ic_web3_rs/
error.rs

1//! Web3 Error
2use crate::rpc::error::Error as RPCError;
3use derive_more::{Display, From};
4use serde_json::Error as SerdeError;
5use std::io::Error as IoError;
6
7/// Web3 `Result` type.
8pub type Result<T = ()> = std::result::Result<T, Error>;
9
10/// Transport-depended error.
11#[derive(Display, Debug, Clone, PartialEq)]
12pub enum TransportError {
13    /// Transport-specific error code.
14    #[display(fmt = "code {}", _0)]
15    Code(u16),
16    /// Arbitrary, developer-readable description of the occurred error.
17    #[display(fmt = "{}", _0)]
18    Message(String),
19}
20
21/// Errors which can occur when attempting to generate resource uri.
22#[derive(Debug, Display, From)]
23pub enum Error {
24    /// server is unreachable
25    #[display(fmt = "Server is unreachable")]
26    Unreachable,
27    /// decoder error
28    #[display(fmt = "Decoder error: {}", _0)]
29    Decoder(String),
30    /// invalid response
31    #[display(fmt = "Got invalid response: {}", _0)]
32    #[from(ignore)]
33    InvalidResponse(String),
34    /// transport error
35    #[display(fmt = "Transport error: {}" _0)]
36    #[from(ignore)]
37    Transport(TransportError),
38    /// rpc error
39    #[display(fmt = "RPC error: {:?}", _0)]
40    Rpc(RPCError),
41    /// io error
42    #[display(fmt = "IO error: {}", _0)]
43    Io(IoError),
44    /// recovery error
45    #[display(fmt = "Recovery error: {}", _0)]
46    Recovery(crate::signing::RecoveryError),
47    /// web3 internal error
48    #[display(fmt = "Internal Web3 error")]
49    Internal,
50}
51
52impl std::error::Error for Error {
53    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
54        use self::Error::*;
55        match *self {
56            Unreachable | Decoder(_) | InvalidResponse(_) | Transport { .. } | Internal => None,
57            Rpc(ref e) => Some(e),
58            Io(ref e) => Some(e),
59            Recovery(ref e) => Some(e),
60        }
61    }
62}
63
64impl From<SerdeError> for Error {
65    fn from(err: SerdeError) -> Self {
66        Error::Decoder(format!("{:?}", err))
67    }
68}
69
70impl Clone for Error {
71    fn clone(&self) -> Self {
72        use self::Error::*;
73        match self {
74            Unreachable => Unreachable,
75            Decoder(s) => Decoder(s.clone()),
76            InvalidResponse(s) => InvalidResponse(s.clone()),
77            Transport(s) => Transport(s.clone()),
78            Rpc(e) => Rpc(e.clone()),
79            Io(e) => Io(IoError::from(e.kind())),
80            Recovery(e) => Recovery(e.clone()),
81            Internal => Internal,
82        }
83    }
84}
85
86#[cfg(test)]
87impl PartialEq for Error {
88    fn eq(&self, other: &Self) -> bool {
89        use self::Error::*;
90        match (self, other) {
91            (Unreachable, Unreachable) | (Internal, Internal) => true,
92            (Decoder(a), Decoder(b)) | (InvalidResponse(a), InvalidResponse(b)) => a == b,
93            (Transport(a), Transport(b)) => a == b,
94            (Rpc(a), Rpc(b)) => a == b,
95            (Io(a), Io(b)) => a.kind() == b.kind(),
96            (Recovery(a), Recovery(b)) => a == b,
97            _ => false,
98        }
99    }
100}
ic_web3_rs/error.rs

ic_web3_rs/
error.rs
