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55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
2 years ago
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package binlog
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import (
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"b612.me/mysql/gtid"
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"fmt"
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"io/ioutil"
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"path/filepath"
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"strings"
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)
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func GetUnexecutedBinlogFilesByGtid(binlogDir string, binlogBaseName string, executedGtidDesc string, includeEventBeforeFirst bool) (
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ret []string, err error) {
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files, err := ioutil.ReadDir(binlogDir)
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if nil != err {
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return nil, err
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}
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var binlogFiles []string
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for _, file := range files {
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if strings.HasPrefix(file.Name(), binlogBaseName+".") && binlogFileSuffixPattern.MatchString(file.Name()) {
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binlogFiles = append(binlogFiles, file.Name())
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}
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}
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if 0 == len(binlogFiles) {
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return make([]string, 0), nil
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}
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executedGtid, err := gtid.Parse(executedGtidDesc)
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if nil != err {
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return nil, err
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}
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for i := len(binlogFiles) - 1; i >= 0; i-- {
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binlogFile := binlogFiles[i]
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previousGtids, err := GetPreviousGtids(filepath.Join(binlogDir, binlogFile))
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if nil != err {
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return nil, err
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}
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contain, err := executedGtid.Contain(previousGtids)
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if nil != err {
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return nil, err
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}
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eql, err := executedGtid.Equal(previousGtids)
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if nil != err {
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return nil, err
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}
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if contain && !(includeEventBeforeFirst && eql && "" != executedGtidDesc) {
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for j := i; j < len(binlogFiles); j++ {
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ret = append(ret, binlogFiles[j])
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}
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return ret, nil
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}
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}
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return nil, fmt.Errorf("Found unexecuted gtid comparing with previousGtids of even first binlog")
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}
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