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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
use std::error::Error as StdError;
use std::fmt;
use reqwest::header::InvalidHeaderValue;
use reqwest::{Error as ReqwestError, Response, StatusCode, Url};
use url::ParseError as UrlError;
use crate::http::utils::deserialize_errors;
#[derive(Clone, Deserialize, Serialize, PartialEq, Debug)]
#[non_exhaustive]
pub struct DiscordJsonError {
pub code: isize,
pub message: String,
#[serde(default, deserialize_with = "deserialize_errors")]
pub errors: Vec<DiscordJsonSingleError>,
}
#[derive(Debug, Clone, Deserialize, Serialize, PartialEq)]
pub struct DiscordJsonSingleError {
pub code: String,
pub message: String,
pub path: String,
}
#[derive(Debug, Clone, PartialEq)]
pub struct ErrorResponse {
pub status_code: StatusCode,
pub url: Url,
pub error: DiscordJsonError,
}
impl ErrorResponse {
pub async fn from_response(r: Response) -> Self {
ErrorResponse {
status_code: r.status(),
url: r.url().clone(),
error: r.json().await.unwrap_or_else(|_| DiscordJsonError {
code: -1,
message:
"[Serenity] Could not decode json when receiving error response from discord!"
.to_string(),
errors: vec![],
}),
}
}
}
#[derive(Debug)]
#[non_exhaustive]
pub enum Error {
UnsuccessfulRequest(ErrorResponse),
RateLimitI64F64,
RateLimitUtf8,
Url(UrlError),
InvalidWebhook,
InvalidHeader(InvalidHeaderValue),
Request(ReqwestError),
InvalidScheme,
InvalidPort,
ApplicationIdMissing,
}
impl Error {
pub async fn from_response(r: Response) -> Self {
ErrorResponse::from_response(r).await.into()
}
#[must_use]
pub fn is_unsuccessful_request(&self) -> bool {
matches!(self, Self::UnsuccessfulRequest(_))
}
#[must_use]
pub fn is_url_error(&self) -> bool {
matches!(self, Self::Url(_))
}
#[must_use]
pub fn is_invalid_header(&self) -> bool {
matches!(self, Self::InvalidHeader(_))
}
#[must_use]
pub fn status_code(&self) -> Option<StatusCode> {
match self {
Self::UnsuccessfulRequest(res) => Some(res.status_code),
_ => None,
}
}
}
impl From<ErrorResponse> for Error {
fn from(error: ErrorResponse) -> Error {
Error::UnsuccessfulRequest(error)
}
}
impl From<ReqwestError> for Error {
fn from(error: ReqwestError) -> Error {
Error::Request(error)
}
}
impl From<UrlError> for Error {
fn from(error: UrlError) -> Error {
Error::Url(error)
}
}
impl From<InvalidHeaderValue> for Error {
fn from(error: InvalidHeaderValue) -> Error {
Error::InvalidHeader(error)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::UnsuccessfulRequest(e) => {
f.write_str(&e.error.message)?;
let mut errors_iter = e.error.errors.iter();
if let Some(error) = errors_iter.next() {
f.write_str(" (")?;
f.write_str(&error.path)?;
f.write_str(": ")?;
f.write_str(&error.message)?;
for error in errors_iter {
f.write_str(", ")?;
f.write_str(&error.path)?;
f.write_str(": ")?;
f.write_str(&error.message)?;
}
f.write_str(")")?;
}
Ok(())
},
Self::RateLimitI64F64 => f.write_str("Error decoding a header into an i64 or f64"),
Self::RateLimitUtf8 => f.write_str("Error decoding a header from UTF-8"),
Self::Url(_) => f.write_str("Provided URL is incorrect."),
Self::InvalidWebhook => f.write_str("Provided URL is not a valid webhook."),
Self::InvalidHeader(_) => f.write_str("Provided value is an invalid header value."),
Self::Request(_) => f.write_str("Error while sending HTTP request."),
Self::InvalidScheme => f.write_str("Invalid Url scheme."),
Self::InvalidPort => f.write_str("Invalid port."),
Self::ApplicationIdMissing => f.write_str("Application id was expected but missing."),
}
}
}
impl StdError for Error {
fn source(&self) -> Option<&(dyn StdError + 'static)> {
match self {
Self::Url(inner) => Some(inner),
Self::Request(inner) => Some(inner),
_ => None,
}
}
}
#[cfg(test)]
mod test {
use http_crate::response::Builder;
use reqwest::ResponseBuilderExt;
use super::*;
use crate::json::to_string;
#[tokio::test]
async fn test_error_response_into() {
let error = DiscordJsonError {
code: 43121215,
message: String::from("This is a Ferris error"),
errors: vec![],
};
let mut builder = Builder::new();
builder = builder.status(403);
builder = builder.url(String::from("https://ferris.crab").parse().unwrap());
let body_string = to_string(&error).unwrap();
let response = builder.body(body_string.into_bytes()).unwrap();
let reqwest_response: reqwest::Response = response.into();
let error_response = ErrorResponse::from_response(reqwest_response).await;
let known = ErrorResponse {
status_code: reqwest::StatusCode::from_u16(403).unwrap(),
url: String::from("https://ferris.crab").parse().unwrap(),
error,
};
assert_eq!(error_response, known);
}
}