mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Vivek Pandya
bc53b9a03a
* Change copyright year to 2023 from 2022 * Fix incorrect update of copyright year * Remove years from copy right header * Fix remaining files * Fix typo in a header and remove update-copyright.sh
102 lines
2.9 KiB
Rust
102 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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//! Inherents for BABE
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use sp_inherents::{Error, InherentData, InherentIdentifier};
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use sp_std::result::Result;
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/// The BABE inherent identifier.
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pub const INHERENT_IDENTIFIER: InherentIdentifier = *b"babeslot";
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/// The type of the BABE inherent.
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pub type InherentType = sp_consensus_slots::Slot;
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/// Auxiliary trait to extract BABE inherent data.
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pub trait BabeInherentData {
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/// Get BABE inherent data.
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fn babe_inherent_data(&self) -> Result<Option<InherentType>, Error>;
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/// Replace BABE inherent data.
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fn babe_replace_inherent_data(&mut self, new: InherentType);
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}
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impl BabeInherentData for InherentData {
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fn babe_inherent_data(&self) -> Result<Option<InherentType>, Error> {
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self.get_data(&INHERENT_IDENTIFIER)
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}
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fn babe_replace_inherent_data(&mut self, new: InherentType) {
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self.replace_data(INHERENT_IDENTIFIER, &new);
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}
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}
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/// Provides the slot duration inherent data for BABE.
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// TODO: Remove in the future. https://github.com/paritytech/substrate/issues/8029
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#[cfg(feature = "std")]
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pub struct InherentDataProvider {
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slot: InherentType,
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}
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#[cfg(feature = "std")]
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impl InherentDataProvider {
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/// Create new inherent data provider from the given `slot`.
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pub fn new(slot: InherentType) -> Self {
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Self { slot }
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}
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/// Creates the inherent data provider by calculating the slot from the given
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/// `timestamp` and `duration`.
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pub fn from_timestamp_and_slot_duration(
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timestamp: sp_timestamp::Timestamp,
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slot_duration: sp_consensus_slots::SlotDuration,
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) -> Self {
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let slot = InherentType::from_timestamp(timestamp, slot_duration);
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Self { slot }
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}
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/// Returns the `slot` of this inherent data provider.
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pub fn slot(&self) -> InherentType {
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self.slot
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}
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}
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#[cfg(feature = "std")]
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impl sp_std::ops::Deref for InherentDataProvider {
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type Target = InherentType;
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fn deref(&self) -> &Self::Target {
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&self.slot
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}
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}
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#[cfg(feature = "std")]
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#[async_trait::async_trait]
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impl sp_inherents::InherentDataProvider for InherentDataProvider {
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async fn provide_inherent_data(&self, inherent_data: &mut InherentData) -> Result<(), Error> {
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inherent_data.put_data(INHERENT_IDENTIFIER, &self.slot)
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}
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async fn try_handle_error(
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&self,
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_: &InherentIdentifier,
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_: &[u8],
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) -> Option<Result<(), Error>> {
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// There is no error anymore
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None
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}
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}
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