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pezkuwi-subxt/substrate/client/rpc-api/src/child_state/mod.rs
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Vivek Pandya bc53b9a03a Remove years from copyright notes. (#13415)
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Rust

// This file is part of Substrate.
// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//! Substrate child state API
use crate::state::ReadProof;
use jsonrpsee::{core::RpcResult, proc_macros::rpc};
use sp_core::storage::{PrefixedStorageKey, StorageData, StorageKey};
/// Substrate child state API
///
/// Note that all `PrefixedStorageKey` are deserialized
/// from json and not guaranteed valid.
#[rpc(client, server)]
pub trait ChildStateApi<Hash> {
/// Returns the keys with prefix from a child storage, leave empty to get all the keys
#[method(name = "childstate_getKeys", blocking)]
#[deprecated(since = "2.0.0", note = "Please use `getKeysPaged` with proper paging support")]
fn storage_keys(
&self,
child_storage_key: PrefixedStorageKey,
prefix: StorageKey,
hash: Option<Hash>,
) -> RpcResult<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.
#[method(name = "childstate_getKeysPaged", aliases = ["childstate_getKeysPagedAt"], blocking)]
fn storage_keys_paged(
&self,
child_storage_key: PrefixedStorageKey,
prefix: Option<StorageKey>,
count: u32,
start_key: Option<StorageKey>,
hash: Option<Hash>,
) -> RpcResult<Vec<StorageKey>>;
/// Returns a child storage entry at a specific block's state.
#[method(name = "childstate_getStorage", blocking)]
fn storage(
&self,
child_storage_key: PrefixedStorageKey,
key: StorageKey,
hash: Option<Hash>,
) -> RpcResult<Option<StorageData>>;
/// Returns child storage entries for multiple keys at a specific block's state.
#[method(name = "childstate_getStorageEntries", blocking)]
fn storage_entries(
&self,
child_storage_key: PrefixedStorageKey,
keys: Vec<StorageKey>,
hash: Option<Hash>,
) -> RpcResult<Vec<Option<StorageData>>>;
/// Returns the hash of a child storage entry at a block's state.
#[method(name = "childstate_getStorageHash", blocking)]
fn storage_hash(
&self,
child_storage_key: PrefixedStorageKey,
key: StorageKey,
hash: Option<Hash>,
) -> RpcResult<Option<Hash>>;
/// Returns the size of a child storage entry at a block's state.
#[method(name = "childstate_getStorageSize", blocking)]
fn storage_size(
&self,
child_storage_key: PrefixedStorageKey,
key: StorageKey,
hash: Option<Hash>,
) -> RpcResult<Option<u64>>;
/// Returns proof of storage for child key entries at a specific block's state.
#[method(name = "state_getChildReadProof", blocking)]
fn read_child_proof(
&self,
child_storage_key: PrefixedStorageKey,
keys: Vec<StorageKey>,
hash: Option<Hash>,
) -> RpcResult<ReadProof<Hash>>;
}