/
params.go
102 lines (83 loc) · 2.51 KB
/
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"
yaml "gopkg.in/yaml.v2"
)
// House params default values
const (
// DefaultMinDeposit is default minimum deposit acceptable.
DefaultMinDeposit int64 = 100
// DefaultHouseParticipationFee is default house participation fee.
DefaultHouseParticipationFee string = "0.1"
)
var (
KeyMinDeposit = []byte("MinDeposit")
KeyHouseParticipationFee = []byte("HouseParticipationFee")
)
// ParamKeyTable for house module
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params instance
func NewParams(minDeposit sdk.Int, houseParticipationFee sdk.Dec) Params {
return Params{
MinDeposit: minDeposit,
HouseParticipationFee: houseParticipationFee,
}
}
// ParamSetPairs implements params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyMinDeposit, &p.MinDeposit, validateMinimumDeposit),
paramtypes.NewParamSetPair(KeyHouseParticipationFee, &p.HouseParticipationFee, validateHouseParticipationFee),
}
}
// DefaultParams returns a default set of parameters.
func DefaultParams() Params {
return NewParams(
sdk.NewInt(DefaultMinDeposit),
sdk.MustNewDecFromStr(DefaultHouseParticipationFee),
)
}
// String returns a human-readable string representation of the parameters.
func (p Params) String() string {
out, err := yaml.Marshal(p)
if err != nil {
panic(err)
}
return string(out)
}
// Validate a set of params
func (p Params) Validate() error {
if err := validateMinimumDeposit(p.MinDeposit); err != nil {
return err
}
if err := validateHouseParticipationFee(p.HouseParticipationFee); err != nil {
return err
}
return nil
}
// validateMinimumDeposit performs a minimum acceptable deposit validation
func validateMinimumDeposit(i interface{}) error {
v, ok := i.(sdk.Int)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.LTE(sdk.OneInt()) {
return fmt.Errorf("minimum deposit must be positive and more than one: %d", v)
}
return nil
}
// validateHouseParticipationFee performs validation of house participation fee
func validateHouseParticipationFee(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.LT(sdk.ZeroDec()) {
return fmt.Errorf("house participation fee cannot be lower than 0: %d", v)
}
return nil
}