use std::fmt;
use std::result;
use failure::{Backtrace, Context, Fail};
pub type Result<T> = result::Result<T, Error>;
#[derive(Debug)]
pub struct Error {
inner: Context<ErrorKind>,
}
impl Error {
pub fn kind(&self) -> ErrorKind {
*self.inner.get_context()
}
}
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 {
write!(f, "{}", self.kind())
}
}
#[derive(Debug, Copy, Clone, PartialEq, Fail)]
pub enum ErrorKind {
ConfigError,
PoisonError,
IoError,
ClapError,
LoggerError,
AnyhowError,
}
impl fmt::Display for ErrorKind {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Undefined Error")
}
}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Error {
Error {
inner: Context::new(kind),
}
}
}
impl From<Context<ErrorKind>> for Error {
fn from(inner: failure::Context<ErrorKind>) -> Error {
Error { inner }
}
}
impl From<config::ConfigError> for Error {
fn from(err: config::ConfigError) -> Self {
Error {
inner: err.context(ErrorKind::ConfigError),
}
}
}
impl<T> From<std::sync::PoisonError<T>> for Error {
fn from(_err: std::sync::PoisonError<T>) -> Self {
Error {
inner: Context::from(ErrorKind::PoisonError),
}
}
}
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Self {
Error {
inner: err.context(ErrorKind::IoError),
}
}
}
impl From<clap::Error> for Error {
fn from(err: clap::Error) -> Self {
Error {
inner: err.context(ErrorKind::ClapError),
}
}
}
impl From<log::SetLoggerError> for Error {
fn from(err: log::SetLoggerError) -> Self {
Error {
inner: err.context(ErrorKind::LoggerError),
}
}
}
impl From<anyhow::Error> for Error {
fn from(err: anyhow::Error) -> Self {
eprintln!("{err:?}");
Error {
inner: Context::from(ErrorKind::AnyhowError),
}
}
}