fix(x/slashing): Emit slashing event with the correct reason in SlashWithInfractionReason (#16784)

x/slashing/keeper/keeper.go

@@ -88,13 +88,21 @@ func (k Keeper) SlashWithInfractionReason(ctx context.Context, consAddr sdk.Cons
 		return err
 	}
 
+	reasonAttr := sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueUnspecified)
+	switch infraction {
+	case stakingtypes.Infraction_INFRACTION_DOUBLE_SIGN:
+		reasonAttr = sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueDoubleSign)
+	case stakingtypes.Infraction_INFRACTION_DOWNTIME:
+		reasonAttr = sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueMissingSignature)
+	}
+
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 	sdkCtx.EventManager().EmitEvent(
 		sdk.NewEvent(
 			types.EventTypeSlash,
 			sdk.NewAttribute(types.AttributeKeyAddress, consAddr.String()),
 			sdk.NewAttribute(types.AttributeKeyPower, fmt.Sprintf("%d", power)),
-			sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueDoubleSign),
+			reasonAttr,
 			sdk.NewAttribute(types.AttributeKeyBurnedCoins, coinsBurned.String()),
 		),
 	)

x/slashing/types/events.go

@@ -13,6 +13,7 @@ const (
 	AttributeKeyMissedBlocks = "missed_blocks"
 	AttributeKeyBurnedCoins  = "burned_coins"
 
+	AttributeValueUnspecified      = "unspecified"
 	AttributeValueDoubleSign       = "double_sign"
 	AttributeValueMissingSignature = "missing_signature"
 )