/
params.go
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/
params.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
paramstypes "github.com/cosmos/cosmos-sdk/x/params/types"
"gopkg.in/yaml.v3"
)
// Parameter keys
var (
KeyVotePeriod = []byte("VotePeriod")
KeyVoteThreshold = []byte("VoteThreshold")
KeyRewardBand = []byte("RewardBand")
KeyRewardDistributionWindow = []byte("RewardDistributionWindow")
KeyAcceptList = []byte("AcceptList")
KeySlashFraction = []byte("SlashFraction")
KeySlashWindow = []byte("SlashWindow")
KeyMinValidPerWindow = []byte("MinValidPerWindow")
KeyHistoricAcceptList = []byte("HistoricAcceptList")
KeyStampPeriod = []byte("StampPeriod")
KeyPrunePeriod = []byte("PrunePeriod")
KeyMedianPeriod = []byte("MedianPeriod")
)
// Default parameter values
const (
DefaultVotePeriod = BlocksPerMinute / 2 // 30 seconds
DefaultSlashWindow = BlocksPerWeek // window for a week
DefaultRewardDistributionWindow = BlocksPerYear // window for a year
DefaultStampPeriod = BlocksPerHour / 2 // window for 30 minutes
DefaultPrunePeriod = BlocksPerMonth // window for a month
DefaultMedianPeriod = BlocksPerDay // window for a day
)
// Default parameter values
var (
DefaultVoteThreshold = sdk.NewDecWithPrec(50, 2) // 50%
DefaultRewardBand = sdk.NewDecWithPrec(2, 2) // 2% (-1, 1)
DefaultAcceptList = DenomList{
{
BaseDenom: UmeeDenom,
SymbolDenom: UmeeSymbol,
Exponent: UmeeExponent,
},
{
BaseDenom: AtomDenom,
SymbolDenom: AtomSymbol,
Exponent: AtomExponent,
},
}
DefaultSlashFraction = sdk.NewDecWithPrec(1, 4) // 0.01%
DefaultMinValidPerWindow = sdk.NewDecWithPrec(5, 2) // 5%
DefaultHistoricAcceptList = DenomList(nil)
)
var _ paramstypes.ParamSet = &Params{}
// DefaultParams creates default oracle module parameters
func DefaultParams() Params {
return Params{
VotePeriod: DefaultVotePeriod,
VoteThreshold: DefaultVoteThreshold,
RewardBand: DefaultRewardBand,
RewardDistributionWindow: DefaultRewardDistributionWindow,
AcceptList: DefaultAcceptList,
SlashFraction: DefaultSlashFraction,
SlashWindow: DefaultSlashWindow,
MinValidPerWindow: DefaultMinValidPerWindow,
HistoricAcceptList: DefaultHistoricAcceptList,
StampPeriod: DefaultStampPeriod,
PrunePeriod: DefaultPrunePeriod,
MedianPeriod: DefaultMedianPeriod,
}
}
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramstypes.KeyTable {
return paramstypes.NewKeyTable().RegisterParamSet(&Params{})
}
// ParamSetPairs implements the ParamSet interface and returns all the key/value pairs
// pairs of oracle module's parameters.
func (p *Params) ParamSetPairs() paramstypes.ParamSetPairs {
return paramstypes.ParamSetPairs{
paramstypes.NewParamSetPair(
KeyVotePeriod,
&p.VotePeriod,
validateVotePeriod,
),
paramstypes.NewParamSetPair(
KeyVoteThreshold,
&p.VoteThreshold,
validateVoteThreshold,
),
paramstypes.NewParamSetPair(
KeyRewardBand,
&p.RewardBand,
validateRewardBand,
),
paramstypes.NewParamSetPair(
KeyRewardDistributionWindow,
&p.RewardDistributionWindow,
validateRewardDistributionWindow,
),
paramstypes.NewParamSetPair(
KeyAcceptList,
&p.AcceptList,
validateAcceptList,
),
paramstypes.NewParamSetPair(
KeySlashFraction,
&p.SlashFraction,
validateSlashFraction,
),
paramstypes.NewParamSetPair(
KeySlashWindow,
&p.SlashWindow,
validateSlashWindow,
),
paramstypes.NewParamSetPair(
KeyMinValidPerWindow,
&p.MinValidPerWindow,
validateMinValidPerWindow,
),
paramstypes.NewParamSetPair(
KeyHistoricAcceptList,
&p.HistoricAcceptList,
validateHistoricAcceptList,
),
paramstypes.NewParamSetPair(
KeyStampPeriod,
&p.StampPeriod,
validateStampPeriod,
),
paramstypes.NewParamSetPair(
KeyPrunePeriod,
&p.PrunePeriod,
validatePrunePeriod,
),
paramstypes.NewParamSetPair(
KeyMedianPeriod,
&p.MedianPeriod,
validateMedianPeriod,
),
}
}
// String implements fmt.Stringer interface
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// Validate performs basic validation on oracle parameters.
