/
migrate.go
53 lines (43 loc) · 1.09 KB
/
migrate.go
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package host
import (
"encoding/json"
"errors"
"fmt"
"github.com/code-ready/crc/pkg/drivers/none"
)
var (
errUnexpectedConfigVersion = errors.New("unexpected config version")
)
type RawDataDriver struct {
*none.Driver
Data []byte // passed directly back when invoking json.Marshal on this type
}
func (r *RawDataDriver) MarshalJSON() ([]byte, error) {
return r.Data, nil
}
func (r *RawDataDriver) UnmarshalJSON(data []byte) error {
r.Data = data
return nil
}
func (r *RawDataDriver) UpdateConfigRaw(rawData []byte) error {
return r.UnmarshalJSON(rawData)
}
func MigrateHost(name string, data []byte) (*Host, error) {
var hostMetadata Metadata
if err := json.Unmarshal(data, &hostMetadata); err != nil {
return nil, err
}
if hostMetadata.ConfigVersion != Version {
return nil, errUnexpectedConfigVersion
}
driver := &RawDataDriver{none.NewDriver(name, ""), nil}
h := Host{
Name: name,
Driver: driver,
}
if err := json.Unmarshal(data, &h); err != nil {
return nil, fmt.Errorf("Error unmarshalling most recent host version: %s", err)
}
h.RawDriver = driver.Data
return &h, nil
}