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 // TODO: panic here probably for mainnet (optional: have a bool that says panic or no) 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()) } }