cleanup begin/end block (#553)

* cleanup begin/end block

* update cdp BeginBlocker

* update dist mint

* fix tests

* typo

* add comment on CloseExpiredAuctions

* fix tests

x/auction/abci.go

@@ -1,13 +1,17 @@
 package auction
 
 import (
+	"errors"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/kava-labs/kava/x/auction/types"
 )
 
-// BeginBlocker runs at the start of every block.
+// BeginBlocker closes all expired auctions at the end of each block. It panics if
+// there's an error other than ErrAuctionNotFound.
 func BeginBlocker(ctx sdk.Context, k Keeper) {
 	err := k.CloseExpiredAuctions(ctx)
-	if err != nil {
+	if err != nil && !errors.Is(err, types.ErrAuctionNotFound) {
 		panic(err)
 	}
 }

x/auction/keeper/auctions.go

@@ -1,6 +1,7 @@
 package keeper
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -449,7 +450,6 @@ func (k Keeper) PlaceBidDebt(ctx sdk.Context, auction types.DebtAuction, bidder
 
 // CloseAuction closes an auction and distributes funds to the highest bidder.
 func (k Keeper) CloseAuction(ctx sdk.Context, auctionID uint64) error {
-
 	auction, found := k.GetAuction(ctx, auctionID)
 	if !found {
 		return sdkerrors.Wrapf(types.ErrAuctionNotFound, "%d", auctionID)
@@ -460,21 +460,20 @@ func (k Keeper) CloseAuction(ctx sdk.Context, auctionID uint64) error {
 	}
 
 	// payout to the last bidder
+	var err error
 	switch auc := auction.(type) {
 	case types.SurplusAuction:
-		if err := k.PayoutSurplusAuction(ctx, auc); err != nil {
+		err = k.PayoutSurplusAuction(ctx, auc)
-			return err
-		}
 	case types.DebtAuction:
-		if err := k.PayoutDebtAuction(ctx, auc); err != nil {
+		err = k.PayoutDebtAuction(ctx, auc)
-			return err
-		}
 	case types.CollateralAuction:
-		if err := k.PayoutCollateralAuction(ctx, auc); err != nil {
+		err = k.PayoutCollateralAuction(ctx, auc)
-			return err
-		}
 	default:
-		return sdkerrors.Wrap(types.ErrUnrecognizedAuctionType, auc.GetType())
+		err = sdkerrors.Wrap(types.ErrUnrecognizedAuctionType, auc.GetType())
+	}
+
+	if err != nil {
+		return err
 	}
 
 	k.DeleteAuction(ctx, auctionID)
@@ -502,23 +501,17 @@ func (k Keeper) PayoutDebtAuction(ctx sdk.Context, auction types.DebtAuction) er
 		return err
 	}
 	// if there is remaining debt, return it to the calling module to manage
-	if auction.CorrespondingDebt.IsPositive() {
+	if !auction.CorrespondingDebt.IsPositive() {
-		err = k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, auction.Initiator, sdk.NewCoins(auction.CorrespondingDebt))
-		if err != nil {
-			return err
-		}
-	}
 		return nil
+	}
+
+	return k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, auction.Initiator, sdk.NewCoins(auction.CorrespondingDebt))
 }
 
 // PayoutSurplusAuction pays out the proceeds for a surplus auction.
 func (k Keeper) PayoutSurplusAuction(ctx sdk.Context, auction types.SurplusAuction) error {
 	// Send the tokens from the auction module account where they are being managed to the bidder who won the auction
-	err := k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, auction.Bidder, sdk.NewCoins(auction.Lot))
+	return k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, auction.Bidder, sdk.NewCoins(auction.Lot))
-	if err != nil {
-		return err
-	}
-	return nil
 }
 
 // PayoutCollateralAuction pays out the proceeds for a collateral auction.
@@ -530,29 +523,30 @@ func (k Keeper) PayoutCollateralAuction(ctx sdk.Context, auction types.Collatera
 	}
 
