mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-09 08:18:04 +00:00
Davide Galassi
f1f793718a
* Introduce Sassafras primitives * Keystore workaround * Fix doc * Use in keystore * Improve bandersnatch vrf docs * Apply review suggestions * Update README * Docs improvement * Docs fix
99 lines
2.9 KiB
Rust
99 lines
2.9 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Sassafras digests structures and helpers.
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use crate::{
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ticket::TicketClaim, vrf::VrfSignature, AuthorityId, AuthorityIndex, AuthoritySignature,
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EpochConfiguration, Randomness, Slot, SASSAFRAS_ENGINE_ID,
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};
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use scale_codec::{Decode, Encode, MaxEncodedLen};
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use scale_info::TypeInfo;
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use sp_runtime::{DigestItem, RuntimeDebug};
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use sp_std::vec::Vec;
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/// Epoch slot claim digest entry.
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///
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/// This is mandatory for each block.
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#[derive(Clone, RuntimeDebug, Encode, Decode, MaxEncodedLen, TypeInfo)]
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pub struct SlotClaim {
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/// Authority index that claimed the slot.
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pub authority_idx: AuthorityIndex,
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/// Corresponding slot number.
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pub slot: Slot,
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/// Slot claim VRF signature.
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pub vrf_signature: VrfSignature,
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/// Ticket auxiliary information for claim check.
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pub ticket_claim: Option<TicketClaim>,
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}
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/// Information about the next epoch.
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///
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/// This is mandatory in the first block of each epoch.
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#[derive(Clone, PartialEq, Eq, Encode, Decode, RuntimeDebug)]
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pub struct NextEpochDescriptor {
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/// Authorities list.
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pub authorities: Vec<AuthorityId>,
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/// Epoch randomness.
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pub randomness: Randomness,
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/// Epoch configurable parameters.
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///
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/// If not present previous epoch parameters are used.
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pub config: Option<EpochConfiguration>,
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}
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/// Runtime digest entries.
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///
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/// Entries which may be generated by on-chain code.
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#[derive(Decode, Encode, Clone, PartialEq, Eq)]
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pub enum ConsensusLog {
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/// Provides information about the next epoch parameters.
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#[codec(index = 1)]
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NextEpochData(NextEpochDescriptor),
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/// Disable the authority with given index.
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#[codec(index = 2)]
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OnDisabled(AuthorityIndex),
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}
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impl TryFrom<&DigestItem> for SlotClaim {
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type Error = ();
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fn try_from(item: &DigestItem) -> Result<Self, Self::Error> {
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item.pre_runtime_try_to(&SASSAFRAS_ENGINE_ID).ok_or(())
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}
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}
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impl From<&SlotClaim> for DigestItem {
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fn from(claim: &SlotClaim) -> Self {
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DigestItem::PreRuntime(SASSAFRAS_ENGINE_ID, claim.encode())
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}
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}
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impl TryFrom<&DigestItem> for AuthoritySignature {
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type Error = ();
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fn try_from(item: &DigestItem) -> Result<Self, Self::Error> {
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item.seal_try_to(&SASSAFRAS_ENGINE_ID).ok_or(())
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}
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}
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impl From<&AuthoritySignature> for DigestItem {
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fn from(signature: &AuthoritySignature) -> Self {
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DigestItem::Seal(SASSAFRAS_ENGINE_ID, signature.encode())
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}
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}
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