forked from Deuxfleurs/garage
122 lines
3 KiB
Rust
122 lines
3 KiB
Rust
use err_derive::Error;
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use hyper::StatusCode;
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use garage_util::error::Error as GarageError;
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#[derive(Debug, Error)]
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pub enum Error {
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// Category: internal error
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#[error(display = "Internal error: {}", _0)]
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InternalError(#[error(source)] GarageError),
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#[error(display = "Internal error (Hyper error): {}", _0)]
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Hyper(#[error(source)] hyper::Error),
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#[error(display = "Internal error (HTTP error): {}", _0)]
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HTTP(#[error(source)] http::Error),
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// Category: cannot process
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#[error(display = "Forbidden: {}", _0)]
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Forbidden(String),
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#[error(display = "Not found")]
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NotFound,
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// Category: bad request
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#[error(display = "Invalid UTF-8: {}", _0)]
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InvalidUTF8Str(#[error(source)] std::str::Utf8Error),
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#[error(display = "Invalid UTF-8: {}", _0)]
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InvalidUTF8String(#[error(source)] std::string::FromUtf8Error),
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#[error(display = "Invalid base64: {}", _0)]
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InvalidBase64(#[error(source)] base64::DecodeError),
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#[error(display = "Invalid XML: {}", _0)]
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InvalidXML(#[error(source)] roxmltree::Error),
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#[error(display = "Invalid header value: {}", _0)]
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InvalidHeader(#[error(source)] hyper::header::ToStrError),
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#[error(display = "Invalid HTTP range: {:?}", _0)]
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InvalidRange(#[error(from)] http_range::HttpRangeParseError),
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#[error(display = "Bad request: {}", _0)]
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BadRequest(String),
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}
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impl Error {
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pub fn http_status_code(&self) -> StatusCode {
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match self {
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Error::NotFound => StatusCode::NOT_FOUND,
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Error::Forbidden(_) => StatusCode::FORBIDDEN,
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Error::InternalError(GarageError::RPC(_)) => StatusCode::SERVICE_UNAVAILABLE,
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Error::InternalError(_) | Error::Hyper(_) | Error::HTTP(_) => {
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StatusCode::INTERNAL_SERVER_ERROR
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}
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_ => StatusCode::BAD_REQUEST,
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}
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}
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}
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pub trait OkOrBadRequest {
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type S2;
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fn ok_or_bad_request(self, reason: &'static str) -> Self::S2;
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}
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impl<T, E> OkOrBadRequest for Result<T, E>
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where
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E: std::fmt::Display,
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{
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type S2 = Result<T, Error>;
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fn ok_or_bad_request(self, reason: &'static str) -> Result<T, Error> {
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match self {
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Ok(x) => Ok(x),
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Err(e) => Err(Error::BadRequest(format!("{}: {}", reason, e))),
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}
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}
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}
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impl<T> OkOrBadRequest for Option<T> {
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type S2 = Result<T, Error>;
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fn ok_or_bad_request(self, reason: &'static str) -> Result<T, Error> {
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match self {
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Some(x) => Ok(x),
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None => Err(Error::BadRequest(format!("{}", reason))),
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}
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}
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}
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pub trait OkOrInternalError {
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type S2;
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fn ok_or_internal_error(self, reason: &'static str) -> Self::S2;
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}
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impl<T, E> OkOrInternalError for Result<T, E>
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where
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E: std::fmt::Display,
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{
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type S2 = Result<T, Error>;
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fn ok_or_internal_error(self, reason: &'static str) -> Result<T, Error> {
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match self {
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Ok(x) => Ok(x),
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Err(e) => Err(Error::InternalError(GarageError::Message(format!(
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"{}: {}",
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reason, e
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)))),
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}
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}
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}
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impl<T> OkOrInternalError for Option<T> {
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type S2 = Result<T, Error>;
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fn ok_or_internal_error(self, reason: &'static str) -> Result<T, Error> {
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match self {
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Some(x) => Ok(x),
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None => Err(Error::InternalError(GarageError::Message(format!(
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"{}",
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reason
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)))),
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}
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}
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}
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