 	// if there is remaining debt after the auction, send it back to the initiating module for management
-	if auction.CorrespondingDebt.IsPositive() {
+	if !auction.CorrespondingDebt.IsPositive() {
-		err = k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, auction.Initiator, sdk.NewCoins(auction.CorrespondingDebt))
-		if err != nil {
-			return err
-		}
-	}
 		return nil
+	}
+
+	return k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, auction.Initiator, sdk.NewCoins(auction.CorrespondingDebt))
 }
 
-// CloseExpiredAuctions finds all auctions that are past (or at) their ending times and closes them, paying out to the highest bidder.
+// CloseExpiredAuctions iterates over all the auctions stored by until the current
+// block timestamp and that are past (or at) their ending times and closes them,
+// paying out to the highest bidder.
 func (k Keeper) CloseExpiredAuctions(ctx sdk.Context) error {
-	var expiredAuctions []uint64
+	var err error
-	k.IterateAuctionsByTime(ctx, ctx.BlockTime(), func(id uint64) bool {
+	k.IterateAuctionsByTime(ctx, ctx.BlockTime(), func(id uint64) (stop bool) {
-		expiredAuctions = append(expiredAuctions, id)
+		err = k.CloseAuction(ctx, id)
+		if err != nil && !errors.Is(err, types.ErrAuctionNotFound) {
+			// stop iteration
+			return true
+		}
+		// reset error in case the last element had an ErrAuctionNotFound
+		err = nil
 		return false
 	})
-	// Note: iteration and auction closing are in separate loops as db should not be modified during iteration // TODO is this correct? gov modifies during iteration
+
-	for _, id := range expiredAuctions {
-		if err := k.CloseAuction(ctx, id); err != nil {
 	return err
-		}
-	}
-	return nil
 }
 
 // earliestTime returns the earliest of two times.

x/cdp/abci.go

@@ -1,9 +1,13 @@
 package cdp
 
 import (
+	"errors"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	abci "github.com/tendermint/tendermint/abci/types"
+
+	pricefeedtypes "github.com/kava-labs/kava/x/pricefeed/types"
 )
 
 // BeginBlocker compounds the debt in outstanding cdps and liquidates cdps that are below the required collateralization ratio
@@ -17,7 +21,6 @@ func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k Keeper) {
 	}
 
 	for _, cp := range params.CollateralParams {
-
 		ok := k.UpdatePricefeedStatus(ctx, cp.SpotMarketID)
 		if !ok {
 			continue
@@ -29,26 +32,30 @@ func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k Keeper) {
 		}
 
 		err := k.UpdateFeesForAllCdps(ctx, cp.Denom)
+		if err != nil {
+			panic(err)
+		}
 
-		if err != nil {
-			panic(err)
-		}
 		err = k.LiquidateCdps(ctx, cp.LiquidationMarketID, cp.Denom, cp.LiquidationRatio)
-		if err != nil {
+		if err != nil && !errors.Is(err, pricefeedtypes.ErrNoValidPrice) {
 			panic(err)
 		}
 	}
+
 	err := k.RunSurplusAndDebtAuctions(ctx)
 	if err != nil {
 		panic(err)
 	}
+
 	distTimeElapsed := sdk.NewInt(ctx.BlockTime().Unix() - previousDistTime.Unix())
 	if !distTimeElapsed.GTE(sdk.NewInt(int64(params.SavingsDistributionFrequency.Seconds()))) {
 		return
 	}
+
 	err = k.DistributeSavingsRate(ctx, params.DebtParam.Denom)
 	if err != nil {
 		panic(err)
 	}
+
 	k.SetPreviousSavingsDistribution(ctx, ctx.BlockTime())
 }

