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...hain/primitives/src/bonding/controller.rs → primitives/src/bonding/controller.rs
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| @@ -1,172 +1,172 @@ | ||
| // بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم | ||
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||
| // This file is part of Setheum. | ||
|
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||
| // Copyright (C) 2019-Present Setheum Labs. | ||
| // SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0 | ||
|
|
||
| // This program 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. | ||
|
|
||
| // This program 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 this program. If not, see <https://www.gnu.org/licenses/>. | ||
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||
| use frame_support::{dispatch::DispatchResult, pallet_prelude::Member, traits::Get, Parameter, StorageMap}; | ||
| use parity_scale_codec::Codec; | ||
| use sp_runtime::DispatchError; | ||
| use sp_std::prelude::*; | ||
|
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||
| use super::error::Error; | ||
| use super::ledger::{BondingLedger, UnlockChunk}; | ||
| use crate::Balance; | ||
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| pub type BondingLedgerOf<T> = BondingLedger< | ||
| <T as BondingController>::Moment, | ||
| <T as BondingController>::MaxUnbondingChunks, | ||
| <T as BondingController>::MinBond, | ||
| >; | ||
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||
| pub struct BondChange { | ||
| pub new: Balance, | ||
| pub old: Balance, | ||
| pub change: Balance, | ||
| } | ||
| pub trait BondingController | ||
| where | ||
| BondingLedgerOf<Self>: Codec + Default, | ||
| frame_support::BoundedVec< | ||
| UnlockChunk<<Self as BondingController>::Moment>, | ||
| <Self as BondingController>::MaxUnbondingChunks, | ||
| >: Codec, | ||
| { | ||
| type MinBond: Get<Balance>; | ||
| type MaxUnbondingChunks: Get<u32>; | ||
| type Moment: Ord + Eq + Copy; | ||
| type AccountId: Parameter + Member; | ||
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| type Ledger: StorageMap<Self::AccountId, BondingLedgerOf<Self>, Query = Option<BondingLedgerOf<Self>>>; | ||
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| fn available_balance(who: &Self::AccountId, ledger: &BondingLedgerOf<Self>) -> Balance; | ||
| fn apply_ledger(who: &Self::AccountId, ledger: &BondingLedgerOf<Self>) -> DispatchResult; | ||
| fn convert_error(err: Error) -> DispatchError; | ||
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| fn bond(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).unwrap_or_default(); | ||
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| let available = Self::available_balance(who, &ledger); | ||
| let bond_amount = amount.min(available); | ||
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| if bond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
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| let old_active = ledger.active(); | ||
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| let ledger = ledger.bond(bond_amount).map_err(Self::convert_error)?; | ||
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: bond_amount, | ||
| })) | ||
| } | ||
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| fn unbond(who: &Self::AccountId, amount: Balance, at: Self::Moment) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
|
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| let (ledger, unbond_amount) = ledger.unbond(amount, at).map_err(Self::convert_error)?; | ||
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| if unbond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: unbond_amount, | ||
| })) | ||
| } | ||
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||
| fn unbond_instant(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
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| let (ledger, unbond_amount) = ledger.unbond_instant(amount).map_err(Self::convert_error)?; | ||
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| if unbond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: unbond_amount, | ||
| })) | ||
| } | ||
|
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||
| fn rebond(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
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| let (ledger, rebond_amount) = ledger.rebond(amount).map_err(Self::convert_error)?; | ||
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| if rebond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: rebond_amount, | ||
| })) | ||
| } | ||
|
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||
| fn withdraw_unbonded(who: &Self::AccountId, now: Self::Moment) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_total = ledger.total(); | ||
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| let ledger = ledger.consolidate_unlocked(now); | ||
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| let new_total = ledger.total(); | ||
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| let diff = old_total.saturating_sub(new_total); | ||
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| if diff == 0 { | ||
| return Ok(None); | ||
| } | ||
|
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| if new_total == 0 { | ||
| Self::Ledger::remove(who); | ||
| } else { | ||
| Self::Ledger::insert(who, &ledger); | ||
| } | ||
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||
| Self::apply_ledger(who, &ledger)?; | ||
|
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| Ok(Some(BondChange { | ||
| old: old_total, | ||
| new: new_total, | ||
| change: diff, | ||
| })) | ||
| } | ||
| } | ||
| // بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم | ||
|
|
||
| // This file is part of Setheum. | ||
