Struct DefaultCredentialProvider 

pub struct DefaultCredentialProvider { /* private fields */ }

Default credential provider for Google Cloud Storage (GCS).

Resolution order follows ADC (Application Default Credentials):

1. Env var GOOGLE_APPLICATION_CREDENTIALS
2. Well-known location (~/.config/gcloud/application_default_credentials.json)
3. VM metadata service (GCE / Cloud Functions / App Engine)

Implementations

impl DefaultCredentialProvider

pub fn builder() -> DefaultCredentialProviderBuilder

Create a builder to configure the default ADC chain for GCS.

pub fn new() -> Self

Create a new DefaultCredentialProvider with the default chain: env ADC -> well-known ADC -> VM metadata

pub fn with_chain(chain: ProvideCredentialChain<Credential>) -> Self

Create with a custom credential chain.

pub fn push_front( self, provider: impl ProvideCredential<Credential = Credential> + 'static, ) -> Self

Add a credential provider to the front of the default chain.

Trait Implementations

impl Debug for DefaultCredentialProvider

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

Formats the value using the given formatter.

impl Default for DefaultCredentialProvider

fn default() -> Self

Returns the “default value” for a type.

impl ProvideCredential for DefaultCredentialProvider

type Credential = Credential

Credential returned by this loader.

async fn provide_credential( &self, ctx: &Context, ) -> Result<Option<Self::Credential>>

Load signing credential from current env.