0g-chain/x/hard/keeper/repay.go
drklee3 f757d7ab15
feat: upgrade to Cosmos v0.46 (#1477)
* Update cosmos-sdk to v0.45.10-kava

* Add RegisterNodeService to app

* Update cosmos proto files

* Update cosmos proto files

* Use tagged v0.45.10-kava-v0.19-0.21 cosmos version

* update x/auth/legacy to x/auth/migrations

* Delete rest packages and registration

* Remove rest from proposal handlers

* Remove legacy types referencing removed sdk types

* Remove legacy tx broadcast handler

* Update incentive staking hooks to return error

* Remove grpc replace directive, use new grpc version

* Fix storetypes import

* Update tally_handler with updated gov types

* Delete legacy types

* Use new gov default config

* Update RegisterTendermintService params

Signed-off-by: drklee3 <derrick@dlee.dev>

* Replace sdk.StoreKey with storetypes.StoreKey

* Replace sdk.Int#ToDec with sdk.NewDecFromInt

* Replace sdk.NewUintFromBigInt with sdkmath.NewUintFromBigInt

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update most intances of govtypes to govv1beta1

* Unpack coin slice for Coins#Sub and Coins#SafeSub

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update committee gov codec registration

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update migrate utils period_vesting Coins#Sub

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update Coin#Sub in community proposal handler

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update Coin#Sub, FundModuleAccount/FundAccount in banktestutil

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update community, earn, kavadist proposal gov registration

* Update evm cli client EthSecp256k1Type check

* AccAddressFromHex to AccAddressFromHexUnsafe

* Add mint DefaultInflationCalculationFn to earn test

* Update use of removed staking.NewHandler

* Rename FlagIAVLFastNode -> FlagDisableIAVLFastNode

* cmd: Update new snapshot app option

Signed-off-by: drklee3 <derrick@dlee.dev>

* cmd: Add tendermint default config, use cosmos rpc status command

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update ethermint import path

github.com/tharsis/ethermint -> github.com/evmos/ethermint

* Upgrade ibc-go to v6

* Update proto dependencies

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update Tally handler test with new gov types

* Update helpers.GenTx -> helpers.GenSignedMockTx

* Update evmkeeper.NewKeeper params

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update ante authz, tests

* Add feemarket transient key, pass subspaces to evm/feemarket keepers

* Update new ante decorators

* Add new addModuleInitFlags to server commands

* Pass codec to keyring.New in genaccounts

* Pass codec to client keys add

* Add SendCoins to evmutil bank_keeper

* Use github.com/cosmos/iavl@v0.19.5

* Add ante HandlerOptions

* Add unimplemented SendCoins to evmutil bank keeper

Ethermint x/evm does not use this method

* Update init-new-chain script to disable post-london blocks

* Modify test genesis states to append 1 validator

* Update tally handler test to use string values

* Prevent querying balance for empty sdk.AccAddress in auction bidding test

* Set default bond denom to ukava

* Remove overwritten bank genesis total supply in committee proposal test

Signed-off-by: drklee3 <derrick@dlee.dev>

* Use ukava for testing staked balance

* Disable minting in community proposal handler test

Previously stake denom is used, which resulted in 0 minted coins

* Update hard APYToSPY test expected value

Increased iterations in sdk.ApproxRoot, updated closer to real value

* Fix NewDecCoinsFromCoins bug in incentive collectDerivativeStakingRewards

* Allow bkava earn incentive test values to match within small margin for rounding

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update invalid denom in issuance message coin validation

Colons are now valid in denoms

Signed-off-by: drklee3 <derrick@dlee.dev>

* Remove genesis validator in incentive delegation tests

* Update pricefeed market test for invalid denom

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update incentive delegator rewards test without genesis validator

Signed-off-by: drklee3 <derrick@dlee.dev>

* Add validator to export test

* Clear bank state in minting tests

Signed-off-by: drklee3 <derrick@dlee.dev>

* Remove validator for no stake tally test

Signed-off-by: drklee3 <derrick@dlee.dev>

* Clear incentive state before InitGenesis in incentive genesis export test

* Update swagger

Signed-off-by: drklee3 <derrick@dlee.dev>

* Update ethermint version to match replaced version

* Remove legacy swagger

* Add NewEthEmitEventDecorator

* Remove redundant func for AddModuleInitFlags

* Remove unused addBankBalanceForAddress func

* Add SetIAVLLazyLoading option to app cmd

* Use legacy.RegisterAminoMsg for committee msg concrete registration

* Remove unnecessary Amino field

* Add evm_util bankkeeper SendCoins comment

* Update test method ResetBankState to DeleteGenesisValidatorCoins to be more clear