x/cdp/keeper/auctions.go

@@ -149,11 +149,13 @@ func (k Keeper) RunSurplusAndDebtAuctions(ctx sdk.Context) error {
 	}
 	remainingDebt := k.GetTotalDebt(ctx, types.LiquidatorMacc)
 	params := k.GetParams(ctx)
+
 	if remainingDebt.GTE(params.DebtAuctionThreshold) {
 		debtLot := sdk.NewCoin(k.GetDebtDenom(ctx), params.DebtAuctionLot)
 		bidCoin := sdk.NewCoin(params.DebtParam.Denom, debtLot.Amount)
-		_, err := k.auctionKeeper.StartDebtAuction(
+		initialLot := sdk.NewCoin(k.GetGovDenom(ctx), debtLot.Amount.Mul(sdk.NewInt(dump)))
-			ctx, types.LiquidatorMacc, bidCoin, sdk.NewCoin(k.GetGovDenom(ctx), debtLot.Amount.Mul(sdk.NewInt(dump))), debtLot)
+
+		_, err := k.auctionKeeper.StartDebtAuction(ctx, types.LiquidatorMacc, bidCoin, initialLot, debtLot)
 		if err != nil {
 			return err
 		}
@@ -163,6 +165,7 @@ func (k Keeper) RunSurplusAndDebtAuctions(ctx sdk.Context) error {
 	if !surplus.GTE(params.SurplusAuctionThreshold) {
 		return nil
 	}
+
 	surplusLot := sdk.NewCoin(params.DebtParam.Denom, sdk.MinInt(params.SurplusAuctionLot, surplus))
 	_, err := k.auctionKeeper.StartSurplusAuction(ctx, types.LiquidatorMacc, surplusLot, k.GetGovDenom(ctx))
 	return err

x/cdp/keeper/fees.go

@@ -26,8 +26,8 @@ func (k Keeper) CalculateFees(ctx sdk.Context, principal sdk.Coin, periods sdk.I
 func (k Keeper) UpdateFeesForAllCdps(ctx sdk.Context, collateralDenom string) error {
 	var iterationErr error
 	k.IterateCdpsByDenom(ctx, collateralDenom, func(cdp types.CDP) bool {
-
 		oldCollateralToDebtRatio := k.CalculateCollateralToDebtRatio(ctx, cdp.Collateral, cdp.Principal.Add(cdp.AccumulatedFees))
+		// periods = bblock timestamp - fees updated
 		periods := sdk.NewInt(ctx.BlockTime().Unix()).Sub(sdk.NewInt(cdp.FeesUpdated.Unix()))
 
 		newFees := k.CalculateFees(ctx, cdp.Principal, periods, collateralDenom)
@@ -55,12 +55,14 @@ func (k Keeper) UpdateFeesForAllCdps(ctx sdk.Context, collateralDenom string) er
 		if (newFeesSavings.IsZero() && !savingsRate.IsZero()) || (newFeesSurplus.IsZero() && !savingsRate.Equal(sdk.OneDec())) {
 			return false
 		}
+
 		// mint debt coins to the cdp account
 		err := k.MintDebtCoins(ctx, types.ModuleName, k.GetDebtDenom(ctx), newFees)
 		if err != nil {
 			iterationErr = err
 			return true
 		}
+
 		previousDebt := k.GetTotalPrincipal(ctx, collateralDenom, dp.Denom)
 		newDebt := previousDebt.Add(newFees.Amount)
 		k.SetTotalPrincipal(ctx, collateralDenom, dp.Denom, newDebt)
@@ -100,17 +102,14 @@ func (k Keeper) IncrementTotalPrincipal(ctx sdk.Context, collateralDenom string,
 	total := k.GetTotalPrincipal(ctx, collateralDenom, principal.Denom)
 	total = total.Add(principal.Amount)
 	k.SetTotalPrincipal(ctx, collateralDenom, principal.Denom, total)
-
 }
 
