mirror of
https://github.com/tokio-rs/axum.git
synced 2024-12-27 23:10:20 +01:00
Update example-reqwest-response (#2430)
This commit is contained in:
gerardcl
GitHub
parent
584c328bb0
commit
12676aabea
1 changed files with 73 additions and 71 deletions
|
|
@ -4,80 +4,82 @@
|
|||
//! cargo run -p example-reqwest-response
|
||||
//! ```
|
||||
|
||||
fn main() {
|
||||
// this examples requires reqwest to be updated to hyper and http 1.0
|
||||
use std::{convert::Infallible, time::Duration};
|
||||
|
||||
use axum::http::{HeaderMap, StatusCode};
|
||||
use axum::{
|
||||
body::{Body, Bytes},
|
||||
extract::State,
|
||||
http::{HeaderName, HeaderValue},
|
||||
response::{IntoResponse, Response},
|
||||
routing::get,
|
||||
Router,
|
||||
};
|
||||
use reqwest::Client;
|
||||
use tokio_stream::StreamExt;
|
||||
use tower_http::trace::TraceLayer;
|
||||
use tracing::Span;
|
||||
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() {
|
||||
tracing_subscriber::registry()
|
||||
.with(
|
||||
tracing_subscriber::EnvFilter::try_from_default_env()
|
||||
.unwrap_or_else(|_| "example_reqwest_response=debug,tower_http=debug".into()),
|
||||
)
|
||||
.with(tracing_subscriber::fmt::layer())
|
||||
.init();
|
||||
|
||||
let client = Client::new();
|
||||
|
||||
let app = Router::new()
|
||||
.route("/", get(proxy_via_reqwest))
|
||||
.route("/stream", get(stream_some_data))
|
||||
// Add some logging so we can see the streams going through
|
||||
.layer(TraceLayer::new_for_http().on_body_chunk(
|
||||
|chunk: &Bytes, _latency: Duration, _span: &Span| {
|
||||
tracing::debug!("streaming {} bytes", chunk.len());
|
||||
},
|
||||
))
|
||||
.with_state(client);
|
||||
|
||||
let listener = tokio::net::TcpListener::bind("127.0.0.1:3000")
|
||||
.await
|
||||
.unwrap();
|
||||
tracing::debug!("listening on {}", listener.local_addr().unwrap());
|
||||
axum::serve(listener, app).await.unwrap();
|
||||
}
|
||||
|
||||
// use std::{convert::Infallible, time::Duration};
|
||||
async fn proxy_via_reqwest(State(client): State<Client>) -> Response {
|
||||
let reqwest_response = match client.get("http://127.0.0.1:3000/stream").send().await {
|
||||
Ok(res) => res,
|
||||
Err(err) => {
|
||||
tracing::error!(%err, "request failed");
|
||||
return (StatusCode::BAD_REQUEST, Body::empty()).into_response();
|
||||
}
|
||||
};
|
||||
|
||||
// use axum::{
|
||||
// body::{Body, Bytes},
|
||||
// extract::State,
|
||||
// response::{IntoResponse, Response},
|
||||
// routing::get,
|
||||
// Router,
|
||||
// };
|
||||
// use reqwest::{Client, StatusCode};
|
||||
// use tokio_stream::StreamExt;
|
||||
// use tower_http::trace::TraceLayer;
|
||||
// use tracing::Span;
|
||||
// use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
|
||||
let response_builder = Response::builder().status(reqwest_response.status().as_u16());
|
||||
|
||||
// #[tokio::main]
|
||||
// async fn main() {
|
||||
// tracing_subscriber::registry()
|
||||
// .with(
|
||||
// tracing_subscriber::EnvFilter::try_from_default_env()
|
||||
// .unwrap_or_else(|_| "example_reqwest_response=debug,tower_http=debug".into()),
|
||||
// )
|
||||
// .with(tracing_subscriber::fmt::layer())
|
||||
// .init();
|
||||
// here the mapping of headers is required due to reqwest and axum differ on http crate versions
|
||||
let mut headers = HeaderMap::with_capacity(reqwest_response.headers().len());
|
||||
headers.extend(reqwest_response.headers().into_iter().map(|(name, value)| {
|
||||
let name = HeaderName::from_bytes(name.as_ref()).unwrap();
|
||||
let value = HeaderValue::from_bytes(value.as_ref()).unwrap();
|
||||
(name, value)
|
||||
}));
|
||||
|
||||
// let client = Client::new();
|
||||
response_builder
|
||||
.body(Body::from_stream(reqwest_response.bytes_stream()))
|
||||
// Same goes for this unwrap
|
||||
.unwrap()
|
||||
}
|
||||
|
||||
// let app = Router::new()
|
||||
// .route("/", get(proxy_via_reqwest))
|
||||
// .route("/stream", get(stream_some_data))
|
||||
// // Add some logging so we can see the streams going through
|
||||
// .layer(TraceLayer::new_for_http().on_body_chunk(
|
||||
// |chunk: &Bytes, _latency: Duration, _span: &Span| {
|
||||
// tracing::debug!("streaming {} bytes", chunk.len());
|
||||
// },
|
||||
// ))
|
||||
// .with_state(client);
|
||||
|
||||
// let listener = tokio::net::TcpListener::bind("127.0.0.1:3000")
|
||||
// .await
|
||||
// .unwrap();
|
||||
// tracing::debug!("listening on {}", listener.local_addr().unwrap());
|
||||
// axum::serve(listener, app).await.unwrap();
|
||||
// }
|
||||
|
||||
// async fn proxy_via_reqwest(State(client): State<Client>) -> Response {
|
||||
// let reqwest_response = match client.get("http://127.0.0.1:3000/stream").send().await {
|
||||
// Ok(res) => res,
|
||||
// Err(err) => {
|
||||
// tracing::error!(%err, "request failed");
|
||||
// return StatusCode::BAD_GATEWAY.into_response();
|
||||
// }
|
||||
// };
|
||||
|
||||
// let mut response_builder = Response::builder().status(reqwest_response.status());
|
||||
|
||||
// // This unwrap is fine because we haven't insert any headers yet so there can't be any invalid
|
||||
// // headers
|
||||
// *response_builder.headers_mut().unwrap() = reqwest_response.headers().clone();
|
||||
|
||||
// response_builder
|
||||
// .body(Body::from_stream(reqwest_response.bytes_stream()))
|
||||
// // Same goes for this unwrap
|
||||
// .unwrap()
|
||||
// }
|
||||
|
||||
// async fn stream_some_data() -> Body {
|
||||
// let stream = tokio_stream::iter(0..5)
|
||||
// .throttle(Duration::from_secs(1))
|
||||
// .map(|n| n.to_string())
|
||||
// .map(Ok::<_, Infallible>);
|
||||
// Body::from_stream(stream)
|
||||
// }
|
||||
async fn stream_some_data() -> Body {
|
||||
let stream = tokio_stream::iter(0..5)
|
||||
.throttle(Duration::from_secs(1))
|
||||
.map(|n| n.to_string())
|
||||
.map(Ok::<_, Infallible>);
|
||||
Body::from_stream(stream)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue