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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-api/src/child_state/mod.rs
+14
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@@ -34,6 +34,7 @@ pub trait ChildStateApi<Hash> {
/// RPC Metadata
type Metadata;
/// DEPRECATED: Please use `childstate_getKeysPaged` with proper paging support.
/// Returns the keys with prefix from a child storage, leave empty to get all the keys
#[rpc(name = "childstate_getKeys")]
fn storage_keys(
@@ -43,6 +44,19 @@ pub trait ChildStateApi<Hash> {
hash: Option<Hash>
) -> FutureResult<Vec<StorageKey>>;
/// Returns the keys with prefix from a child storage with pagination support.
/// Up to `count` keys will be returned.
/// If `start_key` is passed, return next keys in storage in lexicographic order.
#[rpc(name = "childstate_getKeysPaged", alias("childstate_getKeysPagedAt"))]
fn storage_keys_paged(
&self,
child_storage_key: PrefixedStorageKey,
prefix: Option<StorageKey>,
count: u32,
start_key: Option<StorageKey>,
hash: Option<Hash>,
) -> FutureResult<Vec<StorageKey>>;
/// Returns a child storage entry at a specific block's state.
#[rpc(name = "childstate_getStorage")]
fn storage(