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Fix NextGTID issure #29

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Fix NextGTID issure #29

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35 changes: 34 additions & 1 deletion go/inst/instance.go
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Original file line number Diff line number Diff line change
Expand Up @@ -374,6 +374,39 @@ func (this *Instance) UsingGTID() bool {
return this.UsingOracleGTID || this.UsingMariaDBGTID
}

// getExecutedGTIDsFromMaster returns the executed (Oracle) GTID based current master-uuid value from slave status
/*
Master_UUID: 72dbb469-82d1-11ee-b9bc-0202ac181657
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Replica has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 5e2fa204-eedc-11ed-9cf0-0202ac18180a:23038810-23654750,
72dbb469-82d1-11ee-b9bc-0202ac181657:1-3595545
Executed_Gtid_Set: 5e2fa204-eedc-11ed-9cf0-0202ac18180a:1-23654750,
72dbb469-82d1-11ee-b9bc-0202ac181657:1-3595545,
76dabae4-eedd-11ed-8a9b-0202ac18187d:1,
f7ad2759-82c9-11ee-bc83-0202ac181657:1
Auto_Position: 1

getExecutedGTIDsFromMaster will return 72dbb469-82d1-11ee-b9bc-0202ac181657:1-3595545
*/
func (this *Instance) getExecutedGTIDsFromMaster() string {
GTIDSet := strings.Split(this.ExecutedGtidSet,",")
for _, GTID := range GTIDSet{
if strings.Contains(GTID,this.MasterUUID){
return GTID
}
}
return ""
}

// NextGTID returns the next (Oracle) GTID to be executed. Useful for skipping queries
func (this *Instance) NextGTID() (string, error) {
if this.ExecutedGtidSet == "" {
Expand All @@ -389,7 +422,7 @@ func (this *Instance) NextGTID() (string, error) {
return tokens[len(tokens)-1]
}
// executed GTID set: 4f6d62ed-df65-11e3-b395-60672090eb04:1,b9b4712a-df64-11e3-b391-60672090eb04:1-6
executedGTIDsFromMaster := lastToken(this.ExecutedGtidSet, ",")
executedGTIDsFromMaster := this.getExecutedGTIDsFromMaster()
// executedGTIDsFromMaster: b9b4712a-df64-11e3-b391-60672090eb04:1-6
executedRange := lastToken(executedGTIDsFromMaster, ":")
// executedRange: 1-6
Expand Down