Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    Http(Error),
    HttpStatus(StatusCode),
    CredentialsBuild(Error),
    Credentials(CredentialsError),
    TonicMetadata(InvalidMetadataValue),
    GrpcStatus(Error),
    UrlError(InvalidUri),
    InvalidApiUrl(String),
    HeaderValue(InvalidHeaderValue),
    IdTokenNeedsImpersonation(IdTokenUnsupportedCredentials),
    InvalidImpersonationUrl(String),
    CryptoProviderMissing,
}

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)

An HTTP status other than 2xx.

CredentialsBuild(Error)

Credentials could not be built: no Application Default Credentials were found, or a credentials file is malformed or of a type the token cannot be minted from.

Credentials(CredentialsError)

Credentials failed to produce a token: a token endpoint refused them or could not be reached. CredentialsError::is_transient says whether a retry may succeed.

TonicMetadata(InvalidMetadataValue)

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.

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 Application Default Credentials hold no service account to mint an ID token as. An ID token needs a service account to impersonate, given to GoogleAuthHeaders::id_token_impersonating.

InvalidImpersonationUrl(String)

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

CryptoProviderMissing

The Application Default Credentials sign with a private key of their own, such as a service account key file, and no rustls CryptoProvider is installed to sign with.

Only reported when the auth-default-crypto feature is off. Install a provider with CryptoProvider::install_default before building a client, or enable that feature.

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.