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params.go
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params.go
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package types
import (
"fmt"
sdk "github.com/evoblockchain/evochain/libs/cosmos-sdk/types"
"github.com/evoblockchain/evochain/x/params"
)
const (
// default paramspace for params keeper
DefaultParamspace = ModuleName
)
// Parameter keys
var (
ParamStoreKeyCommunityTax = []byte("communitytax")
ParamStoreKeyWithdrawAddrEnabled = []byte("withdrawaddrenabled")
ParamStoreKeyDistributionType = []byte("distributiontype")
ParamStoreKeyWithdrawRewardEnabled = []byte("withdrawrewardenabled")
ParamStoreKeyRewardTruncatePrecision = []byte("rewardtruncateprecision")
IgnoreInitGenesisList = [][]byte{ParamStoreKeyDistributionType, ParamStoreKeyWithdrawRewardEnabled, ParamStoreKeyRewardTruncatePrecision}
)
// Params defines the set of distribution parameters.
type Params struct {
CommunityTax sdk.Dec `json:"community_tax" yaml:"community_tax"`
WithdrawAddrEnabled bool `json:"withdraw_addr_enabled" yaml:"withdraw_addr_enabled"`
DistributionType uint32 `json:"distribution_type" yaml:"distribution_type"`
WithdrawRewardEnabled bool `json:"withdraw_reward_enabled" yaml:"withdraw_reward_enabled"`
RewardTruncatePrecision int64 `json:"reward_truncate_precision" yaml:"reward_truncate_precision"`
}
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() params.KeyTable {
return params.NewKeyTable().RegisterParamSet(&Params{})
}
// DefaultParams returns default distribution parameters
func DefaultParams() Params {
return Params{
CommunityTax: sdk.NewDecWithPrec(2, 2), // 2%
WithdrawAddrEnabled: true,
WithdrawRewardEnabled: true,
RewardTruncatePrecision: 0,
}
}
// String returns a human readable string representation of Params
func (p Params) String() string {
return fmt.Sprintf(`Distribution Params:
Community Tax: %s
Withdraw Addr Enabled: %t
Distribution Type: %d
Withdraw Reward Enabled: %t
Reward Truncate Precision: %d`,
p.CommunityTax, p.WithdrawAddrEnabled, p.DistributionType, p.WithdrawRewardEnabled, p.RewardTruncatePrecision)
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() params.ParamSetPairs {
return params.ParamSetPairs{
params.NewParamSetPair(ParamStoreKeyCommunityTax, &p.CommunityTax, validateCommunityTax),
params.NewParamSetPair(ParamStoreKeyWithdrawAddrEnabled, &p.WithdrawAddrEnabled, validateWithdrawAddrEnabled),
//new params for distribution proposal
params.NewParamSetPair(ParamStoreKeyDistributionType, &p.DistributionType, validateDistributionType),
params.NewParamSetPair(ParamStoreKeyWithdrawRewardEnabled, &p.WithdrawRewardEnabled, validateWithdrawRewardEnabled),
params.NewParamSetPair(ParamStoreKeyRewardTruncatePrecision, &p.RewardTruncatePrecision, validateRewardTruncatePrecision),
}
}
// ValidateBasic performs basic validation on distribution parameters.
func (p Params) ValidateBasic() error {
if p.CommunityTax.IsNegative() || p.CommunityTax.GT(sdk.OneDec()) {
return fmt.Errorf(
"community tax should non-negative and less than one: %s", p.CommunityTax,
)
}
return nil
}
func validateCommunityTax(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNil() {
return fmt.Errorf("community tax must be not nil")
}
if v.IsNegative() {
return fmt.Errorf("community tax must be positive: %s", v)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("community tax too large: %s", v)
}
return nil
}
func validateWithdrawAddrEnabled(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateDistributionType(i interface{}) error {
distributionType, ok := i.(uint32)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if distributionType != DistributionTypeOnChain && distributionType != DistributionTypeOffChain {
return fmt.Errorf("invalid distribution type: %d", distributionType)
}
return nil
}
func validateWithdrawRewardEnabled(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateRewardTruncatePrecision(i interface{}) error {
precision, ok := i.(int64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if precision < 0 || precision > sdk.Precision {
return fmt.Errorf("invalid parameter precision: %d", precision)
}
return nil
}
// NewParams creates a new instance of Params
func NewParams(communityTax sdk.Dec, withdrawAddrEnabled bool, distributionType uint32, withdrawRewardEnabled bool, rewardTruncatePrecision int64) Params {
return Params{
CommunityTax: communityTax,
WithdrawAddrEnabled: withdrawAddrEnabled,
DistributionType: distributionType,
WithdrawRewardEnabled: withdrawRewardEnabled,
RewardTruncatePrecision: rewardTruncatePrecision,
}
}
// MarshalYAML implements the text format for yaml marshaling
func (p Params) MarshalYAML() (interface{}, error) {
return p.String(), nil
}