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types.go
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package v0_13
import (
"errors"
"fmt"
"strings"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/params"
tmtime "github.com/tendermint/tendermint/types/time"
cdptypes "github.com/kava-labs/kava/x/cdp/types"
kavadistTypes "github.com/kava-labs/kava/x/kavadist/types"
)
// Valid reward multipliers
const (
Small MultiplierName = "small"
Medium MultiplierName = "medium"
Large MultiplierName = "large"
USDXMintingClaimType = "usdx_minting"
HardLiquidityProviderClaimType = "hard_liquidity_provider"
BondDenom = "ukava"
)
// Parameter keys and default values
var (
KeyUSDXMintingRewardPeriods = []byte("USDXMintingRewardPeriods")
KeyHardSupplyRewardPeriods = []byte("HardSupplyRewardPeriods")
KeyHardBorrowRewardPeriods = []byte("HardBorrowRewardPeriods")
KeyHardDelegatorRewardPeriods = []byte("HardDelegatorRewardPeriods")
KeyClaimEnd = []byte("ClaimEnd")
KeyMultipliers = []byte("ClaimMultipliers")
DefaultActive = false
DefaultRewardPeriods = RewardPeriods{}
DefaultMultipliers = Multipliers{}
DefaultUSDXClaims = USDXMintingClaims{}
DefaultHardClaims = HardLiquidityProviderClaims{}
DefaultGenesisAccumulationTimes = GenesisAccumulationTimes{}
DefaultClaimEnd = tmtime.Canonical(time.Unix(0, 0))
GovDenom = cdptypes.DefaultGovDenom
PrincipalDenom = "usdx"
IncentiveMacc = kavadistTypes.ModuleName
)
// GenesisState is the state that must be provided at genesis.
type GenesisState struct {
Params Params `json:"params" yaml:"params"`
USDXAccumulationTimes GenesisAccumulationTimes `json:"usdx_accumulation_times" yaml:"usdx_accumulation_times"`
HardSupplyAccumulationTimes GenesisAccumulationTimes `json:"hard_supply_accumulation_times" yaml:"hard_supply_accumulation_times"`
HardBorrowAccumulationTimes GenesisAccumulationTimes `json:"hard_borrow_accumulation_times" yaml:"hard_borrow_accumulation_times"`
HardDelegatorAccumulationTimes GenesisAccumulationTimes `json:"hard_delegator_accumulation_times" yaml:"hard_delegator_accumulation_times"`
USDXMintingClaims USDXMintingClaims `json:"usdx_minting_claims" yaml:"usdx_minting_claims"`
HardLiquidityProviderClaims HardLiquidityProviderClaims `json:"hard_liquidity_provider_claims" yaml:"hard_liquidity_provider_claims"`
}
// NewGenesisState returns a new genesis state
func NewGenesisState(params Params, usdxAccumTimes, hardSupplyAccumTimes, hardBorrowAccumTimes, hardDelegatorAccumTimes GenesisAccumulationTimes, c USDXMintingClaims) GenesisState {
return GenesisState{
Params: params,
USDXAccumulationTimes: usdxAccumTimes,
HardSupplyAccumulationTimes: hardSupplyAccumTimes,
HardBorrowAccumulationTimes: hardBorrowAccumTimes,
HardDelegatorAccumulationTimes: hardDelegatorAccumTimes,
USDXMintingClaims: c,
}
}
// DefaultGenesisState returns a default genesis state
func DefaultGenesisState() GenesisState {
return GenesisState{
Params: DefaultParams(),
USDXAccumulationTimes: GenesisAccumulationTimes{},
HardSupplyAccumulationTimes: GenesisAccumulationTimes{},
HardBorrowAccumulationTimes: GenesisAccumulationTimes{},
HardDelegatorAccumulationTimes: GenesisAccumulationTimes{},
USDXMintingClaims: DefaultUSDXClaims,
HardLiquidityProviderClaims: DefaultHardClaims,
}
}
// Validate performs basic validation of genesis data returning an
// error for any failed validation criteria.
