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// Copyright (C) Moondance Labs Ltd.
// This file is part of Tanssi.
// Tanssi 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.
// Tanssi 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 Tanssi. If not, see <http://www.gnu.org/licenses/>
//! # Data Preservers Pallet
//!
//! This pallet allows container chains to select data preservers.
#![cfg_attr(not(feature = "std"), no_std)]
mod types;
pub use {pallet::*, types::*};
#[cfg(test)]
mod mock;
mod tests;
#[cfg(any(test, feature = "runtime-benchmarks"))]
mod benchmarks;
pub mod weights;
pub use weights::WeightInfo;
use {
core::fmt::Debug,
dp_core::ParaId,
frame_support::{
dispatch::DispatchErrorWithPostInfo,
pallet_prelude::*,
traits::{
fungible::{Balanced, Inspect, MutateHold},
tokens::Precision,
EitherOfDiverse, EnsureOriginWithArg,
},
DefaultNoBound,
frame_system::{pallet_prelude::*, EnsureRoot, EnsureSigned},
parity_scale_codec::FullCodec,
sp_runtime::{
traits::{CheckedAdd, CheckedSub, Get, One, Zero},
ArithmeticError, Either,
sp_std::vec::Vec,
tp_traits::StorageDeposit,
};
#[frame_support::pallet]
pub mod pallet {
use super::*;
/// Balance used by this pallet
pub type BalanceOf<T> =
<<T as Config>::Currency as Inspect<<T as frame_system::Config>::AccountId>>::Balance;
pub type ProviderRequestOf<T> = <<T as Config>::AssignmentProcessor as AssignmentProcessor<
<T as frame_system::Config>::AccountId,
>>::ProviderRequest;
pub type AssignerParameterOf<T> = <<T as Config>::AssignmentProcessor as AssignmentProcessor<
>>::AssignerParameter;
pub type AssignmentWitnessOf<T> = <<T as Config>::AssignmentProcessor as AssignmentProcessor<
>>::AssignmentWitness;
#[pallet::genesis_config]
#[derive(DefaultNoBound)]
pub struct GenesisConfig<T: Config> {
pub bootnodes: Vec<(
// ParaId the profile will be assigned to
ParaId,
// Owner of the profile
T::AccountId,
// URL of the bootnode
Vec<u8>,
// Assignment request
ProviderRequestOf<T>,
// Assignment witness (try_start_assignment is skipped)
AssignmentWitnessOf<T>,
)>,
#[serde(skip)]
pub _phantom: PhantomData<T>,
}
#[pallet::genesis_build]
impl<T: Config> BuildGenesisConfig for GenesisConfig<T> {
fn build(&self) {
for (para_id, profile_owner, url, request, witness) in self.bootnodes.clone() {
let profile = Profile {
url: url.try_into().expect("should fit in BoundedVec"),
para_ids: ParaIdsFilter::Whitelist({
let mut set = BoundedBTreeSet::new();
set.try_insert(para_id).expect("to fit in BoundedBTreeSet");
set
}),
mode: ProfileMode::Bootnode,
assignment_request: request,
let profile_id = NextProfileId::<T>::get();
Pallet::<T>::do_create_profile(profile, profile_owner, Zero::zero())
.expect("to create profile");
Pallet::<T>::do_start_assignment(profile_id, para_id, |_| Ok(witness))
.expect("to start assignment");
/// Data preservers pallet.
#[pallet::pallet]
pub struct Pallet<T>(PhantomData<T>);
#[pallet::config]
pub trait Config: frame_system::Config {
/// Overarching event type.
type RuntimeEvent: From<Event<Self>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
type RuntimeHoldReason: From<HoldReason>;
type Currency: Inspect<Self::AccountId>
+ Balanced<Self::AccountId>
+ MutateHold<Self::AccountId, Reason = Self::RuntimeHoldReason>;
type ProfileId: Default
+ FullCodec
+ TypeInfo
+ Copy
+ Clone
+ Debug
+ Eq
+ CheckedAdd
+ One
+ Ord
+ MaxEncodedLen;
// Who can call start_assignment/stop_assignment?
type AssignmentOrigin: EnsureOriginWithArg<
Self::RuntimeOrigin,
Success = Self::AccountId,
>;
// Who can call force_X?
type ForceSetProfileOrigin: EnsureOrigin<Self::RuntimeOrigin>;
#[pallet::constant]
type MaxAssignmentsPerParaId: Get<u32> + Clone;
type MaxNodeUrlLen: Get<u32> + Clone;
type MaxParaIdsVecLen: Get<u32> + Clone;
/// How much must be deposited to register a profile.
type ProfileDeposit: StorageDeposit<Profile<Self>, BalanceOf<Self>>;
type AssignmentProcessor: AssignmentProcessor<Self::AccountId>;
type WeightInfo: WeightInfo;
#[pallet::event]
#[pallet::generate_deposit(pub(super) fn deposit_event)]
pub enum Event<T: Config> {
/// The list of boot_nodes changed.
