adjusted automaton to accept multi-statement entries; added tests
This commit is contained in:
Shlomi Noach
parent
1768b55b3b
commit
8aa6a9750c
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@ -17,9 +17,10 @@
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package binlog
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import (
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"testing"
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"github.com/outbrain/golib/log"
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test "github.com/outbrain/golib/tests"
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"testing"
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)
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func init() {
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@ -23,17 +23,17 @@ var (
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startEntryUnknownTableRegexp = regexp.MustCompile("^### Row event for unknown table .*? at ([0-9]+)$")
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endLogPosRegexp = regexp.MustCompile("^#[0-9]{6} .*? end_log_pos ([0-9]+)")
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statementRegxp = regexp.MustCompile("### (INSERT INTO|UPDATE|DELETE FROM) `(.*?)`[.]`(.*?)`")
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tokenRegxp = regexp.MustCompile("### (WHERE|SET)$")
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)
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type BinlogEntryState string
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const (
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InvalidState BinlogEntryState = "InvalidState"
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SearchForStartPosState = "SearchForStartPosState"
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ExpectEndLogPosState = "ExpectEndLogPosState"
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SearchForStatementState = "SearchForStatementState"
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ExpectTokenState = "ExpectTokenState"
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PositionalColumnAssignmentState = "PositionalColumnAssignmentState"
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InvalidState BinlogEntryState = "InvalidState"
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SearchForStartPosOrStatementState = "SearchForStartPosOrStatementState"
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ExpectEndLogPosState = "ExpectEndLogPosState"
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ExpectTokenState = "ExpectTokenState"
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PositionalColumnAssignmentState = "PositionalColumnAssignmentState"
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)
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// MySQLBinlogReader reads binary log entries by executing the `mysqlbinlog`
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@ -72,7 +72,8 @@ func (this *MySQLBinlogReader) ReadEntries(logFile string, startPos uint64, stop
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if err != nil {
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return entries, log.Errore(err)
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}
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chunkEntries, err := parseEntries(entriesBytes)
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chunkEntries, err := parseEntries(bufio.NewScanner(bytes.NewReader(entriesBytes)))
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if err != nil {
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return entries, log.Errore(err)
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}
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@ -88,7 +89,7 @@ func (this *MySQLBinlogReader) ReadEntries(logFile string, startPos uint64, stop
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return entries, err
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}
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func searchForStartPos(scanner *bufio.Scanner, binlogEntry *BinlogEntry, previousEndLogPos uint64) (nextState BinlogEntryState, nextBinlogEntry *BinlogEntry, err error) {
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func searchForStartPosOrStatement(scanner *bufio.Scanner, binlogEntry *BinlogEntry, previousEndLogPos uint64) (nextState BinlogEntryState, nextBinlogEntry *BinlogEntry, err error) {
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onStartEntry := func(submatch []string) (BinlogEntryState, *BinlogEntry, error) {
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startLogPos, _ := strconv.ParseUint(submatch[1], 10, 64)
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@ -106,6 +107,20 @@ func searchForStartPos(scanner *bufio.Scanner, binlogEntry *BinlogEntry, previou
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return ExpectEndLogPosState, nextBinlogEntry, nil
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}
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onStatementEntry := func(submatch []string) (BinlogEntryState, *BinlogEntry, error) {
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nextBinlogEntry = binlogEntry
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if binlogEntry.LogPos != 0 && binlogEntry.StatementType != "" {
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// Current entry is already a true entry, with startpos and with statement
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nextBinlogEntry = &BinlogEntry{LogPos: binlogEntry.LogPos, EndLogPos: binlogEntry.EndLogPos}
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}
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nextBinlogEntry.StatementType = strings.Split(submatch[1], " ")[0]
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nextBinlogEntry.DatabaseName = submatch[2]
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nextBinlogEntry.TableName = submatch[3]
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return ExpectTokenState, nextBinlogEntry, nil
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}
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line := scanner.Text()
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if submatch := startEntryRegexp.FindStringSubmatch(line); len(submatch) > 1 {
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return onStartEntry(submatch)
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@ -113,53 +128,50 @@ func searchForStartPos(scanner *bufio.Scanner, binlogEntry *BinlogEntry, previou
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if submatch := startEntryUnknownTableRegexp.FindStringSubmatch(line); len(submatch) > 1 {
