Files
pezkuwi-subxt/substrate/client/api/src/lib.rs
T
Bastian Köcher fd6b29dd2c Remove requirement on Hash = H256, make Proposer return StorageChanges and Proof (#3860)
* Extend `Proposer` to optionally generate a proof of the proposal

* Something

* Refactor sr-api to not depend on client anymore

* Fix benches

* Apply suggestions from code review

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Apply suggestions from code review

* Introduce new `into_storage_changes` function

* Switch to runtime api for `execute_block` and don't require `H256`
anywhere in the code

* Put the `StorageChanges` into the `Proposal`

* Move the runtime api error to its own trait

* Adds `StorageTransactionCache` to the runtime api

This requires that we add `type NodeBlock = ` to the
`impl_runtime_apis!` macro to work around some bugs in rustc :(

* Remove `type NodeBlock` and switch to a "better" hack

* Start using the transaction cache from the runtime api

* Make it compile

* Move `InMemory` to its own file

* Make all tests work again

* Return block, storage_changes and proof from Blockbuilder::bake()

* Make sure that we use/set `storage_changes` when possible

* Add test

* Fix deadlock

* Remove accidentally added folders

* Introduce `RecordProof` as argument type to be more explicit

* Update client/src/client.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Update primitives/state-machine/src/ext.rs

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* Integrates review feedback

* Remove `unsafe` usage

* Update client/block-builder/src/lib.rs

Co-Authored-By: Benjamin Kampmann <ben@gnunicorn.org>

* Update client/src/call_executor.rs

* Bump versions

Co-authored-by: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
Co-authored-by: Benjamin Kampmann <ben.kampmann@googlemail.com>
2020-01-10 10:48:32 +01:00

78 lines
2.5 KiB
Rust

// Copyright 2019-2020 Parity Technologies (UK) Ltd.
// This file is part of Substrate.
// Substrate 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.
// Substrate 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 Substrate. If not, see <http://www.gnu.org/licenses/>.
//! Substrate client interfaces.
#![warn(missing_docs)]
pub mod backend;
pub mod call_executor;
pub mod client;
pub mod execution_extensions;
pub mod light;
pub mod notifications;
pub use sp_blockchain as blockchain;
pub use backend::*;
pub use notifications::*;
pub use call_executor::*;
pub use client::*;
pub use light::*;
pub use notifications::*;
pub use sp_state_machine::{StorageProof, ExecutionStrategy};
/// Utility methods for the client.
pub mod utils {
use sp_blockchain::{HeaderBackend, HeaderMetadata, Error};
use sp_runtime::traits::Block as BlockT;
use std::borrow::Borrow;
/// Returns a function for checking block ancestry, the returned function will
/// return `true` if the given hash (second parameter) is a descendent of the
/// base (first parameter). If the `current` parameter is defined, it should
/// represent the current block `hash` and its `parent hash`, if given the
/// function that's returned will assume that `hash` isn't part of the local DB
/// yet, and all searches in the DB will instead reference the parent.
pub fn is_descendent_of<'a, Block: BlockT, T>(
client: &'a T,
current: Option<(Block::Hash, Block::Hash)>,
) -> impl Fn(&Block::Hash, &Block::Hash) -> Result<bool, Error> + 'a
where T: HeaderBackend<Block> + HeaderMetadata<Block, Error = Error>,
{
move |base, hash| {
if base == hash { return Ok(false); }
let current = current.as_ref().map(|(c, p)| (c.borrow(), p.borrow()));
let mut hash = hash;
if let Some((current_hash, current_parent_hash)) = current {
if base == current_hash { return Ok(false); }
if hash == current_hash {
if base == current_parent_hash {
return Ok(true);
} else {
hash = current_parent_hash;
}
}
}
let ancestor = sp_blockchain::lowest_common_ancestor(client, *hash, *base)?;
Ok(ancestor.hash == *base)
}
}
}