Enum Authorization 

pub enum Authorization {
    None,
    AwsSigV4Secret(AwsSigV4Secret),
    Federated(IamRole),
}

Authorization strategy for an HTTP request.

Variants

None

No special authorization. You can still include an Authorization header manually.

AwsSigV4Secret(AwsSigV4Secret)

Sign the request with AWS SigV4 using explicit credentials.

Federated(IamRole)

Federate into an IAM role for the request.