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params.go
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params.go
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package types
import (
"fmt"
"strconv"
"strings"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
"gopkg.in/yaml.v2"
)
var _ paramtypes.ParamSet = (*Params)(nil)
const (
TARGET_VERSION = "0.35.4"
MIN_VERSION = "0.34.3"
)
var (
KeyVersion = []byte("Version")
DefaultVersion = Version{
ProviderTarget: TARGET_VERSION,
ProviderMin: MIN_VERSION,
ConsumerTarget: TARGET_VERSION,
ConsumerMin: MIN_VERSION,
}
)
const (
MAX_MINOR = 10000
MAX_REVISION = 10000
)
// This is problematic, since for version parameters we would like to validate that:
// (1) the min version is not greater than the version (limit a,b); and
// (2) the provider and consumer versions are in (for now) sync (limit a,b)
// ParamKeyTable the param key table for launch module
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params instance
func NewParams(
version Version,
) Params {
return Params{
Version: version,
}
}
// DefaultParams returns a default set of parameters
func DefaultParams() Params {
return NewParams(
DefaultVersion,
)
}
// ParamSetPairs get the params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyVersion, &p.Version, validateVersion),
}
}
// helper to convert Version to an integer (easily compared)
func versionToInteger(v string) (int, error) {
s := strings.Split(v, ".")
if len(s) != 3 {
return 0, fmt.Errorf("invalid format")
}
maj, err := strconv.ParseUint(s[0], 10, 0)
if err != nil {
return 0, fmt.Errorf("%w (major)", err)
}
min, err := strconv.ParseUint(s[1], 10, 0)
if err != nil {
return 0, fmt.Errorf("%w (minor)", err)
}
rev, err := strconv.ParseUint(s[2], 10, 0)
if err != nil {
return 0, fmt.Errorf("%w (revision)", err)
}
if min > MAX_MINOR {
return 0, fmt.Errorf("minor too big: %d > max %d", min, MAX_MINOR)
}
if rev > MAX_REVISION {
return 0, fmt.Errorf("revision too big: %d > max %d", rev, MAX_REVISION)
}
n := maj*MAX_MINOR*MAX_REVISION + min*MAX_REVISION + rev
return int(n), nil
}
// Validate validates the set of params
func (p Params) Validate() error {
return validateVersion(p.Version)
}
// String implements the Stringer interface.
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// validateVersion validates the Version param
func validateVersion(v interface{}) error {
version, ok := v.(Version)
if !ok {
return fmt.Errorf("invalid parameter type: %T", v)
}
return version.validateVersion()
}