mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 20:27:58 +00:00
Benjamin Kampmann
99ae5342eb
* removes use of sc_client::Client from sc-rpc * remove Client impl from sc-finality-benches * remove client impl from sc-finality-grandpa * read_proof accepts iterator * remove generic Executor param from ExecutorProvider * fix long ass line * code style changes * merge with master Co-authored-by: Arkadiy Paronyan <arkady.paronyan@gmail.com>
72 lines
2.6 KiB
Rust
72 lines
2.6 KiB
Rust
// Copyright 2017-2020 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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//! Proof utilities
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use sp_runtime::{
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generic::BlockId,
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traits::{Block as BlockT},
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};
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use crate::{StorageProof, ChangesProof};
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use sp_storage::{ChildInfo, StorageKey};
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/// Interface for providing block proving utilities.
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pub trait ProofProvider<Block: BlockT> {
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/// Reads storage value at a given block + key, returning read proof.
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fn read_proof(
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&self,
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id: &BlockId<Block>,
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keys: &mut dyn Iterator<Item=&[u8]>,
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) -> sp_blockchain::Result<StorageProof>;
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/// Reads child storage value at a given block + storage_key + key, returning
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/// read proof.
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fn read_child_proof(
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&self,
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id: &BlockId<Block>,
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storage_key: &[u8],
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child_info: ChildInfo,
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keys: &mut dyn Iterator<Item=&[u8]>,
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) -> sp_blockchain::Result<StorageProof>;
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/// Execute a call to a contract on top of state in a block of given hash
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/// AND returning execution proof.
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///
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/// No changes are made.
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fn execution_proof(
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&self,
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id: &BlockId<Block>,
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method: &str,
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call_data: &[u8],
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) -> sp_blockchain::Result<(Vec<u8>, StorageProof)>;
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/// Reads given header and generates CHT-based header proof.
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fn header_proof(&self, id: &BlockId<Block>) -> sp_blockchain::Result<(Block::Header, StorageProof)>;
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/// Get proof for computation of (block, extrinsic) pairs where key has been changed at given blocks range.
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/// `min` is the hash of the first block, which changes trie root is known to the requester - when we're using
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/// changes tries from ascendants of this block, we should provide proofs for changes tries roots
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/// `max` is the hash of the last block known to the requester - we can't use changes tries from descendants
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/// of this block.
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/// Works only for runtimes that are supporting changes tries.
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fn key_changes_proof(
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&self,
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first: Block::Hash,
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last: Block::Hash,
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min: Block::Hash,
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max: Block::Hash,
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storage_key: Option<&StorageKey>,
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key: &StorageKey,
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) -> sp_blockchain::Result<ChangesProof<Block::Header>>;
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}
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