 // DecrementTotalPrincipal decrements the total amount of debt that has been drawn for a particular collateral type
 func (k Keeper) DecrementTotalPrincipal(ctx sdk.Context, collateralDenom string, principal sdk.Coin) {
 	total := k.GetTotalPrincipal(ctx, collateralDenom, principal.Denom)
-	total = total.Sub(principal.Amount)
+	// NOTE: negative total principal can happen in tests due to rounding errors
-	if total.IsNegative() {
+	// in fee calculation
-		// can happen in tests due to rounding errors in fee calculation
+	total = sdk.MaxInt(total.Sub(principal.Amount), sdk.ZeroInt())
-		total = sdk.ZeroInt()
-	}
 	k.SetTotalPrincipal(ctx, collateralDenom, principal.Denom, total)
 }
 

x/cdp/keeper/savings.go

@@ -18,6 +18,7 @@ func (k Keeper) DistributeSavingsRate(ctx sdk.Context, debtDenom string) error {
 	if !found {
 		return sdkerrors.Wrap(types.ErrDebtNotSupported, debtDenom)
 	}
+
 	savingsRateMacc := k.supplyKeeper.GetModuleAccount(ctx, types.SavingsRateMacc)
 	surplusToDistribute := savingsRateMacc.GetCoins().AmountOf(dp.Denom)
 	if surplusToDistribute.IsZero() {
@@ -26,21 +27,26 @@ func (k Keeper) DistributeSavingsRate(ctx sdk.Context, debtDenom string) error {
 
 	modAccountCoins := k.getModuleAccountCoins(ctx, dp.Denom)
 	totalSupplyLessModAccounts := k.supplyKeeper.GetSupply(ctx).GetTotal().Sub(modAccountCoins)
+
 	// values to use in interest calculation
 	totalSurplus := sdk.NewDecFromInt(surplusToDistribute)
 	totalSupply := sdk.NewDecFromInt(totalSupplyLessModAccounts.AmountOf(debtDenom))
 
 	var iterationErr error
+	// TODO: avoid iterating over all the accounts by keeping the stored stable coin
+	// holders' addresses separately.
 	k.accountKeeper.IterateAccounts(ctx, func(acc authexported.Account) (stop bool) {
 		_, ok := acc.(supplyexported.ModuleAccountI)
 		if ok {
 			// don't distribute savings rate to module accounts
 			return false
 		}
+
 		debtAmount := acc.GetCoins().AmountOf(debtDenom)
 		if !debtAmount.IsPositive() {
 			return false
 		}
+
 		// (balance * rewardToDisribute) /  totalSupply
 		// interest is the ratable fraction of savings rate owed to that account, rounded using bankers rounding
 		interest := (sdk.NewDecFromInt(debtAmount).Mul(totalSurplus)).Quo(totalSupply).RoundInt()
@@ -51,6 +57,7 @@ func (k Keeper) DistributeSavingsRate(ctx sdk.Context, debtDenom string) error {
 		if !interest.IsPositive() {
 			return false
 		}
+
 		interestCoins := sdk.NewCoins(sdk.NewCoin(debtDenom, interest))
 		err := k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.SavingsRateMacc, acc.GetAddress(), interestCoins)
 		if err != nil {
@@ -60,6 +67,7 @@ func (k Keeper) DistributeSavingsRate(ctx sdk.Context, debtDenom string) error {
 		surplusToDistribute = surplusToDistribute.Sub(interest)
 		return false
 	})
+
 	return iterationErr
 }
 

x/cdp/keeper/seize.go

@@ -24,9 +24,7 @@ func (k Keeper) SeizeCollateral(ctx sdk.Context, cdp types.CDP) error {
 	deposits := k.GetDeposits(ctx, cdp.ID)
 	debt := cdp.Principal.Amount.Add(cdp.AccumulatedFees.Amount)
 	modAccountDebt := k.getModAccountDebt(ctx, types.ModuleName)
-	if modAccountDebt.LT(debt) {
+	debt = sdk.MinInt(debt, modAccountDebt)
-		debt = modAccountDebt
-	}
 	debtCoin := sdk.NewCoin(k.GetDebtDenom(ctx), debt)
 	err := k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, types.LiquidatorMacc, sdk.NewCoins(debtCoin))
 	if err != nil {
@@ -35,6 +33,12 @@ func (k Keeper) SeizeCollateral(ctx sdk.Context, cdp types.CDP) error {
 
