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Introduce prefixed storage with enumeration (#4185)

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* Introduce storage_next allowing iteration.  (without childtries)

* Implement prefixed storage

* impl cache in client_storage_cache (needs test)

* switch overlay change to btreemap

* Revert "impl cache in client_storage_cache"

This reverts commit c91a4848916eba87184b3dc4722cea81aec9339d.

the storage cache cannot be used this way

* Revert "Implement prefixed storage"

This reverts commit 4931088126a427082d7310ed7e83b8eea966bc20.

* Impl StoragePrefixedMap for all map storages

* remove comment

* Move all overlays to BTreeMap

* btreemap iteration improvment

* impl for child tries

* impl tests for childs

* fix

* remove cache comment

* Fix grumble
This commit is contained in:
thiolliere
2019-12-09 20:55:11 +01:00
committed by Bastian Köcher
parent fb1eb9d9e4
commit e5b6935c2a
25 changed files with 711 additions and 58 deletions
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substrate/client/src/light/backend.rs
+16
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@@ -365,6 +365,22 @@ impl<H: Hasher> StateBackend<H> for GenesisOrUnavailableState<H>
}
}
fn next_storage_key(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Self::Error> {
match *self {
GenesisOrUnavailableState::Genesis(ref state) =>
Ok(state.next_storage_key(key).expect(IN_MEMORY_EXPECT_PROOF)),
GenesisOrUnavailableState::Unavailable => Err(ClientError::NotAvailableOnLightClient),
}
}
fn next_child_storage_key(&self, storage_key: &[u8], key: &[u8]) -> Result<Option<Vec<u8>>, Self::Error> {
match *self {
GenesisOrUnavailableState::Genesis(ref state) =>
Ok(state.next_child_storage_key(storage_key, key).expect(IN_MEMORY_EXPECT_PROOF)),
GenesisOrUnavailableState::Unavailable => Err(ClientError::NotAvailableOnLightClient),
}
}
fn for_keys_with_prefix<A: FnMut(&[u8])>(&self, prefix: &[u8], action: A) {
match *self {
GenesisOrUnavailableState::Genesis(ref state) => state.for_keys_with_prefix(prefix, action),