mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-07-04 19:47:23 +00:00
Tomasz Drwięga
5169155f94
* Add instructions. * Squashed 'bridges/' content from commit 345e84a21 git-subtree-dir: bridges git-subtree-split: 345e84a2146b56628e9888c9f5e129cb40e868a9 * Remove bridges workspace file to avoid confusing Cargo. * Add some bridges primitives to Polkadot workspace. * Improve docs.
81 lines
3.2 KiB
Rust
81 lines
3.2 KiB
Rust
// Copyright 2019-2020 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common 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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// Parity Bridges Common 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 Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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//! Storage primitives for the Substrate light client (a.k.a bridge) pallet.
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use bp_header_chain::AuthoritySet;
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use codec::{Decode, Encode};
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use core::default::Default;
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#[cfg(feature = "std")]
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use serde::{Deserialize, Serialize};
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use sp_finality_grandpa::{AuthorityList, SetId};
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use sp_runtime::traits::Header as HeaderT;
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use sp_runtime::RuntimeDebug;
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/// Data required for initializing the bridge pallet.
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///
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/// The bridge needs to know where to start its sync from, and this provides that initial context.
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#[derive(Default, Encode, Decode, RuntimeDebug, PartialEq, Clone)]
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#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
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pub struct InitializationData<H: HeaderT> {
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/// The header from which we should start syncing.
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pub header: H,
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/// The initial authorities of the pallet.
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pub authority_list: AuthorityList,
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/// The ID of the initial authority set.
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pub set_id: SetId,
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/// The first scheduled authority set change of the pallet.
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pub scheduled_change: Option<ScheduledChange<H::Number>>,
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/// Should the pallet block transaction immediately after initialization.
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pub is_halted: bool,
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}
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/// Keeps track of when the next GRANDPA authority set change will occur.
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#[derive(Default, Encode, Decode, RuntimeDebug, PartialEq, Clone)]
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#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
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pub struct ScheduledChange<N> {
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/// The authority set that will be used once this change is enacted.
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pub authority_set: AuthoritySet,
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/// The block height at which the authority set should be enacted.
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///
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/// Note: It will only be enacted once a header at this height is finalized.
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pub height: N,
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}
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/// A more useful representation of a header for storage purposes.
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#[derive(Default, Encode, Decode, Clone, RuntimeDebug, PartialEq)]
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pub struct ImportedHeader<H: HeaderT> {
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/// A plain Substrate header.
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pub header: H,
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/// Does this header enact a new authority set change. If it does
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/// then it will require a justification.
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pub requires_justification: bool,
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/// Has this header been finalized, either explicitly via a justification,
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/// or implicitly via one of its children getting finalized.
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pub is_finalized: bool,
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/// The hash of the header which scheduled a change on this fork. If there are currently
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/// not pending changes on this fork this will be empty.
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pub signal_hash: Option<H::Hash>,
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}
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impl<H: HeaderT> core::ops::Deref for ImportedHeader<H> {
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type Target = H;
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fn deref(&self) -> &H {
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&self.header
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}
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}
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