 	// liquidate deposits and send collateral from cdp to liquidator
 	for _, dep := range deposits {
+		err := k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, types.LiquidatorMacc, sdk.NewCoins(dep.Amount))
+		if err != nil {
+			return err
+		}
+		k.DeleteDeposit(ctx, dep.CdpID, dep.Depositor)
+
 		ctx.EventManager().EmitEvent(
 			sdk.NewEvent(
 				types.EventTypeCdpLiquidation,
@@ -43,12 +47,8 @@ func (k Keeper) SeizeCollateral(ctx sdk.Context, cdp types.CDP) error {
 				sdk.NewAttribute(types.AttributeKeyDeposit, dep.String()),
 			),
 		)
-		err := k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, types.LiquidatorMacc, sdk.NewCoins(dep.Amount))
-		if err != nil {
-			return err
-		}
-		k.DeleteDeposit(ctx, dep.CdpID, dep.Depositor)
 	}
+
 	err = k.AuctionCollateral(ctx, deposits, debt, cdp.Principal.Denom)
 	if err != nil {
 		return err

x/committee/abci.go

@@ -8,9 +8,7 @@ import (
 
 // BeginBlocker runs at the start of every block.
 func BeginBlocker(ctx sdk.Context, _ abci.RequestBeginBlock, k Keeper) {
-
 	// enact proposals ignoring their expiry time - they could have received enough votes last block before expiring this block
 	k.EnactPassedProposals(ctx)
-
 	k.CloseExpiredProposals(ctx)
 }

x/committee/keeper/keeper.go

@@ -207,9 +207,7 @@ func (k Keeper) GetProposalsByCommittee(ctx sdk.Context, committeeID uint64) []t
 
 // DeleteProposalAndVotes removes a proposal and its associated votes.
 func (k Keeper) DeleteProposalAndVotes(ctx sdk.Context, proposalID uint64) {
-
 	votes := k.GetVotesByProposal(ctx, proposalID)
-
 	k.DeleteProposal(ctx, proposalID)
 	for _, v := range votes {
 		k.DeleteVote(ctx, v.ProposalID, v.Voter)

x/committee/keeper/proposal.go

@@ -138,7 +138,9 @@ func (k Keeper) EnactPassedProposals(ctx sdk.Context) {
 		if err != nil {
 			panic(err)
 		}
+
 		if !passes {
+			// continue to next proposal
 			return false
 		}
 
@@ -164,7 +166,6 @@ func (k Keeper) EnactPassedProposals(ctx sdk.Context) {
 
 // CloseExpiredProposals removes proposals (and associated votes) that have past their deadline.
 func (k Keeper) CloseExpiredProposals(ctx sdk.Context) {
-
 	k.IterateProposals(ctx, func(proposal types.Proposal) bool {
 		if !proposal.HasExpiredBy(ctx.BlockTime()) {
 			return false

x/incentive/keeper/rewards.go

@@ -48,7 +48,8 @@ func (k Keeper) CreateAndDeleteRewardPeriods(ctx sdk.Context) {
 	}
 }
 