func (gs GenesisState) Validate() error {
if err := gs.Params.Validate(); err != nil {
return err
}
if err := gs.USDXAccumulationTimes.Validate(); err != nil {
return err
}
if err := gs.HardSupplyAccumulationTimes.Validate(); err != nil {
return err
}
if err := gs.HardBorrowAccumulationTimes.Validate(); err != nil {
return err
}
if err := gs.HardDelegatorAccumulationTimes.Validate(); err != nil {
return err
}
if err := gs.HardLiquidityProviderClaims.Validate(); err != nil {
return err
}
return gs.USDXMintingClaims.Validate()
}
// GenesisAccumulationTime stores the previous reward distribution time and its corresponding collateral type
type GenesisAccumulationTime struct {
CollateralType string `json:"collateral_type" yaml:"collateral_type"`
PreviousAccumulationTime time.Time `json:"previous_accumulation_time" yaml:"previous_accumulation_time"`
RewardFactor sdk.Dec `json:"reward_factor" yaml:"reward_factor"`
}
// NewGenesisAccumulationTime returns a new GenesisAccumulationTime
func NewGenesisAccumulationTime(ctype string, prevTime time.Time, factor sdk.Dec) GenesisAccumulationTime {
return GenesisAccumulationTime{
CollateralType: ctype,
PreviousAccumulationTime: prevTime,
RewardFactor: factor,
}
}
// GenesisAccumulationTimes slice of GenesisAccumulationTime
type GenesisAccumulationTimes []GenesisAccumulationTime
// Validate performs validation of GenesisAccumulationTimes
func (gats GenesisAccumulationTimes) Validate() error {
for _, gat := range gats {
if err := gat.Validate(); err != nil {
return err
}
}
return nil
}
// Validate performs validation of GenesisAccumulationTime
func (gat GenesisAccumulationTime) Validate() error {
if gat.RewardFactor.LT(sdk.ZeroDec()) {
return fmt.Errorf("reward factor should be ≥ 0.0, is %s for %s", gat.RewardFactor, gat.CollateralType)
}
return nil
}
// Params governance parameters for the incentive module
type Params struct {
USDXMintingRewardPeriods RewardPeriods `json:"usdx_minting_reward_periods" yaml:"usdx_minting_reward_periods"`
HardSupplyRewardPeriods RewardPeriods `json:"hard_supply_reward_periods" yaml:"hard_supply_reward_periods"`
HardBorrowRewardPeriods RewardPeriods `json:"hard_borrow_reward_periods" yaml:"hard_borrow_reward_periods"`
HardDelegatorRewardPeriods RewardPeriods `json:"hard_delegator_reward_periods" yaml:"hard_delegator_reward_periods"`
ClaimMultipliers Multipliers `json:"claim_multipliers" yaml:"claim_multipliers"`
ClaimEnd time.Time `json:"claim_end" yaml:"claim_end"`
}
// NewParams returns a new params object
func NewParams(usdxMinting, hardSupply, hardBorrow, hardDelegator RewardPeriods,
multipliers Multipliers, claimEnd time.Time) Params {
return Params{
USDXMintingRewardPeriods: usdxMinting,
HardSupplyRewardPeriods: hardSupply,
HardBorrowRewardPeriods: hardBorrow,
HardDelegatorRewardPeriods: hardDelegator,
ClaimMultipliers: multipliers,
ClaimEnd: claimEnd,
}
}
// DefaultParams returns default params for incentive module
func DefaultParams() Params {
return NewParams(DefaultRewardPeriods, DefaultRewardPeriods,
DefaultRewardPeriods, DefaultRewardPeriods, DefaultMultipliers, DefaultClaimEnd)
}
// ParamKeyTable Key declaration for parameters
func ParamKeyTable() params.KeyTable {
return params.NewKeyTable().RegisterParamSet(&Params{})
}
// ParamSetPairs implements the ParamSet interface and returns all the key/value pairs
func (p *Params) ParamSetPairs() params.ParamSetPairs {
return params.ParamSetPairs{
params.NewParamSetPair(KeyUSDXMintingRewardPeriods, &p.USDXMintingRewardPeriods, validateRewardPeriodsParam),
params.NewParamSetPair(KeyHardSupplyRewardPeriods, &p.HardSupplyRewardPeriods, validateRewardPeriodsParam),
params.NewParamSetPair(KeyHardBorrowRewardPeriods, &p.HardBorrowRewardPeriods, validateRewardPeriodsParam),
params.NewParamSetPair(KeyHardDelegatorRewardPeriods, &p.HardDelegatorRewardPeriods, validateRewardPeriodsParam),
params.NewParamSetPair(KeyClaimEnd, &p.ClaimEnd, validateClaimEndParam),
params.NewParamSetPair(KeyMultipliers, &p.ClaimMultipliers, validateMultipliersParam),
}
}
// Validate checks that the parameters have valid values.
