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Paged keys rpc for child storage. (#9100)

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* childstate_getKeysPaged rpc

* Rename `v` to `iter`.

* Update client/api/src/backend.rs

Co-authored-by: Alexander Popiak <alexander.popiak@gmail.com>

* Update client/api/src/backend.rs

Co-authored-by: Alexander Popiak <alexander.popiak@gmail.com>

Co-authored-by: Alexander Popiak <alexander.popiak@gmail.com>
This commit is contained in:
cheme
2021-07-07 09:22:13 +02:00
committed by GitHub
parent fc1199b6a1
commit d80e1bc978
7 changed files with 151 additions and 9 deletions
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substrate/client/rpc/src/state/state_full.rs
+24 -1
View File
@@ -296,7 +296,7 @@ impl<BE, Block, Client> StateBackend<Block, Client> for FullState<BE, Block, Cli
&BlockId::Hash(block), prefix.as_ref(), start_key.as_ref()
)
)
.map(|v| v.take(count as usize).collect())
.map(|iter| iter.take(count as usize).collect())
.map_err(client_err)))
}
@@ -618,6 +618,29 @@ impl<BE, Block, Client> ChildStateBackend<Block, Client> for FullState<BE, Block
.map_err(client_err)))
}
fn storage_keys_paged(
&self,
block: Option<Block::Hash>,
storage_key: PrefixedStorageKey,
prefix: Option<StorageKey>,
count: u32,
start_key: Option<StorageKey>,
) -> FutureResult<Vec<StorageKey>> {
Box::new(result(
self.block_or_best(block)
.and_then(|block| {
let child_info = match ChildType::from_prefixed_key(&storage_key) {
Some((ChildType::ParentKeyId, storage_key)) => ChildInfo::new_default(storage_key),
None => return Err(sp_blockchain::Error::InvalidChildStorageKey),
};
self.client.child_storage_keys_iter(
&BlockId::Hash(block), child_info, prefix.as_ref(), start_key.as_ref(),
)
})
.map(|iter| iter.take(count as usize).collect())
.map_err(client_err)))
}
fn storage(
&self,
block: Option<Block::Hash>,