-// ApplyRewardsToCdps iterates over the reward periods and creates a claim for each cdp owner that created usdx with the collateral specified in the reward period
+// ApplyRewardsToCdps iterates over the reward periods and creates a claim for each
+// cdp owner that created usdx with the collateral specified in the reward period.
 func (k Keeper) ApplyRewardsToCdps(ctx sdk.Context) {
 	previousBlockTime, found := k.GetPreviousBlockTime(ctx)
 	if !found {
@@ -56,6 +57,7 @@ func (k Keeper) ApplyRewardsToCdps(ctx sdk.Context) {
 		k.SetPreviousBlockTime(ctx, previousBlockTime)
 		return
 	}
+
 	k.IterateRewardPeriods(ctx, func(rp types.RewardPeriod) bool {
 		expired := false
 		// the total amount of usdx created with the collateral type being incentivized
@@ -66,6 +68,7 @@ func (k Keeper) ApplyRewardsToCdps(ctx sdk.Context) {
 			timeElapsed = sdk.NewInt(rp.End.Unix() - previousBlockTime.Unix())
 			expired = true
 		}
+
 		// the amount of rewards to pay (rewardAmount * timeElapsed)
 		rewardsThisPeriod := rp.Reward.Amount.Mul(timeElapsed)
 		id := k.GetNextClaimPeriodID(ctx, rp.Denom)
@@ -85,6 +88,7 @@ func (k Keeper) ApplyRewardsToCdps(ctx sdk.Context) {
 		k.HandleRewardPeriodExpiry(ctx, rp)
 		return false
 	})
+
 	k.SetPreviousBlockTime(ctx, ctx.BlockTime())
 }
 

x/kavadist/keeper/mint.go

@@ -19,43 +19,45 @@ func (k Keeper) MintPeriodInflation(ctx sdk.Context) error {
 		)
 		return nil
 	}
+
 	previousBlockTime, found := k.GetPreviousBlockTime(ctx)
 	if !found {
 		previousBlockTime = ctx.BlockTime()
 		k.SetPreviousBlockTime(ctx, previousBlockTime)
 		return nil
 	}
+
+	var err error
 	for _, period := range params.Periods {
+		switch {
 		// Case 1 - period is fully expired
-		if period.End.Before(previousBlockTime) {
+		case period.End.Before(previousBlockTime):
 			continue
-		}
+
 		// Case 2 - period has ended since the previous block time
-		if period.End.After(previousBlockTime) && period.End.Before(ctx.BlockTime()) {
+		case period.End.After(previousBlockTime) && period.End.Before(ctx.BlockTime()):
 			// calculate time elapsed relative to the periods end time
 			timeElapsed := sdk.NewInt(period.End.Unix() - previousBlockTime.Unix())
-			err := k.mintInflationaryCoins(ctx, period.Inflation, timeElapsed, types.GovDenom)
+			err = k.mintInflationaryCoins(ctx, period.Inflation, timeElapsed, types.GovDenom)
-			if err != nil {
-				return err
-			}
 			// update the value of previousBlockTime so that the next period starts from the end of the last
 			// period and not the original value of previousBlockTime
 			previousBlockTime = period.End
-		}
+
 		// Case 3 - period is ongoing
-		if (period.Start.Before(previousBlockTime) || period.Start.Equal(previousBlockTime)) && period.End.After(ctx.BlockTime()) {
+		case (period.Start.Before(previousBlockTime) || period.Start.Equal(previousBlockTime)) && period.End.After(ctx.BlockTime()):
 			// calculate time elapsed relative to the current block time
 			timeElapsed := sdk.NewInt(ctx.BlockTime().Unix() - previousBlockTime.Unix())
-			err := k.mintInflationaryCoins(ctx, period.Inflation, timeElapsed, types.GovDenom)
+			err = k.mintInflationaryCoins(ctx, period.Inflation, timeElapsed, types.GovDenom)
+
+		// Case 4 - period hasn't started
+		case period.Start.After(ctx.BlockTime()) || period.Start.Equal(ctx.BlockTime()):
+			continue
+		}
+
 		if err != nil {
 			return err
 		}
 	}
-		// Case 4 - period hasn't started
-		if period.Start.After(ctx.BlockTime()) || period.Start.Equal(ctx.BlockTime()) {
-			continue
-		}
-	}
 	k.SetPreviousBlockTime(ctx, ctx.BlockTime())
 	return nil
 }
@@ -78,11 +80,13 @@ func (k Keeper) mintInflationaryCoins(ctx sdk.Context, inflationRate sdk.Dec, ti
 	if err != nil {
 		return err
 	}
+
 	ctx.EventManager().EmitEvent(
 		sdk.NewEvent(
 			types.EventTypeKavaDist,
 			sdk.NewAttribute(types.AttributeKeyInflation, sdk.NewCoin(denom, amountToMint).String()),
 		),
 	)
+
 	return nil
 }