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return onStartEntry(submatch)
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}
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// Haven't found a start entry
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return SearchForStartPosState, binlogEntry, nil
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if submatch := statementRegxp.FindStringSubmatch(line); len(submatch) > 1 {
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return onStatementEntry(submatch)
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}
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// Haven't found a match
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return SearchForStartPosOrStatementState, binlogEntry, nil
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}
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func expectEndLogPos(scanner *bufio.Scanner, binlogEntry *BinlogEntry) (nextState BinlogEntryState, err error) {
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line := scanner.Text()
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submatch := endLogPosRegexp.FindStringSubmatch(line)
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if len(submatch) <= 1 {
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return InvalidState, fmt.Errorf("Expected to find end_log_pos following pos %+v", binlogEntry.LogPos)
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if len(submatch) > 1 {
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binlogEntry.EndLogPos, _ = strconv.ParseUint(submatch[1], 10, 64)
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return SearchForStartPosOrStatementState, nil
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}
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binlogEntry.EndLogPos, _ = strconv.ParseUint(submatch[1], 10, 64)
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return SearchForStatementState, nil
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return InvalidState, fmt.Errorf("Expected to find end_log_pos following pos %+v", binlogEntry.LogPos)
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}
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func searchForStatement(scanner *bufio.Scanner, binlogEntry *BinlogEntry) (nextState BinlogEntryState, err error) {
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func expectToken(scanner *bufio.Scanner, binlogEntry *BinlogEntry) (nextState BinlogEntryState, err error) {
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line := scanner.Text()
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if submatch := statementRegxp.FindStringSubmatch(line); len(submatch) > 1 {
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binlogEntry.StatementType = strings.Split(submatch[1], " ")[0]
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binlogEntry.DatabaseName = submatch[2]
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binlogEntry.TableName = submatch[3]
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return SearchForStartPosState, nil
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if submatch := tokenRegxp.FindStringSubmatch(line); len(submatch) > 1 {
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return SearchForStartPosOrStatementState, nil
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}
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return SearchForStatementState, nil
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return InvalidState, fmt.Errorf("Expected to find token following pos %+v", binlogEntry.LogPos)
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}
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func parseEntries(entriesBytes []byte) (entries [](*BinlogEntry), err error) {
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scanner := bufio.NewScanner(bytes.NewReader(entriesBytes))
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func parseEntries(scanner *bufio.Scanner) (entries [](*BinlogEntry), err error) {
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binlogEntry := &BinlogEntry{}
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var state BinlogEntryState = SearchForStartPosState
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var state BinlogEntryState = SearchForStartPosOrStatementState
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var endLogPos uint64
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appendBinlogEntry := func() {
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entries = append(entries, binlogEntry)
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if binlogEntry.StatementType != "" {
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entries = append(entries, binlogEntry)
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log.Debugf("entry: %+v", *binlogEntry)
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//fmt.Println(fmt.Sprintf("%s `%s`.`%s`", binlogEntry.StatementType, binlogEntry.DatabaseName, binlogEntry.TableName))
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}
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}
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for scanner.Scan() {
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switch state {
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case SearchForStartPosState:
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case SearchForStartPosOrStatementState:
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{
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var nextBinlogEntry *BinlogEntry
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state, nextBinlogEntry, err = searchForStartPos(scanner, binlogEntry, endLogPos)
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state, nextBinlogEntry, err = searchForStartPosOrStatement(scanner, binlogEntry, endLogPos)
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if nextBinlogEntry != binlogEntry {
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appendBinlogEntry()
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binlogEntry = nextBinlogEntry
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@ -169,9 +181,9 @@ func parseEntries(entriesBytes []byte) (entries [](*BinlogEntry), err error) {
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{
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state, err = expectEndLogPos(scanner, binlogEntry)
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}
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case SearchForStatementState:
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case ExpectTokenState:
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{
