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.

pub fn with_scope(self, scope: impl Into<String>) -> Self

👎Deprecated since 1.0.0: Configure scope via specific providers or GOOGLE_SCOPE env var

Set the OAuth2 scope for ADC providers (deprecated).

This helper configures the scope used by the environment and well-known ADC providers, as well as the VM metadata provider, by constructing a new chain with the provided scope. Prefer configuring scope via specific providers (e.g., VmMetadataCredentialProvider::with_scope) or using the GOOGLE_SCOPE environment variable.

pub fn skip_env_credentials(self, skip: bool) -> Self

👎Deprecated since 1.0.0: Use DefaultCredentialProvider::builder().disable_env(skip).build() instead

pub fn skip_well_known_location(self, skip: bool) -> Self

👎Deprecated since 1.0.0: Use DefaultCredentialProvider::builder().disable_well_known(skip).build() instead

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.

fn provide_credential<'life0, 'life1, 'async_trait>( &'life0 self, ctx: &'life1 Context, ) -> Pin<Box<dyn Future<Output = Result<Option<Self::Credential>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Load signing credential from current env.