x/pricefeed/abci.go

@@ -1,28 +1,23 @@
 package pricefeed
 
 import (
-	"fmt"
+	"errors"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/kava-labs/kava/x/pricefeed/types"
 )
 
 // EndBlocker updates the current pricefeed
 func EndBlocker(ctx sdk.Context, k Keeper) {
 	// Update the current price of each asset.
 	for _, market := range k.GetMarkets(ctx) {
-		if market.Active {
+		if !market.Active {
-			err := k.SetCurrentPrices(ctx, market.MarketID)
-			if err != nil {
-				// In the event of failure, emit an event.
-				ctx.EventManager().EmitEvent(
-					sdk.NewEvent(
-						EventTypeNoValidPrices,
-						sdk.NewAttribute(AttributeMarketID, fmt.Sprintf("%s", market.MarketID)),
-					),
-				)
 			continue
 		}
+
+		err := k.SetCurrentPrices(ctx, market.MarketID)
+		if err != nil && !errors.Is(err, types.ErrNoValidPrice) {
+			panic(err)
 		}
 	}
-	return
 }

x/pricefeed/keeper/keeper.go

@@ -1,9 +1,12 @@
 package keeper
 
 import (
+	"fmt"
 	"sort"
 	"time"
 
+	"github.com/tendermint/tendermint/libs/log"
+
 	"github.com/cosmos/cosmos-sdk/codec"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@@ -37,6 +40,11 @@ func NewKeeper(
 	}
 }
 
+// Logger returns a module-specific logger.
+func (k Keeper) Logger(ctx sdk.Context) log.Logger {
+	return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
+}
+
 // SetPrice updates the posted price for a specific oracle
 func (k Keeper) SetPrice(
 	ctx sdk.Context,
@@ -111,20 +119,21 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) error {
 			notExpiredPrices = append(notExpiredPrices, types.NewCurrentPrice(v.MarketID, v.Price))
 		}
 	}
+
 	if len(notExpiredPrices) == 0 {
-		store := ctx.KVStore(k.key)
+		// NOTE: The current price stored will continue storing the most recent (expired)
-		store.Set(
+		// price if this is not set.
-			types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(types.CurrentPrice{}),
+		// This zero's out the current price stored value for that market and ensures
-		)
+		// that CDP methods that GetCurrentPrice will return error.
+		k.setCurrentPrice(ctx, marketID, types.CurrentPrice{})
 		return types.ErrNoValidPrice
 	}
 
 	medianPrice := k.CalculateMedianPrice(ctx, notExpiredPrices)
 
 	// check case that market price was not set in genesis
-	if validPrevPrice {
+	if validPrevPrice && !medianPrice.Equal(prevPrice.Price) {
 		// only emit event if price has changed
-		if !medianPrice.Equal(prevPrice.Price) {
 		ctx.EventManager().EmitEvent(
 			sdk.NewEvent(
 				types.EventTypeMarketPriceUpdated,
@@ -133,18 +142,18 @@ func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) error {
 			),
 		)
 	}
-	}
 
