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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| use cfg_primitives::SECONDS_PER_WEEK; | ||
| use codec::{Decode, Encode, MaxEncodedLen}; | ||
| use frame_support::RuntimeDebug; | ||
| use pallet_loans::entities::changes::{Change as LoansChange, InternalMutation, LoanMutation}; | ||
| use pallet_pool_system::pool_types::changes::{PoolChangeProposal, Requirement}; | ||
| use scale_info::TypeInfo; | ||
| use sp_runtime::DispatchError; | ||
| use sp_std::{marker::PhantomData, vec, vec::Vec}; | ||
|
|
||
| /// Auxiliar type to carry all pallets bounds used by RuntimeChange | ||
| pub trait Changeable: pallet_loans::Config {} | ||
| impl<T: pallet_loans::Config> Changeable for T {} | ||
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|
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| /// A change done in the runtime, shared between pallets | ||
| #[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)] | ||
| pub enum RuntimeChange<T: Changeable, Options: Clone = ()> { | ||
| Loans(LoansChange<T>), | ||
| _Unreachable(PhantomData<Options>), | ||
| } | ||
|
|
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| impl<T: Changeable, Options: Clone> RuntimeChange<T, Options> { | ||
| fn requirement_list(self) -> Vec<Requirement> { | ||
| let epoch = Requirement::NextEpoch; | ||
| let week = Requirement::DelayTime(SECONDS_PER_WEEK as u32); | ||
| let blocked = Requirement::BlockedByLockedRedemptions; | ||
|
|
||
| match self { | ||
| RuntimeChange::Loans(change) => match change { | ||
| // Requirements gathered from | ||
| // <https://docs.google.com/spreadsheets/d/1RJ5RLobAdumXUK7k_ugxy2eDAwI5akvtuqUM2Tyn5ts> | ||
| LoansChange::<T>::Loan(_, loan_mutation) => match loan_mutation { | ||
| LoanMutation::Maturity(_) => vec![week, blocked], | ||
| LoanMutation::MaturityExtension(_) => vec![], | ||
| LoanMutation::InterestPayments(_) => vec![week, blocked], | ||
| LoanMutation::PayDownSchedule(_) => vec![week, blocked], | ||
| LoanMutation::InterestRate(_) => vec![epoch], | ||
| LoanMutation::Internal(mutation) => match mutation { | ||
| InternalMutation::ValuationMethod(_) => vec![week, blocked], | ||
| InternalMutation::ProbabilityOfDefault(_) => vec![epoch], | ||
| InternalMutation::LossGivenDefault(_) => vec![epoch], | ||
| InternalMutation::DiscountRate(_) => vec![epoch], | ||
| }, | ||
| }, | ||
| LoansChange::<T>::Policy(_) => vec![week, blocked], | ||
| LoansChange::<T>::TransferDebt(_, _, _, _) => vec![], | ||
| }, | ||
| RuntimeChange::_Unreachable(_) => vec![], | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<T: Changeable> From<RuntimeChange<T>> for PoolChangeProposal { | ||
| fn from(runtime_change: RuntimeChange<T>) -> Self { | ||
| if cfg!(feature = "runtime-benchmarks") { | ||
| PoolChangeProposal::new([]) | ||
| } else { | ||
| PoolChangeProposal::new(runtime_change.requirement_list()) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /// Option to pass to RuntimeChange to enable fast delays | ||
| #[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)] | ||
| pub struct FastDelay; | ||
|
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| impl<T: Changeable> From<RuntimeChange<T, FastDelay>> for PoolChangeProposal { | ||
| fn from(runtime_change: RuntimeChange<T, FastDelay>) -> Self { | ||
| let new_requirements = runtime_change | ||
| .requirement_list() | ||
| .into_iter() | ||
| .map(|req| match req { | ||
| Requirement::DelayTime(_) => Requirement::DelayTime(60), // 1 min | ||
| req => req, | ||
| }); | ||
|
|
||
| PoolChangeProposal::new(new_requirements) | ||
| } | ||
| } | ||
|
|
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| macro_rules! runtime_change_support { | ||
| ($change:ident, $variant:ident) => { | ||
| /// Used by `ChangeGuard::note()` | ||
| impl<T: Changeable, Option: Clone> From<$change<T>> for RuntimeChange<T, Option> { | ||
| fn from(change: $change<T>) -> RuntimeChange<T, Option> { | ||
| RuntimeChange::$variant(change) | ||
| } | ||
| } | ||
|
|
||
| /// Used `ChangeGuard::released()` | ||
| impl<T: Changeable, Option: Clone> TryInto<$change<T>> for RuntimeChange<T, Option> { | ||
| type Error = DispatchError; | ||
|
|
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| fn try_into(self) -> Result<$change<T>, DispatchError> { | ||
| match self { | ||
| RuntimeChange::$variant(change) => Ok(change), | ||
| _ => Err(DispatchError::Other("Expected another RuntimeChange")), | ||
| } | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| // Add the variants you want to support for RuntimeChange | ||
| runtime_change_support!(LoansChange, Loans); |
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