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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
// Copyright 2023 Sean McArthur <sean@seanmonstar.com>
// MIT licensed copy of unreleased hyper-util code from
// https://raw.githubusercontent.com/hyperium/hyper-util/master/src/rt/tokio_io.rs
#![allow(dead_code)]
//! Tokio IO integration for hyper
use hyper1 as hyper;
use std::pin::Pin;
use std::task::Context;
use std::task::Poll;
use pin_project::pin_project;
/// A wrapping implementing hyper IO traits for a type that
/// implements Tokio's IO traits.
#[pin_project]
#[derive(Debug)]
pub struct TokioIo<T> {
#[pin]
inner: T,
}
impl<T> TokioIo<T> {
/// Wrap a type implementing Tokio's IO traits.
pub fn new(inner: T) -> Self {
Self { inner }
}
/// Borrow the inner type.
pub fn inner(&self) -> &T {
&self.inner
}
/// Consume this wrapper and get the inner type.
pub fn into_inner(self) -> T {
self.inner
}
}
impl<T> hyper::rt::Read for TokioIo<T>
where
T: tokio::io::AsyncRead,
{
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
mut buf: hyper::rt::ReadBufCursor<'_>,
) -> Poll<Result<(), std::io::Error>> {
// SAFETY: Imported code from hyper-util
let n = unsafe {
let mut tbuf = tokio::io::ReadBuf::uninit(buf.as_mut());
match tokio::io::AsyncRead::poll_read(self.project().inner, cx, &mut tbuf)
{
Poll::Ready(Ok(())) => tbuf.filled().len(),
other => return other,
}
};
// SAFETY: Imported code from hyper-util
unsafe {
buf.advance(n);
}
Poll::Ready(Ok(()))
}
}
impl<T> hyper::rt::Write for TokioIo<T>
where
T: tokio::io::AsyncWrite,
{
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<Result<usize, std::io::Error>> {
tokio::io::AsyncWrite::poll_write(self.project().inner, cx, buf)
}
fn poll_flush(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), std::io::Error>> {
tokio::io::AsyncWrite::poll_flush(self.project().inner, cx)
}
fn poll_shutdown(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), std::io::Error>> {
tokio::io::AsyncWrite::poll_shutdown(self.project().inner, cx)
}
fn is_write_vectored(&self) -> bool {
tokio::io::AsyncWrite::is_write_vectored(&self.inner)
}
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[std::io::IoSlice<'_>],
) -> Poll<Result<usize, std::io::Error>> {
tokio::io::AsyncWrite::poll_write_vectored(self.project().inner, cx, bufs)
}
}
impl<T> tokio::io::AsyncRead for TokioIo<T>
where
T: hyper::rt::Read,
{
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
tbuf: &mut tokio::io::ReadBuf<'_>,
) -> Poll<Result<(), std::io::Error>> {
//let init = tbuf.initialized().len();
let filled = tbuf.filled().len();
// SAFETY: Imported code from hyper-util
let sub_filled = unsafe {
let mut buf = hyper::rt::ReadBuf::uninit(tbuf.unfilled_mut());
match hyper::rt::Read::poll_read(self.project().inner, cx, buf.unfilled())
{
Poll::Ready(Ok(())) => buf.filled().len(),
other => return other,
}
};
let n_filled = filled + sub_filled;
// At least sub_filled bytes had to have been initialized.
let n_init = sub_filled;
// SAFETY: Imported code from hyper-util
unsafe {
tbuf.assume_init(n_init);
tbuf.set_filled(n_filled);
}
Poll::Ready(Ok(()))
}
}
impl<T> tokio::io::AsyncWrite for TokioIo<T>
where
T: hyper::rt::Write,
{
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<Result<usize, std::io::Error>> {
hyper::rt::Write::poll_write(self.project().inner, cx, buf)
}
fn poll_flush(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), std::io::Error>> {
hyper::rt::Write::poll_flush(self.project().inner, cx)
}
fn poll_shutdown(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), std::io::Error>> {
hyper::rt::Write::poll_shutdown(self.project().inner, cx)
}
fn is_write_vectored(&self) -> bool {
hyper::rt::Write::is_write_vectored(&self.inner)
}
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[std::io::IoSlice<'_>],
) -> Poll<Result<usize, std::io::Error>> {
hyper::rt::Write::poll_write_vectored(self.project().inner, cx, bufs)
}
}
/// A wrapping implementing Tokio IO traits for a type that
/// implements Hyper's IO traits.
#[pin_project]
#[derive(Debug)]
pub struct TokioIoForHyper<T> {
#[pin]
inner: T,
}
impl<T> TokioIoForHyper<T> {
/// Wrap a type implementing Tokio's IO traits.
pub fn new(inner: T) -> Self {
Self { inner }
}
/// Borrow the inner type.
pub fn inner(&self) -> &T {
&self.inner
}
/// Consume this wrapper and get the inner type.
pub fn into_inner(self) -> T {
self.inner
}
}
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