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Support multi-hash in multi-trie via PlainDB (#1106)

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* Temporarily pin trie to #2

* Use generic and delay trait object casting

Rust does not support super-trait upcasting

* Add PlainDB impl for Ephemeral

* Add PlainDB trait alias for completeness

* Use PlainDB for test TrieBackendStorage fetch

We always check overlay first for a storage fetch, which already checked null data. Using PlainDB here makes it work
nicer with other PlainDB overlays.

* Update trie reference

* Use HashDBRef in places when approriate

* Use PlainDBRef in places when approriate

* Update trie crate reference

* Remove unused HashDB::keys

* Patch dependencies

* Fix cargolock

* Update cargo lock again
This commit is contained in:
Wei Tang
2019-02-06 11:16:40 +01:00
committed by Arkadiy Paronyan
parent fa2e323478
commit 1ba7e35c18
11 changed files with 322 additions and 105 deletions
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substrate/core/state-machine/src/trie_backend.rs
+2 -2
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@@ -138,7 +138,7 @@ impl<S: TrieBackendStorage<H>, H: Hasher> Backend<H> for TrieBackend<S, H> where
&mut write_overlay,
);
match delta_trie_root::<H, _, _, _>(&mut eph, root, delta) {
match delta_trie_root::<H, _, _, _, _>(&mut eph, root, delta) {
Ok(ret) => root = ret,
Err(e) => warn!(target: "trie", "Failed to write to trie: {}", e),
}
@@ -169,7 +169,7 @@ impl<S: TrieBackendStorage<H>, H: Hasher> Backend<H> for TrieBackend<S, H> where
&mut write_overlay,
);
match child_delta_trie_root::<H, _, _, _>(storage_key, &mut eph, root.clone(), delta) {
match child_delta_trie_root::<H, _, _, _, _>(storage_key, &mut eph, root.clone(), delta) {
Ok(ret) => root = ret,
Err(e) => warn!(target: "trie", "Failed to write to trie: {}", e),
}