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chainHead: Add support for storage closest merkle descendant #14818 (#1153)

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This PR adds support for fetching the closest merkle value of some key.


Builds on top of
- https://github.com/paritytech/trie/pull/199

Migrates https://github.com/paritytech/substrate/pull/14818 to the
monorepo.
Closes: https://github.com/paritytech/substrate/issues/14550
Closes: https://github.com/paritytech/polkadot-sdk/issues/1506

// @paritytech/subxt-team

---------

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Sebastian Kunert <skunert49@gmail.com>
This commit is contained in:
Alexandru Vasile
2023-09-18 13:54:44 +03:00
committed by GitHub
parent 20052e1675
commit 5d346643ca
15 changed files with 449 additions and 28 deletions
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substrate/client/service/src/client/client.rs
+22 -1
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@@ -78,7 +78,7 @@ use sp_state_machine::{
ChildStorageCollection, KeyValueStates, KeyValueStorageLevel, StorageCollection,
MAX_NESTED_TRIE_DEPTH,
};
use sp_trie::{CompactProof, StorageProof};
use sp_trie::{CompactProof, MerkleValue, StorageProof};
use std::{
collections::{HashMap, HashSet},
marker::PhantomData,
@@ -1545,6 +1545,27 @@ where
.child_storage_hash(child_info, &key.0)
.map_err(|e| sp_blockchain::Error::from_state(Box::new(e)))
}
fn closest_merkle_value(
&self,
hash: <Block as BlockT>::Hash,
key: &StorageKey,
) -> blockchain::Result<Option<MerkleValue<<Block as BlockT>::Hash>>> {
self.state_at(hash)?
.closest_merkle_value(&key.0)
.map_err(|e| sp_blockchain::Error::from_state(Box::new(e)))
}
fn child_closest_merkle_value(
&self,
hash: <Block as BlockT>::Hash,
child_info: &ChildInfo,
key: &StorageKey,
) -> blockchain::Result<Option<MerkleValue<<Block as BlockT>::Hash>>> {
self.state_at(hash)?
.child_closest_merkle_value(child_info, &key.0)
.map_err(|e| sp_blockchain::Error::from_state(Box::new(e)))
}
}
impl<B, E, Block, RA> HeaderMetadata<Block> for Client<B, E, Block, RA>