Trait PolicySource 

pub trait PolicySource:
    Send
    + Sync
    + 'static {
    // Required methods
    fn name(&self) -> &str;
    fn snapshot<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<Db, SourceError>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;

    // Provided method
    fn changed<'life0, 'async_trait>(
        &'life0 self,
        basis_t: u64,
    ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait { ... }
}

Supplies snapshots of the authorization database.

Required Methods

fn name(&self) -> &str

Name of the authz database, for errors and audit lines.

fn snapshot<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Db, SourceError>> + Send + 'async_trait>>

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

The current snapshot.

Errors

Returns SourceError when the database is missing or unreadable; the authorizer fails closed on it.

Provided Methods

fn changed<'life0, 'async_trait>( &'life0 self, basis_t: u64, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

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

Resolves when the source may have advanced past basis_t.

The default polls. Sources with a change signal (a transactor’s basis watch, a peer’s tx-report broadcast) override this so a policy change propagates immediately instead of within one poll interval.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl PolicySource for MemoryPolicySource