/
params.go
83 lines (69 loc) · 1.91 KB
/
params.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
package types
import (
"fmt"
"gopkg.in/yaml.v2"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
var _ paramtypes.ParamSet = (*Params)(nil)
// parameter keys
var (
KeyIssueFee = []byte("IssueFee")
KeyMintFee = []byte("MintFee")
KeyBurnFee = []byte("BurnFee")
)
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyIssueFee, &p.IssueFee, validateFee),
paramtypes.NewParamSetPair(KeyMintFee, &p.MintFee, validateFee),
paramtypes.NewParamSetPair(KeyBurnFee, &p.BurnFee, validateFee),
}
}
// NewParams constructs a new Params instance
func NewParams(issueFee, mintFee, burnFee, transferFee sdk.Coin) Params {
return Params{
IssueFee: issueFee,
MintFee: mintFee,
BurnFee: burnFee,
}
}
// ParamKeyTable returns the TypeTable for the token module
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// DefaultParams return the default params
func DefaultParams() Params {
return Params{
IssueFee: sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(1_000_000_000)),
MintFee: sdk.NewCoin(sdk.DefaultBondDenom, sdk.ZeroInt()),
BurnFee: sdk.NewCoin(sdk.DefaultBondDenom, sdk.ZeroInt()),
}
}
// String returns a human readable string representation of the parameters.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// Validate validates the given params
func (p Params) Validate() error {
if err := validateFee(p.IssueFee); err != nil {
return err
}
if err := validateFee(p.MintFee); err != nil {
return err
}
if err := validateFee(p.BurnFee); err != nil {
return err
}
return nil
}
func validateFee(i interface{}) error {
v, ok := i.(sdk.Coin)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNegative() {
return fmt.Errorf("fee should not be negative")
}
return nil
}