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