BootNodesChanged { para_id: ParaId },
ProfileCreated {
account: T::AccountId,
profile_id: T::ProfileId,
deposit: BalanceOf<T>,
ProfileUpdated {
old_deposit: BalanceOf<T>,
new_deposit: BalanceOf<T>,
ProfileDeleted {
released_deposit: BalanceOf<T>,
AssignmentStarted {
para_id: ParaId,
AssignmentStopped {
#[pallet::error]
pub enum Error<T> {
/// This container chain does not have any boot nodes
NoBootNodes,
UnknownProfileId,
NextProfileIdShouldBeAvailable,
/// Made for `AssignmentProcessor` implementors to report a mismatch between
/// `ProviderRequest` and `AssignerParameter`.
AssignmentPaymentRequestParameterMismatch,
ProfileAlreadyAssigned,
ProfileNotAssigned,
ProfileIsNotElligibleForParaId,
WrongParaId,
MaxAssignmentsPerParaIdReached,
CantDeleteAssignedProfile,
#[pallet::composite_enum]
pub enum HoldReason {
ProfileDeposit,
#[pallet::storage]
pub type Profiles<T: Config> =
StorageMap<_, Blake2_128Concat, T::ProfileId, RegisteredProfile<T>, OptionQuery>;
pub type NextProfileId<T: Config> = StorageValue<_, T::ProfileId, ValueQuery>;
pub type Assignments<T: Config> = StorageMap<
_,
Blake2_128Concat,
BoundedBTreeSet<T::ProfileId, T::MaxAssignmentsPerParaId>,
ValueQuery,
#[pallet::call]
impl<T: Config> Pallet<T> {
#[pallet::call_index(1)]
#[pallet::weight(T::WeightInfo::create_profile(
profile.url.len() as u32,
profile.para_ids.len() as u32,
))]
#[allow(clippy::useless_conversion)]
pub fn create_profile(
origin: OriginFor<T>,
profile: Profile<T>,
) -> DispatchResultWithPostInfo {
let account = ensure_signed(origin)?;
let deposit = T::ProfileDeposit::compute_deposit(&profile)?;
T::Currency::hold(&HoldReason::ProfileDeposit.into(), &account, deposit)?;
Self::do_create_profile(profile, account, deposit)
#[pallet::call_index(2)]
#[pallet::weight(T::WeightInfo::update_profile(
pub fn update_profile(
let new_deposit = T::ProfileDeposit::compute_deposit(&profile)?;
Self::do_update_profile(profile_id, profile, |existing_profile| {
ensure!(
existing_profile.account == account,
sp_runtime::DispatchError::BadOrigin,
);
if let Some(diff) = new_deposit.checked_sub(&existing_profile.deposit) {
T::Currency::hold(
&HoldReason::ProfileDeposit.into(),
&existing_profile.account,
diff,
)?;
} else if let Some(diff) = existing_profile.deposit.checked_sub(&new_deposit) {
T::Currency::release(
Precision::Exact,
Ok(new_deposit)
})
#[pallet::call_index(3)]
#[pallet::weight(T::WeightInfo::delete_profile())]
pub fn delete_profile(
Self::do_delete_profile(profile_id, |profile| {
profile.account == account,
Ok(().into())
#[pallet::call_index(4)]
#[pallet::weight(T::WeightInfo::force_create_profile(
pub fn force_create_profile(
for_account: T::AccountId,
T::ForceSetProfileOrigin::ensure_origin(origin)?;
Self::do_create_profile(profile, for_account, Zero::zero())
#[pallet::call_index(5)]
#[pallet::weight(T::WeightInfo::force_update_profile(
pub fn force_update_profile(
// We release the previous deposit
existing_profile.deposit,
// New deposit is zero since its forced
Ok(Zero::zero())
#[pallet::call_index(6)]
#[pallet::weight(T::WeightInfo::force_delete_profile())]
pub fn force_delete_profile(
Self::do_delete_profile(profile_id, |_| Ok(().into()))
#[pallet::call_index(7)]
#[pallet::weight(T::WeightInfo::start_assignment())]
pub fn start_assignment(
assigner_param: AssignerParameterOf<T>,
let assigner = T::AssignmentOrigin::ensure_origin(origin, ¶_id)?;
Self::do_start_assignment(profile_id, para_id, |profile| {
T::AssignmentProcessor::try_start_assignment(
assigner,
profile.account.clone(),
&profile.profile.assignment_request,
assigner_param,
)
#[pallet::call_index(8)]
#[pallet::weight(T::WeightInfo::stop_assignment())]
pub fn stop_assignment(
let caller = EitherOfDiverse::<
// root or para manager can call without being the owner
EitherOfDiverse<T::AssignmentOrigin, EnsureRoot<T::AccountId>>,
// otherwise it can be a simple signed account but it will require
// cheking if it is the owner of the profile
EnsureSigned<T::AccountId>,
>::ensure_origin(origin, ¶_id)?;
let mut profile = Profiles::<T>::get(profile_id).ok_or(Error::<T>::UnknownProfileId)?;
match caller {
// root or para id manager is allowed to call
Either::Left(_) => (),
// signed, must be profile owner
Either::Right(account) => ensure!(
sp_runtime::DispatchError::BadOrigin
),
let Some((assignment_para_id, assignment_witness)) = profile.assignment.take() else {
Err(Error::<T>::ProfileNotAssigned)?
