ntex 4.0.0-beta.10

Framework for composable network services
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163

use std::fmt;

use crate::http::body::{Body, MessageBody, ResponseBody};
use crate::http::{HeaderMap, Response, ResponseHead, StatusCode};

use super::{AppState, HttpRequest, WebResponseError};

/// An http service response.
pub struct WebResponse {
    request: HttpRequest,
    response: Response<Body>,
}

impl WebResponse {
    /// Create web response instance.
    pub fn new(response: Response<Body>, request: HttpRequest) -> Self {
        WebResponse { request, response }
    }

    #[must_use]
    /// Create web response from the error.
    pub fn from_err<St>(
        st: &St,
        mut err: impl WebResponseError<St, St::Error>,
        request: HttpRequest,
    ) -> Self
    where
        St: AppState,
    {
        let res = err.error_response(st);

        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]
    #[must_use]
    /// Create web response for error.
    pub fn error_response<St>(self, st: &St, err: impl WebResponseError<St, St::Error>) -> Self
    where
        St: AppState,
    {
        Self::from_err(st, err, self.request)
    }

    #[inline]
    #[must_use]
    /// Create web response.
    pub fn into_response(self, response: Response) -> WebResponse {
        WebResponse::new(response, self.request)
    }

    #[inline]
    #[must_use]
    /// Get reference to original request.
    pub fn request(&self) -> &HttpRequest {
        &self.request
    }

    #[inline]
    /// Get reference to response.
    pub fn response(&self) -> &Response<Body> {
        &self.response
    }

    #[inline]
    /// Get mutable reference to response.
    pub fn response_mut(&mut self) -> &mut Response<Body> {
        &mut self.response
    }

    #[inline]
    /// Get the response status code.
    pub fn status(&self) -> StatusCode {
        self.response.status()
    }

    #[inline]
    /// Returns response's headers.
    pub fn headers(&self) -> &HeaderMap {
        self.response.headers()
    }

    #[inline]
    /// Returns mutable response's headers.
    pub fn headers_mut(&mut self) -> &mut HeaderMap {
        self.response.headers_mut()
    }

    #[must_use]
    /// Extract response body.
    pub fn take_body(&mut self) -> ResponseBody<Body> {
        self.response.take_body()
    }

    #[must_use]
    /// Set a new body.
    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,
        }
    }

    /// Destruct response into parts.
    pub fn into_parts(self) -> (Response<Body>, HttpRequest) {
        (self.response, 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 {
            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::{HttpResponse, test::TestRequest};

    #[test]
    fn test_response() {
        let res = TestRequest::default().to_srv_response(HttpResponse::Ok().build());
        let res = res.into_response(HttpResponse::BadRequest().build());
        assert_eq!(res.response().status(), StatusCode::BAD_REQUEST);

        let err = http::error::PayloadError::Overflow;
        let res = res.error_response::<()>(&(), err);
        assert_eq!(res.response().status(), StatusCode::PAYLOAD_TOO_LARGE);
    }
}