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grandpa: rewrite warp sync proof generation (#8148)

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* grandpa: use AuthoritySetChanges to generate warp sync proof

* node: init grandpa warp sync protocol

* grandpa: iterator for AuthoritySetChanges

* grandpa: rewrite warp sync proof generation

* grandpa: remove old code for warp sync generation

* grandpa: fix indentation

* grandpa: fix off by one

* grandpa: use binary search to find start idx when generating warp sync proof

* grandpa: add method to verify warp sync proofs

* grandpa: remove unnecessary code to skip authority set changes

* grandpa: add test for warp sync proof generation and verification

* grandpa: add missing docs

* grandpa: remove trailing comma
This commit is contained in:
André Silva
2021-02-25 08:44:51 +00:00
committed by GitHub
parent 8a0e8ea9a6
commit 94c29ff666
10 changed files with 463 additions and 538 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/client/finality-grandpa/src/import.rs
+10 -6
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@@ -182,9 +182,11 @@ impl<'a, Block: 'a + BlockT> Drop for PendingSetChanges<'a, Block> {
}
}
pub(crate) fn find_scheduled_change<B: BlockT>(header: &B::Header)
-> Option<ScheduledChange<NumberFor<B>>>
{
/// Checks the given header for a consensus digest signalling a **standard** scheduled change and
/// extracts it.
pub fn find_scheduled_change<B: BlockT>(
header: &B::Header,
) -> Option<ScheduledChange<NumberFor<B>>> {
let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID);
let filter_log = |log: ConsensusLog<NumberFor<B>>| match log {
@@ -197,9 +199,11 @@ pub(crate) fn find_scheduled_change<B: BlockT>(header: &B::Header)
header.digest().convert_first(|l| l.try_to(id).and_then(filter_log))
}
pub(crate) fn find_forced_change<B: BlockT>(header: &B::Header)
-> Option<(NumberFor<B>, ScheduledChange<NumberFor<B>>)>
{
/// Checks the given header for a consensus digest signalling a **forced** scheduled change and
/// extracts it.
pub fn find_forced_change<B: BlockT>(
header: &B::Header,
) -> Option<(NumberFor<B>, ScheduledChange<NumberFor<B>>)> {
let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID);
let filter_log = |log: ConsensusLog<NumberFor<B>>| match log {