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Check spendable balance in cdp sims (#480)

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* fix: check spendable balance

* don't log noisy result.Log

* remove dead comment
This commit is contained in:
Kevin Davis 2020-04-30 17:02:42 -04:00 committed by GitHub
parent e6c0807419
commit 22bba81944
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 20 additions and 17 deletions
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5
x/auction/simulation/operations.go
View File

@ -111,13 +111,12 @@ func SimulateMsgPlaceBid(ak auth.AccountKeeper, keeper keeper.Keeper) simulation
bidder.PrivKey,
)
_, result, err := app.Deliver(tx)
_, _, err = app.Deliver(tx)
if err != nil {
// to aid debugging, add the stack trace to the comment field of the returned opMsg
return simulation.NewOperationMsg(msg, false, fmt.Sprintf("%+v", err)), nil, err
}
// to aid debugging, add the result log to the comment field
return simulation.NewOperationMsg(msg, true, result.Log), nil, nil
return simulation.NewOperationMsg(msg, true, ""), nil, nil
}
}

32
x/cdp/simulation/operations.go
View File

@ -7,7 +7,6 @@ import (
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/simapp/helpers"
sdk "github.com/cosmos/cosmos-sdk/types"
authexported "github.com/cosmos/cosmos-sdk/x/auth/exported"
"github.com/cosmos/cosmos-sdk/x/simulation"
appparams "github.com/kava-labs/kava/app/params"
@ -134,7 +133,7 @@ func SimulateMsgCdp(ak types.AccountKeeper, k keeper.Keeper, pfk types.Pricefeed
// a cdp already exists, deposit to it, draw debt from it, or repay debt to it
// close 25% of the time
if canClose(acc, existingCDP, debtParam.Denom) && shouldClose(r) {
if canClose(spendableCoins, existingCDP, debtParam.Denom) && shouldClose(r) {
repaymentAmount := spendableCoins.AmountOf(debtParam.Denom)
msg := types.NewMsgRepayDebt(acc.GetAddress(), randCollateralParam.Denom, sdk.NewCoin(debtParam.Denom, repaymentAmount))
@ -157,7 +156,7 @@ func SimulateMsgCdp(ak types.AccountKeeper, k keeper.Keeper, pfk types.Pricefeed
}
// deposit 25% of the time
if hasCoins(acc, randCollateralParam.Denom) && shouldDeposit(r) {
if hasCoins(spendableCoins, randCollateralParam.Denom) && shouldDeposit(r) {
randDepositAmount := sdk.NewInt(int64(simulation.RandIntBetween(r, 1, int(spendableCoins.AmountOf(randCollateralParam.Denom).Int64()))))
msg := types.NewMsgDeposit(acc.GetAddress(), acc.GetAddress(), sdk.NewCoin(randCollateralParam.Denom, randDepositAmount))
@ -224,16 +223,21 @@ func SimulateMsgCdp(ak types.AccountKeeper, k keeper.Keeper, pfk types.Pricefeed
}
// repay debt 25% of the time
if hasCoins(acc, debtParam.Denom) {
if hasCoins(spendableCoins, debtParam.Denom) {
debt := existingCDP.Principal.Amount
maxRepay := spendableCoins.AmountOf(debtParam.Denom)
payableDebt := debt.Sub(debtParam.DebtFloor)
if maxRepay.GT(payableDebt) {
maxRepay = payableDebt
if payableDebt.IsZero() {
return simulation.NewOperationMsgBasic(types.ModuleName, "no-operation", "cannot make partial repayment, cdp at debt floor", false, nil), nil, nil
}
randRepayAmount := sdk.NewInt(int64(simulation.RandIntBetween(r, 1, int(maxRepay.Int64()))))
if debt.Equal(debtParam.DebtFloor) && spendableCoins.AmountOf(debtParam.Denom).GTE(debt) {
randRepayAmount = debt
maxRepay := sdk.MinInt(
spendableCoins.AmountOf(debtParam.Denom),
payableDebt,
)
var randRepayAmount sdk.Int
if maxRepay.Equal(sdk.OneInt()) {
randRepayAmount = sdk.OneInt()
} else {
randRepayAmount = sdk.NewInt(int64(simulation.RandIntBetween(r, 1, int(maxRepay.Int64()))))
}
msg := types.NewMsgRepayDebt(acc.GetAddress(), randCollateralParam.Denom, sdk.NewCoin(debtParam.Denom, randRepayAmount))
@ -272,8 +276,8 @@ func shouldDeposit(r *rand.Rand) bool {
return value > threshold
}
func hasCoins(acc authexported.Account, denom string) bool {
return acc.GetCoins().AmountOf(denom).IsPositive()
func hasCoins(spendableCoins sdk.Coins, denom string) bool {
return spendableCoins.AmountOf(denom).IsPositive()
}
func shouldClose(r *rand.Rand) bool {
@ -282,7 +286,7 @@ func shouldClose(r *rand.Rand) bool {
return value > threshold
}
func canClose(acc authexported.Account, c types.CDP, denom string) bool {
func canClose(spendableCoins sdk.Coins, c types.CDP, denom string) bool {
repaymentAmount := c.Principal.Add(c.AccumulatedFees).Amount
return acc.GetCoins().AmountOf(denom).GTE(repaymentAmount)
return spendableCoins.AmountOf(denom).GTE(repaymentAmount)
}