Merge PR #3189: Reset slashing periods on export

* Reset slashing periods on export
* Rename old slashing period setter to SetValidatorSlashingPeriod
* Update export to reset slashing periods
* Fix cons address
* Remove old slashing period reset
* Add pending log entry
* Update slashing period tests

PENDING.md

@@ -84,6 +84,8 @@ BUG FIXES
   * \#3181 Correctly reset total accum update height and jailed-validator bond height / unbonding height on export-for-zero-height
   * [\#3172](https://github.com/cosmos/cosmos-sdk/pull/3172) Fix parsing `gaiad.toml`
   when it already exists.
+  * [#3187](https://github.com/cosmos/cosmos-sdk/issues/3187) Fix `gaiad export`
+  by resetting each validator's slashing period.
 
 * SDK
 

cmd/gaia/app/export.go

@@ -128,32 +128,52 @@ func (app *GaiaApp) prepForZeroHeightGenesis(ctx sdk.Context) {
 		return false
 	})
 
-	// iterate through validators by power descending, reset bond height, update bond intra-tx counter
+	// Iterate through validators by power descending, reset bond heights, and
+	// update bond intra-tx counters.
 	store := ctx.KVStore(app.keyStake)
 	iter := sdk.KVStoreReversePrefixIterator(store, stake.ValidatorsKey)
 	counter := int16(0)
+
+	var valConsAddrs []sdk.ConsAddress
 	for ; iter.Valid(); iter.Next() {
 		addr := sdk.ValAddress(iter.Key()[1:])
 		validator, found := app.stakeKeeper.GetValidator(ctx, addr)
 		if !found {
 			panic("expected validator, not found")
 		}
+
 		validator.BondHeight = 0
 		validator.UnbondingHeight = 0
+		valConsAddrs = append(valConsAddrs, validator.ConsAddress())
+
 		app.stakeKeeper.SetValidator(ctx, validator)
 		counter++
 	}
+
 	iter.Close()
 
 	/* Handle slashing state. */
 
-	// we have to clear the slashing periods, since they reference heights
+	// remove all existing slashing periods and recreate one for each validator
 	app.slashingKeeper.DeleteValidatorSlashingPeriods(ctx)
 
+	for _, valConsAddr := range valConsAddrs {
+		sp := slashing.ValidatorSlashingPeriod{
+			ValidatorAddr: valConsAddr,
+			StartHeight:   0,
+			EndHeight:     0,
+			SlashedSoFar:  sdk.ZeroDec(),
+		}
+		app.slashingKeeper.SetValidatorSlashingPeriod(ctx, sp)
+	}
+
 	// reset start height on signing infos
-	app.slashingKeeper.IterateValidatorSigningInfos(ctx, func(addr sdk.ConsAddress, info slashing.ValidatorSigningInfo) (stop bool) {
-		info.StartHeight = 0
-		app.slashingKeeper.SetValidatorSigningInfo(ctx, addr, info)
-		return false
-	})
+	app.slashingKeeper.IterateValidatorSigningInfos(
+		ctx,
+		func(addr sdk.ConsAddress, info slashing.ValidatorSigningInfo) (stop bool) {
+			info.StartHeight = 0
+			app.slashingKeeper.SetValidatorSigningInfo(ctx, addr, info)
+			return false
+		},
+	)
 }

x/slashing/genesis.go

@@ -98,7 +98,7 @@ func InitGenesis(ctx sdk.Context, keeper Keeper, data GenesisState, sdata types.
 	}
 
 	for _, slashingPeriod := range data.SlashingPeriods {
-		keeper.addOrUpdateValidatorSlashingPeriod(ctx, slashingPeriod)
+		keeper.SetValidatorSlashingPeriod(ctx, slashingPeriod)
 	}
 
 	keeper.paramspace.SetParamSet(ctx, &data.Params)

x/slashing/hooks.go

@@ -28,14 +28,14 @@ func (k Keeper) onValidatorBonded(ctx sdk.Context, address sdk.ConsAddress, _ sd
 		EndHeight:     0,
 		SlashedSoFar:  sdk.ZeroDec(),
 	}
-	k.addOrUpdateValidatorSlashingPeriod(ctx, slashingPeriod)
+	k.SetValidatorSlashingPeriod(ctx, slashingPeriod)
 }
 