if assignment_para_id != para_id {
Err(Error::<T>::WrongParaId)?
T::AssignmentProcessor::try_stop_assignment(
assignment_witness,
Profiles::<T>::insert(profile_id, profile);
{
let mut assignments = Assignments::<T>::get(para_id);
assignments.remove(&profile_id);
Assignments::<T>::insert(para_id, assignments);
Self::deposit_event(Event::AssignmentStopped {
profile_id,
para_id,
});
#[pallet::call_index(9)]
#[pallet::weight(T::WeightInfo::force_start_assignment())]
pub fn force_start_assignment(
assignment_witness: AssignmentWitnessOf<T>,
ensure_root(origin)?;
Self::do_start_assignment(profile_id, para_id, |_profile| Ok(assignment_witness))
fn do_create_profile(
let id = NextProfileId::<T>::get();
NextProfileId::<T>::set(
id.checked_add(&One::one())
.ok_or(ArithmeticError::Overflow)?,
!Profiles::<T>::contains_key(id),
Error::<T>::NextProfileIdShouldBeAvailable
Profiles::<T>::insert(
id,
RegisteredProfile {
account: account.clone(),
deposit,
profile,
assignment: None,
Self::deposit_event(Event::ProfileCreated {
account,
profile_id: id,
fn do_update_profile(
new_profile: Profile<T>,
update_deposit: impl FnOnce(
&RegisteredProfile<T>,
) -> Result<BalanceOf<T>, DispatchErrorWithPostInfo>,
let Some(existing_profile) = Profiles::<T>::get(profile_id) else {
Err(Error::<T>::UnknownProfileId)?
let new_deposit = update_deposit(&existing_profile)?;
deposit: new_deposit,
profile: new_profile,
..existing_profile
Self::deposit_event(Event::ProfileUpdated {
old_deposit: existing_profile.deposit,
new_deposit,
fn do_delete_profile(
profile_owner_check: impl FnOnce(&RegisteredProfile<T>) -> DispatchResultWithPostInfo,
let Some(profile) = Profiles::<T>::get(profile_id) else {
profile.assignment.is_none(),
Error::<T>::CantDeleteAssignedProfile,
profile_owner_check(&profile)?;
&profile.account,
profile.deposit,
Profiles::<T>::remove(profile_id);
Self::deposit_event(Event::ProfileDeleted {
released_deposit: profile.deposit,
fn do_start_assignment(
witness_producer: impl FnOnce(
-> Result<AssignmentWitnessOf<T>, DispatchErrorWithPostInfo>,
if profile.assignment.is_some() {
Err(Error::<T>::ProfileAlreadyAssigned)?
if !profile.profile.para_ids.can_assign(¶_id) {
Err(Error::<T>::ProfileIsNotElligibleForParaId)?
// Add profile id to BoundedVec early in case bound is reached
assignments
.try_insert(profile_id)
.map_err(|_| Error::<T>::MaxAssignmentsPerParaIdReached)?;
let witness = witness_producer(&profile)?;
profile.assignment = Some((para_id, witness));
Self::deposit_event(Event::AssignmentStarted {
pub fn assignments_profiles(para_id: ParaId) -> impl Iterator<Item = Profile<T>> {
Assignments::<T>::get(para_id)
.into_iter()
.filter_map(Profiles::<T>::get)
.map(|profile| profile.profile)
/// Function that will be called when a container chain is deregistered. Cleans up all the
/// storage related to this para_id.
/// Cannot fail.
pub fn para_deregistered(para_id: ParaId) {
Assignments::<T>::remove(para_id);
pub fn check_valid_for_collating(para_id: ParaId) -> DispatchResult {
if !Self::assignments_profiles(para_id)
.any(|profile| profile.mode == ProfileMode::Bootnode)
Err(Error::<T>::NoBootNodes)?
Ok(())