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The storage runtime interface should not enforce a hash type (#4231)

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* The storage runtime interface should not enforce a hash type

Currently the runtime interface enforces `H256` as hash type, but in the
future people could use whatever they want as hash type. The hash type
always needs to match between the runtime and the node, but that is
already required.

* Update primitives/externalities/src/lib.rs

Co-Authored-By: thiolliere <gui.thiolliere@gmail.com>
This commit is contained in:
Bastian Köcher
2019-11-28 01:00:29 +01:00
committed by Gavin Wood
parent 39388b826b
commit 3e26fceda4
29 changed files with 253 additions and 165 deletions
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substrate/frame/system/src/lib.rs
+7 -3
View File
@@ -668,13 +668,17 @@ impl<T: Trait> Module<T> {
}
}
let storage_root = T::Hashing::storage_root();
let storage_changes_root = T::Hashing::storage_changes_root(parent_hash);
let storage_root = T::Hash::decode(&mut &runtime_io::storage::root()[..])
.expect("Node is configured to use the same hash; qed");
let storage_changes_root = runtime_io::storage::changes_root(&parent_hash.encode());
// we can't compute changes trie root earlier && put it to the Digest
// because it will include all currently existing temporaries.
if let Some(storage_changes_root) = storage_changes_root {
let item = generic::DigestItem::ChangesTrieRoot(storage_changes_root);
let item = generic::DigestItem::ChangesTrieRoot(
T::Hash::decode(&mut &storage_changes_root[..])
.expect("Node is configured to use the same hash; qed")
);
digest.push(item);
}