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lib.rs
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pub mod bindings {
wit_bindgen_wrpc::generate!({
world: "interfaces",
generate_all,
});
}
#[cfg(feature = "http")]
pub fn try_fields_to_header_map(
fields: bindings::wrpc::http::types::Fields,
) -> anyhow::Result<http::HeaderMap> {
use anyhow::Context as _;
let mut headers = http::HeaderMap::new();
for (name, values) in fields {
let name: http::HeaderName = name.parse().context("failed to parse header name")?;
let http::header::Entry::Vacant(entry) = headers.entry(name) else {
anyhow::bail!("duplicate header entry");
};
let Some((first, values)) = values.split_first() else {
continue;
};
let first = first
.as_ref()
.try_into()
.context("failed to construct header value")?;
let mut entry = entry.insert_entry(first);
for value in values {
let value = value
.as_ref()
.try_into()
.context("failed to construct header value")?;
entry.append(value);
}
}
Ok(headers)
}
#[cfg(feature = "http")]
pub fn try_header_map_to_fields(
headers: http::HeaderMap,
) -> anyhow::Result<bindings::wrpc::http::types::Fields> {
use anyhow::Context as _;
let headers_len = headers.keys_len();
headers
.into_iter()
.try_fold(
Vec::with_capacity(headers_len),
|mut headers, (name, value)| {
if let Some(name) = name {
headers.push((name.to_string(), vec![value.as_bytes().to_vec().into()]));
} else {
let (_, ref mut values) = headers
.last_mut()
.context("header name missing and fields are empty")?;
values.push(value.as_bytes().to_vec().into());
}
anyhow::Ok(headers)
},
)
.context("failed to construct fields")
}
#[cfg(feature = "http")]
impl From<&http::Method> for bindings::wrpc::http::types::Method {
fn from(method: &http::Method) -> Self {
match method.as_str() {
"GET" => Self::Get,
"HEAD" => Self::Head,
"POST" => Self::Post,
"PUT" => Self::Put,
"DELETE" => Self::Delete,
"CONNECT" => Self::Connect,
"OPTIONS" => Self::Options,
"TRACE" => Self::Trace,
"PATCH" => Self::Patch,
_ => Self::Other(method.to_string()),
}
}
}
#[cfg(feature = "http")]
impl TryFrom<&bindings::wrpc::http::types::Method> for http::method::Method {
type Error = http::method::InvalidMethod;
fn try_from(method: &bindings::wrpc::http::types::Method) -> Result<Self, Self::Error> {
use bindings::wrpc::http::types::Method;
match method {
Method::Get => Ok(Self::GET),
Method::Head => Ok(Self::HEAD),
Method::Post => Ok(Self::POST),
Method::Put => Ok(Self::PUT),
Method::Delete => Ok(Self::DELETE),
Method::Connect => Ok(Self::CONNECT),
Method::Options => Ok(Self::OPTIONS),
Method::Trace => Ok(Self::TRACE),
Method::Patch => Ok(Self::PATCH),
Method::Other(method) => method.parse(),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::Method>
for bindings::wrpc::http::types::Method
{
fn from(method: wasmtime_wasi_http::bindings::http::types::Method) -> Self {
match method {
wasmtime_wasi_http::bindings::http::types::Method::Get => Self::Get,
wasmtime_wasi_http::bindings::http::types::Method::Head => Self::Head,
wasmtime_wasi_http::bindings::http::types::Method::Post => Self::Post,
wasmtime_wasi_http::bindings::http::types::Method::Put => Self::Put,
wasmtime_wasi_http::bindings::http::types::Method::Delete => Self::Delete,
wasmtime_wasi_http::bindings::http::types::Method::Connect => Self::Connect,
wasmtime_wasi_http::bindings::http::types::Method::Options => Self::Options,
wasmtime_wasi_http::bindings::http::types::Method::Trace => Self::Trace,
wasmtime_wasi_http::bindings::http::types::Method::Patch => Self::Patch,
wasmtime_wasi_http::bindings::http::types::Method::Other(other) => Self::Other(other),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wrpc::http::types::Method>
for wasmtime_wasi_http::bindings::http::types::Method
