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use bytes::Bytes;
use futures_util::StreamExt;
use http::{header::HeaderName, HeaderMap, HeaderValue, StatusCode};
use crate::{
body::Body, proto::HrpcErrorIdentifier, BoxError, Request, Response, HRPC_CONTENT_MIMETYPE,
HRPC_SPEC_VERSION,
};
pub const HRPC_VERSION_HEADER: &str = "hrpc-version";
pub fn content_header_value() -> HeaderValue {
unsafe {
HeaderValue::from_maybe_shared_unchecked(Bytes::from_static(
HRPC_CONTENT_MIMETYPE.as_bytes(),
))
}
}
pub fn ws_version_header_value() -> HeaderValue {
unsafe { HeaderValue::from_maybe_shared_unchecked(ws_version().into_bytes()) }
}
pub fn ws_version() -> String {
format!("hrpc{}", HRPC_SPEC_VERSION)
}
pub fn version_header_value() -> HeaderValue {
unsafe {
HeaderValue::from_maybe_shared_unchecked(Bytes::from_static(HRPC_SPEC_VERSION.as_bytes()))
}
}
pub fn version_header_name() -> HeaderName {
HeaderName::from_static(HRPC_VERSION_HEADER)
}
pub trait HeaderMapExt {
fn header_eq(&self, key: &HeaderName, value: &[u8]) -> bool;
fn header_contains_str(&self, key: &HeaderName, value: &str) -> bool;
}
impl HeaderMapExt for HeaderMap {
fn header_eq(&self, key: &HeaderName, value: &[u8]) -> bool {
self.get(key).map_or(false, |header| {
header.as_bytes().eq_ignore_ascii_case(value)
})
}
fn header_contains_str(&self, key: &HeaderName, pat: &str) -> bool {
self.get(key).map_or(false, |header| {
header
.to_str()
.map_or(false, |value| value.to_ascii_lowercase().contains(pat))
})
}
}
impl_exts::impl_exts!(Request<T>);
impl_exts::impl_exts!(Response<T>);
impl<T> Request<T> {
#[inline]
pub fn http_method(&self) -> Option<&http::Method> {
self.extensions().get::<http::Method>()
}
#[inline]
pub fn http_version(&self) -> Option<&http::Version> {
self.extensions().get::<http::Version>()
}
#[inline]
pub fn http_uri(&self) -> Option<&http::Uri> {
self.extensions().get::<http::Uri>()
}
}
mod impl_exts {
macro_rules! impl_exts {
($t:ty) => {
impl<T> $t {
#[inline]
pub fn header_map(&self) -> Option<&HeaderMap> {
self.extensions().get::<HeaderMap>()
}
#[inline]
pub fn header_map_mut(&mut self) -> Option<&mut HeaderMap> {
self.extensions_mut().get_mut::<HeaderMap>()
}
#[inline]
pub fn get_or_insert_header_map(&mut self) -> &mut HeaderMap {
if !self.extensions().contains::<HeaderMap>() {
self.extensions_mut().insert(HeaderMap::new());
}
self.extensions_mut().get_mut::<HeaderMap>().unwrap()
}
#[inline]
pub fn http_extensions(&self) -> Option<&http::Extensions> {
self.extensions().get::<http::Extensions>()
}
#[inline]
pub fn http_extensions_mut(&mut self) -> Option<&mut http::Extensions> {
self.extensions_mut().get_mut::<http::Extensions>()
}
#[inline]
pub fn get_or_insert_http_extensions(&mut self) -> &mut http::Extensions {
if !self.extensions().contains::<http::Extensions>() {
self.extensions_mut().insert(http::Extensions::new());
}
self.extensions_mut().get_mut::<http::Extensions>().unwrap()
}
}
};
}
pub(crate) use impl_exts;
}
impl http_body::Body for Body {
type Data = Bytes;
type Error = BoxError;
fn poll_data(
mut self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> std::task::Poll<Option<Result<Self::Data, Self::Error>>> {
self.poll_next_unpin(cx)
}
fn poll_trailers(
self: std::pin::Pin<&mut Self>,
_cx: &mut std::task::Context<'_>,
) -> std::task::Poll<Result<Option<HeaderMap>, Self::Error>> {
std::task::Poll::Ready(Ok(None))
}
}
impl From<HrpcErrorIdentifier> for StatusCode {
fn from(id: HrpcErrorIdentifier) -> Self {
match id {
HrpcErrorIdentifier::InternalServerError => StatusCode::INTERNAL_SERVER_ERROR,
HrpcErrorIdentifier::NotFound => StatusCode::NOT_FOUND,
HrpcErrorIdentifier::NotImplemented => StatusCode::NOT_IMPLEMENTED,
HrpcErrorIdentifier::ResourceExhausted => StatusCode::TOO_MANY_REQUESTS,
HrpcErrorIdentifier::Unavailable => StatusCode::SERVICE_UNAVAILABLE,
}
}
}
#[cfg(feature = "hyper")]
mod hyper {
use futures_util::TryStreamExt;
use crate::{body::Body, BoxError};
impl From<Body> for hyper::Body {
fn from(body: Body) -> Self {
hyper::Body::wrap_stream(body)
}
}
impl From<hyper::Body> for Body {
fn from(hbody: hyper::Body) -> Self {
Body::new(
hbody
.into_stream()
.map_err(|err| -> BoxError { Box::new(err) }),
)
}
}
}