Trait ChainSource 

pub(crate) trait ChainSource: Send + Sync {
    // Required methods
    fn block_height<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn fetch_range<'life0, 'async_trait>(
        &'life0 self,
        from: u64,
        to: u64,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<VerifiedBlock>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn fetch_cert2<'life0, 'life1, 'async_trait>(
        &'life0 self,
        header: &'life1 Header,
    ) -> Pin<Box<dyn Future<Output = Result<Option<Certificate2<SeqTypes>>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}

Where a follower reads the chain from.

Required Methods

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

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

fn fetch_range<'life0, 'async_trait>( &'life0 self, from: u64, to: u64, ) -> Pin<Box<dyn Future<Output = Result<Vec<VerifiedBlock>>> + Send + 'async_trait>>

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

The blocks at heights from..to, in order.

fn fetch_cert2<'life0, 'life1, 'async_trait>( &'life0 self, header: &'life1 Header, ) -> Pin<Box<dyn Future<Output = Result<Option<Certificate2<SeqTypes>>>> + Send + 'async_trait>>

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

The cert2 that finalized header directly, if any.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl ChainSource for NodeLightClient