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params.go
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params.go
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package types
import (
"fmt"
paramstypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
const (
DefaultParamspace = ModuleName
)
var (
DefaultMinFees []MinFee
MinFeesStoreKey = []byte("MinFees")
)
// ParamKeyTable Key declaration for parameters
func ParamKeyTable() paramstypes.KeyTable {
return paramstypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams create a new params object with the given data
func NewParams(minFees []MinFee) Params {
return Params{
MinFees: minFees,
}
}
// DefaultParams return default params object
func DefaultParams() Params {
return Params{
MinFees: DefaultMinFees,
}
}
func (params *Params) ParamSetPairs() paramstypes.ParamSetPairs {
return paramstypes.ParamSetPairs{
paramstypes.NewParamSetPair(MinFeesStoreKey, ¶ms.MinFees, ValidateMinFeesParam),
}
}
// Validate perform basic checks on all parameters to ensure they are correct
func (params Params) Validate() error {
if err := ValidateMinFeesParam(params.MinFees); err != nil {
return err
}
return nil
}
func ValidateMinFeesParam(i interface{}) error {
fees, isCorrectParam := i.([]MinFee)
if !isCorrectParam {
return fmt.Errorf("invalid parameter type: %s", i)
}
for _, fee := range fees {
if err := fee.Validate(); err != nil {
return err
}
if isMinFeeDuplicated(fee, fees) {
return fmt.Errorf("duplicated min fee for message type %s", fee.MessageType)
}
}
return nil
}
func isMinFeeDuplicated(value MinFee, minFees []MinFee) bool {
var count = 0
for _, fee := range minFees {
if fee.MessageType == value.MessageType {
count++
}
}
return count > 1
}