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extern crate reqwest;
use self::reqwest::StatusCode;
use std::error::Error;
use std::fmt;
use std::io;
use std::result::Result;
use std::string;
pub type MMCResult<T> = Result<T, MMCError>;
#[derive(Debug)]
pub enum MMCError {
NotAuthorized,
ResourceNotFound,
APIFailure(StatusCode),
BadRequest(String),
Convert(string::FromUtf8Error),
Network(reqwest::Error),
Io(io::Error),
UnknownEndpoint(String),
UnsupportedMoveParent(String),
}
impl fmt::Display for MMCError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
MMCError::NotAuthorized => write!(
f,
"Not authorized to access this resource. Ensure that valid key/secret pair \
with authorization to the resource have been supplied."
),
MMCError::ResourceNotFound => write!(f, "Specified resource could not be found."),
MMCError::APIFailure(ref status_code) => write!(
f,
"Unknown failure of the API endpoint. API returned a {} status.",
status_code
),
MMCError::BadRequest(ref err_msg) => {
write!(f, "API did not understand request. {}", err_msg)
}
MMCError::Convert(ref err) => err.fmt(f),
MMCError::Network(ref err) => err.fmt(f),
MMCError::Io(ref err) => err.fmt(f),
MMCError::UnknownEndpoint(ref endpoint) => write!(
f,
"Unable to parse the endpoint {} into an Endpoint type",
endpoint
),
MMCError::UnsupportedMoveParent(ref endpoint) => write!(
f,
"Unable to create an object move request to a parent of the {} type",
endpoint
),
}
}
}
impl Error for MMCError {
fn description(&self) -> &str {
match *self {
MMCError::NotAuthorized => "Not authorized response from the API",
MMCError::ResourceNotFound => "Specified resource could not be found",
MMCError::APIFailure(_) => "Unknown failure occured",
MMCError::BadRequest(ref err_msg) => err_msg.as_str(),
MMCError::Convert(ref err) => err.description(),
MMCError::Network(ref err) => err.description(),
MMCError::Io(ref err) => err.description(),
MMCError::UnknownEndpoint(_) => "Can not parse endpoint into type",
MMCError::UnsupportedMoveParent(_) => "Unable to create move request",
}
}
fn cause(&self) -> Option<&Error> {
match *self {
MMCError::Convert(ref err) => Some(err),
MMCError::Network(ref err) => Some(err),
MMCError::Io(ref err) => Some(err),
_ => None,
}
}
}
impl From<string::FromUtf8Error> for MMCError {
fn from(err: string::FromUtf8Error) -> MMCError {
MMCError::Convert(err)
}
}
impl From<reqwest::Error> for MMCError {
fn from(err: reqwest::Error) -> MMCError {
MMCError::Network(err)
}
}
impl From<io::Error> for MMCError {
fn from(err: io::Error) -> MMCError {
MMCError::Io(err)
}
}