{
fn from(method: bindings::wrpc::http::types::Method) -> Self {
use bindings::wrpc::http::types::Method;
match method {
Method::Get => Self::Get,
Method::Head => Self::Head,
Method::Post => Self::Post,
Method::Put => Self::Put,
Method::Delete => Self::Delete,
Method::Connect => Self::Connect,
Method::Options => Self::Options,
Method::Trace => Self::Trace,
Method::Patch => Self::Patch,
Method::Other(other) => Self::Other(other),
}
}
}
#[cfg(feature = "http")]
impl From<&http::uri::Scheme> for bindings::wrpc::http::types::Scheme {
fn from(scheme: &http::uri::Scheme) -> Self {
match scheme.as_str() {
"http" => Self::Http,
"https" => Self::Https,
_ => Self::Other(scheme.to_string()),
}
}
}
#[cfg(feature = "http")]
impl TryFrom<&bindings::wrpc::http::types::Scheme> for http::uri::Scheme {
type Error = http::uri::InvalidUri;
fn try_from(scheme: &bindings::wrpc::http::types::Scheme) -> Result<Self, Self::Error> {
use bindings::wrpc::http::types::Scheme;
match scheme {
Scheme::Http => Ok(Self::HTTP),
Scheme::Https => Ok(Self::HTTPS),
Scheme::Other(scheme) => scheme.parse(),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::Scheme>
for bindings::wrpc::http::types::Scheme
{
fn from(scheme: wasmtime_wasi_http::bindings::http::types::Scheme) -> Self {
match scheme {
wasmtime_wasi_http::bindings::http::types::Scheme::Http => Self::Http,
wasmtime_wasi_http::bindings::http::types::Scheme::Https => Self::Https,
wasmtime_wasi_http::bindings::http::types::Scheme::Other(other) => Self::Other(other),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wrpc::http::types::Scheme>
for wasmtime_wasi_http::bindings::http::types::Scheme
{
fn from(scheme: bindings::wrpc::http::types::Scheme) -> Self {
use bindings::wrpc::http::types::Scheme;
match scheme {
Scheme::Http => Self::Http,
Scheme::Https => Self::Https,
Scheme::Other(other) => Self::Other(other),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::DnsErrorPayload>
for bindings::wasi::http::types::DnsErrorPayload
{
fn from(
wasmtime_wasi_http::bindings::http::types::DnsErrorPayload { rcode, info_code }: wasmtime_wasi_http::bindings::http::types::DnsErrorPayload,
) -> Self {
Self { rcode, info_code }
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wasi::http::types::DnsErrorPayload>
for wasmtime_wasi_http::bindings::http::types::DnsErrorPayload
{
fn from(
bindings::wasi::http::types::DnsErrorPayload { rcode, info_code }: bindings::wasi::http::types::DnsErrorPayload,
) -> Self {
Self { rcode, info_code }
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::TlsAlertReceivedPayload>
for bindings::wasi::http::types::TlsAlertReceivedPayload
{
fn from(
wasmtime_wasi_http::bindings::http::types::TlsAlertReceivedPayload {
alert_id,
alert_message,
}: wasmtime_wasi_http::bindings::http::types::TlsAlertReceivedPayload,
) -> Self {
Self {
alert_id,
alert_message,
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wasi::http::types::TlsAlertReceivedPayload>
for wasmtime_wasi_http::bindings::http::types::TlsAlertReceivedPayload
{
fn from(
bindings::wasi::http::types::TlsAlertReceivedPayload {
alert_id,
alert_message,
}: bindings::wasi::http::types::TlsAlertReceivedPayload,
) -> Self {
Self {
alert_id,
alert_message,
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::FieldSizePayload>
for bindings::wasi::http::types::FieldSizePayload
{
fn from(
wasmtime_wasi_http::bindings::http::types::FieldSizePayload {
field_name,
field_size,
}: wasmtime_wasi_http::bindings::http::types::FieldSizePayload,
) -> Self {
Self {
field_name,
field_size,
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wasi::http::types::FieldSizePayload>
for wasmtime_wasi_http::bindings::http::types::FieldSizePayload
{
fn from(