func (p Params) Validate() error {
if err := validateMultipliersParam(p.ClaimMultipliers); err != nil {
return err
}
if err := validateRewardPeriodsParam(p.USDXMintingRewardPeriods); err != nil {
return err
}
if err := validateRewardPeriodsParam(p.HardSupplyRewardPeriods); err != nil {
return err
}
if err := validateRewardPeriodsParam(p.HardBorrowRewardPeriods); err != nil {
return err
}
return validateRewardPeriodsParam(p.HardDelegatorRewardPeriods)
}
func validateRewardPeriodsParam(i interface{}) error {
rewards, ok := i.(RewardPeriods)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return rewards.Validate()
}
func validateMultipliersParam(i interface{}) error {
multipliers, ok := i.(Multipliers)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return multipliers.Validate()
}
func validateClaimEndParam(i interface{}) error {
endTime, ok := i.(time.Time)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if endTime.IsZero() {
return fmt.Errorf("end time should not be zero")
}
return nil
}
// RewardPeriod stores the state of an ongoing reward
type RewardPeriod struct {
Active bool `json:"active" yaml:"active"`
CollateralType string `json:"collateral_type" yaml:"collateral_type"`
Start time.Time `json:"start" yaml:"start"`
End time.Time `json:"end" yaml:"end"`
RewardsPerSecond sdk.Coin `json:"rewards_per_second" yaml:"rewards_per_second"` // per second reward payouts
}
// String implements fmt.Stringer
func (rp RewardPeriod) String() string {
return fmt.Sprintf(`Reward Period:
Collateral Type: %s,
Start: %s,
End: %s,
Rewards Per Second: %s,
Active %t,
`, rp.CollateralType, rp.Start, rp.End, rp.RewardsPerSecond, rp.Active)
}
// NewRewardPeriod returns a new RewardPeriod
func NewRewardPeriod(active bool, collateralType string, start time.Time, end time.Time, reward sdk.Coin) RewardPeriod {
return RewardPeriod{
Active: active,
CollateralType: collateralType,
Start: start,
End: end,
RewardsPerSecond: reward,
}
}
// Validate performs a basic check of a RewardPeriod fields.
func (rp RewardPeriod) Validate() error {
if rp.Start.IsZero() {
return errors.New("reward period start time cannot be 0")
}
if rp.End.IsZero() {
return errors.New("reward period end time cannot be 0")
}
if rp.Start.After(rp.End) {
return fmt.Errorf("end period time %s cannot be before start time %s", rp.End, rp.Start)
}
if !rp.RewardsPerSecond.IsValid() {
return fmt.Errorf("invalid reward amount: %s", rp.RewardsPerSecond)
}
if strings.TrimSpace(rp.CollateralType) == "" {
return fmt.Errorf("reward period collateral type cannot be blank: %s", rp)
}
return nil
}
// RewardPeriods array of RewardPeriod
type RewardPeriods []RewardPeriod
// Validate checks if all the RewardPeriods are valid and there are no duplicated
// entries.
func (rps RewardPeriods) Validate() error {
seenPeriods := make(map[string]bool)
for _, rp := range rps {
if seenPeriods[rp.CollateralType] {
return fmt.Errorf("duplicated reward period with collateral type %s", rp.CollateralType)
}
if err := rp.Validate(); err != nil {
return err
}
seenPeriods[rp.CollateralType] = true
}
return nil
}
// Multiplier amount the claim rewards get increased by, along with how long the claim rewards are locked
type Multiplier struct {
Name MultiplierName `json:"name" yaml:"name"`
MonthsLockup int64 `json:"months_lockup" yaml:"months_lockup"`
Factor sdk.Dec `json:"factor" yaml:"factor"`
}
// NewMultiplier returns a new Multiplier
func NewMultiplier(name MultiplierName, lockup int64, factor sdk.Dec) Multiplier {
return Multiplier{
Name: name,
MonthsLockup: lockup,
Factor: factor,
}
}
// Validate multiplier param
func (m Multiplier) Validate() error {
if err := m.Name.IsValid(); err != nil {
return err
}
if m.MonthsLockup < 0 {
return fmt.Errorf("expected non-negative lockup, got %d", m.MonthsLockup)
}
