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Import multiple authority set change blocks (#1808)

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* core: implement logic for tracking dag of possible pending changes

* core: move pending justifications dag to its own crate

* core: remove unnecessary clone bounds on dag

* core: request justifications in-order from the dag

* core: dag: rename changes variables to node

* core: dag: allow finalizing blocks not part of dag

* core: dag: track best finalized number

* core: dag: add more tests

* core: sync: clean up pending justifications dag

* core: dag: derive codec decode encode

* core: dag: better error support

* core: dag: add finalization guarded by predicate

* core: grandpa: track multiple authority set changes in dag

* core: dag: add pre-order iterator

* core: grandpa: request justifications on startup

* core: dag: rearrange order of definitions

* core: rename util/dag to util/fork_tree

* core: fork_tree: add docs

* core: fork_tree: add more tests

* core: fork_tree: fix issues found in tests

* core: grandpa: fix authorities tests

* core: grandpa: add docs for is_descendent_of

* core: sync: add docs for PendingJustifications

* core: sync: add test for justification requests across forks

* core: sync: don't resend import or finality notifications in tests

* core: grandpa: add test for importing multiple change blocks

* core: grandpa: fix logic for checking if a block enacts a change

* core: grandpa: fix authorities tests
This commit is contained in:
André Silva
2019-02-19 23:08:43 +00:00
committed by Gav Wood
parent c5d3da32f2
commit 21779b8cf2
16 changed files with 1322 additions and 273 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/core/network/src/chain.rs
+17
View File
@@ -68,6 +68,9 @@ pub trait Client<Block: BlockT>: Send + Sync {
max: Block::Hash,
key: &StorageKey
) -> Result<ChangesProof<Block::Header>, Error>;
/// Returns `true` if the given `block` is a descendent of `base`.
fn is_descendent_of(&self, base: &Block::Hash, block: &Block::Hash) -> Result<bool, Error>;
}
impl<B, E, Block, RA> Client<Block> for SubstrateClient<B, E, Block, RA> where
@@ -129,4 +132,18 @@ impl<B, E, Block, RA> Client<Block> for SubstrateClient<B, E, Block, RA> where
) -> Result<ChangesProof<Block::Header>, Error> {
(self as &SubstrateClient<B, E, Block, RA>).key_changes_proof(first, last, min, max, key)
}
fn is_descendent_of(&self, base: &Block::Hash, block: &Block::Hash) -> Result<bool, Error> {
if base == block {
return Ok(false);
}
let tree_route = ::client::blockchain::tree_route(
self.backend().blockchain(),
BlockId::Hash(*block),
BlockId::Hash(*base),
)?;
Ok(tree_route.common_block().hash == *base)
}
}