bindings::wasi::http::types::FieldSizePayload {
field_name,
field_size,
}: bindings::wasi::http::types::FieldSizePayload,
) -> Self {
Self {
field_name,
field_size,
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<wasmtime_wasi_http::bindings::http::types::ErrorCode>
for bindings::wasi::http::types::ErrorCode
{
fn from(code: wasmtime_wasi_http::bindings::http::types::ErrorCode) -> Self {
use wasmtime_wasi_http::bindings::http::types;
match code {
types::ErrorCode::DnsTimeout => Self::DnsTimeout,
types::ErrorCode::DnsError(err) => Self::DnsError(err.into()),
types::ErrorCode::DestinationNotFound => Self::DestinationNotFound,
types::ErrorCode::DestinationUnavailable => Self::DestinationUnavailable,
types::ErrorCode::DestinationIpProhibited => Self::DestinationIpProhibited,
types::ErrorCode::DestinationIpUnroutable => Self::DestinationIpUnroutable,
types::ErrorCode::ConnectionRefused => Self::ConnectionRefused,
types::ErrorCode::ConnectionTerminated => Self::ConnectionTerminated,
types::ErrorCode::ConnectionTimeout => Self::ConnectionTimeout,
types::ErrorCode::ConnectionReadTimeout => Self::ConnectionReadTimeout,
types::ErrorCode::ConnectionWriteTimeout => Self::ConnectionWriteTimeout,
types::ErrorCode::ConnectionLimitReached => Self::ConnectionLimitReached,
types::ErrorCode::TlsProtocolError => Self::TlsProtocolError,
types::ErrorCode::TlsCertificateError => Self::TlsCertificateError,
types::ErrorCode::TlsAlertReceived(err) => Self::TlsAlertReceived(err.into()),
types::ErrorCode::HttpRequestDenied => Self::HttpRequestDenied,
types::ErrorCode::HttpRequestLengthRequired => Self::HttpRequestLengthRequired,
types::ErrorCode::HttpRequestBodySize(size) => Self::HttpRequestBodySize(size),
types::ErrorCode::HttpRequestMethodInvalid => Self::HttpRequestMethodInvalid,
types::ErrorCode::HttpRequestUriInvalid => Self::HttpRequestUriInvalid,
types::ErrorCode::HttpRequestUriTooLong => Self::HttpRequestUriTooLong,
types::ErrorCode::HttpRequestHeaderSectionSize(err) => {
Self::HttpRequestHeaderSectionSize(err)
}
types::ErrorCode::HttpRequestHeaderSize(err) => {
Self::HttpRequestHeaderSize(err.map(Into::into))
}
types::ErrorCode::HttpRequestTrailerSectionSize(err) => {
Self::HttpRequestTrailerSectionSize(err)
}
types::ErrorCode::HttpRequestTrailerSize(err) => {
Self::HttpRequestTrailerSize(err.into())
}
types::ErrorCode::HttpResponseIncomplete => Self::HttpResponseIncomplete,
types::ErrorCode::HttpResponseHeaderSectionSize(err) => {
Self::HttpResponseHeaderSectionSize(err)
}
types::ErrorCode::HttpResponseHeaderSize(err) => {
Self::HttpResponseHeaderSize(err.into())
}
types::ErrorCode::HttpResponseBodySize(err) => Self::HttpResponseBodySize(err),
types::ErrorCode::HttpResponseTrailerSectionSize(err) => {
Self::HttpResponseTrailerSectionSize(err)
}
types::ErrorCode::HttpResponseTrailerSize(err) => {
Self::HttpResponseTrailerSize(err.into())
}
types::ErrorCode::HttpResponseTransferCoding(err) => {
Self::HttpResponseTransferCoding(err)
}
types::ErrorCode::HttpResponseContentCoding(err) => {
Self::HttpResponseContentCoding(err)
}
types::ErrorCode::HttpResponseTimeout => Self::HttpResponseTimeout,
types::ErrorCode::HttpUpgradeFailed => Self::HttpUpgradeFailed,
types::ErrorCode::HttpProtocolError => Self::HttpProtocolError,
types::ErrorCode::LoopDetected => Self::LoopDetected,
types::ErrorCode::ConfigurationError => Self::ConfigurationError,
types::ErrorCode::InternalError(err) => Self::InternalError(err),
}
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl From<bindings::wasi::http::types::ErrorCode>
for wasmtime_wasi_http::bindings::http::types::ErrorCode
{
fn from(code: bindings::wasi::http::types::ErrorCode) -> Self {
use bindings::wasi::http::types::ErrorCode;
match code {
