/
params.go
134 lines (110 loc) · 3.65 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"
"github.com/ethereum/go-ethereum/params"
)
var _ paramtypes.ParamSet = &Params{}
// Parameter keys
var (
ParamStoreKeyNoBaseFee = []byte("NoBaseFee")
ParamStoreKeyBaseFeeChangeDenominator = []byte("BaseFeeChangeDenominator")
ParamStoreKeyElasticityMultiplier = []byte("ElasticityMultiplier")
ParamStoreKeyBaseFee = []byte("BaseFee")
ParamStoreKeyEnableHeight = []byte("EnableHeight")
)
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params instance
func NewParams(noBaseFee bool, baseFeeChangeDenom, elasticityMultiplier uint32, baseFee uint64, enableHeight int64) Params {
return Params{
NoBaseFee: noBaseFee,
BaseFeeChangeDenominator: baseFeeChangeDenom,
ElasticityMultiplier: elasticityMultiplier,
BaseFee: sdk.NewIntFromUint64(baseFee),
EnableHeight: enableHeight,
}
}
// DefaultParams returns default evm parameters
func DefaultParams() Params {
return Params{
NoBaseFee: false,
BaseFeeChangeDenominator: params.BaseFeeChangeDenominator,
ElasticityMultiplier: params.ElasticityMultiplier,
BaseFee: sdk.NewIntFromUint64(params.InitialBaseFee),
EnableHeight: 0,
}
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(ParamStoreKeyNoBaseFee, &p.NoBaseFee, validateBool),
paramtypes.NewParamSetPair(ParamStoreKeyBaseFeeChangeDenominator, &p.BaseFeeChangeDenominator, validateBaseFeeChangeDenominator),
paramtypes.NewParamSetPair(ParamStoreKeyElasticityMultiplier, &p.ElasticityMultiplier, validateElasticityMultiplier),
paramtypes.NewParamSetPair(ParamStoreKeyBaseFee, &p.BaseFee, validateBaseFee),
paramtypes.NewParamSetPair(ParamStoreKeyEnableHeight, &p.EnableHeight, validateEnableHeight),
}
}
// Validate performs basic validation on fee market parameters.
func (p Params) Validate() error {
if p.BaseFeeChangeDenominator == 0 {
return fmt.Errorf("base fee change denominator cannot be 0")
}
if p.BaseFee.IsNegative() {
return fmt.Errorf("initial base fee cannot be negative: %s", p.BaseFee)
}
if p.EnableHeight < 0 {
return fmt.Errorf("enable height cannot be negative: %d", p.EnableHeight)
}
return nil
}
func (p *Params) IsBaseFeeEnabled(height int64) bool {
return !p.NoBaseFee && height >= p.EnableHeight
}
func validateBool(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateBaseFeeChangeDenominator(i interface{}) error {
value, ok := i.(uint32)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if value == 0 {
return fmt.Errorf("base fee change denominator cannot be 0")
}
return nil
}
func validateElasticityMultiplier(i interface{}) error {
_, ok := i.(uint32)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateBaseFee(i interface{}) error {
value, ok := i.(sdk.Int)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if value.IsNegative() {
return fmt.Errorf("base fee cannot be negative")
}
return nil
}
func validateEnableHeight(i interface{}) error {
value, ok := i.(int64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if value < 0 {
return fmt.Errorf("enable height cannot be negative: %d", value)
}
return nil
}