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

//! Etcd Client Error handling.

use std::fmt::{Display, Formatter};
use std::str::Utf8Error;

pub type Result<T> = std::result::Result<T, Error>;

/// The error type for `etcd` client.
#[derive(Debug)]
pub enum Error {
    /// Invalid arguments
    InvalidArgs(String),

    /// Invalid URI
    InvalidUri(http::uri::InvalidUri),

    /// IO error
    IoError(std::io::Error),

    /// Transport error
    TransportError(tonic::transport::Error),

    /// gRPC status
    GRpcStatus(tonic::Status),

    /// Watch error
    WatchError(String),

    /// Utf8Error
    Utf8Error(Utf8Error),

    /// Lease error
    LeaseKeepAliveError(String),

    /// Election error
    ElectError(String),

    /// Invalid header value
    InvalidHeaderValue(http::header::InvalidHeaderValue),
}

impl Display for Error {
    #[inline]
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            Error::InvalidArgs(e) => write!(f, "invalid arguments: {}", e),
            Error::InvalidUri(e) => write!(f, "invalid uri: {}", e),
            Error::IoError(e) => write!(f, "io error: {}", e),
            Error::TransportError(e) => write!(f, "transport error: {}", e),
            Error::GRpcStatus(e) => write!(f, "grpc request error: {}", e),
            Error::WatchError(e) => write!(f, "watch error: {}", e),
            Error::Utf8Error(e) => write!(f, "utf8 error: {}", e),
            Error::LeaseKeepAliveError(e) => write!(f, "lease keep alive error: {}", e),
            Error::ElectError(e) => write!(f, "election error: {}", e),
            Error::InvalidHeaderValue(e) => write!(f, "invalid metadata value: {}", e),
        }
    }
}

impl std::error::Error for Error {}

impl From<http::uri::InvalidUri> for Error {
    #[inline]
    fn from(e: http::uri::InvalidUri) -> Self {
        Error::InvalidUri(e)
    }
}

impl From<std::io::Error> for Error {
    #[inline]
    fn from(e: std::io::Error) -> Self {
        Error::IoError(e)
    }
}

impl From<tonic::transport::Error> for Error {
    #[inline]
    fn from(e: tonic::transport::Error) -> Self {
        Error::TransportError(e)
    }
}

impl From<tonic::Status> for Error {
    #[inline]
    fn from(e: tonic::Status) -> Self {
        Error::GRpcStatus(e)
    }
}

impl From<Utf8Error> for Error {
    #[inline]
    fn from(e: Utf8Error) -> Self {
        Error::Utf8Error(e)
    }
}

impl From<http::header::InvalidHeaderValue> for Error {
    #[inline]
    fn from(e: http::header::InvalidHeaderValue) -> Self {
        Error::InvalidHeaderValue(e)
    }
}