* Validate incentive params.RewardsPerSecond to be non-zero

* Validate swap pools to disallow colons in token denoms

* Register all legacy amino types on gov modulecdc

* Remove redundant Comittee interface registration

* Pin goleveldb to v1.0.1-0.20210819022825-2ae1ddf74ef7

Causes failed to load state at height errors

* Update ethermint to new pinned version with minGasPrices parse error fix

* Update cosmos fork dependcy commit to include reverted account constructor patch

* Update Cosmos v0.46.11 and cometbft v0.34.27

* Bump minimum go version to 1.19

* Update tendermint proto

* Update internal testnet genesis

* Move NewCanTransferDecorator before NewEthGasConsumeDecorator

* Add hard borrow store tests (#1514)

* add store tests for Borrow type

* refactor Deposit tests to match

* Fix old bep3 tests (#1515)

* Update Ethermint to 1b17445 to fix duplicate proto registration

* Add custom status command to use snake_case and stdout

* Add SetInflation helper

* Reduce ambiguity with evm CanSignEthTx error

* Remove init genesis validator claim in test

* Add disabled evmante.NewMinGasPriceDecorator with x/feemarket note

* chore: use tagged versions for Cosmos and Ethermint forks

* update kvtool & increase wait for ibc transfer test

---------

Signed-off-by: drklee3 <derrick@dlee.dev>
Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com>
Co-authored-by: Robert Pirtle <astropirtle@gmail.com>
2023-04-03 20:08:45 -04:00

