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Child trie storage proof (#2433)

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* proof on child trie

* higher level api for child storage proof

* boilerplate for proof from light fetch

* actually check proof on light fetch

* Do not break former encoding

* tabify

* tabify2

* Add child trie root tx to full_storage_root transaction.

* Shorten long lines.

* Temp rename for audit

* Make full_storage a trait method

* Name back and replace some code with full_storage where it looks fine.

* fix indentations, remove unused import

* flush child root to top when calculated

* impl +1
This commit is contained in:
cheme
2019-05-10 14:31:41 +02:00
committed by Gavin Wood
parent 59be403730
commit 0d8379d5d2
14 changed files with 475 additions and 103 deletions
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substrate/core/client/db/src/lib.rs
+10 -13
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@@ -324,29 +324,26 @@ where Block: BlockT<Hash=H256>,
Ok(())
}
fn reset_storage(&mut self, mut top: StorageOverlay, children: ChildrenStorageOverlay) -> Result<H256, client::error::Error> {
fn reset_storage(&mut self, top: StorageOverlay, children: ChildrenStorageOverlay) -> Result<H256, client::error::Error> {
if top.iter().any(|(k, _)| well_known_keys::is_child_storage_key(k)) {
return Err(client::error::Error::GenesisInvalid.into());
}
let mut transaction: PrefixedMemoryDB<Blake2Hasher> = Default::default();
for (child_key, child_map) in children {
for child_key in children.keys() {
if !well_known_keys::is_child_storage_key(&child_key) {
return Err(client::error::Error::GenesisInvalid.into());
}
let (root, is_default, update) = self.old_state.child_storage_root(&child_key, child_map.into_iter().map(|(k, v)| (k, Some(v))));
transaction.consolidate(update);
if !is_default {
top.insert(child_key, root);
}
}
let (root, update) = self.old_state.storage_root(top.into_iter().map(|(k, v)| (k, Some(v))));
transaction.consolidate(update);
let child_delta = children.into_iter()
.map(|(storage_key, child_overlay)|
(storage_key, child_overlay.into_iter().map(|(k, v)| (k, Some(v)))));
let (root, transaction) = self.old_state.full_storage_root(
top.into_iter().map(|(k, v)| (k, Some(v))),
child_delta
);
self.db_updates = transaction;
Ok(root)