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Fetch changes trie roots + CHT-based proof for these roots (#896)

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* build CHT for changes tries roots

* collect chnages tries roots proof in key_changes_proof

* flush check_changes_proof

* fixed compilation

* LightDataChecker now has a ref to the blockchain

* continue passing proofs

* new light db tests

* more CHT tests

* more tests for key changes proof when headers are missing

* lost files
This commit is contained in:
Svyatoslav Nikolsky
2018-11-14 18:06:10 +03:00
committed by Gav Wood
parent 7f8ee0f53b
commit fa84cec382
19 changed files with 1035 additions and 313 deletions
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substrate/core/client/src/in_mem.rs
+14 -7
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@@ -94,7 +94,8 @@ struct BlockchainStorage<Block: BlockT> {
finalized_hash: Block::Hash,
finalized_number: NumberFor<Block>,
genesis_hash: Block::Hash,
cht_roots: HashMap<NumberFor<Block>, Block::Hash>,
header_cht_roots: HashMap<NumberFor<Block>, Block::Hash>,
changes_trie_cht_roots: HashMap<NumberFor<Block>, Block::Hash>,
leaves: LeafSet<Block::Hash, NumberFor<Block>>,
}
@@ -142,7 +143,8 @@ impl<Block: BlockT> Blockchain<Block> {
finalized_hash: Default::default(),
finalized_number: Zero::zero(),
genesis_hash: Default::default(),
cht_roots: HashMap::new(),
header_cht_roots: HashMap::new(),
changes_trie_cht_roots: HashMap::new(),
leaves: LeafSet::new(),
}));
Blockchain {
@@ -233,9 +235,9 @@ impl<Block: BlockT> Blockchain<Block> {
&& this.genesis_hash == other.genesis_hash
}
/// Insert CHT root.
/// Insert header CHT root.
pub fn insert_cht_root(&self, block: NumberFor<Block>, cht_root: Block::Hash) {
self.storage.write().cht_roots.insert(block, cht_root);
self.storage.write().header_cht_roots.insert(block, cht_root);
}
fn finalize_header(&self, id: BlockId<Block>) -> error::Result<()> {
@@ -339,9 +341,14 @@ impl<Block: BlockT> light::blockchain::Storage<Block> for Blockchain<Block>
Blockchain::finalize_header(self, id)
}
fn cht_root(&self, _cht_size: u64, block: NumberFor<Block>) -> error::Result<Block::Hash> {
self.storage.read().cht_roots.get(&block).cloned()
.ok_or_else(|| error::ErrorKind::Backend(format!("CHT for block {} not exists", block)).into())
fn header_cht_root(&self, _cht_size: u64, block: NumberFor<Block>) -> error::Result<Block::Hash> {
self.storage.read().header_cht_roots.get(&block).cloned()
.ok_or_else(|| error::ErrorKind::Backend(format!("Header CHT for block {} not exists", block)).into())
}
fn changes_trie_cht_root(&self, _cht_size: u64, block: NumberFor<Block>) -> error::Result<Block::Hash> {
self.storage.read().changes_trie_cht_roots.get(&block).cloned()
.ok_or_else(|| error::ErrorKind::Backend(format!("Changes trie CHT for block {} not exists", block)).into())
}
fn cache(&self) -> Option<&blockchain::Cache<Block>> {