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use std::fmt;
use crate::http::body::{Body, MessageBody, ResponseBody};
use crate::http::{HeaderMap, Response, ResponseHead, StatusCode};
use super::error::{ErrorContainer, ErrorRenderer};
use super::httprequest::HttpRequest;
pub struct WebResponse {
request: HttpRequest,
response: Response<Body>,
}
impl WebResponse {
pub fn new(response: Response<Body>, request: HttpRequest) -> Self {
WebResponse { request, response }
}
pub fn from_err<Err: ErrorRenderer, E: Into<Err::Container>>(
err: E,
request: HttpRequest,
) -> Self {
let err = err.into();
let res: Response = err.error_response(&request);
if res.head().status == StatusCode::INTERNAL_SERVER_ERROR {
log::error!("Internal Server Error: {:?}", err);
} else {
log::debug!("Error in response: {:?}", err);
}
WebResponse {
request,
response: res.into_body(),
}
}
#[inline]
pub fn error_response<Err: ErrorRenderer, E: Into<Err::Container>>(
self,
err: E,
) -> Self {
Self::from_err::<Err, E>(err, self.request)
}
#[inline]
pub fn into_response(self, response: Response) -> WebResponse {
WebResponse::new(response, self.request)
}
#[inline]
pub fn request(&self) -> &HttpRequest {
&self.request
}
#[inline]
pub fn response(&self) -> &Response<Body> {
&self.response
}
#[inline]
pub fn response_mut(&mut self) -> &mut Response<Body> {
&mut self.response
}
#[inline]
pub fn status(&self) -> StatusCode {
self.response.status()
}
#[inline]
pub fn headers(&self) -> &HeaderMap {
self.response.headers()
}
#[inline]
pub fn headers_mut(&mut self) -> &mut HeaderMap {
self.response.headers_mut()
}
pub fn checked_expr<Err, F, E>(mut self, f: F) -> Self
where
F: FnOnce(&mut Self) -> Result<(), E>,
E: Into<Err::Container>,
Err: ErrorRenderer,
{
if let Err(err) = f(&mut self) {
let res: Response = err.into().into();
WebResponse::new(res, self.request)
} else {
self
}
}
pub fn take_body(&mut self) -> ResponseBody<Body> {
self.response.take_body()
}
}
impl WebResponse {
pub fn map_body<F>(self, f: F) -> WebResponse
where
F: FnOnce(&mut ResponseHead, ResponseBody<Body>) -> ResponseBody<Body>,
{
let response = self.response.map_body(f);
WebResponse {
response,
request: self.request,
}
}
}
impl From<WebResponse> for Response<Body> {
fn from(res: WebResponse) -> Response<Body> {
res.response
}
}
impl fmt::Debug for WebResponse {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let res = writeln!(
f,
"\nWebResponse {:?} {}{}",
self.response.head().version,
self.response.head().status,
self.response.head().reason.unwrap_or(""),
);
let _ = writeln!(f, " headers:");
for (key, val) in self.response.head().headers.iter() {
let _ = writeln!(f, " {:?}: {:?}", key, val);
}
let _ = writeln!(f, " body: {:?}", self.response.body().size());
res
}
}
#[cfg(test)]
mod tests {
use crate::http::{self, StatusCode};
use crate::web::test::TestRequest;
use crate::web::{DefaultError, HttpResponse};
#[test]
fn test_response() {
let res = TestRequest::default().to_srv_response(HttpResponse::Ok().finish());
let res = res.into_response(HttpResponse::BadRequest().finish());
assert_eq!(res.response().status(), StatusCode::BAD_REQUEST);
let err = http::error::PayloadError::Overflow;
let res = res.error_response::<DefaultError, _>(err);
assert_eq!(res.response().status(), StatusCode::PAYLOAD_TOO_LARGE);
let res = TestRequest::default().to_srv_response(HttpResponse::Ok().finish());
let mut res = res.checked_expr::<DefaultError, _, _>(|_| {
Ok::<_, http::error::PayloadError>(())
});
assert_eq!(res.response_mut().status(), StatusCode::OK);
let res = res.checked_expr::<DefaultError, _, _>(|_| {
Err(http::error::PayloadError::Overflow)
});
assert_eq!(res.response().status(), StatusCode::PAYLOAD_TOO_LARGE);
}
}