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params.go
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params.go
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package types
import (
"errors"
"fmt"
"strings"
"time"
squadtypes "github.com/cosmosquad-labs/squad/types"
yaml "gopkg.in/yaml.v2"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
// Parameter store keys
var (
KeyMintDenom = []byte("MintDenom")
KeyBlockTimeThreshold = []byte("BlockTimeThreshold")
KeyInflationSchedules = []byte("InflationSchedules")
// TODO: fix
DefaultInflationSchedules = []InflationSchedule{
{
StartTime: squadtypes.MustParseRFC3339("2022-01-01T00:00:00Z"),
EndTime: squadtypes.MustParseRFC3339("2023-01-01T00:00:00Z"),
Amount: sdk.NewInt(300000000000000),
},
{
StartTime: squadtypes.MustParseRFC3339("2023-01-01T00:00:00Z"),
EndTime: squadtypes.MustParseRFC3339("2024-01-01T00:00:00Z"),
Amount: sdk.NewInt(200000000000000),
},
}
DefaultBlockTimeThreshold = 10 * time.Second
)
// ParamTable for mint module.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
func NewParams(
// TODO: []InflationSchedule or InflationSchedules
mintDenom string, BlockTimeThreshold time.Duration, InflationSchedules []InflationSchedule,
) Params {
return Params{
MintDenom: mintDenom,
BlockTimeThreshold: BlockTimeThreshold,
InflationSchedules: InflationSchedules,
}
}
// default mint module parameters
func DefaultParams() Params {
return Params{
MintDenom: sdk.DefaultBondDenom,
BlockTimeThreshold: DefaultBlockTimeThreshold,
InflationSchedules: DefaultInflationSchedules,
}
}
// validate params
func (p Params) Validate() error {
if err := validateMintDenom(p.MintDenom); err != nil {
return err
}
if err := validateBlockTimeThreshold(p.BlockTimeThreshold); err != nil {
return err
}
// TODO: InflationSchedules
return nil
}
// String implements the Stringer interface.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// Implements params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyMintDenom, &p.MintDenom, validateMintDenom),
paramtypes.NewParamSetPair(KeyBlockTimeThreshold, &p.BlockTimeThreshold, validateBlockTimeThreshold),
paramtypes.NewParamSetPair(KeyInflationSchedules, &p.InflationSchedules, validateInflationSchedules),
}
}
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
}
func validateBlockTimeThreshold(i interface{}) error {
v, ok := i.(time.Duration)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v <= 0 {
return fmt.Errorf("block time threshold must be positive: %d", v)
}
return nil
}
func validateInflationSchedules(i interface{}) error {
v, ok := i.([]InflationSchedule)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
for _, inflation := range v {
if !inflation.Amount.IsPositive() {
return fmt.Errorf("inflation schedule amount must be positive: %s", v)
}
if !inflation.EndTime.After(inflation.StartTime) {
return fmt.Errorf("end time %s must be greater than start time %s", inflation.EndTime.Format(time.RFC3339), inflation.StartTime.Format(time.RFC3339))
}
}
return nil
}