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event_handler.go
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/
event_handler.go
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package types
import (
"encoding/json"
"errors"
"fmt"
)
type EventHandler struct {
Name string `json:"name"`
Exec Exec `json:"exec"`
}
type eventHandler EventHandler
func (e EventHandler) assertValid() error {
s := e.Name
switch s {
case "pre-start", "post-stop":
return nil
case "":
return errors.New(`eventHandler "name" cannot be empty`)
default:
return fmt.Errorf(`bad eventHandler "name": %q`, s)
}
}
func (e EventHandler) MarshalJSON() ([]byte, error) {
if err := e.assertValid(); err != nil {
return nil, err
}
return json.Marshal(eventHandler(e))
}
func (e *EventHandler) UnmarshalJSON(data []byte) error {
var je eventHandler
err := json.Unmarshal(data, &je)
if err != nil {
return err
}
ne := EventHandler(je)
if err := ne.assertValid(); err != nil {
return err
}
*e = ne
return nil
}