51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
package dbr
|
|
|
|
// EventReceiver gets events from dbr methods for logging purposes
|
|
type EventReceiver interface {
|
|
Event(eventName string)
|
|
EventKv(eventName string, kvs map[string]string)
|
|
EventErr(eventName string, err error) error
|
|
EventErrKv(eventName string, err error, kvs map[string]string) error
|
|
Timing(eventName string, nanoseconds int64)
|
|
TimingKv(eventName string, nanoseconds int64, kvs map[string]string)
|
|
}
|
|
|
|
type kvs map[string]string
|
|
|
|
// NullEventReceiver is a sentinel EventReceiver; use it if the caller doesn't supply one
|
|
type NullEventReceiver struct{}
|
|
|
|
var nullReceiver = &NullEventReceiver{}
|
|
|
|
// Event receives a simple notification when various events occur
|
|
func (n *NullEventReceiver) Event(eventName string) {
|
|
// noop
|
|
}
|
|
|
|
// EventKv receives a notification when various events occur along with
|
|
// optional key/value data
|
|
func (n *NullEventReceiver) EventKv(eventName string, kvs map[string]string) {
|
|
// noop
|
|
}
|
|
|
|
// EventErr receives a notification of an error if one occurs
|
|
func (n *NullEventReceiver) EventErr(eventName string, err error) error {
|
|
return err
|
|
}
|
|
|
|
// EventErrKv receives a notification of an error if one occurs along with
|
|
// optional key/value data
|
|
func (n *NullEventReceiver) EventErrKv(eventName string, err error, kvs map[string]string) error {
|
|
return err
|
|
}
|
|
|
|
// Timing receives the time an event took to happen
|
|
func (n *NullEventReceiver) Timing(eventName string, nanoseconds int64) {
|
|
// noop
|
|
}
|
|
|
|
// TimingKv receives the time an event took to happen along with optional key/value data
|
|
func (n *NullEventReceiver) TimingKv(eventName string, nanoseconds int64, kvs map[string]string) {
|
|
// noop
|
|
}
|