Function scratchstack_aws_principal::validate_region[−][src]

pub fn validate_region<S: Into<String>>(
    region: S
) -> Result<String, PrincipalError>

Verify that a region name meets the naming requirements.

AWS does not publish a formal specification for region names. In this validator, we specify:

  • The region must be composed of ASCII alphabetic characters or -. followed by a - and one or more digits, or the name "local".
  • The region can have a local region appended to it: a -, one or more ASCII alphabetic characters or -. followed by a - and one or more digits.
  • A - cannot appear in the first or last position, nor can it appear in two consecutive characters.

If region meets the requirements, it is returned. Otherwise, a PrincipalError::InvalidRegion error is returned.