30 lines
843 B
Go
30 lines
843 B
Go
package binlog
|
|
|
|
import "github.com/localhots/bocadillo/tools"
|
|
|
|
// Position is a pair of log file name and a binary offset in it that is used to
|
|
// represent the beginning of the event description.
|
|
type Position struct {
|
|
File string
|
|
Offset uint64
|
|
}
|
|
|
|
// RotateEvent is written at the end of the file that points to the next file in
|
|
// the squence. It is written when a binary log file exceeds a size limit.
|
|
type RotateEvent struct {
|
|
NextFile Position
|
|
}
|
|
|
|
// Decode decodes given buffer into a rotate event.
|
|
// Spec: https://dev.mysql.com/doc/internals/en/rotate-event.html
|
|
func (e *RotateEvent) Decode(connBuff []byte, fd FormatDescription) error {
|
|
buf := tools.NewBuffer(connBuff)
|
|
if fd.Version > 1 {
|
|
e.NextFile.Offset = buf.ReadUint64()
|
|
} else {
|
|
e.NextFile.Offset = 4
|
|
}
|
|
e.NextFile.File = string(buf.ReadStringEOF())
|
|
return nil
|
|
}
|