Revamp errors in aws-inlineable

aws/rust-runtime/aws-inlineable/src/presigning.rs

@@ -50,30 +50,40 @@ pub mod config {
  }
  }
 
- /// `PresigningConfig` build errors.
- #[non_exhaustive]
  #[derive(Debug)]
- pub enum Error {
+ enum ErrorKind {
  /// Presigned requests cannot be valid for longer than one week.
  ExpiresInDurationTooLong,
 
  /// The `PresigningConfig` builder requires a value for `expires_in`.
  ExpiresInRequired,
  }
 
+ /// `PresigningConfig` build errors.
+ #[derive(Debug)]
+ pub struct Error {
+ kind: ErrorKind,
+ }
+
  impl std::error::Error for Error {}
 
  impl fmt::Display for Error {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- match self {
- Error::ExpiresInDurationTooLong => {
+ match self.kind {
+ ErrorKind::ExpiresInDurationTooLong => {
  write!(f, "`expires_in` must be no longer than one week")
  }
- Error::ExpiresInRequired => write!(f, "`expires_in` is required"),
+ ErrorKind::ExpiresInRequired => write!(f, "`expires_in` is required"),
  }
  }
  }
 
+ impl From<ErrorKind> for Error {
+ fn from(kind: ErrorKind) -> Self {
+ Self { kind }
+ }
+ }
+
  /// Builder used to create `PresigningConfig`.
  #[non_exhaustive]
  #[derive(Default, Debug)]
@@ -134,9 +144,9 @@ pub mod config {
  /// Builds the `PresigningConfig`. This will error if `expires_in` is not
  /// given, or if it's longer than one week.
  pub fn build(self) -> Result<PresigningConfig, Error> {
- let expires_in = self.expires_in.ok_or(Error::ExpiresInRequired)?;
+ let expires_in = self.expires_in.ok_or(ErrorKind::ExpiresInRequired)?;
  if expires_in > ONE_WEEK {
- return Err(Error::ExpiresInDurationTooLong);
+ return Err(ErrorKind::ExpiresInDurationTooLong.into());
  }
  Ok(PresigningConfig {
  start_time: self.start_time.unwrap_or_else(SystemTime::now),