func (p Params) Validate() error {
if p.VotePeriod == 0 {
return fmt.Errorf("oracle parameter VotePeriod must be > 0, is %d", p.VotePeriod)
}
if p.VoteThreshold.LTE(sdk.NewDecWithPrec(33, 2)) {
return fmt.Errorf("oracle parameter VoteThreshold must be greater than 33 percent")
}
if p.RewardBand.GT(sdk.OneDec()) || p.RewardBand.IsNegative() {
return fmt.Errorf("oracle parameter RewardBand must be between [0, 1]")
}
if p.RewardDistributionWindow < p.VotePeriod {
return fmt.Errorf("oracle parameter RewardDistributionWindow must be greater than or equal with VotePeriod")
}
if p.SlashFraction.GT(sdk.OneDec()) || p.SlashFraction.IsNegative() {
return fmt.Errorf("oracle parameter SlashFraction must be between [0, 1]")
}
if p.SlashWindow < p.VotePeriod {
return fmt.Errorf("oracle parameter SlashWindow must be greater than or equal with VotePeriod")
}
if p.MinValidPerWindow.GT(sdk.OneDec()) || p.MinValidPerWindow.IsNegative() {
return fmt.Errorf("oracle parameter MinValidPerWindow must be between [0, 1]")
}
if p.PrunePeriod < p.StampPeriod {
return fmt.Errorf("oracle parameter PrunePeriod must be greater than or equal with StampPeriod")
}
if p.PrunePeriod < p.MedianPeriod {
return fmt.Errorf("oracle parameter PrunePeriod must be greater than or equal with MedianPeriod")
}
if p.MedianPeriod < p.StampPeriod {
return fmt.Errorf("oracle parameter MedianPeriod must be greater than or equal with StampPeriod")
}
if p.StampPeriod%p.VotePeriod != 0 || p.MedianPeriod%p.VotePeriod != 0 || p.PrunePeriod%p.VotePeriod != 0 {
return fmt.Errorf("oracle parameters StampPeriod, MedianPeriod, and PrunePeriod must be exact multiples of VotePeiod")
}
for _, denom := range p.AcceptList {
if len(denom.BaseDenom) == 0 {
return fmt.Errorf("oracle parameter AcceptList Denom must have BaseDenom")
}
if len(denom.SymbolDenom) == 0 {
return fmt.Errorf("oracle parameter AcceptList Denom must have SymbolDenom")
}
}
for _, denom := range p.HistoricAcceptList {
if len(denom.BaseDenom) == 0 {
return fmt.Errorf("oracle parameter HistoricAcceptList Denom must have BaseDenom")
}
if len(denom.SymbolDenom) == 0 {
return fmt.Errorf("oracle parameter HistoricAcceptList Denom must have SymbolDenom")
}
}
return nil
}
func validateVotePeriod(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v == 0 {
return fmt.Errorf("vote period must be positive: %d", v)
}
return nil
}
func validateVoteThreshold(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.LT(sdk.NewDecWithPrec(33, 2)) {
return fmt.Errorf("vote threshold must be bigger than 33%%: %s", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("vote threshold too large: %s", v)
}
return nil
}
func validateRewardBand(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("reward band must be positive: %s", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("reward band is too large: %s", v)
}
return nil
}
func validateRewardDistributionWindow(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v == 0 {
return fmt.Errorf("reward distribution window must be positive: %d", v)
}
return nil
}
func validateAcceptList(i interface{}) error {
v, ok := i.(DenomList)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
for _, d := range v {
if len(d.BaseDenom) == 0 {
return fmt.Errorf("oracle parameter AcceptList Denom must have BaseDenom")
}
if len(d.SymbolDenom) == 0 {
return fmt.Errorf("oracle parameter AcceptList Denom must have SymbolDenom")
}
}
return nil
}
func validateSlashFraction(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("slash fraction must be positive: %s", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("slash fraction is too large: %s", v)
}
return nil
}
func validateSlashWindow(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v == 0 {
return fmt.Errorf("slash window must be positive: %d", v)
}
return nil
}
func validateMinValidPerWindow(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("min valid per window must be positive: %s", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("min valid per window is too large: %s", v)
}
return nil
}
func validateHistoricAcceptList(i interface{}) error {
v, ok := i.(DenomList)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
for _, d := range v {
if len(d.BaseDenom) == 0 {
return fmt.Errorf("oracle parameter HistoricAcceptList Denom must have BaseDenom")
}
if len(d.SymbolDenom) == 0 {
return fmt.Errorf("oracle parameter HistoricAcceptList Denom must have SymbolDenom")
}
}
return nil
}
func validateStampPeriod(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v < 1 {
return fmt.Errorf("stamp period must be positive: %d", v)
}
return nil
}
func validatePrunePeriod(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v < 1 {
return fmt.Errorf("prune period must be positive: %d", v)
}
return nil
}
func validateMedianPeriod(i interface{}) error {
v, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v < 1 {
return fmt.Errorf("median period must be positive: %d", v)
}
return nil
}