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Fetching changes proof from remote nodes (#769)

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* changes_trie

* changs_trie: continue

* changes_trie: adding tests

* fixed TODO

* removed obsolete ExtrinsicChanges

* encodable ChangesTrieConfiguration

* removed polkadot fle

* fixed grumbles

* ext_storage_changes_root returns u32

* moved changes trie root to digest

* removed commented code

* read storage values from native code

* fixed grumbles

* fixed grumbles

* missing comma

* key changes proof generation + query

* fix grumbles

* check that changes trie config is not changed by block.finalize()

* fixed changes trie config check
This commit is contained in:
Svyatoslav Nikolsky
2018-09-29 11:47:29 +03:00
committed by Gav Wood
parent fdfd4672c1
commit c54350661d
20 changed files with 753 additions and 107 deletions
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substrate/core/client/db/src/lib.rs
+4 -2
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@@ -363,7 +363,7 @@ pub struct DbChangesTrieStorage<Block: BlockT> {
_phantom: ::std::marker::PhantomData<Block>,
}
impl<Block: BlockT> state_machine::ChangesTrieStorage<Blake2Hasher> for DbChangesTrieStorage<Block> {
impl<Block: BlockT> state_machine::ChangesTrieRootsStorage<Blake2Hasher> for DbChangesTrieStorage<Block> {
fn root(&self, block: u64) -> Result<Option<H256>, String> {
Ok(read_db::<Block>(&*self.db, columns::HASH_LOOKUP, columns::HEADER, BlockId::Number(As::sa(block)))
.map_err(|err| format!("{}", err))
@@ -378,7 +378,9 @@ impl<Block: BlockT> state_machine::ChangesTrieStorage<Blake2Hasher> for DbChange
.and_then(DigestItem::as_changes_trie_root)
.map(|root| H256::from_slice(root.as_ref()))))
}
}
impl<Block: BlockT> state_machine::ChangesTrieStorage<Blake2Hasher> for DbChangesTrieStorage<Block> {
fn get(&self, key: &H256) -> Result<Option<DBValue>, String> {
self.db.get(columns::CHANGES_TRIE, &key[..])
.map_err(|err| format!("{}", err))
@@ -750,7 +752,7 @@ mod tests {
use client::backend::BlockImportOperation as Op;
use client::blockchain::HeaderBackend as BlockchainHeaderBackend;
use runtime_primitives::testing::{Header, Block as RawBlock};
use state_machine::{TrieMut, TrieDBMut, ChangesTrieStorage};
use state_machine::{TrieMut, TrieDBMut, ChangesTrieRootsStorage, ChangesTrieStorage};
use test_client;
type Block = RawBlock<u64>;