ErrorCode::DnsTimeout => Self::DnsTimeout,
ErrorCode::DnsError(err) => Self::DnsError(err.into()),
ErrorCode::DestinationNotFound => Self::DestinationNotFound,
ErrorCode::DestinationUnavailable => Self::DestinationUnavailable,
ErrorCode::DestinationIpProhibited => Self::DestinationIpProhibited,
ErrorCode::DestinationIpUnroutable => Self::DestinationIpUnroutable,
ErrorCode::ConnectionRefused => Self::ConnectionRefused,
ErrorCode::ConnectionTerminated => Self::ConnectionTerminated,
ErrorCode::ConnectionTimeout => Self::ConnectionTimeout,
ErrorCode::ConnectionReadTimeout => Self::ConnectionReadTimeout,
ErrorCode::ConnectionWriteTimeout => Self::ConnectionWriteTimeout,
ErrorCode::ConnectionLimitReached => Self::ConnectionLimitReached,
ErrorCode::TlsProtocolError => Self::TlsProtocolError,
ErrorCode::TlsCertificateError => Self::TlsCertificateError,
ErrorCode::TlsAlertReceived(err) => Self::TlsAlertReceived(err.into()),
ErrorCode::HttpRequestDenied => Self::HttpRequestDenied,
ErrorCode::HttpRequestLengthRequired => Self::HttpRequestLengthRequired,
ErrorCode::HttpRequestBodySize(size) => Self::HttpRequestBodySize(size),
ErrorCode::HttpRequestMethodInvalid => Self::HttpRequestMethodInvalid,
ErrorCode::HttpRequestUriInvalid => Self::HttpRequestUriInvalid,
ErrorCode::HttpRequestUriTooLong => Self::HttpRequestUriTooLong,
ErrorCode::HttpRequestHeaderSectionSize(err) => Self::HttpRequestHeaderSectionSize(err),
ErrorCode::HttpRequestHeaderSize(err) => {
Self::HttpRequestHeaderSize(err.map(Into::into))
}
ErrorCode::HttpRequestTrailerSectionSize(err) => {
Self::HttpRequestTrailerSectionSize(err)
}
ErrorCode::HttpRequestTrailerSize(err) => Self::HttpRequestTrailerSize(err.into()),
ErrorCode::HttpResponseIncomplete => Self::HttpResponseIncomplete,
ErrorCode::HttpResponseHeaderSectionSize(err) => {
Self::HttpResponseHeaderSectionSize(err)
}
ErrorCode::HttpResponseHeaderSize(err) => Self::HttpResponseHeaderSize(err.into()),
ErrorCode::HttpResponseBodySize(err) => Self::HttpResponseBodySize(err),
ErrorCode::HttpResponseTrailerSectionSize(err) => {
Self::HttpResponseTrailerSectionSize(err)
}
ErrorCode::HttpResponseTrailerSize(err) => Self::HttpResponseTrailerSize(err.into()),
ErrorCode::HttpResponseTransferCoding(err) => Self::HttpResponseTransferCoding(err),
ErrorCode::HttpResponseContentCoding(err) => Self::HttpResponseContentCoding(err),
ErrorCode::HttpResponseTimeout => Self::HttpResponseTimeout,
ErrorCode::HttpUpgradeFailed => Self::HttpUpgradeFailed,
ErrorCode::HttpProtocolError => Self::HttpProtocolError,
ErrorCode::LoopDetected => Self::LoopDetected,
ErrorCode::ConfigurationError => Self::ConfigurationError,
ErrorCode::InternalError(err) => Self::InternalError(err),
}
}
}
#[cfg(feature = "http-body")]
pub struct HttpBody {
pub body: core::pin::Pin<Box<dyn futures::Stream<Item = bytes::Bytes> + Send>>,
pub trailers: core::pin::Pin<
Box<dyn core::future::Future<Output = Option<bindings::wrpc::http::types::Fields>> + Send>,
>,
}
#[cfg(feature = "http-body")]
impl http_body::Body for HttpBody {
type Data = bytes::Bytes;
type Error = anyhow::Error;
fn poll_frame(
mut self: core::pin::Pin<&mut Self>,
cx: &mut core::task::Context<'_>,
) -> core::task::Poll<Option<Result<http_body::Frame<Self::Data>, Self::Error>>> {
use anyhow::Context as _;
use core::task::Poll;
use futures::{FutureExt as _, StreamExt as _};
match self.body.poll_next_unpin(cx) {
Poll::Pending => Poll::Pending,
Poll::Ready(Some(buf)) => Poll::Ready(Some(Ok(http_body::Frame::data(buf)))),
Poll::Ready(None) => match self.trailers.poll_unpin(cx) {
Poll::Pending => Poll::Pending,
Poll::Ready(None) => Poll::Ready(None),
Poll::Ready(Some(trailers)) => {
let trailers = try_fields_to_header_map(trailers)
