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//! Representations of various client errors
use hyper::{self, StatusCode};
use serde_json::Error as SerdeError;
use std::{error::Error as StdError, fmt, io::Error as IoError, string::FromUtf8Error};
#[derive(Debug)]
pub enum Error {
SerdeJsonError(SerdeError),
Hyper(hyper::Error),
Http(hyper::http::Error),
IO(IoError),
Encoding(FromUtf8Error),
InvalidResponse(String),
Fault { code: StatusCode, message: String },
ConnectionNotUpgraded,
}
impl From<SerdeError> for Error {
fn from(error: SerdeError) -> Error {
Error::SerdeJsonError(error)
}
}
impl From<hyper::Error> for Error {
fn from(error: hyper::Error) -> Error {
Error::Hyper(error)
}
}
impl From<hyper::http::Error> for Error {
fn from(error: hyper::http::Error) -> Error {
Error::Http(error)
}
}
impl From<IoError> for Error {
fn from(error: IoError) -> Error {
Error::IO(error)
}
}
impl fmt::Display for Error {
fn fmt(
&self,
f: &mut fmt::Formatter,
) -> fmt::Result {
write!(f, "Docker Error: ")?;
match self {
Error::SerdeJsonError(ref err) => err.fmt(f),
Error::Http(ref err) => err.fmt(f),
Error::Hyper(ref err) => err.fmt(f),
Error::IO(ref err) => err.fmt(f),
Error::Encoding(ref err) => err.fmt(f),
Error::InvalidResponse(ref cause) => {
write!(f, "Response doesn't have the expected format: {}", cause)
}
Error::Fault { code, .. } => write!(f, "{}", code),
Error::ConnectionNotUpgraded => write!(
f,
"expected the docker host to upgrade the HTTP connection but it did not"
),
}
}
}
impl StdError for Error {
fn description(&self) -> &str {
match self {
Error::SerdeJsonError(e) => e.description(),
Error::Hyper(e) => e.description(),
Error::Http(e) => e.description(),
Error::IO(e) => e.description(),
Error::Encoding(e) => e.description(),
Error::InvalidResponse(msg) => msg.as_str(),
Error::Fault { message, .. } => message.as_str(),
Error::ConnectionNotUpgraded => "connection not upgraded",
}
}
fn cause(&self) -> Option<&dyn StdError> {
match self {
Error::SerdeJsonError(ref err) => Some(err),
Error::Http(ref err) => Some(err),
Error::IO(ref err) => Some(err),
Error::Encoding(e) => Some(e),
_ => None,
}
}
}
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