/
params.go
180 lines (154 loc) · 4.57 KB
/
params.go
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package types
import (
fmt "fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"gopkg.in/yaml.v3"
)
var _ paramtypes.ParamSet = &Params{}
var (
KeyCompleteLiquidationThreshold = []byte("CompleteLiquidationThreshold")
KeyMinimumCloseFactor = []byte("MinimumCloseFactor")
KeyOracleRewardFactor = []byte("OracleRewardFactor")
KeySmallLiquidationSize = []byte("SmallLiquidationSize")
KeyDirectLiquidationFee = []byte("DirectLiquidationFee")
)
var (
defaultCompleteLiquidationThreshold = sdk.MustNewDecFromStr("0.4")
defaultMinimumCloseFactor = sdk.MustNewDecFromStr("0.05")
defaultOracleRewardFactor = sdk.MustNewDecFromStr("0.01")
defaultSmallLiquidationSize = sdk.MustNewDecFromStr("500.00")
defaultDirectLiquidationFee = sdk.MustNewDecFromStr("0.05")
)
func NewParams() Params {
return Params{}
}
// ParamSetPairs implements the ParamSet interface and returns all the key/value
// pairs pairs of x/leverage module's parameters.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(
KeyCompleteLiquidationThreshold,
&p.CompleteLiquidationThreshold,
validateLiquidationThreshold,
),
paramtypes.NewParamSetPair(
KeyMinimumCloseFactor,
&p.MinimumCloseFactor,
validateMinimumCloseFactor,
),
paramtypes.NewParamSetPair(
KeyOracleRewardFactor,
&p.OracleRewardFactor,
validateOracleRewardFactor,
),
paramtypes.NewParamSetPair(
KeySmallLiquidationSize,
&p.SmallLiquidationSize,
validateSmallLiquidationSize,
),
paramtypes.NewParamSetPair(
KeyDirectLiquidationFee,
&p.DirectLiquidationFee,
validateDirectLiquidationFee,
),
}
}
// String implements the Stringer interface.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// ParamKeyTable returns the x/leverage module's parameter KeyTable expected by
// the x/params module.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// DefaultParams returns a default set of parameters.
func DefaultParams() Params {
return Params{
CompleteLiquidationThreshold: defaultCompleteLiquidationThreshold,
MinimumCloseFactor: defaultMinimumCloseFactor,
OracleRewardFactor: defaultOracleRewardFactor,
SmallLiquidationSize: defaultSmallLiquidationSize,
DirectLiquidationFee: defaultDirectLiquidationFee,
}
}
// validate a set of params
func (p Params) Validate() error {
if err := validateLiquidationThreshold(p.CompleteLiquidationThreshold); err != nil {
return err
}
if err := validateMinimumCloseFactor(p.MinimumCloseFactor); err != nil {
return err
}
if err := validateOracleRewardFactor(p.OracleRewardFactor); err != nil {
return err
}
if err := validateSmallLiquidationSize(p.SmallLiquidationSize); err != nil {
return err
}
if err := validateDirectLiquidationFee(p.DirectLiquidationFee); err != nil {
return err
}
return nil
}
func validateLiquidationThreshold(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if !v.IsPositive() {
return fmt.Errorf("complete liquidation threshold must be positive: %d", v)
}
return nil
}
func validateMinimumCloseFactor(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("minimum close factor cannot be negative: %d", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("minimum close factor cannot exceed 1: %d", v)
}
return nil
}
func validateOracleRewardFactor(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("oracle reward factor cannot be negative: %d", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("oracle reward factor cannot exceed 1: %d", v)
}
return nil
}
func validateSmallLiquidationSize(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("small liquidation size cannot be negative: %d", v)
}
return nil
}
func validateDirectLiquidationFee(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("direct liquidation fee cannot be negative: %d", v)
}
if v.GTE(sdk.OneDec()) {
return fmt.Errorf("direct liquidation fee must be less than 1: %d", v)
}
return nil
}