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pub mod body {
use bytes::buf::Buf;
use prost::Message;
use warp::{
filters::body::aggregate,
reject::{self, Reject, Rejection},
Filter,
};
#[derive(Debug)]
struct ProtobufDeseralizeError {
cause: Box<dyn std::error::Error + Send + Sync>,
}
impl Reject for ProtobufDeseralizeError {}
pub fn protobuf<T: Message + Send + Default>(
) -> impl Filter<Extract = (T,), Error = Rejection> + Copy {
async fn from_reader<T: Message + Send + Default>(buf: impl Buf) -> Result<T, Rejection> {
T::decode(buf).map_err(|err| {
log::debug!("request protobuf body error: {}", err);
reject::custom(ProtobufDeseralizeError { cause: err.into() })
})
}
aggregate().and_then(from_reader)
}
}
pub mod reply {
use bytes::BytesMut;
use prost::Message;
use warp::{
http::{
header::{HeaderValue, CONTENT_TYPE},
StatusCode,
},
reply::{Reply, Response},
};
pub fn protobuf<T>(val: &T) -> Protobuf
where
T: Message,
{
let mut buf = BytesMut::with_capacity(1024 * 8);
Protobuf {
inner: val.encode(&mut buf).map(|_| buf.to_vec()).map_err(|err| {
log::error!("reply::protobuf error: {}", err);
}),
}
}
#[allow(missing_debug_implementations)]
pub struct Protobuf {
inner: Result<Vec<u8>, ()>,
}
impl Reply for Protobuf {
#[inline]
fn into_response(self) -> Response {
match self.inner {
Ok(body) => {
let mut res = Response::new(body.into());
res.headers_mut().insert(
CONTENT_TYPE,
HeaderValue::from_static("application/x-protobuf"),
);
res
}
Err(()) => StatusCode::INTERNAL_SERVER_ERROR.into_response(),
}
}
}
#[derive(Debug)]
pub(crate) struct ReplyProtobufError;
impl std::fmt::Display for ReplyProtobufError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
f.write_str("warp::reply::protobuf() failed")
}
}
impl std::error::Error for ReplyProtobufError {}
}