micro/store/cockroach/metadata.go
Asim Aslam 7b379bf1f1
WIP: Add metadata to store record (#1604)
* Add metadata to store record

* Add metadata to cockroach store

* add metadata to store service implementation

* fix breaking cache test

* Test/fix cockroach metadata usage

* fix store memory metadata bug
2020-06-03 09:45:08 +01:00

46 lines
896 B
Go

package cockroach
import (
"database/sql/driver"
"encoding/json"
"errors"
)
// https://github.com/upper/db/blob/master/postgresql/custom_types.go#L43
type Metadata map[string]interface{}
// Scan satisfies the sql.Scanner interface.
func (m *Metadata) Scan(src interface{}) error {
source, ok := src.([]byte)
if !ok {
return errors.New("Type assertion .([]byte) failed.")
}
var i interface{}
err := json.Unmarshal(source, &i)
if err != nil {
return err
}
*m, ok = i.(map[string]interface{})
if !ok {
return errors.New("Type assertion .(map[string]interface{}) failed.")
}
return nil
}
// Value satisfies the driver.Valuer interface.
func (m Metadata) Value() (driver.Value, error) {
j, err := json.Marshal(m)
return j, err
}
func toMetadata(m *Metadata) map[string]interface{} {
md := make(map[string]interface{})
for k, v := range *m {
md[k] = v
}
return md
}