mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-31 06:21:02 +00:00
Serban Iorga
01538bc5fa
* SignedBlock: get justification by consensus engine id * Define ConsensusLogReader Making the check for authority changes more generic * cod review changes
108 lines
4.1 KiB
Rust
108 lines
4.1 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity Bridges Common.
|
|
|
|
// Parity Bridges Common 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.
|
|
|
|
// Parity Bridges Common 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 Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Defines traits which represent a common interface for Substrate pallets which want to
|
|
//! incorporate bridge functionality.
|
|
|
|
#![cfg_attr(not(feature = "std"), no_std)]
|
|
|
|
use bp_runtime::BasicOperatingMode;
|
|
use codec::{Codec, Decode, Encode, EncodeLike};
|
|
use core::{clone::Clone, cmp::Eq, default::Default, fmt::Debug};
|
|
use scale_info::TypeInfo;
|
|
#[cfg(feature = "std")]
|
|
use serde::{Deserialize, Serialize};
|
|
use sp_finality_grandpa::{AuthorityList, ConsensusLog, SetId, GRANDPA_ENGINE_ID};
|
|
use sp_runtime::{traits::Header as HeaderT, Digest, RuntimeDebug};
|
|
use sp_std::boxed::Box;
|
|
|
|
pub mod justification;
|
|
pub mod storage_keys;
|
|
|
|
/// A type that can be used as a parameter in a dispatchable function.
|
|
///
|
|
/// When using `decl_module` all arguments for call functions must implement this trait.
|
|
pub trait Parameter: Codec + EncodeLike + Clone + Eq + Debug + TypeInfo {}
|
|
impl<T> Parameter for T where T: Codec + EncodeLike + Clone + Eq + Debug + TypeInfo {}
|
|
|
|
/// A GRANDPA Authority List and ID.
|
|
#[derive(Default, Encode, Eq, Decode, RuntimeDebug, PartialEq, Clone, TypeInfo)]
|
|
#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
|
|
pub struct AuthoritySet {
|
|
/// List of GRANDPA authorities for the current round.
|
|
pub authorities: AuthorityList,
|
|
/// Monotonic identifier of the current GRANDPA authority set.
|
|
pub set_id: SetId,
|
|
}
|
|
|
|
impl AuthoritySet {
|
|
/// Create a new GRANDPA Authority Set.
|
|
pub fn new(authorities: AuthorityList, set_id: SetId) -> Self {
|
|
Self { authorities, set_id }
|
|
}
|
|
}
|
|
|
|
/// Data required for initializing the bridge pallet.
|
|
///
|
|
/// The bridge needs to know where to start its sync from, and this provides that initial context.
|
|
#[derive(Default, Encode, Decode, RuntimeDebug, PartialEq, Eq, Clone, TypeInfo)]
|
|
#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
|
|
pub struct InitializationData<H: HeaderT> {
|
|
/// The header from which we should start syncing.
|
|
pub header: Box<H>,
|
|
/// The initial authorities of the pallet.
|
|
pub authority_list: AuthorityList,
|
|
/// The ID of the initial authority set.
|
|
pub set_id: SetId,
|
|
/// Pallet operating mode.
|
|
pub operating_mode: BasicOperatingMode,
|
|
}
|
|
|
|
/// Abstract finality proof that is justifying block finality.
|
|
pub trait FinalityProof<Number>: Clone + Send + Sync + Debug {
|
|
/// Return number of header that this proof is generated for.
|
|
fn target_header_number(&self) -> Number;
|
|
}
|
|
|
|
/// A trait that provides helper methods for querying the consensus log.
|
|
pub trait ConsensusLogReader {
|
|
fn schedules_authorities_change(digest: &Digest) -> bool;
|
|
}
|
|
|
|
/// A struct that provides helper methods for querying the GRANDPA consensus log.
|
|
pub struct GrandpaConsensusLogReader<Number>(sp_std::marker::PhantomData<Number>);
|
|
|
|
impl<Number: Codec> GrandpaConsensusLogReader<Number> {
|
|
pub fn find_authorities_change(
|
|
digest: &Digest,
|
|
) -> Option<sp_finality_grandpa::ScheduledChange<Number>> {
|
|
// find the first consensus digest with the right ID which converts to
|
|
// the right kind of consensus log.
|
|
digest
|
|
.convert_first(|log| log.consensus_try_to(&GRANDPA_ENGINE_ID))
|
|
.and_then(|log| match log {
|
|
ConsensusLog::ScheduledChange(change) => Some(change),
|
|
_ => None,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<Number: Codec> ConsensusLogReader for GrandpaConsensusLogReader<Number> {
|
|
fn schedules_authorities_change(digest: &Digest) -> bool {
|
|
GrandpaConsensusLogReader::<Number>::find_authorities_change(digest).is_some()
|
|
}
|
|
}
|