.context("failed to convert trailer fields to header map")?;
Poll::Ready(Some(Ok(http_body::Frame::trailers(trailers))))
}
},
}
}
}
#[cfg(feature = "http-body")]
pub enum HttpBodyError<E> {
InvalidFrame,
TrailerReceiverClosed,
HeaderConversion(anyhow::Error),
Body(E),
}
#[cfg(feature = "http-body")]
impl<E: core::fmt::Debug> core::fmt::Debug for HttpBodyError<E> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
match self {
Self::InvalidFrame => write!(f, "frame is not valid"),
Self::TrailerReceiverClosed => write!(f, "trailer receiver is closed"),
Self::HeaderConversion(err) => write!(f, "failed to convert headers: {err:#}"),
Self::Body(err) => write!(f, "encountered a body error: {err:?}"),
}
}
}
#[cfg(feature = "http-body")]
impl<E: core::fmt::Display> core::fmt::Display for HttpBodyError<E> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
match self {
Self::InvalidFrame => write!(f, "frame is not valid"),
Self::TrailerReceiverClosed => write!(f, "trailer receiver is closed"),
Self::HeaderConversion(err) => write!(f, "failed to convert headers: {err:#}"),
Self::Body(err) => write!(f, "encountered a body error: {err}"),
}
}
}
#[cfg(feature = "http-body")]
impl<E: core::fmt::Debug + core::fmt::Display> std::error::Error for HttpBodyError<E> {}
#[cfg(feature = "http-body")]
#[tracing::instrument(level = "trace", skip_all)]
pub fn split_http_body<E>(
body: impl http_body::Body<Data = bytes::Bytes, Error = E>,
) -> (
impl futures::Stream<Item = Result<bytes::Bytes, HttpBodyError<E>>>,
impl core::future::Future<Output = Option<bindings::wrpc::http::types::Fields>>,
) {
use futures::StreamExt as _;
let (trailers_tx, mut trailers_rx) = tokio::sync::mpsc::channel(1);
let body = http_body_util::BodyStream::new(body).filter_map(move |frame| {
let trailers_tx = trailers_tx.clone();
async move {
match frame {
Ok(frame) => match frame.into_data() {
Ok(buf) => Some(Ok(buf)),
Err(trailers) => match trailers.into_trailers() {
Ok(trailers) => match try_header_map_to_fields(trailers) {
Ok(trailers) => {
if trailers_tx.send(trailers).await.is_err() {
Some(Err(HttpBodyError::TrailerReceiverClosed))
} else {
None
}
}
Err(err) => Some(Err(HttpBodyError::HeaderConversion(err))),
},
Err(_) => Some(Err(HttpBodyError::InvalidFrame)),
},
},
Err(err) => Some(Err(HttpBodyError::Body(err))),
}
}
});
let trailers = async move { trailers_rx.recv().await };
(body, trailers)
}
#[cfg(feature = "http-body")]
#[tracing::instrument(level = "trace", skip_all)]
pub fn split_outgoing_http_body<E>(
body: impl http_body::Body<Data = bytes::Bytes, Error = E>,
) -> (
impl futures::Stream<Item = bytes::Bytes>,
impl core::future::Future<Output = Option<bindings::wrpc::http::types::Fields>>,
impl futures::Stream<Item = HttpBodyError<E>>,
) {
use futures::StreamExt as _;
let (body, trailers) = split_http_body(body);
let (errors_tx, errors_rx) = tokio::sync::mpsc::channel(1);
let body = body.filter_map(move |res| {
let errors_tx = errors_tx.clone();
async move {
match res {
Ok(buf) => Some(buf),
Err(err) => {
if errors_tx.send(err).await.is_err() {
tracing::trace!("failed to send body error");
}
None
}
}
}
});
let errors_rx = tokio_stream::wrappers::ReceiverStream::new(errors_rx);
(body, trailers, errors_rx)
}
#[cfg(feature = "http-body")]
impl TryFrom<bindings::wrpc::http::types::Request> for http::Request<HttpBody> {
type Error = anyhow::Error;
fn try_from(
bindings::wrpc::http::types::Request {
body,
trailers,
method,
path_with_query,
scheme,
authority,
headers,
}: bindings::wrpc::http::types::Request,
) -> Result<Self, Self::Error> {
use anyhow::Context as _;
let uri = http::Uri::builder();
let uri = if let Some(path_with_query) = path_with_query {
uri.path_and_query(path_with_query)
} else {
