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params.go
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params.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"gopkg.in/yaml.v2"
)
var _ paramtypes.ParamSet = (*Params)(nil)
var (
KeyMinBondedTarget = []byte("MinBondedTarget")
DefaultMinBondedTarget sdk.Dec = sdk.NewDecWithPrec(6, 1) // 0.6
)
var (
KeyMaxBondedTarget = []byte("MaxBondedTarget")
DefaultMaxBondedTarget sdk.Dec = sdk.NewDecWithPrec(8, 1) // 0.8
)
var (
KeyLowFactor = []byte("LowFactor")
DefaultLowFactor sdk.Dec = sdk.NewDecWithPrec(5, 1) // 0.5
)
var (
KeyLeftoverBurnRate = []byte("LeftoverBurnRate")
DefaultLeftOverBurnRate sdk.Dec = sdk.OneDec()
)
// ParamKeyTable the param key table for launch module
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params instance
func NewParams(
minBondedTarget sdk.Dec,
maxBondedTarget sdk.Dec,
lowFactor sdk.Dec,
leftoverBurnRate sdk.Dec,
) Params {
return Params{
MinBondedTarget: minBondedTarget,
MaxBondedTarget: maxBondedTarget,
LowFactor: lowFactor,
LeftoverBurnRate: leftoverBurnRate,
}
}
// DefaultParams returns a default set of parameters
func DefaultParams() Params {
return NewParams(
DefaultMinBondedTarget,
DefaultMaxBondedTarget,
DefaultLowFactor,
DefaultLeftOverBurnRate,
)
}
// ParamSetPairs get the params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyMinBondedTarget, &p.MinBondedTarget, validateDec),
paramtypes.NewParamSetPair(KeyMaxBondedTarget, &p.MaxBondedTarget, validateDec),
paramtypes.NewParamSetPair(KeyLowFactor, &p.LowFactor, validateDec),
paramtypes.NewParamSetPair(KeyLeftoverBurnRate, &p.LeftoverBurnRate, validateDec),
}
}
// Validate validates the set of params
func (p Params) Validate() error {
if err := validateDec(p.MinBondedTarget); err != nil {
return err
}
if err := validateDec(p.MaxBondedTarget); err != nil {
return err
}
if p.MinBondedTarget.GT(p.MaxBondedTarget) {
return fmt.Errorf("min_bonded_target cannot be greater than max_bonded_target")
}
if err := validateDec(p.LowFactor); err != nil {
return err
}
if err := validateDec(p.LeftoverBurnRate); err != nil {
return err
}
return nil
}
// String implements the Stringer interface.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// validateDec validates the Dec param is between 0 and 1
func validateDec(v interface{}) error {
param, ok := v.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", v)
}
if param.GT(sdk.OneDec()) || param.LT(sdk.ZeroDec()) {
return fmt.Errorf("invalid parameter minBondedTarget")
}
return nil
}