gh-ost/go/binlog/binlog_entry.go

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/*
Copyright 2016 GitHub Inc.
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See https://github.com/github/gh-ost/blob/master/LICENSE
*/
package binlog
import (
"fmt"
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"github.com/github/gh-ost/go/mysql"
)
// BinlogEntry describes an entry in the binary log
type BinlogEntry struct {
Coordinates mysql.BinlogCoordinates
EndLogPos uint64
DmlEvent *BinlogDMLEvent
}
// NewBinlogEntry creates an empty, ready to go BinlogEntry object
func NewBinlogEntry(logFile string, logPos uint64) *BinlogEntry {
binlogEntry := &BinlogEntry{
Coordinates: mysql.BinlogCoordinates{LogFile: logFile, LogPos: int64(logPos)},
}
return binlogEntry
}
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// NewBinlogEntryAt creates an empty, ready to go BinlogEntry object
func NewBinlogEntryAt(coordinates mysql.BinlogCoordinates) *BinlogEntry {
binlogEntry := &BinlogEntry{
Coordinates: coordinates,
}
return binlogEntry
}
// Duplicate creates and returns a new binlog entry, with some of the attributes pre-assigned
func (this *BinlogEntry) Duplicate() *BinlogEntry {
binlogEntry := NewBinlogEntry(this.Coordinates.LogFile, uint64(this.Coordinates.LogPos))
binlogEntry.EndLogPos = this.EndLogPos
return binlogEntry
}
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// String() returns a string representation of this binlog entry
func (this *BinlogEntry) String() string {
return fmt.Sprintf("[BinlogEntry at %+v; dml:%+v]", this.Coordinates, this.DmlEvent)
}