uri.path_and_query("/")
};
let uri = if let Some(scheme) = scheme {
let scheme =
http::uri::Scheme::try_from(&scheme).context("failed to convert scheme")?;
uri.scheme(scheme)
} else {
uri
};
let uri = if let Some(authority) = authority {
uri.authority(authority)
} else {
uri
};
let uri = uri.build().context("failed to build URI")?;
let method = http::method::Method::try_from(&method).context("failed to convert method")?;
let mut req = http::Request::builder().method(method).uri(uri);
let req_headers = req
.headers_mut()
.context("failed to construct header map")?;
*req_headers = try_fields_to_header_map(headers)
.context("failed to convert header fields to header map")?;
req.body(HttpBody { body, trailers })
.context("failed to construct request")
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl TryFrom<bindings::wrpc::http::types::Request>
for http::Request<
http_body_util::combinators::UnsyncBoxBody<
bytes::Bytes,
wasmtime_wasi_http::bindings::http::types::ErrorCode,
>,
>
{
type Error = anyhow::Error;
fn try_from(req: bindings::wrpc::http::types::Request) -> Result<Self, Self::Error> {
use http_body_util::BodyExt as _;
let req: http::Request<HttpBody> = req.try_into()?;
Ok(req.map(|HttpBody { body, trailers }| {
http_body_util::combinators::UnsyncBoxBody::new(HttpBody { body, trailers }.map_err(
|err| {
wasmtime_wasi_http::bindings::http::types::ErrorCode::InternalError(Some(
format!("{err:#}"),
))
},
))
}))
}
}
#[cfg(feature = "wasmtime-wasi-http")]
struct SyncBody<D, E>(std::sync::Mutex<http_body_util::combinators::UnsyncBoxBody<D, E>>);
#[cfg(feature = "wasmtime-wasi-http")]
impl<D: bytes::Buf, E> http_body::Body for SyncBody<D, E> {
type Data = D;
type Error = E;
fn poll_frame(
self: core::pin::Pin<&mut Self>,
cx: &mut core::task::Context<'_>,
) -> core::task::Poll<Option<Result<http_body::Frame<Self::Data>, Self::Error>>> {
let mut body = self.0.lock().unwrap();
core::pin::pin!(&mut *body).poll_frame(cx)
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl TryFrom<bindings::wrpc::http::types::Request>
for http::Request<
http_body_util::combinators::BoxBody<
bytes::Bytes,
wasmtime_wasi_http::bindings::http::types::ErrorCode,
>,
>
{
type Error = anyhow::Error;
fn try_from(req: bindings::wrpc::http::types::Request) -> Result<Self, Self::Error> {
let req: http::Request<http_body_util::combinators::UnsyncBoxBody<_, _>> =
req.try_into()?;
Ok(req.map(|body| {
http_body_util::combinators::BoxBody::new(SyncBody(std::sync::Mutex::new(body)))
}))
}
}
/// Attempt converting [`http::Request`] to [`Request`].
/// Values of `path_with_query`, `scheme` and `authority` will be taken from the
/// request URI
#[cfg(feature = "http-body")]
#[tracing::instrument(level = "trace", skip_all)]
pub fn try_http_to_request<E>(
request: http::Request<impl http_body::Body<Data = bytes::Bytes, Error = E> + Send + 'static>,
) -> anyhow::Result<(
bindings::wrpc::http::types::Request,
impl futures::Stream<Item = HttpBodyError<E>>,
)>
where
E: Send + 'static,
{
let (
http::request::Parts {
ref method,
uri,
headers,
..
},
body,
) = request.into_parts();
let headers = try_header_map_to_fields(headers)?;
let (body, trailers, errors) = split_outgoing_http_body(body);
Ok((
bindings::wrpc::http::types::Request {
body: Box::pin(body),
trailers: Box::pin(trailers),
method: method.into(),
path_with_query: uri.path_and_query().map(ToString::to_string),
scheme: uri.scheme().map(Into::into),
authority: uri.authority().map(ToString::to_string),
headers,
},
errors,
))
}
/// Attempt converting [`http::Request<wasmtime_wasi_http::body::HyperOutgoingBody>`] to [`bindings::wrpc::http::types::Request`].
/// Values of `path_with_query`, `scheme` and `authority` will be taken from the
/// request URI.