-	store := ctx.KVStore(k.key)
 	currentPrice := types.NewCurrentPrice(marketID, medianPrice)
-
+	k.setCurrentPrice(ctx, marketID, currentPrice)
-	store.Set(
-		types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(currentPrice),
-	)
 
 	return nil
 }
 
+func (k Keeper) setCurrentPrice(ctx sdk.Context, marketID string, currentPrice types.CurrentPrice) {
+	store := ctx.KVStore(k.key)
+	store.Set(types.CurrentPriceKey(marketID), k.cdc.MustMarshalBinaryBare(currentPrice))
+}
+
 // CalculateMedianPrice calculates the median prices for the input prices.
 func (k Keeper) CalculateMedianPrice(ctx sdk.Context, prices types.CurrentPrices) sdk.Dec {
 	l := len(prices)

x/validator-vesting/abci.go

@@ -24,22 +24,23 @@ func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k keeper.Keeper)
 	var voteInfos VoteInfos
 	voteInfos = req.LastCommitInfo.GetVotes()
 	validatorVestingKeys := k.GetAllAccountKeys(ctx)
+
 	for _, key := range validatorVestingKeys {
 		acc := k.GetAccountFromAuthKeeper(ctx, key)
-		if k.AccountIsVesting(ctx, acc.GetAddress()) {
+		if !k.AccountIsVesting(ctx, acc.GetAddress()) {
+			continue
+		}
+
 		vote, found := voteInfos.FilterByValidatorAddress(acc.ValidatorAddress)
-			if !found || !vote.SignedLastBlock {
+
-				if ctx.BlockHeight() <= 1 {
+		var missedBlock bool
-					// don't count missed blocks on block 1 since there is no vote history
-					k.UpdateMissingSignCount(ctx, acc.GetAddress(), false)
-				} else {
 		// if the validator was not found or explicitly didn't sign, increment the missing sign count
-					k.UpdateMissingSignCount(ctx, acc.GetAddress(), true)
+		if (!found || !vote.SignedLastBlock) && ctx.BlockHeight() > 1 {
-				}
+			missedBlock = true
-			} else {
-				k.UpdateMissingSignCount(ctx, acc.GetAddress(), false)
 		}
 
+		k.UpdateMissingSignCount(ctx, acc.GetAddress(), missedBlock)
+
 		// check if a period ended in the last block
 		endTimes := k.GetPeriodEndTimes(ctx, key)
 
@@ -51,7 +52,7 @@ func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k keeper.Keeper)
 		// handle any new/remaining debt on the account
 		k.HandleVestingDebt(ctx, key, currentBlockTime)
 	}
-	}
+
 	k.SetPreviousBlockTime(ctx, currentBlockTime)
 }
 

x/validator-vesting/abci_test.go

@@ -74,7 +74,7 @@ func TestBeginBlockerZeroHeight(t *testing.T) {
 
 	vva = vvk.GetAccountFromAuthKeeper(ctx, vva.Address)
 	// require missed block counter doesn't increment because there's no voting history
-	require.Equal(t, types.CurrentPeriodProgress{0, 1}, vva.CurrentPeriodProgress)
+	require.Equal(t, types.CurrentPeriodProgress{MissedBlocks: 0, TotalBlocks: 1}, vva.CurrentPeriodProgress)
 
 	// mark the validator as having missed
 	req = abci.RequestBeginBlock{
@@ -90,7 +90,7 @@ func TestBeginBlockerZeroHeight(t *testing.T) {
 	BeginBlocker(ctx, req, vvk)
 
 	vva = vvk.GetAccountFromAuthKeeper(ctx, vva.Address)
-	require.Equal(t, types.CurrentPeriodProgress{0, 2}, vva.CurrentPeriodProgress)
+	require.Equal(t, types.CurrentPeriodProgress{MissedBlocks: 0, TotalBlocks: 2}, vva.CurrentPeriodProgress)
 }
 
 func TestBeginBlockerSignedBlock(t *testing.T) {