Struct Cached 

pub struct Cached { /* private fields */ }

Exchanges on demand and keeps the result until it is nearly expired.

Held per audience and subject: a credential obtained for one person is never lent to a run acting for another.

Implementations

impl Cached

pub const DEFAULT_SKEW: Duration

Default margin: a minute.

Long enough to cover a slow hop and a slow peer, short enough that a five-minute token is still worth caching.

pub fn new(exchange: Arc<dyn TokenExchange>) -> Self

pub const fn skew(self, skew: Duration) -> Self

Trait Implementations

impl CredentialSource for Cached

fn credential<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, audience: &'life1 PeerId, subject: &'life2 str, now: Timestamp, ) -> Pin<Box<dyn Future<Output = Result<PeerCredential, CredentialError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

The credential naming subject to present to audience, fresh at now.

fn forget(&self, subject: &str)

Drop everything held for subject, at every audience.

impl Debug for Cached

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

Formats the value using the given formatter.