package keeper import ( "fmt" "math" "time" sdk "github.com/cosmos/cosmos-sdk/types" cdptypes "github.com/kava-labs/kava/x/cdp/types" hardtypes "github.com/kava-labs/kava/x/hard/types" "github.com/kava-labs/kava/x/incentive/types" ) // AccumulateUSDXMintingRewards updates the rewards accumulated for the input reward period func (k Keeper) AccumulateUSDXMintingRewards(ctx sdk.Context, rewardPeriod types.RewardPeriod) error { previousAccrualTime, found := k.GetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } timeElapsed := CalculateTimeElapsed(rewardPeriod, ctx.BlockTime(), previousAccrualTime) if timeElapsed.IsZero() { return nil } if rewardPeriod.RewardsPerSecond.Amount.IsZero() { k.SetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } totalPrincipal := k.cdpKeeper.GetTotalPrincipal(ctx, rewardPeriod.CollateralType, types.PrincipalDenom).ToDec() if totalPrincipal.IsZero() { k.SetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } newRewards := timeElapsed.Mul(rewardPeriod.RewardsPerSecond.Amount) cdpFactor, found := k.cdpKeeper.GetInterestFactor(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } rewardFactor := newRewards.ToDec().Mul(cdpFactor).Quo(totalPrincipal) previousRewardFactor, found := k.GetUSDXMintingRewardFactor(ctx, rewardPeriod.CollateralType) if !found { previousRewardFactor = sdk.ZeroDec() } newRewardFactor := previousRewardFactor.Add(rewardFactor) k.SetUSDXMintingRewardFactor(ctx, rewardPeriod.CollateralType, newRewardFactor) k.SetPreviousUSDXMintingAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } // AccumulateHardBorrowRewards updates the rewards accumulated for the input reward period func (k Keeper) AccumulateHardBorrowRewards(ctx sdk.Context, rewardPeriod types.RewardPeriod) error { previousAccrualTime, found := k.GetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } timeElapsed := CalculateTimeElapsed(rewardPeriod, ctx.BlockTime(), previousAccrualTime) if timeElapsed.IsZero() { return nil } if rewardPeriod.RewardsPerSecond.Amount.IsZero() { k.SetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } totalBorrowedCoins, foundTotalBorrowedCoins := k.hardKeeper.GetBorrowedCoins(ctx) if foundTotalBorrowedCoins { totalBorrowed := totalBorrowedCoins.AmountOf(rewardPeriod.CollateralType).ToDec() if totalBorrowed.IsZero() { k.SetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } newRewards := timeElapsed.Mul(rewardPeriod.RewardsPerSecond.Amount) hardFactor, found := k.hardKeeper.GetBorrowInterestFactor(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } rewardFactor := newRewards.ToDec().Mul(hardFactor).Quo(totalBorrowed) previousRewardFactor, found := k.GetHardBorrowRewardFactor(ctx, rewardPeriod.CollateralType) if !found { previousRewardFactor = sdk.ZeroDec() } newRewardFactor := previousRewardFactor.Add(rewardFactor) k.SetHardBorrowRewardFactor(ctx, rewardPeriod.CollateralType, newRewardFactor) } k.SetPreviousHardBorrowRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } // AccumulateHardSupplyRewards updates the rewards accumulated for the input reward period func (k Keeper) AccumulateHardSupplyRewards(ctx sdk.Context, rewardPeriod types.RewardPeriod) error { previousAccrualTime, found := k.GetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } timeElapsed := CalculateTimeElapsed(rewardPeriod, ctx.BlockTime(), previousAccrualTime) if timeElapsed.IsZero() { return nil } if rewardPeriod.RewardsPerSecond.Amount.IsZero() { k.SetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } totalSuppliedCoins, foundTotalSuppliedCoins := k.hardKeeper.GetSuppliedCoins(ctx) if foundTotalSuppliedCoins { totalSupplied := totalSuppliedCoins.AmountOf(rewardPeriod.CollateralType).ToDec() if