171 lines
6.0 KiB
Go

package keeper
import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/kava-labs/kava/x/hard/types"
)
// Repay borrowed funds
func (k Keeper) Repay(ctx sdk.Context, sender, owner sdk.AccAddress, coins sdk.Coins) error {
// Check borrow exists here to avoid duplicating store read in ValidateRepay
borrow, found := k.GetBorrow(ctx, owner)
if !found {
return types.ErrBorrowNotFound
}
// Call incentive hook
k.BeforeBorrowModified(ctx, borrow)
// Sync borrow interest so loan is up-to-date
k.SyncBorrowInterest(ctx, owner)
// Refresh borrow after syncing interest
borrow, _ = k.GetBorrow(ctx, owner)
// cap the repayment by what's available to repay (the borrow amount)
payment, err := k.CalculatePaymentAmount(borrow.Amount, coins)
if err != nil {
return err
}
// Validate that sender holds coins for repayment
err = k.ValidateRepay(ctx, sender, owner, payment)
if err != nil {
return err
}
// Sends coins from user to Hard module account
err = k.bankKeeper.SendCoinsFromAccountToModule(ctx, sender, types.ModuleAccountName, payment)
if err != nil {
return err
}
// If any coin denoms have been completely repaid reset the denom's borrow index factor
for _, coin := range payment {
if coin.Amount.Equal(borrow.Amount.AmountOf(coin.Denom)) {
borrowIndex, removed := borrow.Index.RemoveInterestFactor(coin.Denom)
if !removed {
return sdkerrors.Wrapf(types.ErrInvalidIndexFactorDenom, "%s", coin.Denom)
}
borrow.Index = borrowIndex
}
}
// Update user's borrow in store
borrow.Amount = borrow.Amount.Sub(payment...)
if borrow.Amount.Empty() {
k.DeleteBorrow(ctx, borrow)
} else {
k.SetBorrow(ctx, borrow)
}
// Update total borrowed amount
err = k.DecrementBorrowedCoins(ctx, payment)
if err != nil {
return err
}
// Call incentive hook
k.AfterBorrowModified(ctx, borrow)
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeHardRepay,
sdk.NewAttribute(types.AttributeKeySender, sender.String()),
sdk.NewAttribute(types.AttributeKeyOwner, owner.String()),
sdk.NewAttribute(types.AttributeKeyRepayCoins, payment.String()),
),
)
return nil
}
// ValidateRepay validates a requested loan repay
func (k Keeper) ValidateRepay(ctx sdk.Context, sender, owner sdk.AccAddress, coins sdk.Coins) error {
assetPriceCache := map[string]sdk.Dec{}
// Get the total USD value of user's existing borrows
existingBorrowUSDValue := sdk.ZeroDec()
existingBorrow, found := k.GetBorrow(ctx, owner)
if found {
for _, coin := range existingBorrow.Amount {
moneyMarket, found := k.GetMoneyMarket(ctx, coin.Denom)
if !found {
return sdkerrors.Wrapf(types.ErrMarketNotFound, "no money market found for denom %s", coin.Denom)
}
assetPrice, ok := assetPriceCache[coin.Denom]
if !ok { // Fetch current asset price and store in local cache
assetPriceInfo, err := k.pricefeedKeeper.GetCurrentPrice(ctx, moneyMarket.SpotMarketID)
if err != nil {
return sdkerrors.Wrapf(types.ErrPriceNotFound, "no price found for market %s", moneyMarket.SpotMarketID)
}
assetPriceCache[coin.Denom] = assetPriceInfo.Price
assetPrice = assetPriceInfo.Price
}
// Calculate this borrow coin's USD value and add it to the total previous borrowed USD value
coinUSDValue := sdk.NewDecFromInt(coin.Amount).Quo(sdk.NewDecFromInt(moneyMarket.ConversionFactor)).Mul(assetPrice)
existingBorrowUSDValue = existingBorrowUSDValue.Add(coinUSDValue)
}
}
senderCoins := k.bankKeeper.SpendableCoins(ctx, sender)
repayTotalUSDValue := sdk.ZeroDec()
for _, repayCoin := range coins {
// Check that sender holds enough tokens to make the proposed payment
if senderCoins.AmountOf(repayCoin.Denom).LT(repayCoin.Amount) {
return sdkerrors.Wrapf(types.ErrInsufficientBalanceForRepay, "account can only repay up to %s%s", senderCoins.AmountOf(repayCoin.Denom), repayCoin.Denom)
}
moneyMarket, found := k.GetMoneyMarket(ctx, repayCoin.Denom)
if !found {
return sdkerrors.Wrapf(types.ErrMarketNotFound, "no money market found for denom %s", repayCoin.Denom)
}
// Calculate this coin's USD value and add it to the repay's total USD value
assetPrice, ok := assetPriceCache[repayCoin.Denom]
if !ok { // Fetch current asset price and store in local cache
assetPriceInfo, err := k.pricefeedKeeper.GetCurrentPrice(ctx, moneyMarket.SpotMarketID)
if err != nil {
return sdkerrors.Wrapf(types.ErrPriceNotFound, "no price found for market %s", moneyMarket.SpotMarketID)
}
assetPriceCache[repayCoin.Denom] = assetPriceInfo.Price
assetPrice = assetPriceInfo.Price
}
coinUSDValue := sdk.NewDecFromInt(repayCoin.Amount).Quo(sdk.NewDecFromInt(moneyMarket.ConversionFactor)).Mul(assetPrice)
repayTotalUSDValue = repayTotalUSDValue.Add(coinUSDValue)
}
// If the proposed repayment would results in a borrowed USD value below the minimum borrow USD value, reject it.
// User can overpay their loan to close it out, but underpaying by such a margin that the USD value is in an
// invalid range is not allowed
// Unless the user is fully repaying their loan
proposedBorrowNewUSDValue := existingBorrowUSDValue.Sub(repayTotalUSDValue)
isFullRepayment := coins.IsEqual(existingBorrow.Amount)
if proposedBorrowNewUSDValue.LT(k.GetMinimumBorrowUSDValue(ctx)) && !isFullRepayment {
return sdkerrors.Wrapf(types.ErrBelowMinimumBorrowValue, "the proposed borrow's USD value $%s is below the minimum borrow limit $%s", proposedBorrowNewUSDValue, k.GetMinimumBorrowUSDValue(ctx))
}
return nil
}
// CalculatePaymentAmount prevents overpayment when repaying borrowed coins
func (k Keeper) CalculatePaymentAmount(owed sdk.Coins, payment sdk.Coins) (sdk.Coins, error) {
repayment := sdk.Coins{}
if !payment.DenomsSubsetOf(owed) {
return repayment, types.ErrInvalidRepaymentDenom
}
for _, coin := range payment {
if coin.Amount.GT(owed.AmountOf(coin.Denom)) {
repayment = append(repayment, sdk.NewCoin(coin.Denom, owed.AmountOf(coin.Denom)))
} else {
repayment = append(repayment, coin)
}
}
return repayment, nil
}