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use failure::{Context, Fail, Backtrace};
use std::fmt::{self, Display};
#[derive(Clone, Debug, Fail)]
pub enum ServiceErrorKind {
#[fail(display = "An Error spawning a new service")]
ServiceCreation,
#[fail(display = "An Error during handling a request")]
RequestError,
#[fail(display = "Unhandled request for path: {}", _0)]
UnhandledError(String),
#[fail(display = "Internal Error")]
InternalError,
}
#[derive(Debug)]
pub struct ServiceError {
inner: Context<ServiceErrorKind>,
}
impl Fail for ServiceError {
fn cause(&self) -> Option<&Fail> {
self.inner.cause()
}
fn backtrace(&self) -> Option<&Backtrace> {
self.inner.backtrace()
}
}
impl ServiceError {
pub fn kind(&self) -> ServiceErrorKind {
self.inner.get_context().clone()
}
}
impl From<ServiceErrorKind> for ServiceError {
fn from(kind: ServiceErrorKind) -> ServiceError {
ServiceError { inner: Context::new(kind) }
}
}
impl From<Context<ServiceErrorKind>> for ServiceError {
fn from(inner: Context<ServiceErrorKind>) -> ServiceError {
ServiceError { inner: inner }
}
}
impl Display for ServiceError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Display::fmt(&self.inner, f)
}
}