totalSupplied.IsZero() { k.SetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } newRewards := timeElapsed.Mul(rewardPeriod.RewardsPerSecond.Amount) hardFactor, found := k.hardKeeper.GetSupplyInterestFactor(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } rewardFactor := newRewards.ToDec().Mul(hardFactor).Quo(totalSupplied) previousRewardFactor, found := k.GetHardSupplyRewardFactor(ctx, rewardPeriod.CollateralType) if !found { previousRewardFactor = sdk.ZeroDec() } newRewardFactor := previousRewardFactor.Add(rewardFactor) k.SetHardSupplyRewardFactor(ctx, rewardPeriod.CollateralType, newRewardFactor) } k.SetPreviousHardSupplyRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } // InitializeUSDXMintingClaim creates or updates a claim such that no new rewards are accrued, but any existing rewards are not lost. // this function should be called after a cdp is created. If a user previously had a cdp, then closed it, they shouldn't // accrue rewards during the period the cdp was closed. By setting the reward factor to the current global reward factor, // any unclaimed rewards are preserved, but no new rewards are added. func (k Keeper) InitializeUSDXMintingClaim(ctx sdk.Context, cdp cdptypes.CDP) { _, found := k.GetUSDXMintingRewardPeriod(ctx, cdp.Type) if !found { // this collateral type is not incentivized, do nothing return } rewardFactor, found := k.GetUSDXMintingRewardFactor(ctx, cdp.Type) if !found { rewardFactor = sdk.ZeroDec() } claim, found := k.GetUSDXMintingClaim(ctx, cdp.Owner) if !found { // this is the owner's first usdx minting reward claim claim = types.NewUSDXMintingClaim(cdp.Owner, sdk.NewCoin(types.USDXMintingRewardDenom, sdk.ZeroInt()), types.RewardIndexes{types.NewRewardIndex(cdp.Type, rewardFactor)}) k.SetUSDXMintingClaim(ctx, claim) return } // the owner has an existing usdx minting reward claim index, hasRewardIndex := claim.HasRewardIndex(cdp.Type) if !hasRewardIndex { // this is the owner's first usdx minting reward for this collateral type claim.RewardIndexes = append(claim.RewardIndexes, types.NewRewardIndex(cdp.Type, rewardFactor)) } else { // the owner has a previous usdx minting reward for this collateral type claim.RewardIndexes[index] = types.NewRewardIndex(cdp.Type, rewardFactor) } k.SetUSDXMintingClaim(ctx, claim) } // SynchronizeUSDXMintingReward updates the claim object by adding any accumulated rewards and updating the reward index value. // this should be called before a cdp is modified, immediately after the 'SynchronizeInterest' method is called in the cdp module func (k Keeper) SynchronizeUSDXMintingReward(ctx sdk.Context, cdp cdptypes.CDP) { _, found := k.GetUSDXMintingRewardPeriod(ctx, cdp.Type) if !found { // this collateral type is not incentivized, do nothing return } globalRewardFactor, found := k.GetUSDXMintingRewardFactor(ctx, cdp.Type) if !found { globalRewardFactor = sdk.ZeroDec() } claim, found := k.GetUSDXMintingClaim(ctx, cdp.Owner) if !found { claim = types.NewUSDXMintingClaim(cdp.Owner, sdk.NewCoin(types.USDXMintingRewardDenom, sdk.ZeroInt()), types.RewardIndexes{types.NewRewardIndex(cdp.Type, globalRewardFactor)}) k.SetUSDXMintingClaim(ctx, claim) return } // the owner has an existing usdx minting reward claim index, hasRewardIndex := claim.HasRewardIndex(cdp.Type) if !hasRewardIndex { // this is the owner's first usdx minting reward for this collateral type claim.RewardIndexes = append(claim.RewardIndexes, types.NewRewardIndex(cdp.Type, globalRewardFactor)) k.SetUSDXMintingClaim(ctx, claim) return } userRewardFactor := claim.RewardIndexes[index].RewardFactor rewardsAccumulatedFactor := globalRewardFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { return } claim.RewardIndexes[index].RewardFactor = globalRewardFactor newRewardsAmount := rewardsAccumulatedFactor.Mul(cdp.GetTotalPrincipal().Amount.ToDec()).RoundInt() if newRewardsAmount.IsZero() { k.SetUSDXMintingClaim(ctx, claim) return } newRewardsCoin := sdk.NewCoin(types.USDXMintingRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) k.SetUSDXMintingClaim(ctx, claim) return } // InitializeHardSupplyReward initializes the supply-side of a hard liquidity provider claim // by creating the claim and setting the supply reward factor index func (k Keeper) InitializeHardSupplyReward(ctx sdk.Context, deposit hardtypes.Deposit) { var supplyRewardIndexes types.RewardIndexes for _, coin := range deposit.Amount { _, rpFound := k.GetHardSupplyRewardPeriod(ctx, coin.Denom) if !rpFound { continue } supplyFactor, foundSupplyFactor := k.GetHardSupplyRewardFactor(ctx, coin.Denom) if !foundSupplyFactor { supplyFactor = sdk.ZeroDec() } supplyRewardIndexes = append(supplyRewardIndexes, types.NewRewardIndex(coin.Denom, supplyFactor)) } claim, found := k.GetHardLiquidityProviderClaim(ctx, deposit.Depositor) if found { // Reset borrow reward indexes claim.BorrowRewardIndexes = types.RewardIndexes{} } else { // Instantiate claim object claim = types.NewHardLiquidityProviderClaim(deposit.Depositor, sdk.NewCoin(types.HardLiquidityRewardDenom, sdk.ZeroInt()), nil, nil, nil) } claim.SupplyRewardIndexes = supplyRewardIndexes k.SetHardLiquidityProviderClaim(ctx, claim) } // SynchronizeHardSupplyReward updates the claim object by adding any accumulated rewards // and updating the reward index value func (k Keeper) SynchronizeHardSupplyReward(ctx sdk.Context, deposit hardtypes.Deposit) { claim, found := k.GetHardLiquidityProviderClaim(ctx, deposit.Depositor) if !found { return } for _, coin := range deposit.Amount { supplyFactor, found := k.GetHardSupplyRewardFactor(ctx, coin.Denom) if !found { fmt.Printf("\n[LOG]: %s does not have a supply factor", coin.Denom) // TODO: remove before production continue } supplyIndex, hasSupplyRewardIndex := claim.HasSupplyRewardIndex(coin.Denom) if !hasSupplyRewardIndex { continue } userRewardFactor := claim.SupplyRewardIndexes[supplyIndex].RewardFactor rewardsAccumulatedFactor := supplyFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { continue } claim.SupplyRewardIndexes[supplyIndex].RewardFactor = supplyFactor newRewardsAmount := rewardsAccumulatedFactor.Mul(deposit.Amount.AmountOf(coin.Denom).ToDec()).RoundInt() if newRewardsAmount.IsZero() || newRewardsAmount.IsNegative() { continue } newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) } k.SetHardLiquidityProviderClaim(ctx, claim) } // InitializeHardBorrowReward initializes the borrow-side of a hard liquidity provider claim // by creating the claim and setting the borrow reward factor index func (k Keeper) InitializeHardBorrowReward(ctx sdk.Context, borrow hardtypes.Borrow) { claim, found := k.GetHardLiquidityProviderClaim(ctx, borrow.Borrower) if !found { claim = types.NewHardLiquidityProviderClaim(borrow.Borrower, sdk.NewCoin(types.HardLiquidityRewardDenom, sdk.ZeroInt()), nil, nil, nil) } var borrowRewardIndexes types.RewardIndexes for _, coin := range borrow.Amount { _, rpFound := k.GetHardBorrowRewardPeriod(ctx, coin.Denom) if !rpFound { continue } borrowFactor, foundBorrowFactor := k.GetHardBorrowRewardFactor(ctx, coin.Denom) if !foundBorrowFactor { borrowFactor = sdk.ZeroDec() } borrowRewardIndexes = append(borrowRewardIndexes, types.NewRewardIndex(coin.Denom, borrowFactor)) } claim.BorrowRewardIndexes = borrowRewardIndexes k.SetHardLiquidityProviderClaim(ctx, claim) } // SynchronizeHardBorrowReward updates the claim object by adding any accumulated rewards // and updating the reward index value func (k Keeper) SynchronizeHardBorrowReward(ctx sdk.Context, borrow hardtypes.Borrow) { claim, found := k.GetHardLiquidityProviderClaim(ctx, borrow.Borrower) if !found { return } for _, coin := range borrow.Amount { borrowFactor, found := k.GetHardBorrowRewardFactor(ctx, coin.Denom) if !found { continue } borrowIndex, BorrowRewardIndex := claim.HasBorrowRewardIndex(coin.Denom) if !BorrowRewardIndex { continue } userRewardFactor := claim.BorrowRewardIndexes[borrowIndex].RewardFactor rewardsAccumulatedFactor := borrowFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { continue } claim.BorrowRewardIndexes[borrowIndex].RewardFactor = borrowFactor newRewardsAmount := rewardsAccumulatedFactor.Mul(borrow.Amount.AmountOf(coin.Denom).ToDec()).RoundInt() if newRewardsAmount.IsZero() || newRewardsAmount.IsNegative() { continue } newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) } k.SetHardLiquidityProviderClaim(ctx, claim) } // UpdateHardSupplyIndexDenoms adds any new deposit denoms to the claim's supply reward index func (k Keeper) UpdateHardSupplyIndexDenoms(ctx sdk.Context, deposit hardtypes.Deposit) { claim, found := k.GetHardLiquidityProviderClaim(ctx, deposit.Depositor) if !found { claim = types.NewHardLiquidityProviderClaim(deposit.Depositor, sdk.NewCoin(types.HardLiquidityRewardDenom, sdk.ZeroInt()), nil, nil, nil) } supplyRewardIndexes := claim.SupplyRewardIndexes for _, coin := range deposit.Amount { _, hasIndex := claim.HasSupplyRewardIndex(coin.Denom) if !hasIndex { supplyFactor, foundSupplyFactor := k.GetHardSupplyRewardFactor(ctx, coin.Denom) if foundSupplyFactor { supplyRewardIndexes = append(supplyRewardIndexes, types.NewRewardIndex(coin.Denom, supplyFactor)) } } } if len(supplyRewardIndexes) == 0 { return } claim.SupplyRewardIndexes = supplyRewardIndexes k.SetHardLiquidityProviderClaim(ctx, claim) } // UpdateHardBorrowIndexDenoms adds any new borrow denoms to the claim's supply reward index func (k Keeper) UpdateHardBorrowIndexDenoms(ctx sdk.Context, borrow hardtypes.Borrow) { claim, found := k.GetHardLiquidityProviderClaim(ctx, borrow.Borrower) if !found { claim = types.NewHardLiquidityProviderClaim(borrow.Borrower, sdk.NewCoin(types.HardLiquidityRewardDenom, sdk.ZeroInt()), nil, nil, nil) } borrowRewardIndexes := claim.BorrowRewardIndexes for _, coin := range borrow.Amount { _, hasIndex := claim.HasBorrowRewardIndex(coin.Denom) if !hasIndex { borrowFactor, foundBorrowFactor := k.GetHardBorrowRewardFactor(ctx, coin.Denom) if foundBorrowFactor { borrowRewardIndexes = append(borrowRewardIndexes, types.NewRewardIndex(coin.Denom, borrowFactor)) } } } if len(borrowRewardIndexes) == 0 { return } claim.BorrowRewardIndexes = borrowRewardIndexes k.SetHardLiquidityProviderClaim(ctx, claim) } // SynchronizeHardDelegatorRewards updates the claim object by adding any accumulated rewards func (k Keeper) SynchronizeHardDelegatorRewards(ctx sdk.Context, delegator sdk.AccAddress) { claim, found := k.GetHardLiquidityProviderClaim(ctx, delegator) if !found { return } delagatorFactor, found := k.GetHardDelegatorRewardFactor(ctx, types.BondDenom) if !found { return } delegatorIndex, hasDelegatorRewardIndex := claim.HasDelegatorRewardIndex(types.BondDenom) if !hasDelegatorRewardIndex { return } userRewardFactor := claim.DelegatorRewardIndexes[delegatorIndex].RewardFactor rewardsAccumulatedFactor := delagatorFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { return } claim.DelegatorRewardIndexes[delegatorIndex].RewardFactor = delagatorFactor totalDelegated := sdk.ZeroDec() // TODO: set reasonable max limit on delegation iteration maxUInt := ^uint16(0) delegations := k.stakingKeeper.GetDelegatorDelegations(ctx, delegator, maxUInt) for _, delegation := range delegations { validator, found := k.stakingKeeper.GetValidator(ctx, delegation.GetValidatorAddr()) if !found { continue } // Delegators don't accumulate rewards if their validator is unbonded/slashed if validator.GetStatus() != sdk.Bonded { continue } if validator.GetTokens().IsZero() { continue } delegatedTokens := validator.TokensFromShares(delegation.GetShares()) if delegatedTokens.IsZero() || delegatedTokens.IsNegative() { continue } totalDelegated = totalDelegated.Add(delegatedTokens) } rewardsEarned := rewardsAccumulatedFactor.Mul(totalDelegated).RoundInt() if rewardsEarned.IsZero() || rewardsEarned.IsNegative() { return } // Add rewards to delegator's hard claim newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, rewardsEarned) claim.Reward = claim.Reward.Add(newRewardsCoin) k.SetHardLiquidityProviderClaim(ctx, claim) } // AccumulateHardDelegatorRewards updates the rewards accumulated for the input reward period func (k Keeper) AccumulateHardDelegatorRewards(ctx sdk.Context, rewardPeriod types.RewardPeriod) error { previousAccrualTime, found := k.GetPreviousHardDelegatorRewardAccrualTime(ctx, rewardPeriod.CollateralType) if !found { k.SetPreviousHardDelegatorRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } timeElapsed := CalculateTimeElapsed(rewardPeriod, ctx.BlockTime(), previousAccrualTime) if timeElapsed.IsZero() { return nil } if rewardPeriod.RewardsPerSecond.Amount.IsZero() { k.SetPreviousHardDelegatorRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } totalBonded := k.stakingKeeper.TotalBondedTokens(ctx).ToDec() if totalBonded.IsZero() { k.SetPreviousHardDelegatorRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } newRewards := timeElapsed.Mul(rewardPeriod.RewardsPerSecond.Amount) rewardFactor := newRewards.ToDec().Quo(totalBonded) previousRewardFactor, found := k.GetHardDelegatorRewardFactor(ctx, rewardPeriod.CollateralType) if !found { previousRewardFactor = sdk.ZeroDec() } newRewardFactor := previousRewardFactor.Add(rewardFactor) k.SetHardDelegatorRewardFactor(ctx, rewardPeriod.CollateralType, newRewardFactor) k.SetPreviousHardDelegatorRewardAccrualTime(ctx, rewardPeriod.CollateralType, ctx.BlockTime()) return nil } // InitializeHardDelegatorReward initializes the delegator reward index of a hard claim func (k Keeper) InitializeHardDelegatorReward(ctx sdk.Context, delegator sdk.AccAddress) { delegatorFactor, foundDelegatorFactor := k.GetHardDelegatorRewardFactor(ctx, types.BondDenom) if !foundDelegatorFactor { // Should always be found... delegatorFactor = sdk.ZeroDec() } delegatorRewardIndexes := types.NewRewardIndex(types.BondDenom, delegatorFactor) claim, found := k.GetHardLiquidityProviderClaim(ctx, delegator) if !found { // Instantiate claim object claim = types.NewHardLiquidityProviderClaim(delegator, sdk.NewCoin(types.HardLiquidityRewardDenom, sdk.ZeroInt()), nil, nil, nil) } claim.DelegatorRewardIndexes = types.RewardIndexes{delegatorRewardIndexes} k.SetHardLiquidityProviderClaim(ctx, claim) } // ZeroUSDXMintingClaim zeroes out the claim object's rewards and returns the updated claim object func (k Keeper) ZeroUSDXMintingClaim(ctx sdk.Context, claim types.USDXMintingClaim) types.USDXMintingClaim { claim.Reward = sdk.NewCoin(claim.Reward.Denom, sdk.ZeroInt()) k.SetUSDXMintingClaim(ctx, claim) return claim } // SynchronizeUSDXMintingClaim updates the claim object by adding any rewards that have accumulated. // Returns the updated claim object func (k Keeper) SynchronizeUSDXMintingClaim(ctx sdk.Context, claim types.USDXMintingClaim) (types.USDXMintingClaim, error) { for _, ri := range claim.RewardIndexes { cdp, found := k.cdpKeeper.GetCdpByOwnerAndCollateralType(ctx, claim.Owner, ri.CollateralType) if !found { // if the cdp for this collateral type has been closed, no updates are needed continue } claim = k.synchronizeRewardAndReturnClaim(ctx, cdp) } return claim, nil } // this function assumes a claim already exists, so don't call it if that's not the case func (k Keeper) synchronizeRewardAndReturnClaim(ctx sdk.Context, cdp cdptypes.CDP) types.USDXMintingClaim { k.SynchronizeUSDXMintingReward(ctx, cdp) claim, _ := k.GetUSDXMintingClaim(ctx, cdp.Owner) return claim } // SynchronizeHardLiquidityProviderClaim adds any accumulated rewards func (k Keeper) SynchronizeHardLiquidityProviderClaim(ctx sdk.Context, owner sdk.AccAddress) { // Synchronize any hard liquidity supply-side rewards deposit, foundDeposit := k.hardKeeper.GetDeposit(ctx, owner) if foundDeposit { k.SynchronizeHardSupplyReward(ctx, deposit) } // Synchronize any hard liquidity borrow-side rewards borrow, foundBorrow := k.hardKeeper.GetBorrow(ctx, owner) if foundBorrow { k.SynchronizeHardBorrowReward(ctx, borrow) } // Synchronize any hard delegator rewards k.SynchronizeHardDelegatorRewards(ctx, owner) } // ZeroHardLiquidityProviderClaim zeroes out the claim object's rewards and returns the updated claim object func (k Keeper) ZeroHardLiquidityProviderClaim(ctx sdk.Context, claim types.HardLiquidityProviderClaim) types.HardLiquidityProviderClaim { claim.Reward = sdk.NewCoin(claim.Reward.Denom, sdk.ZeroInt()) k.SetHardLiquidityProviderClaim(ctx, claim) return claim } // CalculateTimeElapsed calculates the number of reward-eligible seconds that have passed since the previous // time rewards were accrued, taking into account the end time of the reward period func CalculateTimeElapsed(rewardPeriod types.RewardPeriod, blockTime time.Time, previousAccrualTime time.Time) sdk.Int { if rewardPeriod.End.Before(blockTime) && (rewardPeriod.End.Before(previousAccrualTime) || rewardPeriod.End.Equal(previousAccrualTime)) { return sdk.ZeroInt() } if rewardPeriod.End.Before(blockTime) { return sdk.NewInt(int64(math.RoundToEven( rewardPeriod.End.Sub(previousAccrualTime).Seconds(), ))) } return sdk.NewInt(int64(math.RoundToEven( blockTime.Sub(previousAccrualTime).Seconds(), ))) } // SimulateHardSynchronization calculates a user's outstanding hard rewards by simulating reward synchronization func (k Keeper) SimulateHardSynchronization(ctx sdk.Context, claim types.HardLiquidityProviderClaim) types.HardLiquidityProviderClaim { // 1. Simulate Hard supply-side rewards for _, ri := range claim.SupplyRewardIndexes { supplyFactor, found := k.GetHardSupplyRewardFactor(ctx, ri.CollateralType) if !found { continue } supplyIndex, hasSupplyRewardIndex := claim.HasSupplyRewardIndex(ri.CollateralType) if !hasSupplyRewardIndex { continue } claim.SupplyRewardIndexes[supplyIndex].RewardFactor = supplyFactor rewardsAccumulatedFactor := supplyFactor.Sub(ri.RewardFactor) if rewardsAccumulatedFactor.IsZero() { continue } deposit, found := k.hardKeeper.GetDeposit(ctx, claim.GetOwner()) if !found { continue } var newRewardsAmount sdk.Int if deposit.Amount.AmountOf(ri.CollateralType).GT(sdk.ZeroInt()) { newRewardsAmount = rewardsAccumulatedFactor.Mul(deposit.Amount.AmountOf(ri.CollateralType).ToDec()).RoundInt() if newRewardsAmount.IsZero() || newRewardsAmount.IsNegative() { continue } } newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) } // 2. Simulate Hard borrow-side rewards for _, ri := range claim.BorrowRewardIndexes { borrowFactor, found := k.GetHardBorrowRewardFactor(ctx, ri.CollateralType) if !found { continue } borrowIndex, hasBorrowRewardIndex := claim.HasBorrowRewardIndex(ri.CollateralType) if !hasBorrowRewardIndex { continue } claim.BorrowRewardIndexes[borrowIndex].RewardFactor = borrowFactor rewardsAccumulatedFactor := borrowFactor.Sub(ri.RewardFactor) if rewardsAccumulatedFactor.IsZero() { continue } borrow, found := k.hardKeeper.GetBorrow(ctx, claim.GetOwner()) if !found { continue } var newRewardsAmount sdk.Int if borrow.Amount.AmountOf(ri.CollateralType).GT(sdk.ZeroInt()) { newRewardsAmount = rewardsAccumulatedFactor.Mul(borrow.Amount.AmountOf(ri.CollateralType).ToDec()).RoundInt() if newRewardsAmount.IsZero() || newRewardsAmount.IsNegative() { continue } } newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) } // 3. Simulate Hard delegator rewards delagatorFactor, found := k.GetHardDelegatorRewardFactor(ctx, types.BondDenom) if !found { return claim } delegatorIndex, hasDelegatorRewardIndex := claim.HasDelegatorRewardIndex(types.BondDenom) if !hasDelegatorRewardIndex { return claim } userRewardFactor := claim.DelegatorRewardIndexes[delegatorIndex].RewardFactor rewardsAccumulatedFactor := delagatorFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { return claim } claim.DelegatorRewardIndexes[delegatorIndex].RewardFactor = delagatorFactor totalDelegated := sdk.ZeroDec() // TODO: set reasonable max limit on delegation iteration maxUInt := ^uint16(0) delegations := k.stakingKeeper.GetDelegatorDelegations(ctx, claim.GetOwner(), maxUInt) for _, delegation := range delegations { validator, found := k.stakingKeeper.GetValidator(ctx, delegation.GetValidatorAddr()) if !found { continue } // Delegators don't accumulate rewards if their validator is unbonded/slashed if validator.GetStatus() != sdk.Bonded { continue } if validator.GetTokens().IsZero() { continue } delegatedTokens := validator.TokensFromShares(delegation.GetShares()) if delegatedTokens.IsZero() || delegatedTokens.IsNegative() { continue } totalDelegated = totalDelegated.Add(delegatedTokens) } rewardsEarned := rewardsAccumulatedFactor.Mul(totalDelegated).RoundInt() if rewardsEarned.IsZero() || rewardsEarned.IsNegative() { return claim } // Add rewards to delegator's hard claim newRewardsCoin := sdk.NewCoin(types.HardLiquidityRewardDenom, rewardsEarned) claim.Reward = claim.Reward.Add(newRewardsCoin) return claim } // SimulateUSDXMintingSynchronization calculates a user's outstanding USDX minting rewards by simulating reward synchronization func (k Keeper) SimulateUSDXMintingSynchronization(ctx sdk.Context, claim types.USDXMintingClaim) types.USDXMintingClaim { for _, ri := range claim.RewardIndexes { _, found := k.GetUSDXMintingRewardPeriod(ctx, ri.CollateralType) if !found { continue } globalRewardFactor, found := k.GetUSDXMintingRewardFactor(ctx, ri.CollateralType) if !found { globalRewardFactor = sdk.ZeroDec() } // the owner has an existing usdx minting reward claim index, hasRewardIndex := claim.HasRewardIndex(ri.CollateralType) if !hasRewardIndex { // this is the owner's first usdx minting reward for this collateral type claim.RewardIndexes = append(claim.RewardIndexes, types.NewRewardIndex(ri.CollateralType, globalRewardFactor)) } userRewardFactor := claim.RewardIndexes[index].RewardFactor rewardsAccumulatedFactor := globalRewardFactor.Sub(userRewardFactor) if rewardsAccumulatedFactor.IsZero() { continue } claim.RewardIndexes[index].RewardFactor = globalRewardFactor cdp, found := k.cdpKeeper.GetCdpByOwnerAndCollateralType(ctx, claim.GetOwner(), ri.CollateralType) if !found { continue } newRewardsAmount := rewardsAccumulatedFactor.Mul(cdp.GetTotalPrincipal().Amount.ToDec()).RoundInt() if newRewardsAmount.IsZero() { continue } newRewardsCoin := sdk.NewCoin(types.USDXMintingRewardDenom, newRewardsAmount) claim.Reward = claim.Reward.Add(newRewardsCoin) } return claim }