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lib.rs
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lib.rs
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// Copyright 2020-2021 Parity Technologies (UK) Ltd.
// This file is part of Cumulus.
// Cumulus 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.
// Cumulus 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 Cumulus. If not, see <http://www.gnu.org/licenses/>.
//! Minimal Pallet that injects a ParachainId into Runtime storage from
#![cfg_attr(not(feature = "std"), no_std)]
pub use pallet::*;
#[frame_support::pallet]
pub mod pallet {
use frame_support::pallet_prelude::*;
use frame_system::pallet_prelude::*;
use cumulus_primitives_core::ParaId;
#[pallet::pallet]
#[pallet::generate_store(pub(super) trait Store)]
pub struct Pallet<T>(_);
#[pallet::config]
pub trait Config: frame_system::Config {}
#[pallet::hooks]
impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {}
#[pallet::call]
impl<T: Config> Pallet<T> {}
#[pallet::genesis_config]
pub struct GenesisConfig {
pub parachain_id: ParaId,
}
#[cfg(feature = "std")]
impl Default for GenesisConfig {
fn default() -> Self {
Self {
parachain_id: 100.into()
}
}
}
#[pallet::genesis_build]
impl<T: Config> GenesisBuild<T> for GenesisConfig {
fn build(&self) {
<ParachainId<T>>::put(&self.parachain_id);
}
}
#[pallet::type_value]
pub(super) fn DefaultForParachainId() -> ParaId { 100.into() }
#[pallet::storage]
#[pallet::getter(fn parachain_id)]
pub(super) type ParachainId<T: Config> = StorageValue<_, ParaId, ValueQuery, DefaultForParachainId>;
impl<T: Config> Get<ParaId> for Pallet<T> {
fn get() -> ParaId {
Self::parachain_id()
}
}
}