Trait SnapSyncContext 

pub trait SnapSyncContext: Send {
    // Required methods
    fn head(&self) -> Result<u64, SnapSyncError>;
    fn wait_for_progress(
        &mut self,
        head: u64,
    ) -> impl Future<Output = bool> + Send;

    // Provided method
    fn finalized(&self) -> Result<Option<u64>, SnapSyncError> { ... }
}

What a SnapBootstrap needs to know about the chain and peers it synchronizes from.

Required Methods

fn head(&self) -> Result<u64, SnapSyncError>

Highest block whose canonical header is downloaded.

fn wait_for_progress(&mut self, head: u64) -> impl Future<Output = bool> + Send

Waits for a reason to retry the stalled step and returns true if one came, such as new peers connecting or a retry delay passing. Returns false if the run should stop instead, so the caller can refresh its headers, as when a new target arrived or the source of targets is gone.

Provided Methods

fn finalized(&self) -> Result<Option<u64>, SnapSyncError>

Latest finalized block, preferred as the pivot when recent enough. None if no finalized block is known locally yet.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors