Struct OAuth2ClientCredentialsProvider 

pub struct OAuth2ClientCredentialsProvider { /* private fields */ }

OAuth2 client_credentials grant provider.

Implementations

impl OAuth2ClientCredentialsProvider

pub fn from_config(config: &Value) -> Result<Self, FaucetError>

Build from a config object with token_url, client_id, client_secret, optional scopes and expiry_ratio.

Trait Implementations

impl AuthProvider for OAuth2ClientCredentialsProvider

fn credential<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Credential, FaucetError>> + Send + 'async_trait>>

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

Return a currently-valid credential, refreshing if needed.

fn invalidate<'life0, 'life1, 'async_trait>( &'life0 self, stale: &'life1 Credential, ) -> Pin<Box<dyn Future<Output = Result<Credential, FaucetError>> + Send + 'async_trait>>

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

Force a refresh iff the cached credential still equals stale (compare-and-swap). Multiple connectors that hit a 401 with the same token collapse into a single refresh; callers holding an already-rotated token get the new one without triggering another fetch.

fn provider_name(&self) -> &'static str

Stable, non-empty name for diagnostics and metrics.

impl Debug for OAuth2ClientCredentialsProvider

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

Formats the value using the given formatter.