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params.go
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params.go
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package types
import (
"errors"
"fmt"
"time"
sdk "github.com/reapchain/cosmos-sdk/types"
paramtypes "github.com/reapchain/cosmos-sdk/x/params/types"
epochtypes "github.com/reapchain/reapchain/x/epochs/types"
)
// Parameter store key
var (
ParamStoreKeyEnableIncentives = []byte("EnableIncentives")
ParamStoreKeyAllocationLimit = []byte("AllocationLimit")
ParamStoreKeyEpochIdentifier = []byte("EpochIdentifier")
ParamStoreKeyRewardScaler = []byte("RewardScaler")
)
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params object
func NewParams(
enableIncentives bool,
epocheDuration time.Duration,
allocationLimit sdk.Dec,
epochIdentifier string,
rewardScaler sdk.Dec,
) Params {
return Params{
EnableIncentives: enableIncentives,
AllocationLimit: allocationLimit,
IncentivesEpochIdentifier: epochIdentifier,
RewardScaler: rewardScaler,
}
}
func DefaultParams() Params {
return Params{
EnableIncentives: true,
AllocationLimit: sdk.NewDecWithPrec(5, 2),
IncentivesEpochIdentifier: "week",
RewardScaler: sdk.NewDecWithPrec(12, 1),
}
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(ParamStoreKeyEnableIncentives, &p.EnableIncentives, validateBool),
paramtypes.NewParamSetPair(ParamStoreKeyAllocationLimit, &p.AllocationLimit, validatePercentage),
paramtypes.NewParamSetPair(ParamStoreKeyEpochIdentifier, &p.IncentivesEpochIdentifier, epochtypes.ValidateEpochIdentifierInterface),
paramtypes.NewParamSetPair(ParamStoreKeyRewardScaler, &p.RewardScaler, validateUncappedPercentage),
}
}
func validateBool(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validatePercentage(i interface{}) error {
dec, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if dec.IsNil() {
return errors.New("allocation limit cannot be nil")
}
if dec.IsNegative() {
return fmt.Errorf("allocation limit must be positive: %s", dec)
}
if dec.GT(sdk.OneDec()) {
return fmt.Errorf("allocation limit must <= 100: %s", dec)
}
return nil
}
func validateUncappedPercentage(i interface{}) error {
dec, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if dec.IsNil() {
return errors.New("allocation limit cannot be nil")
}
if dec.IsNegative() {
return fmt.Errorf("allocation limit must be positive: %s", dec)
}
return nil
}
func (p Params) Validate() error {
if err := validateBool(p.EnableIncentives); err != nil {
return err
}
if err := validatePercentage(p.AllocationLimit); err != nil {
return err
}
if err := validateUncappedPercentage(p.RewardScaler); err != nil {
return err
}
return epochtypes.ValidateEpochIdentifierString(p.IncentivesEpochIdentifier)
}