#[cfg(feature = "wasmtime-wasi-http")]
#[tracing::instrument(level = "trace", skip_all)]
pub fn try_wasmtime_to_outgoing_request(
req: http::Request<wasmtime_wasi_http::body::HyperOutgoingBody>,
wasmtime_wasi_http::types::OutgoingRequestConfig {
use_tls: _,
connect_timeout,
first_byte_timeout,
between_bytes_timeout,
}: wasmtime_wasi_http::types::OutgoingRequestConfig,
) -> anyhow::Result<(
bindings::wrpc::http::types::Request,
bindings::wrpc::http::types::RequestOptions,
impl futures::Stream<Item = HttpBodyError<wasmtime_wasi_http::bindings::http::types::ErrorCode>>
+ Send,
)> {
use anyhow::Context as _;
let (req, errors) = try_http_to_request(req)?;
let connect_timeout = connect_timeout
.as_nanos()
.try_into()
.context("`connect_timeout` nanoseconds do not fit in u64")?;
let first_byte_timeout = first_byte_timeout
.as_nanos()
.try_into()
.context("`first_byte_timeout` nanoseconds do not fit in u64")?;
let between_bytes_timeout = between_bytes_timeout
.as_nanos()
.try_into()
.context("`between_bytes_timeout` nanoseconds do not fit in u64")?;
Ok((
req,
bindings::wrpc::http::types::RequestOptions {
connect_timeout: Some(connect_timeout),
first_byte_timeout: Some(first_byte_timeout),
between_bytes_timeout: Some(between_bytes_timeout),
},
errors,
))
}
#[cfg(feature = "http-body")]
impl TryFrom<bindings::wrpc::http::types::Response> for http::Response<HttpBody> {
type Error = anyhow::Error;
fn try_from(
bindings::wrpc::http::types::Response {
body,
trailers,
status,
headers,
}: bindings::wrpc::http::types::Response,
) -> Result<Self, Self::Error> {
use anyhow::Context as _;
let mut resp = http::Response::builder().status(status);
let resp_headers = resp
.headers_mut()
.context("failed to construct header map")?;
*resp_headers = try_fields_to_header_map(headers)
.context("failed to convert header fields to header map")?;
resp.body(HttpBody { body, trailers })
.context("failed to construct response")
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl TryFrom<bindings::wrpc::http::types::Response>
for http::Response<
http_body_util::combinators::UnsyncBoxBody<
bytes::Bytes,
wasmtime_wasi_http::bindings::http::types::ErrorCode,
>,
>
{
type Error = anyhow::Error;
fn try_from(
bindings::wrpc::http::types::Response {
body,
trailers,
status,
headers,
}: bindings::wrpc::http::types::Response,
) -> Result<Self, Self::Error> {
use anyhow::Context as _;
use http_body_util::BodyExt as _;
let mut resp = http::Response::builder().status(status);
let resp_headers = resp
.headers_mut()
.context("failed to construct header map")?;
*resp_headers = try_fields_to_header_map(headers)
.context("failed to convert header fields to header map")?;
let trailers = tokio::spawn(trailers);
resp.body(http_body_util::combinators::UnsyncBoxBody::new(
HttpBody {
body,
trailers: Box::pin(async { trailers.await.unwrap() }),
}
.map_err(|err| {
wasmtime_wasi_http::bindings::http::types::ErrorCode::InternalError(Some(format!(
"{err:#}"
)))
}),
))
.context("failed to construct response")
}
}
#[cfg(feature = "wasmtime-wasi-http")]
impl TryFrom<bindings::wrpc::http::types::Response>
for http::Response<
http_body_util::combinators::BoxBody<
bytes::Bytes,
wasmtime_wasi_http::bindings::http::types::ErrorCode,
>,
>
{
type Error = anyhow::Error;
fn try_from(resp: bindings::wrpc::http::types::Response) -> Result<Self, Self::Error> {
let resp: http::Response<http_body_util::combinators::UnsyncBoxBody<_, _>> =
resp.try_into()?;
Ok(resp.map(|body| {
http_body_util::combinators::BoxBody::new(SyncBody(std::sync::Mutex::new(body)))
}))
}
}
#[cfg(feature = "http-body")]
#[tracing::instrument(level = "trace", skip_all)]
pub fn try_http_to_response<E>(
response: http::Response<impl http_body::Body<Data = bytes::Bytes, Error = E> + Send + 'static>,
) -> anyhow::Result<(
bindings::wrpc::http::types::Response,
impl futures::Stream<Item = HttpBodyError<E>>,
)>
where
E: Send + 'static,
{
let (
http::response::Parts {
status, headers, ..
