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params.go
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params.go
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package types
import (
fmt "fmt"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
var _ paramtypes.ParamSet = (*Params)(nil)
// ParamKeyTable the param key table for launch module
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// ParamSetPairs get the params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(
[]byte("Stopped"),
&p.Stopped,
validateStopped,
),
paramtypes.NewParamSetPair(
[]byte("FeePoolFeeRatio"),
&p.FeePoolFeeRatio,
validatePercentageRatio,
),
paramtypes.NewParamSetPair(
[]byte("EcosystemFundFeeRatio"),
&p.EcosystemFundFeeRatio,
validatePercentageRatio,
),
paramtypes.NewParamSetPair(
[]byte("LiquidationFeeRatio"),
&p.LiquidationFeeRatio,
validatePercentageRatio,
),
paramtypes.NewParamSetPair(
[]byte("PartialLiquidationRatio"),
&p.PartialLiquidationRatio,
validatePercentageRatio,
),
paramtypes.NewParamSetPair(
[]byte("FundingRateInterval"),
&p.FundingRateInterval,
validateFundingRateInterval,
),
paramtypes.NewParamSetPair(
[]byte("TwapLookbackWindow"),
&p.TwapLookbackWindow,
validateTwapLookbackWindow,
),
paramtypes.NewParamSetPair(
[]byte("WhitelistedLiquidators"),
&p.WhitelistedLiquidators,
validateAddress,
),
}
}
// NewParams creates a new Params instance
func NewParams(
stopped bool,
feePoolFeeRatio sdk.Dec,
ecosystemFundFeeRatio sdk.Dec,
liquidationFeeRatio sdk.Dec,
partialLiquidationRatio sdk.Dec,
fundingRateInterval string,
twapLookbackWindow time.Duration,
) Params {
return Params{
Stopped: stopped,
FeePoolFeeRatio: feePoolFeeRatio,
EcosystemFundFeeRatio: ecosystemFundFeeRatio,
LiquidationFeeRatio: liquidationFeeRatio,
PartialLiquidationRatio: partialLiquidationRatio,
FundingRateInterval: fundingRateInterval,
TwapLookbackWindow: twapLookbackWindow,
}
}
// DefaultParams returns the default parameters for the x/perp module.
func DefaultParams() Params {
return NewParams(
/* stopped */ false,
/* feePoolFeeRatio */ sdk.MustNewDecFromStr("0.001"), // 10 bps
/* ecosystemFundFeeRatio */ sdk.MustNewDecFromStr("0.001"), // 10 bps
/* liquidationFee */ sdk.MustNewDecFromStr("0.025"), // 250 bps
/* partialLiquidationRatio */ sdk.MustNewDecFromStr("0.25"),
/* epochIdentifier */ "30 min",
/* twapLookbackWindow */ 15*time.Minute,
)
}
// Validate validates the set of params
func (p *Params) Validate() error {
err := validateStopped(p.Stopped)
if err != nil {
return err
}
err = validatePercentageRatio(p.LiquidationFeeRatio)
if err != nil {
return err
}
err = validatePercentageRatio(p.FeePoolFeeRatio)
if err != nil {
return err
}
err = validatePercentageRatio(p.PartialLiquidationRatio)
if err != nil {
return err
}
return validatePercentageRatio(p.EcosystemFundFeeRatio)
}
func validatePercentageRatio(i interface{}) error {
ratio, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if ratio.IsNil() {
return fmt.Errorf("invalid nil decimal")
}
if ratio.GT(sdk.OneDec()) {
return fmt.Errorf("ratio is above max value(1.00): %s", ratio.String())
} else if ratio.IsNegative() {
return fmt.Errorf("ratio is negative: %s", ratio.String())
}
return nil
}
func validateFundingRateInterval(i interface{}) error {
_, err := getAsString(i)
if err != nil {
return err
}
return nil
}
func validateStopped(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func getAsString(i interface{}) (string, error) {
value, ok := i.(string)
if !ok {
return "invalid", fmt.Errorf("invalid parameter type: %T", i)
}
return value, nil
}
func validateTwapLookbackWindow(i interface{}) error {
val, ok := i.(time.Duration)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if val <= 0 {
return fmt.Errorf("twap lookback window must be positive, current value is %s", val.String())
}
return nil
}
func validateAddress(i interface{}) error {
val, ok := i.([]string)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
for _, addr := range val {
_, err := sdk.AccAddressFromBech32(addr)
if err != nil {
return err
}
}
return nil
}