if m.Factor.IsNegative() {
return fmt.Errorf("expected non-negative factor, got %s", m.Factor.String())
}
return nil
}
// String implements fmt.Stringer
func (m Multiplier) String() string {
return fmt.Sprintf(`Claim Multiplier:
Name: %s
Months Lockup %d
Factor %s
`, m.Name, m.MonthsLockup, m.Factor)
}
// Multipliers slice of Multiplier
type Multipliers []Multiplier
// Validate validates each multiplier
func (ms Multipliers) Validate() error {
for _, m := range ms {
if err := m.Validate(); err != nil {
return err
}
}
return nil
}
// String implements fmt.Stringer
func (ms Multipliers) String() string {
out := "Claim Multipliers\n"
for _, s := range ms {
out += fmt.Sprintf("%s\n", s)
}
return out
}
// MultiplierName name for valid multiplier
type MultiplierName string
// IsValid checks if the input is one of the expected strings
func (mn MultiplierName) IsValid() error {
switch mn {
case Small, Medium, Large:
return nil
}
return fmt.Errorf("invalid multiplier name: %s", mn)
}
// Claim is an interface for handling common claim actions
type Claim interface {
GetOwner() sdk.AccAddress
GetReward() sdk.Coin
GetType() string
}
// Claims is a slice of Claim
type Claims []Claim
// BaseClaim is a common type shared by all Claims
type BaseClaim struct {
Owner sdk.AccAddress `json:"owner" yaml:"owner"`
Reward sdk.Coin `json:"reward" yaml:"reward"`
}
// GetOwner is a getter for Claim Owner
func (c BaseClaim) GetOwner() sdk.AccAddress { return c.Owner }
// GetReward is a getter for Claim Reward
func (c BaseClaim) GetReward() sdk.Coin { return c.Reward }
// GetType returns the claim type, used to identify auctions in event attributes
func (c BaseClaim) GetType() string { return "base" }
// Validate performs a basic check of a BaseClaim fields
func (c BaseClaim) Validate() error {
if c.Owner.Empty() {
return errors.New("claim owner cannot be empty")
}
if !c.Reward.IsValid() {
return fmt.Errorf("invalid reward amount: %s", c.Reward)
}
return nil
}
// String implements fmt.Stringer
func (c BaseClaim) String() string {
return fmt.Sprintf(`Claim:
Owner: %s,
Reward: %s,
`, c.Owner, c.Reward)
}
// -------------- Custom Claim Types --------------
// USDXMintingClaim is for USDX minting rewards
type USDXMintingClaim struct {
BaseClaim `json:"base_claim" yaml:"base_claim"`
RewardIndexes RewardIndexes `json:"reward_indexes" yaml:"reward_indexes"`
}
// NewUSDXMintingClaim returns a new USDXMintingClaim
func NewUSDXMintingClaim(owner sdk.AccAddress, reward sdk.Coin, rewardIndexes RewardIndexes) USDXMintingClaim {
return USDXMintingClaim{
BaseClaim: BaseClaim{
Owner: owner,
Reward: reward,
},
RewardIndexes: rewardIndexes,
}
}
// GetType returns the claim's type
func (c USDXMintingClaim) GetType() string { return USDXMintingClaimType }
// GetReward returns the claim's reward coin
func (c USDXMintingClaim) GetReward() sdk.Coin { return c.Reward }
// GetOwner returns the claim's owner
func (c USDXMintingClaim) GetOwner() sdk.AccAddress { return c.Owner }
// Validate performs a basic check of a Claim fields
func (c USDXMintingClaim) Validate() error {
if err := c.RewardIndexes.Validate(); err != nil {
return err
}
return c.BaseClaim.Validate()
}
// String implements fmt.Stringer
func (c USDXMintingClaim) String() string {
return fmt.Sprintf(`%s
Reward Indexes: %s,
`, c.BaseClaim, c.RewardIndexes)
}
// HasRewardIndex check if a claim has a reward index for the input collateral type
func (c USDXMintingClaim) HasRewardIndex(collateralType string) (int64, bool) {
for index, ri := range c.RewardIndexes {
if ri.CollateralType == collateralType {
return int64(index), true
}
}
return 0, false
}
// USDXMintingClaims slice of USDXMintingClaim
type USDXMintingClaims []USDXMintingClaim
// Validate checks if all the claims are valid and there are no duplicated
// entries.
