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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| use bytes::{Bytes, BytesMut}; | ||
| use futures_util::Stream; | ||
| use http_body_util::{combinators::BoxBody, BodyExt, Full}; | ||
| use hyper::body::{Body, Incoming}; | ||
| use std::{ | ||
| pin::Pin, | ||
| task::{Context, Poll}, | ||
| }; | ||
| use tokio::io::AsyncRead; | ||
| use tokio_util::io::poll_read_buf; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct IncomingStream { | ||
| inner: Incoming, | ||
| } | ||
|
|
||
| impl IncomingStream { | ||
| pub fn new(inner: Incoming) -> Self { | ||
| Self { inner } | ||
| } | ||
| } | ||
|
|
||
| impl Stream for IncomingStream { | ||
| type Item = Result<Bytes, anyhow::Error>; | ||
|
|
||
| #[inline] | ||
| fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> { | ||
| loop { | ||
| match futures_util::ready!(Pin::new(&mut self.inner).poll_frame(cx)?) { | ||
| Some(frame) => match frame.into_data() { | ||
| Ok(data) => return Poll::Ready(Some(Ok(data))), | ||
| Err(_frame) => {} | ||
| }, | ||
| None => return Poll::Ready(None), | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| pin_project_lite::pin_project! { | ||
| pub struct LengthLimitedStream<R> { | ||
| #[pin] | ||
| reader: Option<R>, | ||
| remaining: usize, | ||
| buf: BytesMut, | ||
| capacity: usize, | ||
| } | ||
| } | ||
|
|
||
| impl<R> LengthLimitedStream<R> { | ||
| pub fn new(reader: R, limit: usize) -> Self { | ||
| Self { | ||
| reader: Some(reader), | ||
| remaining: limit, | ||
| buf: BytesMut::new(), | ||
| capacity: 4096, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<R: AsyncRead> Stream for LengthLimitedStream<R> { | ||
| type Item = std::io::Result<Bytes>; | ||
| fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> { | ||
| let mut this = self.as_mut().project(); | ||
|
|
||
| if *this.remaining == 0 { | ||
| self.project().reader.set(None); | ||
| return Poll::Ready(None); | ||
| } | ||
|
|
||
| let reader = match this.reader.as_pin_mut() { | ||
| Some(r) => r, | ||
| None => return Poll::Ready(None), | ||
| }; | ||
|
|
||
| if this.buf.capacity() == 0 { | ||
| this.buf.reserve(*this.capacity); | ||
| } | ||
|
|
||
| match poll_read_buf(reader, cx, &mut this.buf) { | ||
| Poll::Pending => Poll::Pending, | ||
| Poll::Ready(Err(err)) => { | ||
| self.project().reader.set(None); | ||
| Poll::Ready(Some(Err(err))) | ||
| } | ||
| Poll::Ready(Ok(0)) => { | ||
| self.project().reader.set(None); | ||
| Poll::Ready(None) | ||
| } | ||
| Poll::Ready(Ok(_)) => { | ||
| let mut chunk = this.buf.split(); | ||
| let chunk_size = (*this.remaining).min(chunk.len()); | ||
| chunk.truncate(chunk_size); | ||
| *this.remaining -= chunk_size; | ||
| Poll::Ready(Some(Ok(chunk.freeze()))) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| pub fn body_full(content: impl Into<hyper::body::Bytes>) -> BoxBody<Bytes, anyhow::Error> { | ||
| Full::new(content.into()) | ||
| .map_err(anyhow::Error::new) | ||
| .boxed() | ||
| } |
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