forked from go-mysql-org/go-mysql
/
handler.go
36 lines (31 loc) · 1.33 KB
/
handler.go
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package canal
import (
"github.com/siddontang/go-mysql/mysql"
"github.com/siddontang/go-mysql/replication"
)
type EventHandler interface {
OnRotate(roateEvent *replication.RotateEvent) error
OnDDL(nextPos mysql.Position, queryEvent *replication.QueryEvent) error
OnRow(e *RowsEvent) error
OnXID(nextPos mysql.Position) error
OnGTID(gtid mysql.GTIDSet) error
// OnPosSynced Use your own way to sync position. When force is true, sync position immediately.
OnPosSynced(pos mysql.Position, force bool) error
String() string
}
type DummyEventHandler struct {
}
func (h *DummyEventHandler) OnRotate(*replication.RotateEvent) error { return nil }
func (h *DummyEventHandler) OnDDL(mysql.Position, *replication.QueryEvent) error {
return nil
}
func (h *DummyEventHandler) OnRow(*RowsEvent) error { return nil }
func (h *DummyEventHandler) OnXID(mysql.Position) error { return nil }
func (h *DummyEventHandler) OnGTID(mysql.GTIDSet) error { return nil }
func (h *DummyEventHandler) OnPosSynced(mysql.Position, bool) error { return nil }
func (h *DummyEventHandler) String() string { return "DummyEventHandler" }
// `SetEventHandler` registers the sync handler, you must register your
// own handler before starting Canal.
func (c *Canal) SetEventHandler(h EventHandler) {
c.eventHandler = h
}