},
body,
) = response.into_parts();
let headers = try_header_map_to_fields(headers)?;
let (body, trailers, errors) = split_outgoing_http_body(body);
Ok((
bindings::wrpc::http::types::Response {
body: Box::pin(body),
trailers: Box::pin(trailers),
status: status.into(),
headers,
},
errors,
))
}
pub trait InvokeIncomingHandler: wrpc_transport::Invoke {
#[cfg(feature = "http-body")]
#[tracing::instrument(level = "trace", skip_all)]
fn invoke_handle_http<E>(
&self,
cx: Self::Context,
request: http::Request<
impl http_body::Body<Data = bytes::Bytes, Error = E> + Send + 'static,
>,
) -> impl core::future::Future<
Output = anyhow::Result<(
Result<http::Response<HttpBody>, bindings::wrpc::http::types::ErrorCode>,
impl futures::Stream<Item = HttpBodyError<E>> + 'static,
Option<impl core::future::Future<Output = anyhow::Result<()>> + 'static>,
)>,
>
where
Self: Sized,
E: Send + 'static,
{
use anyhow::Context as _;
async {
let (request, errors) = try_http_to_request(request)
.context("failed to convert `http` request to `wrpc:http/types.request`")?;
let (response, io) = bindings::wrpc::http::incoming_handler::handle(self, cx, request)
.await
.context("failed to invoke `wrpc:http/incoming-handler.handle`")?;
match response {
Ok(response) => {
let response = response.try_into().context(
"failed to convert `wrpc:http/types.response` to `http` response",
)?;
Ok((Ok(response), errors, io))
}
Err(code) => Ok((Err(code), errors, io)),
}
}
}
}
impl<T: wrpc_transport::Invoke> InvokeIncomingHandler for T {}
pub trait InvokeOutgoingHandler: wrpc_transport::Invoke {
#[cfg(feature = "wasmtime-wasi-http")]
#[tracing::instrument(level = "trace", skip_all)]
fn invoke_handle_wasmtime(
&self,
cx: Self::Context,
request: http::Request<wasmtime_wasi_http::body::HyperOutgoingBody>,
options: wasmtime_wasi_http::types::OutgoingRequestConfig,
) -> impl core::future::Future<
Output = anyhow::Result<(
Result<
http::Response<wasmtime_wasi_http::body::HyperIncomingBody>,
wasmtime_wasi_http::bindings::http::types::ErrorCode,
>,
impl futures::Stream<
Item = HttpBodyError<wasmtime_wasi_http::bindings::http::types::ErrorCode>,
> + 'static,
Option<impl core::future::Future<Output = anyhow::Result<()>> + 'static>,
)>,
>
where
Self: Sized,
{
use anyhow::Context as _;
async {
let (req, opts, errors) = try_wasmtime_to_outgoing_request(request, options)?;
let (resp, io) =
bindings::wrpc::http::outgoing_handler::handle(self, cx, req, Some(opts))
.await
.context("failed to invoke `wrpc:http/outgoing-handler.handle`")?;
match resp {
Ok(resp) => {
let resp = resp.try_into().context(
"failed to convert `wrpc:http` response to Wasmtime `wasi:http`",
)?;
Ok((Ok(resp), errors, io))
}
Err(code) => Ok((Err(code.into()), errors, io)),
}
}
}
}
impl<T: wrpc_transport::Invoke> InvokeOutgoingHandler for T {}
#[cfg(feature = "http-body")]
#[derive(Copy, Clone, Debug)]
pub struct ServeHttp<T>(pub T);
#[cfg(feature = "http-body")]
pub trait ServeIncomingHandlerHttp<Ctx> {
fn handle(
&self,
cx: Ctx,
request: http::Request<HttpBody>,
) -> impl core::future::Future<
Output = anyhow::Result<
Result<
http::Response<
impl http_body::Body<Data = bytes::Bytes, Error = core::convert::Infallible>
+ Send
+ 'static,
>,
bindings::wasi::http::types::ErrorCode,
>,
>,
> + Send;
}
#[cfg(feature = "http-body")]
impl<Ctx, T> bindings::exports::wrpc::http::incoming_handler::Handler<Ctx> for ServeHttp<T>
where
T: ServeIncomingHandlerHttp<Ctx> + Sync,
Ctx: Send,
{
async fn handle(
&self,
cx: Ctx,
request: bindings::wrpc::http::types::Request,
) -> anyhow::Result<