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state, err = searchForStatement(scanner, binlogEntry)
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state, err = expectToken(scanner, binlogEntry)
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}
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default:
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{
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61
go/binlog/mysqlbinlog_reader_test.go
Normal file
61
go/binlog/mysqlbinlog_reader_test.go
Normal file
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@ -0,0 +1,61 @@
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/*
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Copyright 2014 Outbrain Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package binlog
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import (
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"bufio"
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"os"
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"testing"
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"github.com/outbrain/golib/log"
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test "github.com/outbrain/golib/tests"
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)
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func init() {
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log.SetLevel(log.ERROR)
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}
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func TestRBRSample0(t *testing.T) {
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testFile, err := os.Open("testdata/rbr-sample-0.txt")
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test.S(t).ExpectNil(err)
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defer testFile.Close()
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scanner := bufio.NewScanner(testFile)
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entries, err := parseEntries(scanner)
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test.S(t).ExpectNil(err)
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test.S(t).ExpectEquals(len(entries), 17)
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test.S(t).ExpectEquals(entries[0].DatabaseName, "test")
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test.S(t).ExpectEquals(entries[0].TableName, "samplet")
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test.S(t).ExpectEquals(entries[0].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[1].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[2].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[3].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[4].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[5].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[6].StatementType, "UPDATE")
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test.S(t).ExpectEquals(entries[7].StatementType, "DELETE")
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test.S(t).ExpectEquals(entries[8].StatementType, "UPDATE")
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test.S(t).ExpectEquals(entries[9].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[10].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[11].StatementType, "DELETE")
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test.S(t).ExpectEquals(entries[12].StatementType, "DELETE")
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test.S(t).ExpectEquals(entries[13].StatementType, "INSERT")
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test.S(t).ExpectEquals(entries[14].StatementType, "UPDATE")
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test.S(t).ExpectEquals(entries[15].StatementType, "DELETE")
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test.S(t).ExpectEquals(entries[16].StatementType, "INSERT")
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}
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244
go/binlog/testdata/rbr-sample-0.txt
vendored
Normal file
244
go/binlog/testdata/rbr-sample-0.txt
vendored
Normal file
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@ -0,0 +1,244 @@
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
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/*!40019 SET @@session.max_insert_delayed_threads=0*/;
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/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
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DELIMITER /*!*/;
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# at 4
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#160324 11:06:59 server id 104 end_log_pos 120 CRC32 0x059174d8 Start: binlog v 4, server v 5.6.28-log created 160324 11:06:59
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# at 120
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#160324 11:09:53 server id 1 end_log_pos 313 CRC32 0x511efdf1 Query thread_id=7940 exec_time=0 error_code=0
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use `test`/*!*/;
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SET TIMESTAMP=1458814193/*!*/;
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SET @@session.pseudo_thread_id=7940/*!*/;
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SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
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SET @@session.sql_mode=1073741824/*!*/;
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SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
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/*!\C utf8 *//*!*/;
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SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=8/*!*/;
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SET @@session.lc_time_names=0/*!*/;
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SET @@session.collation_database=DEFAULT/*!*/;
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create table samplet(id int primary key, license int, name varchar(64), unique key license_uidx(license)) engine=innodb
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/*!*/;
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# at 313
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#160324 11:10:13 server id 1 end_log_pos 385 CRC32 0x6b95100a Query thread_id=7940 exec_time=0 error_code=0
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SET TIMESTAMP=1458814213/*!*/;
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BEGIN
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/*!*/;
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# at 385
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#160324 11:10:13 server id 1 end_log_pos 439 CRC32 0xfa97ad69 Table_map: `test`.`samplet` mapped to number 72
