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use std::borrow::Cow; use std::convert::TryFrom; use hyper::http::{ self, header::{HeaderMap, HeaderName, HeaderValue}, StatusCode, }; pub type HyperResponse = http::Response<hyper::Body>; pub struct Response { pub(crate) inner: HyperResponse, } impl Response { pub fn new() -> Self { HyperResponse::default().into() } pub fn with_status(status: StatusCode) -> Self { Self::new().set_status(status) } pub fn with_html<T>(body: T) -> Self where hyper::Body: From<T>, T: Send, { html(body).into() } pub fn with_json<T>(val: &T) -> Self where T: serde::Serialize, { json(val).into() } pub fn with_bytes(val: &'static [u8]) -> Self { val.into() } pub fn with_bytes_vec(val: Vec<u8>) -> Self { val.into() } pub fn with_str(s: &'static str) -> Self { s.into() } pub fn with_string(s: impl ToString) -> Self { s.to_string().into() } pub fn inner(&self) -> &HyperResponse { &self.inner } pub fn inner_mut(&mut self) -> &mut HyperResponse { &mut self.inner } pub fn status(&self) -> StatusCode { self.inner.status() } pub fn headers(&self) -> &HeaderMap<HeaderValue> { self.inner.headers() } pub fn headers_mut(&mut self) -> &mut HeaderMap<HeaderValue> { self.inner.headers_mut() } pub fn into_hyper_response(self) -> HyperResponse { let Self { inner } = self; inner } pub fn set_status(mut self, status: StatusCode) -> Self { *self.inner.status_mut() = status; self } pub fn insert_header<K, V>(mut self, name: K, value: V) -> Self where HeaderName: TryFrom<K>, <HeaderName as TryFrom<K>>::Error: Into<http::Error>, HeaderValue: TryFrom<V>, <HeaderValue as TryFrom<V>>::Error: Into<http::Error>, { match crate::utils::utils::parse_header(name, value) { Ok((name, value)) => { self.inner.headers_mut().insert(name, value); } Err(e) => { tracing::error!("with_header error: {}", e); } } self } pub async fn body_bytes(&mut self) -> Result<Vec<u8>, crate::Error> { use bytes::Buf; use bytes::BytesMut; use hyper::body::HttpBody; let mut bufs = BytesMut::new(); while let Some(buf) = self.inner.body_mut().data().await { let buf = buf?; if buf.has_remaining() { bufs.extend(buf); } } Ok(bufs.freeze().to_vec()) } } impl Default for Response { fn default() -> Self { Self::new() } } impl From<HyperResponse> for Response { fn from(response: HyperResponse) -> Self { Response { inner: response } } } impl Into<HyperResponse> for Response { fn into(self) -> HyperResponse { let Response { inner } = self; inner } } impl From<StatusCode> for Response { fn from(val: StatusCode) -> Self { Self::with_status(val) } } impl From<&'static [u8]> for Response { fn from(val: &'static [u8]) -> Self { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::APPLICATION_OCTET_STREAM.to_string(), ) .body(hyper::Body::from(val)) .unwrap() .into() } } impl From<Vec<u8>> for Response { fn from(val: Vec<u8>) -> Self { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::APPLICATION_OCTET_STREAM.to_string(), ) .body(hyper::Body::from(val)) .unwrap() .into() } } impl From<&'static str> for Response { fn from(val: &'static str) -> Self { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::TEXT_PLAIN_UTF_8.to_string(), ) .body(hyper::Body::from(val)) .unwrap() .into() } } impl From<String> for Response { fn from(val: String) -> Self { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::TEXT_PLAIN_UTF_8.to_string(), ) .body(hyper::Body::from(val)) .unwrap() .into() } } impl From<Cow<'static, str>> for Response { fn from(val: Cow<'static, str>) -> Self { match val { Cow::Borrowed(s) => s.into(), Cow::Owned(s) => s.into(), } } } impl<E, R> From<Result<R, E>> for Response where R: Into<Response>, E: std::error::Error + 'static + Send + Sync, { fn from(val: Result<R, E>) -> Self { match val { Ok(r) => r.into(), Err(e) => { tracing::error!("on Result<R, E>, error: {:?}", e); http::Response::builder() .status(StatusCode::INTERNAL_SERVER_ERROR) .body(hyper::Body::from("Internal Server Error")) .unwrap() .into() } } } } pub struct Html<T> { body: T, } pub fn html<T>(body: T) -> Html<T> where hyper::Body: From<T>, T: Send, { Html { body } } impl<T> From<Html<T>> for Response where hyper::Body: From<T>, T: Send, { fn from(val: Html<T>) -> Response { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::TEXT_HTML_UTF_8.to_string(), ) .body(hyper::Body::from(val.body)) .unwrap() .into() } } pub struct Json { inner: Result<Vec<u8>, serde_json::Error>, } pub fn json<T>(val: &T) -> Json where T: serde::Serialize, { Json { inner: serde_json::to_vec(val), } } impl From<Json> for Response { fn from(val: Json) -> Response { let resp: Result<Response, _> = val .inner .map(|j| { http::Response::builder() .header( hyper::header::CONTENT_TYPE, mime::APPLICATION_JSON.to_string(), ) .body(hyper::Body::from(j)) .unwrap() .into() }) .map_err(|e| { tracing::error!("json serialize failed, {:?}", e); e }); resp.into() } }