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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/primitives/sr-primitives/src/traits.rs
+2 -16
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@@ -384,12 +384,6 @@ pub trait Hash: 'static + MaybeSerializeDeserialize + Debug + Clone + Eq + Parti
/// The Patricia tree root of the given mapping.
fn trie_root(input: Vec<(Vec<u8>, Vec<u8>)>) -> Self::Output;
/// Acquire the global storage root.
fn storage_root() -> Self::Output;
/// Acquire the global storage changes root.
fn storage_changes_root(parent_hash: Self::Output) -> Option<Self::Output>;
}
/// Blake2-256 Hash implementation.
@@ -405,19 +399,11 @@ impl Hash for BlakeTwo256 {
}
fn trie_root(input: Vec<(Vec<u8>, Vec<u8>)>) -> Self::Output {
runtime_io::storage::blake2_256_trie_root(input)
runtime_io::trie::blake2_256_root(input)
}
fn ordered_trie_root(input: Vec<Vec<u8>>) -> Self::Output {
runtime_io::storage::blake2_256_ordered_trie_root(input)
}
fn storage_root() -> Self::Output {
runtime_io::storage::root().into()
}
fn storage_changes_root(parent_hash: Self::Output) -> Option<Self::Output> {
runtime_io::storage::changes_root(parent_hash.into()).map(Into::into)
runtime_io::trie::blake2_256_ordered_root(input)
}
}