Struct CredentialsError 

pub struct CredentialsError { /* private fields */ }

Represents an error using Credentials.

The Google Cloud client libraries may experience problems using credentials to create the necessary authentication headers. For example, a temporary failure to retrieve or create access tokens. Note that these failures may happen even after the credentials files are successfully loaded and parsed.

Applications rarely need to create instances of this error type. The exception might be when testing application code, where the application is mocking a client library behavior. Such tests are extremely rare, most applications should only work with the Error type.

Example

use google_cloud_gax::error::CredentialsError;
let mut headers = fetch_headers();
while let Err(e) = &headers {
    if e.is_transient() {
        headers = fetch_headers();
    }
}

fn fetch_headers() -> Result<http::HeaderMap, CredentialsError> {
}

Implementations

impl CredentialsError

pub fn is_transient(&self) -> bool

Returns true if the error is transient and may succeed in future attempts.

Example

let mut headers = fetch_headers();
while let Err(e) = &headers {
    if e.is_transient() {
        headers = fetch_headers();
    }
}

fn fetch_headers() -> Result<http::HeaderMap, CredentialsError> {
}

Trait Implementations

impl Clone for CredentialsError

fn clone(&self) -> CredentialsError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CredentialsError

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

Formats the value using the given formatter.

impl Display for CredentialsError

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

Formats the error message to include retryability and source.

impl Error for CredentialsError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl SubjectTokenProviderError for CredentialsError

fn is_transient(&self) -> bool

Return true if the error is transient and the call may succeed in the future.