0g-chain/x/cdp/abci.go
2020-04-30 10:23:41 -04:00

75 lines
2.2 KiB
Go

package cdp
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/kava-labs/kava/x/cdp/types"
)
// BeginBlocker compounds the debt in outstanding cdps and liquidates cdps that are below the required collateralization ratio
func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k Keeper) {
params := k.GetParams(ctx)
previousDistTime, found := k.GetPreviousSavingsDistribution(ctx)
if !found {
previousDistTime = ctx.BlockTime()
k.SetPreviousSavingsDistribution(ctx, previousDistTime)
}
for _, cp := range params.CollateralParams {
err := k.UpdateFeesForAllCdps(ctx, cp.Denom)
// handle if an error is returned then propagate up
if err != nil {
ctx.EventManager().EmitEvent(
sdk.NewEvent(
EventTypeBeginBlockerFatal,
sdk.NewAttribute(sdk.AttributeKeyModule, fmt.Sprintf("%s", ModuleName)),
sdk.NewAttribute(types.AttributeKeyError, fmt.Sprintf("%s", err)),
),
)
}
err = k.LiquidateCdps(ctx, cp.MarketID, cp.Denom, cp.LiquidationRatio)
if err != nil {
ctx.EventManager().EmitEvent(
sdk.NewEvent(
EventTypeBeginBlockerFatal,
sdk.NewAttribute(sdk.AttributeKeyModule, fmt.Sprintf("%s", ModuleName)),
sdk.NewAttribute(types.AttributeKeyError, fmt.Sprintf("%s", err)),
),
)
}
}
err := k.RunSurplusAndDebtAuctions(ctx)
if err != nil {
ctx.EventManager().EmitEvent(
sdk.NewEvent(
EventTypeBeginBlockerFatal,
sdk.NewAttribute(sdk.AttributeKeyModule, fmt.Sprintf("%s", ModuleName)),
sdk.NewAttribute(types.AttributeKeyError, fmt.Sprintf("%s", err)),
),
)
}
distTimeElapsed := sdk.NewInt(ctx.BlockTime().Unix() - previousDistTime.Unix())
if distTimeElapsed.GTE(sdk.NewInt(int64(params.SavingsDistributionFrequency.Seconds()))) {
err := k.DistributeSavingsRate(ctx, params.DebtParam.Denom)
if err != nil {
ctx.EventManager().EmitEvent(
sdk.NewEvent(
EventTypeBeginBlockerFatal,
sdk.NewAttribute(sdk.AttributeKeyModule, fmt.Sprintf("%s", ModuleName)),
sdk.NewAttribute(types.AttributeKeyError, fmt.Sprintf("%s", err)),
),
)
}
k.SetPreviousSavingsDistribution(ctx, ctx.BlockTime())
}
return
}