 // Mark the slashing period as having ended when a validator begins unbonding
 func (k Keeper) onValidatorBeginUnbonding(ctx sdk.Context, address sdk.ConsAddress, _ sdk.ValAddress) {
 	slashingPeriod := k.getValidatorSlashingPeriodForHeight(ctx, address, ctx.BlockHeight())
 	slashingPeriod.EndHeight = ctx.BlockHeight()
-	k.addOrUpdateValidatorSlashingPeriod(ctx, slashingPeriod)
+	k.SetValidatorSlashingPeriod(ctx, slashingPeriod)
 }
 
 // When a validator is created, add the address-pubkey relation.

x/slashing/slashing_period.go

@@ -28,7 +28,7 @@ func (k Keeper) capBySlashingPeriod(ctx sdk.Context, address sdk.ConsAddress, fr
 
 	// Update the slashing period struct
 	slashingPeriod.SlashedSoFar = totalToSlash
-	k.addOrUpdateValidatorSlashingPeriod(ctx, slashingPeriod)
+	k.SetValidatorSlashingPeriod(ctx, slashingPeriod)
 
 	return
 }
@@ -80,7 +80,7 @@ func (k Keeper) DeleteValidatorSlashingPeriods(ctx sdk.Context) {
 // This function sets a validator slashing period for a particular validator,
 // start height, end height, and current slashed-so-far total, or updates
 // an existing slashing period for the same validator and start height.
-func (k Keeper) addOrUpdateValidatorSlashingPeriod(ctx sdk.Context, slashingPeriod ValidatorSlashingPeriod) {
+func (k Keeper) SetValidatorSlashingPeriod(ctx sdk.Context, slashingPeriod ValidatorSlashingPeriod) {
 	slashingPeriodValue := ValidatorSlashingPeriodValue{
 		EndHeight:    slashingPeriod.EndHeight,
 		SlashedSoFar: slashingPeriod.SlashedSoFar,

x/slashing/slashing_period_test.go

@@ -19,7 +19,7 @@ func TestGetSetValidatorSlashingPeriod(t *testing.T) {
 		EndHeight:     height + 10,
 		SlashedSoFar:  sdk.ZeroDec(),
 	}
-	keeper.addOrUpdateValidatorSlashingPeriod(ctx, newPeriod)
+	keeper.SetValidatorSlashingPeriod(ctx, newPeriod)
 
 	// Get at start height
 	retrieved := keeper.getValidatorSlashingPeriodForHeight(ctx, addr, height)
@@ -34,12 +34,12 @@ func TestGetSetValidatorSlashingPeriod(t *testing.T) {
 
 	// Get after end height (panic)
 	newPeriod.EndHeight = int64(4)
-	keeper.addOrUpdateValidatorSlashingPeriod(ctx, newPeriod)
+	keeper.SetValidatorSlashingPeriod(ctx, newPeriod)
 	require.Panics(t, func() { keeper.capBySlashingPeriod(ctx, addr, sdk.ZeroDec(), height) })
 
 	// Back to old end height
 	newPeriod.EndHeight = height + 10
-	keeper.addOrUpdateValidatorSlashingPeriod(ctx, newPeriod)
+	keeper.SetValidatorSlashingPeriod(ctx, newPeriod)
 
 	// Set a new, later period
 	anotherPeriod := ValidatorSlashingPeriod{
@@ -48,7 +48,7 @@ func TestGetSetValidatorSlashingPeriod(t *testing.T) {
 		EndHeight:     height + 11,
 		SlashedSoFar:  sdk.ZeroDec(),
 	}
-	keeper.addOrUpdateValidatorSlashingPeriod(ctx, anotherPeriod)
+	keeper.SetValidatorSlashingPeriod(ctx, anotherPeriod)
 
 	// Old period retrieved for prior height
 	retrieved = keeper.getValidatorSlashingPeriodForHeight(ctx, addr, height)
@@ -69,7 +69,7 @@ func TestValidatorSlashingPeriodCap(t *testing.T) {
 		EndHeight:     height + 10,
 		SlashedSoFar:  sdk.ZeroDec(),
 	}
-	keeper.addOrUpdateValidatorSlashingPeriod(ctx, newPeriod)
+	keeper.SetValidatorSlashingPeriod(ctx, newPeriod)
 	half := sdk.NewDec(1).Quo(sdk.NewDec(2))
 
 	// First slash should be full