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params.go
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params.go
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package types
import (
"errors"
"fmt"
"strings"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"gopkg.in/yaml.v2"
)
var (
KeyFeeRate = []byte("FeeRate")
DefaultFeeRate int32 = 40
KeyContractAddress = []byte("ContractAddress")
DefaultContractAddress string = "nolus14hj2tavq8fpesdwxxcu44rty3hh90vhujrvcmstl4zr3txmfvw9s0k0puz"
KeyBaseDenom = []byte("BaseDenom")
DefaultBaseDenom string = sdk.DefaultBondDenom
)
// 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(
feeRate int32,
contractAddress string,
baseDenom string,
) Params {
return Params{
FeeRate: feeRate,
ContractAddress: contractAddress,
BaseDenom: baseDenom,
}
}
// DefaultParams returns a default set of parameters.
func DefaultParams() Params {
return NewParams(
DefaultFeeRate,
DefaultContractAddress,
DefaultBaseDenom,
)
}
// ParamSetPairs get the params.ParamSet.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyFeeRate, &p.FeeRate, validateFeeRate),
paramtypes.NewParamSetPair(KeyContractAddress, &p.ContractAddress, validateContractAddress),
paramtypes.NewParamSetPair(KeyBaseDenom, &p.BaseDenom, validateBaseDenom),
}
}
// Validate validates the set of params.
func (p Params) Validate() error {
if err := validateFeeRate(p.FeeRate); err != nil {
return err
}
if err := validateContractAddress(p.ContractAddress); err != nil {
return err
}
if err := validateBaseDenom(p.BaseDenom); err != nil {
return err
}
return nil
}
// String implements the Stringer interface.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
func validateFeeRate(v interface{}) error {
feeRate, ok := v.(int32)
if !ok {
return fmt.Errorf("invalid parameter type: %T", v)
}
if feeRate < 0 || feeRate > 50 {
return ErrInvalidFeeRate
}
return nil
}
func validateContractAddress(v interface{}) error {
contractAddress, ok := v.(string)
if !ok {
return fmt.Errorf("invalid parameter type: %T", v)
}
_, err := sdk.AccAddressFromBech32(contractAddress)
if err != nil {
return sdkerrors.Wrap(ErrInvalidAddress, err.Error())
}
return nil
}
func validateBaseDenom(v interface{}) error {
baseDenom, ok := v.(string)
if !ok {
return fmt.Errorf("invalid parameter type: %T", v)
}
if strings.TrimSpace(baseDenom) == "" {
return errors.New("base denom cannot be blank")
}
err := sdk.ValidateDenom(baseDenom)
if err != nil {
return err
}
return nil
}