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# at 439
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#160324 11:10:13 server id 1 end_log_pos 485 CRC32 0xae356826 Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=1
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### @2=1
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### @3='a'
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# at 485
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#160324 11:10:13 server id 1 end_log_pos 516 CRC32 0xf60389e3 Xid = 49802
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COMMIT/*!*/;
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# at 516
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#160324 11:10:35 server id 1 end_log_pos 588 CRC32 0x1a8730ad Query thread_id=7940 exec_time=0 error_code=0
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SET TIMESTAMP=1458814235/*!*/;
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BEGIN
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/*!*/;
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# at 588
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#160324 11:10:35 server id 1 end_log_pos 642 CRC32 0xac564207 Table_map: `test`.`samplet` mapped to number 72
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# at 642
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#160324 11:10:35 server id 1 end_log_pos 713 CRC32 0x3020ee9e Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=2
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### @2=2
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### @3='extended'
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=3
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### @2=3
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### @3='extended'
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# at 713
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#160324 11:10:35 server id 1 end_log_pos 744 CRC32 0x341f0c1d Xid = 49848
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COMMIT/*!*/;
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# at 744
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#160324 11:10:47 server id 1 end_log_pos 816 CRC32 0x2454c8aa Query thread_id=7940 exec_time=14 error_code=0
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SET TIMESTAMP=1458814247/*!*/;
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BEGIN
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/*!*/;
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# at 816
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#160324 11:10:47 server id 1 end_log_pos 870 CRC32 0x92018566 Table_map: `test`.`samplet` mapped to number 72
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# at 870
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#160324 11:10:47 server id 1 end_log_pos 926 CRC32 0x5b882310 Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=4
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### @2=4
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### @3='transaction'
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# at 926
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#160324 11:10:54 server id 1 end_log_pos 980 CRC32 0x374b624b Table_map: `test`.`samplet` mapped to number 72
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# at 980
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#160324 11:10:54 server id 1 end_log_pos 1036 CRC32 0xfff6a2b9 Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=5
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### @2=5
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### @3='transaction'
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# at 1036
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#160324 11:10:59 server id 1 end_log_pos 1090 CRC32 0x37e19690 Table_map: `test`.`samplet` mapped to number 72
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# at 1090
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#160324 11:10:59 server id 1 end_log_pos 1146 CRC32 0x58a01053 Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=6
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### @2=6
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### @3='transaction'
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# at 1146
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#160324 11:10:59 server id 1 end_log_pos 1177 CRC32 0xdd5de027 Xid = 49894
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COMMIT/*!*/;
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# at 1177
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#160324 11:11:16 server id 1 end_log_pos 1249 CRC32 0x5c4a609b Query thread_id=7940 exec_time=0 error_code=0
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SET TIMESTAMP=1458814276/*!*/;
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BEGIN
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/*!*/;
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# at 1249
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#160324 11:11:16 server id 1 end_log_pos 1303 CRC32 0x9d3c756b Table_map: `test`.`samplet` mapped to number 72
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# at 1303
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#160324 11:11:16 server id 1 end_log_pos 1352 CRC32 0x9b0d2ff4 Update_rows: table id 72 flags: STMT_END_F
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### UPDATE `test`.`samplet`
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### WHERE
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### @1=5
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### SET
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### @3='update'
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# at 1352
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#160324 11:11:16 server id 1 end_log_pos 1383 CRC32 0x8e051bed Xid = 49931
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COMMIT/*!*/;
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# at 1383
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#160324 11:11:44 server id 1 end_log_pos 1455 CRC32 0xe9744e83 Query thread_id=7940 exec_time=0 error_code=0
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SET TIMESTAMP=1458814304/*!*/;
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BEGIN
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/*!*/;
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# at 1455
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#160324 11:11:44 server id 1 end_log_pos 1509 CRC32 0x34672cb1 Table_map: `test`.`samplet` mapped to number 72
