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use std::error::Error;
use std::fmt;
use std::io::{self, Read};
use serde_json;
#[derive(Debug)]
pub enum EsError {
EsError(String),
EsServerError(String),
HttpError(reqwest::Error),
IoError(io::Error),
JsonError(serde_json::error::Error),
}
impl From<io::Error> for EsError {
fn from(err: io::Error) -> EsError {
EsError::IoError(err)
}
}
impl From<reqwest::Error> for EsError {
fn from(err: reqwest::Error) -> EsError {
EsError::HttpError(err)
}
}
impl From<serde_json::error::Error> for EsError {
fn from(err: serde_json::error::Error) -> EsError {
EsError::JsonError(err)
}
}
impl<'a> From<&'a mut reqwest::Response> for EsError {
fn from(err: &'a mut reqwest::Response) -> EsError {
let mut body = String::new();
match err.read_to_string(&mut body) {
Ok(_) => (),
Err(_) => {
return EsError::EsServerError(format!(
"{} - cannot read response - {:?}",
err.status(),
err
));
}
}
EsError::EsServerError(format!("{} - {}", err.status(), body))
}
}
impl Error for EsError {
fn description(&self) -> &str {
match *self {
EsError::EsError(ref err) => err,
EsError::EsServerError(ref err) => err,
EsError::HttpError(ref err) => err.description(),
EsError::IoError(ref err) => err.description(),
EsError::JsonError(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&dyn Error> {
match *self {
EsError::EsError(_) => None,
EsError::EsServerError(_) => None,
EsError::HttpError(ref err) => Some(err as &dyn Error),
EsError::IoError(ref err) => Some(err as &dyn Error),
EsError::JsonError(ref err) => Some(err as &dyn Error),
}
}
}
impl fmt::Display for EsError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
EsError::EsError(ref s) => fmt::Display::fmt(s, f),
EsError::EsServerError(ref s) => fmt::Display::fmt(s, f),
EsError::HttpError(ref err) => fmt::Display::fmt(err, f),
EsError::IoError(ref err) => fmt::Display::fmt(err, f),
EsError::JsonError(ref err) => fmt::Display::fmt(err, f),
}
}
}