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use std::error::Error;
use std::fmt;
use std::io;
use crate::credential::CredentialsError;
use super::proto::xml::util::XmlParseError;
use super::request::{BufferedHttpResponse, HttpDispatchError};
#[derive(Debug, PartialEq)]
pub enum RusotoError<E> {
Service(E),
HttpDispatch(HttpDispatchError),
Credentials(CredentialsError),
Validation(String),
ParseError(String),
Unknown(BufferedHttpResponse),
}
pub type RusotoResult<T, E> = Result<T, RusotoError<E>>;
impl<E> From<XmlParseError> for RusotoError<E> {
fn from(err: XmlParseError) -> Self {
let XmlParseError(message) = err;
RusotoError::ParseError(message.to_string())
}
}
impl<E> From<serde_json::error::Error> for RusotoError<E> {
fn from(err: serde_json::error::Error) -> Self {
RusotoError::ParseError(err.to_string())
}
}
impl<E> From<CredentialsError> for RusotoError<E> {
fn from(err: CredentialsError) -> Self {
RusotoError::Credentials(err)
}
}
impl<E> From<HttpDispatchError> for RusotoError<E> {
fn from(err: HttpDispatchError) -> Self {
RusotoError::HttpDispatch(err)
}
}
impl<E> From<io::Error> for RusotoError<E> {
fn from(err: io::Error) -> Self {
RusotoError::HttpDispatch(HttpDispatchError::from(err))
}
}
impl<E: Error + 'static> fmt::Display for RusotoError<E> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.description())
}
}
impl<E: Error + 'static> Error for RusotoError<E> {
fn description(&self) -> &str {
match *self {
RusotoError::Service(ref err) => err.description(),
RusotoError::Validation(ref cause) => cause,
RusotoError::Credentials(ref err) => err.description(),
RusotoError::HttpDispatch(ref dispatch_error) => dispatch_error.description(),
RusotoError::ParseError(ref cause) => cause,
RusotoError::Unknown(ref cause) => cause.body_as_str(),
}
}
fn source(&self) -> Option<&(dyn Error + 'static)> {
match *self {
RusotoError::Service(ref err) => Some(err),
RusotoError::Credentials(ref err) => Some(err),
RusotoError::HttpDispatch(ref err) => Some(err),
_ => None,
}
}
}