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|
use err_derive::Error;
use hyper::header::HeaderValue;
use hyper::{Body, HeaderMap, StatusCode};
use garage_model::helper::error::Error as HelperError;
use crate::common_error::CommonError;
pub use crate::common_error::{CommonErrorDerivative, OkOrBadRequest, OkOrInternalError};
use crate::generic_server::ApiError;
use crate::helpers::CustomApiErrorBody;
use crate::signature::error::Error as SignatureError;
/// Errors of this crate
#[derive(Debug, Error)]
pub enum Error {
#[error(display = "{}", _0)]
/// Error from common error
Common(CommonError),
// Category: cannot process
/// Authorization Header Malformed
#[error(display = "Authorization header malformed, unexpected scope: {}", _0)]
AuthorizationHeaderMalformed(String),
/// The object requested don't exists
#[error(display = "Key not found")]
NoSuchKey,
/// Some base64 encoded data was badly encoded
#[error(display = "Invalid base64: {}", _0)]
InvalidBase64(#[error(source)] base64::DecodeError),
/// The client sent a header with invalid value
#[error(display = "Invalid header value: {}", _0)]
InvalidHeader(#[error(source)] hyper::header::ToStrError),
/// The client asked for an invalid return format (invalid Accept header)
#[error(display = "Not acceptable: {}", _0)]
NotAcceptable(String),
/// The request contained an invalid UTF-8 sequence in its path or in other parameters
#[error(display = "Invalid UTF-8: {}", _0)]
InvalidUtf8Str(#[error(source)] std::str::Utf8Error),
}
impl<T> From<T> for Error
where
CommonError: From<T>,
{
fn from(err: T) -> Self {
Error::Common(CommonError::from(err))
}
}
impl CommonErrorDerivative for Error {}
impl From<HelperError> for Error {
fn from(err: HelperError) -> Self {
match err {
HelperError::Internal(i) => Self::Common(CommonError::InternalError(i)),
HelperError::BadRequest(b) => Self::Common(CommonError::BadRequest(b)),
HelperError::InvalidBucketName(n) => Self::Common(CommonError::InvalidBucketName(n)),
HelperError::NoSuchBucket(n) => Self::Common(CommonError::NoSuchBucket(n)),
e => Self::Common(CommonError::BadRequest(format!("{}", e))),
}
}
}
impl From<SignatureError> for Error {
fn from(err: SignatureError) -> Self {
match err {
SignatureError::Common(c) => Self::Common(c),
SignatureError::AuthorizationHeaderMalformed(c) => {
Self::AuthorizationHeaderMalformed(c)
}
SignatureError::InvalidUtf8Str(i) => Self::InvalidUtf8Str(i),
SignatureError::InvalidHeader(h) => Self::InvalidHeader(h),
}
}
}
impl Error {
/// This returns a keyword for the corresponding error.
/// Here, these keywords are not necessarily those from AWS S3,
/// as we are building a custom API
fn code(&self) -> &'static str {
match self {
Error::Common(c) => c.aws_code(),
Error::NoSuchKey => "NoSuchKey",
Error::NotAcceptable(_) => "NotAcceptable",
Error::AuthorizationHeaderMalformed(_) => "AuthorizationHeaderMalformed",
Error::InvalidBase64(_) => "InvalidBase64",
Error::InvalidHeader(_) => "InvalidHeaderValue",
Error::InvalidUtf8Str(_) => "InvalidUtf8String",
}
}
}
impl ApiError for Error {
/// Get the HTTP status code that best represents the meaning of the error for the client
fn http_status_code(&self) -> StatusCode {
match self {
Error::Common(c) => c.http_status_code(),
Error::NoSuchKey => StatusCode::NOT_FOUND,
Error::NotAcceptable(_) => StatusCode::NOT_ACCEPTABLE,
Error::AuthorizationHeaderMalformed(_)
| Error::InvalidBase64(_)
| Error::InvalidHeader(_)
| Error::InvalidUtf8Str(_) => StatusCode::BAD_REQUEST,
}
}
fn add_http_headers(&self, header_map: &mut HeaderMap<HeaderValue>) {
use hyper::header;
header_map.append(header::CONTENT_TYPE, "application/json".parse().unwrap());
}
fn http_body(&self, garage_region: &str, path: &str) -> Body {
let error = CustomApiErrorBody {
code: self.code().to_string(),
message: format!("{}", self),
path: path.to_string(),
region: garage_region.to_string(),
};
Body::from(serde_json::to_string_pretty(&error).unwrap_or_else(|_| {
r#"
{
"code": "InternalError",
"message": "JSON encoding of error failed"
}
"#
.into()
}))
}
}
|
