Trait sc_light::fetcher::Fetcher

source · [−]
pub trait Fetcher<Block>: Send + Sync where
    Block: Block, {
    type RemoteHeaderResult: 'static + Future + Unpin + Send;
    type RemoteReadResult: 'static + Future + Unpin + Send;
    type RemoteCallResult: 'static + Future + Unpin + Send;
    type RemoteChangesResult: 'static + Future + Unpin + Send;
    type RemoteBodyResult: 'static + Future + Unpin + Send;
    fn remote_header(
        &self, 
        request: RemoteHeaderRequest<<Block as Block>::Header>
    ) -> Self::RemoteHeaderResult;

    fn remote_read(
        &self, 
        request: RemoteReadRequest<<Block as Block>::Header>
    ) -> Self::RemoteReadResult;

    fn remote_read_child(
        &self, 
        request: RemoteReadChildRequest<<Block as Block>::Header>
    ) -> Self::RemoteReadResult;

    fn remote_call(
        &self, 
        request: RemoteCallRequest<<Block as Block>::Header>
    ) -> Self::RemoteCallResult;

    fn remote_changes(
        &self, 
        request: RemoteChangesRequest<<Block as Block>::Header>
    ) -> Self::RemoteChangesResult;

    fn remote_body(
        &self, 
        request: RemoteBodyRequest<<Block as Block>::Header>
    ) -> Self::RemoteBodyResult;
}
Expand description

Light client data fetcher. Implementations of this trait must check if remote data is correct (see FetchedDataChecker) and return already checked data.

Associated Types

Remote header future.

Remote storage read future.

Remote call result future.

Remote changes result future.

Remote block body result future.

Required methods

Fetch remote header.

Fetch remote storage value.

Fetch remote storage child value.

Fetch remote call result.

Fetch remote changes ((block number, extrinsic index)) where given key has been changed at a given blocks range.

source

fn remote_body(
    &self,
    request: RemoteBodyRequest<<Block as Block>::Header>
) -> Self::RemoteBodyResult

Fetch remote block body

Implementors