Trait hdk::prelude::HeaderBuilder
[−]pub trait HeaderBuilder<H> where
H: HeaderInner, {
fn build(self, common: HeaderBuilderCommon) -> H;
}Expand description
Builder for non-genesis Headers
SourceChain::put takes one of these rather than a raw Header, so that it
can inject the proper values via HeaderBuilderCommon, rather than requiring
surrounding code to construct a proper Header outside of the context of
the SourceChain.
This builder does not build pre-genesis Headers, because prior to genesis there is no Agent associated with the source chain, and also the fact that the Dna header has no prev_entry causes a special case that need not be dealt with. SourceChain::genesis already handles genesis in one fell swoop.