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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/proving_backend.rs
+2 -2
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@@ -48,7 +48,7 @@ impl<'a, S, H> ProvingBackendEssence<'a, S, H>
let map_e = |e| format!("Trie lookup error: {}", e);
read_trie_value_with(&eph, self.backend.root(), key, &mut *self.proof_recorder).map_err(map_e)
read_trie_value_with::<H, _, Ephemeral<S, H>>(&eph, self.backend.root(), key, &mut *self.proof_recorder).map_err(map_e)
}
pub fn child_storage(&mut self, storage_key: &[u8], key: &[u8]) -> Result<Option<Vec<u8>>, String> {
@@ -74,7 +74,7 @@ impl<'a, S, H> ProvingBackendEssence<'a, S, H>
let mut iter = move || -> Result<(), Box<TrieError<H::Out>>> {
let root = self.backend.root();
record_all_keys::<H>(&eph, root, &mut *self.proof_recorder)
record_all_keys::<H, _>(&eph, root, &mut *self.proof_recorder)
};
if let Err(e) = iter() {