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params.go
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params.go
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package types
import (
"fmt"
"math"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
const (
DefaultBaseFeeChangeDenominator = 8
DefaultElasticityMultiplier = 2
DefaultInitialBaseFee = 1000000000
)
var _ paramtypes.ParamSet = &Params{}
// Parameter keys
var (
ParamStoreKeyNoBaseFee = []byte("NoBaseFee")
ParamStoreKeyBaseFeeChangeDenominator = []byte("BaseFeeChangeDenominator")
ParamStoreKeyElasticityMultiplier = []byte("ElasticityMultiplier")
ParamStoreKeyInitialBaseFee = []byte("InitialBaseFee")
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, initialBaseFee, enableHeight int64) Params {
return Params{
NoBaseFee: noBaseFee,
BaseFeeChangeDenominator: baseFeeChangeDenom,
ElasticityMultiplier: elasticityMultiplier,
InitialBaseFee: initialBaseFee,
EnableHeight: enableHeight,
}
}
// DefaultParams returns default evm parameters
func DefaultParams() Params {
// TODO: use geth parameters
return Params{
NoBaseFee: true,
BaseFeeChangeDenominator: DefaultBaseFeeChangeDenominator,
ElasticityMultiplier: DefaultElasticityMultiplier,
InitialBaseFee: DefaultInitialBaseFee,
EnableHeight: math.MaxInt64,
}
}
// 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(ParamStoreKeyInitialBaseFee, &p.InitialBaseFee, validateInitialBaseFee),
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.InitialBaseFee < 0 {
return fmt.Errorf("initial base fee cannot be negative: %d", p.InitialBaseFee)
}
if p.EnableHeight < 0 {
return fmt.Errorf("enable height cannot be negative: %d", p.EnableHeight)
}
return nil
}
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 validateInitialBaseFee(i interface{}) error {
value, ok := i.(int64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if value < 0 {
return fmt.Errorf("initial base fee cannot be negative: %d", value)
}
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
}