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params.go
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params.go
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package types
import (
"errors"
"fmt"
"strings"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
// Parameter store keys.
var (
KeyMintDenom = []byte("MintDenom")
DefaultBondDenom = sdk.DefaultBondDenom
KeyMaxMintableNanoseconds = []byte("MaxMintableNanoseconds")
DefaultMaxMintablenanoseconds = int64(time.Minute) // 1 minute default
)
// ParamKeyTable ParamTable for minting module.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
func NewParams(mintDenom string, maxMintableNanoseconds sdk.Uint) Params {
return Params{
MintDenom: mintDenom,
MaxMintableNanoseconds: maxMintableNanoseconds,
}
}
// DefaultParams default minting module parameters.
func DefaultParams() Params {
return Params{
MintDenom: sdk.DefaultBondDenom,
MaxMintableNanoseconds: sdk.NewUint(60000000000), // 1 minute default
}
}
// Validate validate params.
func (p Params) Validate() error {
if err := validateMaxMintableNanoseconds(p.MaxMintableNanoseconds); err != nil {
return err
}
if err := validateMintDenom(p.MintDenom); err != nil {
return err
}
return nil
}
// ParamSetPairs Implements params.ParamSet.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyMaxMintableNanoseconds, &p.MaxMintableNanoseconds, validateMaxMintableNanoseconds),
paramtypes.NewParamSetPair(KeyMintDenom, &p.MintDenom, validateMintDenom),
}
}
func validateMaxMintableNanoseconds(i interface{}) error {
v, ok := i.(sdk.Uint)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.LTE(sdk.ZeroUint()) {
return fmt.Errorf("max mintable period must be positive: %d", v)
}
return nil
}
func validateMintDenom(i interface{}) error {
v, ok := i.(string)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if strings.TrimSpace(v) == "" {
return errors.New("mint denom cannot be blank")
}
if err := sdk.ValidateDenom(v); err != nil {
return err
}
return nil
}