::empty()).unwrap()), |
| 65 | + } |
| 66 | +} |
| 67 | + |
| 68 | +#[derive(Debug, serde::Deserialize, serde::Serialize)] |
| 69 | +pub struct FramesRequest { |
| 70 | + pub next_offset: u64, |
| 71 | +} |
| 72 | + |
| 73 | +fn error(msg: &str, code: hyper::StatusCode) -> Response<Body> { |
| 74 | + let err = serde_json::json!({ "error": msg }); |
| 75 | + Response::builder() |
| 76 | + .status(code) |
| 77 | + .body(Body::from(serde_json::to_vec(&err).unwrap())) |
| 78 | + .unwrap() |
| 79 | +} |
| 80 | + |
| 81 | +async fn handle_query( |
| 82 | + mut req: Request<Body>, |
| 83 | + _auth: crate::auth::Authenticated, |
| 84 | +) -> Result<Response<Body>> { |
| 85 | + let bytes = hyper::body::to_bytes(req.body_mut()).await?; |
| 86 | + let FramesRequest { next_offset } = match serde_json::from_slice(&bytes) { |
| 87 | + Ok(req) => req, |
| 88 | + Err(resp) => return Ok(error(&resp.to_string(), hyper::StatusCode::BAD_REQUEST)), |
| 89 | + }; |
| 90 | + |
| 91 | + Ok(Response::builder() |
| 92 | + .status(hyper::StatusCode::OK) |
| 93 | + .body(Body::from(format!( |
| 94 | + "{{\"comment\":\"thx for sending the request\", \"next_offset\":{}}}", |
| 95 | + next_offset + 1 |
| 96 | + ))) |
| 97 | + .unwrap()) |
| 98 | +} |
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