innernet_server/
error.rs

1use std::convert::TryFrom;
2
3use hyper::{http, Body, Response, StatusCode};
4use thiserror::Error;
5
6#[derive(Error, Debug)]
7pub enum ServerError {
8    #[error("unauthorized access")]
9    Unauthorized,
10
11    #[error("object not found")]
12    NotFound,
13
14    #[error("invalid query")]
15    InvalidQuery,
16
17    #[error("endpoint gone")]
18    Gone,
19
20    #[error("internal database error")]
21    Database(#[from] rusqlite::Error),
22
23    #[error("internal WireGuard error")]
24    WireGuard,
25
26    #[error("internal I/O error")]
27    Io(#[from] std::io::Error),
28
29    #[error("JSON parsing/serialization error")]
30    Json(#[from] serde_json::Error),
31
32    #[error("Generic HTTP error")]
33    Http(#[from] http::Error),
34
35    #[error("Generic Hyper error")]
36    Hyper(#[from] hyper::Error),
37}
38
39impl From<&ServerError> for StatusCode {
40    fn from(error: &ServerError) -> StatusCode {
41        use ServerError::*;
42        match error {
43            Unauthorized => StatusCode::UNAUTHORIZED,
44            NotFound => StatusCode::NOT_FOUND,
45            Gone => StatusCode::GONE,
46            InvalidQuery | Json(_) => StatusCode::BAD_REQUEST,
47            // Special-case the constraint violation situation.
48            Database(rusqlite::Error::SqliteFailure(libsqlite3_sys::Error { code, .. }, ..))
49                if *code == libsqlite3_sys::ErrorCode::ConstraintViolation =>
50            {
51                StatusCode::BAD_REQUEST
52            },
53            Database(rusqlite::Error::QueryReturnedNoRows) => StatusCode::NOT_FOUND,
54            WireGuard | Io(_) | Database(_) | Http(_) | Hyper(_) => {
55                StatusCode::INTERNAL_SERVER_ERROR
56            },
57        }
58    }
59}
60
61impl TryFrom<ServerError> for Response<Body> {
62    type Error = http::Error;
63
64    fn try_from(e: ServerError) -> Result<Self, Self::Error> {
65        Response::builder()
66            .status(StatusCode::from(&e))
67            .body(Body::empty())
68    }
69}
innernet_server/error.rs

innernet_server/
error.rs
