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use crate::ID;
use failure::{Backtrace, Context, Fail};
use reqwest::StatusCode;
use std::fmt;
#[derive(Eq, PartialEq, Debug, Fail)]
pub enum ErrorKind {
#[fail(display = "failed to prepare HTTP request, '{}'", _0)]
FailedToPrepareHttpRequest(String),
#[fail(display = "HTTP request failed")]
HttpRequestFailed,
#[fail(
display = "failed to read HTTP response, status_code = {}, reason = {}",
_0, _1
)]
FailedToProcessHttpResponse(StatusCode, String),
#[fail(
display = "API call failed because of invalid token, status code = {}",
_0
)]
ApiCallFailedInvalidToken(StatusCode),
#[fail(
display = "API call failed because of too many reqwests, status code = {}",
_0
)]
ApiCallFailedTooManyRequests(StatusCode),
#[fail(display = "API call failed with status code = {}, '{}'", _0, _1)]
ApiCallFailed(StatusCode, String),
#[fail(display = "failed documents; ids='{:?}'", _0)]
FailedDocuments(Vec<ID>),
}
impl Clone for ErrorKind {
fn clone(&self) -> Self {
use self::ErrorKind::*;
match *self {
HttpRequestFailed => HttpRequestFailed,
ApiCallFailed(ref status_code, ref body) => ApiCallFailed(*status_code, body.clone()),
ApiCallFailedInvalidToken(ref status_code) => ApiCallFailedInvalidToken(*status_code),
ApiCallFailedTooManyRequests(ref status_code) => {
ApiCallFailedTooManyRequests(*status_code)
}
FailedToProcessHttpResponse(ref status_code, ref body) => {
FailedToProcessHttpResponse(*status_code, body.clone())
}
FailedToPrepareHttpRequest(ref s) => FailedToPrepareHttpRequest(s.clone()),
FailedDocuments(ref s) => FailedDocuments(s.clone()),
}
}
}
#[derive(Debug)]
pub struct Error {
pub(crate) inner: Context<ErrorKind>,
}
impl Error {
pub fn kind(&self) -> &ErrorKind {
self.inner.get_context()
}
}
impl Clone for Error {
fn clone(&self) -> Self {
Error {
inner: Context::new(self.inner.get_context().clone()),
}
}
}
impl Fail for Error {
fn cause(&self) -> Option<&dyn Fail> {
self.inner.cause()
}
fn backtrace(&self) -> Option<&Backtrace> {
self.inner.backtrace()
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(&self.inner, f)
}
}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Error {
Error {
inner: Context::new(kind),
}
}
}
impl From<Context<ErrorKind>> for Error {
fn from(inner: Context<ErrorKind>) -> Error {
Error { inner }
}
}
pub type Result<T> = ::std::result::Result<T, Error>;