|
|
||
| // Copyright (C) 2019-Present Setheum Labs. | ||
| // SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0 | ||
|
|
||
| // This program 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. | ||
|
|
||
| // This program 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 this program. If not, see <https://www.gnu.org/licenses/>. | ||
|
|
||
| use frame_support::{dispatch::DispatchResult, pallet_prelude::Member, traits::Get, Parameter, StorageMap}; | ||
| use parity_scale_codec::Codec; | ||
| use sp_runtime::DispatchError; | ||
| use sp_std::prelude::*; | ||
|
|
||
| use super::error::Error; | ||
| use super::ledger::{BondingLedger, UnlockChunk}; | ||
| use crate::Balance; | ||
|
|
||
| pub type BondingLedgerOf<T> = BondingLedger< | ||
| <T as BondingController>::Moment, | ||
| <T as BondingController>::MaxUnbondingChunks, | ||
| <T as BondingController>::MinBond, | ||
| >; | ||
|
|
||
| pub struct BondChange { | ||
| pub new: Balance, | ||
| pub old: Balance, | ||
| pub change: Balance, | ||
| } | ||
| pub trait BondingController | ||
| where | ||
| BondingLedgerOf<Self>: Codec + Default, | ||
| frame_support::BoundedVec< | ||
| UnlockChunk<<Self as BondingController>::Moment>, | ||
| <Self as BondingController>::MaxUnbondingChunks, | ||
| >: Codec, | ||
| { | ||
| type MinBond: Get<Balance>; | ||
| type MaxUnbondingChunks: Get<u32>; | ||
| type Moment: Ord + Eq + Copy; | ||
| type AccountId: Parameter + Member; | ||
|
|
||
| type Ledger: StorageMap<Self::AccountId, BondingLedgerOf<Self>, Query = Option<BondingLedgerOf<Self>>>; | ||
|
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||
| fn available_balance(who: &Self::AccountId, ledger: &BondingLedgerOf<Self>) -> Balance; | ||
| fn apply_ledger(who: &Self::AccountId, ledger: &BondingLedgerOf<Self>) -> DispatchResult; | ||
| fn convert_error(err: Error) -> DispatchError; | ||
|
|
||
| fn bond(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).unwrap_or_default(); | ||
|
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||
| let available = Self::available_balance(who, &ledger); | ||
| let bond_amount = amount.min(available); | ||
|
|
||
| if bond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
|
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| let old_active = ledger.active(); | ||
|
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| let ledger = ledger.bond(bond_amount).map_err(Self::convert_error)?; | ||
|
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
|
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: bond_amount, | ||
| })) | ||
| } | ||
|
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||
| fn unbond(who: &Self::AccountId, amount: Balance, at: Self::Moment) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
|
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||
| let (ledger, unbond_amount) = ledger.unbond(amount, at).map_err(Self::convert_error)?; | ||
|
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| if unbond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
|
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| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
|
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| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: unbond_amount, | ||
| })) | ||
| } | ||
|
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||
| fn unbond_instant(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
|
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| let (ledger, unbond_amount) = ledger.unbond_instant(amount).map_err(Self::convert_error)?; | ||
|
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||
| if unbond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
|
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||
| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
|
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||
| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: unbond_amount, | ||
| })) | ||
| } | ||
|
|
||
| fn rebond(who: &Self::AccountId, amount: Balance) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_active = ledger.active(); | ||
|
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||
| let (ledger, rebond_amount) = ledger.rebond(amount).map_err(Self::convert_error)?; | ||
|
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| if rebond_amount == 0 { | ||
| return Ok(None); | ||
| } | ||
|
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||
| Self::Ledger::insert(who, &ledger); | ||
| Self::apply_ledger(who, &ledger)?; | ||
|
|
||
| Ok(Some(BondChange { | ||
| old: old_active, | ||
| new: ledger.active(), | ||
| change: rebond_amount, | ||
| })) | ||
| } | ||
|
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||
| fn withdraw_unbonded(who: &Self::AccountId, now: Self::Moment) -> Result<Option<BondChange>, DispatchError> { | ||
| let ledger = Self::Ledger::get(who).ok_or_else(|| Self::convert_error(Error::NotBonded))?; | ||
| let old_total = ledger.total(); | ||
|
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| let ledger = ledger.consolidate_unlocked(now); | ||
|
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| let new_total = ledger.total(); | ||
|
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| let diff = old_total.saturating_sub(new_total); | ||
|
|
||
| if diff == 0 { | ||
| return Ok(None); | ||
| } | ||
|
|
||
| if new_total == 0 { | ||
| Self::Ledger::remove(who); | ||
| } else { | ||
| Self::Ledger::insert(who, &ledger); | ||
| } | ||
|
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||
| Self::apply_ledger(who, &ledger)?; | ||
|
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||
| Ok(Some(BondChange { | ||
| old: old_total, | ||
| new: new_total, | ||
| change: diff, | ||
| })) | ||
| } | ||
| } |
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