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# at 1509
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#160324 11:11:44 server id 1 end_log_pos 1549 CRC32 0x4383e9ee Delete_rows: table id 72
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# at 1549
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#160324 11:11:44 server id 1 end_log_pos 1612 CRC32 0x899eb398 Update_rows: table id 72 flags: STMT_END_F
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### DELETE FROM `test`.`samplet`
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### WHERE
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### @1=2
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### UPDATE `test`.`samplet`
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### WHERE
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### @1=4
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### SET
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### @1=2
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### @2=4
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### @3='replaced 2,4'
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# at 1612
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#160324 11:11:44 server id 1 end_log_pos 1643 CRC32 0x037a8fe1 Xid = 49977
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COMMIT/*!*/;
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# at 1643
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#160324 11:11:54 server id 1 end_log_pos 1715 CRC32 0xb02520cd Query thread_id=7940 exec_time=0 error_code=0
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SET TIMESTAMP=1458814314/*!*/;
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BEGIN
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/*!*/;
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# at 1715
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#160324 11:11:54 server id 1 end_log_pos 1769 CRC32 0xcbcf4323 Table_map: `test`.`samplet` mapped to number 72
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# at 1769
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#160324 11:11:54 server id 1 end_log_pos 1815 CRC32 0x4d52b057 Write_rows: table id 72 flags: STMT_END_F
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### INSERT INTO `test`.`samplet`
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### SET
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### @1=7
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### @2=7
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### @3='7'
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# at 1815
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#160324 11:11:54 server id 1 end_log_pos 1846 CRC32 0x5289b6a4 Xid = 50001
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COMMIT/*!*/;
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# at 1846
|
||||
#160324 11:11:59 server id 1 end_log_pos 1918 CRC32 0x1758ab97 Query thread_id=7940 exec_time=0 error_code=0
|
||||
SET TIMESTAMP=1458814319/*!*/;
|
||||
BEGIN
|
||||
/*!*/;
|
||||
# at 1918
|
||||
#160324 11:11:59 server id 1 end_log_pos 1972 CRC32 0xa4602796 Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 1972
|
||||
#160324 11:11:59 server id 1 end_log_pos 2018 CRC32 0x6a6eb0c9 Write_rows: table id 72 flags: STMT_END_F
|
||||
### INSERT INTO `test`.`samplet`
|
||||
### SET
|
||||
### @1=8
|
||||
### @2=8
|
||||
### @3='8'
|
||||
# at 2018
|
||||
#160324 11:11:59 server id 1 end_log_pos 2049 CRC32 0x6d0fef4d Xid = 50014
|
||||
COMMIT/*!*/;
|
||||
# at 2049
|
||||
#160324 11:12:12 server id 1 end_log_pos 2121 CRC32 0x6cd5da13 Query thread_id=7940 exec_time=0 error_code=0
|
||||
SET TIMESTAMP=1458814332/*!*/;
|
||||
BEGIN
|
||||
/*!*/;
|
||||
# at 2121
|
||||
#160324 11:12:12 server id 1 end_log_pos 2175 CRC32 0x8339241f Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 2175
|
||||
#160324 11:12:12 server id 1 end_log_pos 2220 CRC32 0x669385e1 Delete_rows: table id 72 flags: STMT_END_F
|
||||
### DELETE FROM `test`.`samplet`
|
||||
### WHERE
|
||||
### @1=7
|
||||
### DELETE FROM `test`.`samplet`
|
||||
### WHERE
|
||||
### @1=8
|
||||
# at 2220
|
||||
#160324 11:12:12 server id 1 end_log_pos 2251 CRC32 0xba81d2b0 Xid = 50038
|
||||
COMMIT/*!*/;
|
||||
# at 2251
|
||||
#160324 11:12:20 server id 1 end_log_pos 2323 CRC32 0x4c58be8c Query thread_id=7940 exec_time=0 error_code=0
|
||||
SET TIMESTAMP=1458814340/*!*/;
|
||||
BEGIN
|
||||
/*!*/;
|
||||
# at 2323
|
||||
#160324 11:12:20 server id 1 end_log_pos 2377 CRC32 0x9eb23ab9 Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 2377
|
||||
#160324 11:12:20 server id 1 end_log_pos 2423 CRC32 0xac8116ec Write_rows: table id 72 flags: STMT_END_F
|
||||
### INSERT INTO `test`.`samplet`
|
||||
### SET
|
||||
### @1=9
|
||||
### @2=9
|
||||
### @3='9'
|
||||
# at 2423
|
||||
#160324 11:12:20 server id 1 end_log_pos 2454 CRC32 0x5ce77ad6 Xid = 50051
|
||||
COMMIT/*!*/;
|
||||
# at 2454
|
||||
#160324 11:12:50 server id 1 end_log_pos 2526 CRC32 0xed19acbd Query thread_id=7940 exec_time=26 error_code=0
|
||||
SET TIMESTAMP=1458814370/*!*/;
|
||||
BEGIN
|
||||
/*!*/;
|
||||
# at 2526
|
||||
#160324 11:12:50 server id 1 end_log_pos 2580 CRC32 0x0bf6b98f Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 2580
|
||||
#160324 11:12:50 server id 1 end_log_pos 2631 CRC32 0x263c4579 Update_rows: table id 72 flags: STMT_END_F
|
||||
### UPDATE `test`.`samplet`
|
||||
### WHERE
|
||||
### @1=9
|
||||
### SET
|
||||
### @3='update 9'
|
||||
# at 2631
|
||||
#160324 11:13:00 server id 1 end_log_pos 2685 CRC32 0x94b24c8b Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 2685
|
||||
#160324 11:13:00 server id 1 end_log_pos 2725 CRC32 0xca43fe3a Delete_rows: table id 72 flags: STMT_END_F
|
||||
### DELETE FROM `test`.`samplet`
|
||||
### WHERE
|
||||
### @1=3
|
||||
# at 2725
|
||||
#160324 11:13:14 server id 1 end_log_pos 2779 CRC32 0xc36088a2 Table_map: `test`.`samplet` mapped to number 72
|
||||
# at 2779
|
||||
#160324 11:13:14 server id 1 end_log_pos 2826 CRC32 0x98fc9dea Write_rows: table id 72 flags: STMT_END_F
|
||||
### INSERT INTO `test`.`samplet`
|
||||
### SET
|
||||
### @1=10
|
||||
### @2=10
|
||||
### @3='10'
|
||||
# at 2826
|
||||
#160324 11:13:14 server id 1 end_log_pos 2857 CRC32 0x729c371f Xid = 50163
|
||||
COMMIT/*!*/;
|
||||
# at 2857
|
||||
#160324 11:13:31 server id 104 end_log_pos 2904 CRC32 0x38531c7d Rotate to mysql-bin.000053 pos: 4
|
||||
DELIMITER ;
|
||||
# End of log file
|
||||
ROLLBACK /* added by mysqlbinlog */;
|
||||
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
|
||||
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
|
||||
Loading…
Reference in New Issue
Block a user