Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    Http(Error),
    HttpStatus(StatusCode),
    Auth(AuthErrorDetails),
    Metadata(String),
    TonicMetadata(InvalidMetadataValue),
    Jwt(Error),
    TokenSource,
    CredentialsJson(Error),
    CredentialsFile(Error),
    TokenJson(Error),
    TokenData,
    GrpcStatus(Error),
    UrlError(InvalidUri),
    InvalidApiUrl(String),
    ExternalCredsSourceError(String),
    HeaderValue(InvalidHeaderValue),
    IdTokenNeedsImpersonation(IdTokenUnsupportedCredentials),
    InvalidImpersonationUrl(String),
}

Represents the details of the Error

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Http(Error)

Errors that can possibly occur while accessing an HTTP server.

HttpStatus(StatusCode)

Http status code that is not 2xx when getting token.

Auth(AuthErrorDetails)

Authentication failed while obtaining or refreshing a token. Distinguishes auth failures from errors of the API call itself.

Metadata(String)

GCE metadata service error.

TonicMetadata(InvalidMetadataValue)

Jwt(Error)

JWT encode/decode error.

TokenSource

Token source error.

CredentialsJson(Error)

An error parsing credentials file.

CredentialsFile(Error)

An error reading credentials file.

TokenJson(Error)

An error from json serialization and deserialization.

TokenData

Invalid token error.

GrpcStatus(Error)

UrlError(InvalidUri)

InvalidApiUrl(String)

An API URL that parses but cannot be connected to: no scheme, a scheme other than http or https, or no host.

ExternalCredsSourceError(String)

HeaderValue(InvalidHeaderValue)

A header value built from user input (user agent, headers, the token itself) failed HTTP header validation (e.g. contained a control character).

IdTokenNeedsImpersonation(IdTokenUnsupportedCredentials)

The credentials hold no service account to mint an ID token as. An ID token needs a service account to impersonate, given to IdTokenSource::impersonating.

InvalidImpersonationUrl(String)

A service_account_impersonation_url in a credentials file that names no service account.

Trait Implementations

impl Debug for ErrorKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<ErrorKind> for Error

fn from(k: ErrorKind) -> Self

Converts to this type from the input type.