func (cs USDXMintingClaims) Validate() error {
for _, c := range cs {
if err := c.Validate(); err != nil {
return err
}
}
return nil
}
// HardLiquidityProviderClaim stores the hard liquidity provider rewards that can be claimed by owner
type HardLiquidityProviderClaim struct {
BaseClaim `json:"base_claim" yaml:"base_claim"`
SupplyRewardIndexes RewardIndexes `json:"supply_reward_indexes" yaml:"supply_reward_indexes"`
BorrowRewardIndexes RewardIndexes `json:"borrow_reward_indexes" yaml:"borrow_reward_indexes"`
DelegatorRewardIndexes RewardIndexes `json:"delegator_reward_indexes" yaml:"delegator_reward_indexes"`
}
// NewHardLiquidityProviderClaim returns a new HardLiquidityProviderClaim
func NewHardLiquidityProviderClaim(owner sdk.AccAddress, reward sdk.Coin, supplyRewardIndexes,
borrowRewardIndexes, delegatorRewardIndexes RewardIndexes) HardLiquidityProviderClaim {
return HardLiquidityProviderClaim{
BaseClaim: BaseClaim{
Owner: owner,
Reward: reward,
},
SupplyRewardIndexes: supplyRewardIndexes,
BorrowRewardIndexes: borrowRewardIndexes,
DelegatorRewardIndexes: delegatorRewardIndexes,
}
}
// GetType returns the claim's type
func (c HardLiquidityProviderClaim) GetType() string { return HardLiquidityProviderClaimType }
// GetReward returns the claim's reward coin
func (c HardLiquidityProviderClaim) GetReward() sdk.Coin { return c.Reward }
// GetOwner returns the claim's owner
func (c HardLiquidityProviderClaim) GetOwner() sdk.AccAddress { return c.Owner }
// Validate performs a basic check of a HardLiquidityProviderClaim fields
func (c HardLiquidityProviderClaim) Validate() error {
if err := c.SupplyRewardIndexes.Validate(); err != nil {
return err
}
if err := c.BorrowRewardIndexes.Validate(); err != nil {
return err
}
if err := c.DelegatorRewardIndexes.Validate(); err != nil {
return err
}
return c.BaseClaim.Validate()
}
// String implements fmt.Stringer
func (c HardLiquidityProviderClaim) String() string {
return fmt.Sprintf(`%s
Supply Reward Indexes: %s,
Borrow Reward Indexes: %s,
Delegator Reward Indexes: %s,
`, c.BaseClaim, c.SupplyRewardIndexes, c.BorrowRewardIndexes, c.DelegatorRewardIndexes)
}
// HasSupplyRewardIndex check if a claim has a supply reward index for the input collateral type
func (c HardLiquidityProviderClaim) HasSupplyRewardIndex(denom string) (int64, bool) {
for index, ri := range c.SupplyRewardIndexes {
if ri.CollateralType == denom {
return int64(index), true
}
}
return 0, false
}
// HasBorrowRewardIndex check if a claim has a borrow reward index for the input collateral type
func (c HardLiquidityProviderClaim) HasBorrowRewardIndex(denom string) (int64, bool) {
for index, ri := range c.BorrowRewardIndexes {
if ri.CollateralType == denom {
return int64(index), true
}
}
return 0, false
}
// HasDelegatorRewardIndex check if a claim has a delegator reward index for the input collateral type
func (c HardLiquidityProviderClaim) HasDelegatorRewardIndex(collateralType string) (int64, bool) {
for index, ri := range c.DelegatorRewardIndexes {
if ri.CollateralType == collateralType {
return int64(index), true
}
}
return 0, false
}
// HardLiquidityProviderClaims slice of HardLiquidityProviderClaim
type HardLiquidityProviderClaims []HardLiquidityProviderClaim
// Validate checks if all the claims are valid and there are no duplicated
// entries.
func (cs HardLiquidityProviderClaims) Validate() error {
for _, c := range cs {
if err := c.Validate(); err != nil {
return err
}
}
return nil
}
// -------------- Subcomponents of Custom Claim Types --------------
// TODO: refactor RewardPeriod name from 'collateralType' to 'denom'
// RewardIndex stores reward accumulation information
type RewardIndex struct {
CollateralType string `json:"collateral_type" yaml:"collateral_type"`
RewardFactor sdk.Dec `json:"reward_factor" yaml:"reward_factor"`
}
// NewRewardIndex returns a new RewardIndex
func NewRewardIndex(collateralType string, factor sdk.Dec) RewardIndex {
return RewardIndex{
CollateralType: collateralType,
RewardFactor: factor,
}
}
func (ri RewardIndex) String() string {
return fmt.Sprintf(`Collateral Type: %s, RewardFactor: %s`, ri.CollateralType, ri.RewardFactor)
}
// Validate validates reward index
func (ri RewardIndex) Validate() error {
if ri.RewardFactor.IsNegative() {
return fmt.Errorf("reward factor value should be positive, is %s for %s", ri.RewardFactor, ri.CollateralType)
}
if strings.TrimSpace(ri.CollateralType) == "" {
return fmt.Errorf("collateral type should not be empty")
}
return nil
}
// RewardIndexes slice of RewardIndex
type RewardIndexes []RewardIndex
// Validate validation for reward indexes
func (ris RewardIndexes) Validate() error {
for _, ri := range ris {
if err := ri.Validate(); err != nil {
return err
}
}
return nil
}