support binlog compression

parse.go

@@ -21,6 +21,7 @@ type TxDetail struct {
 	Db              string
 	Table           string
 	SqlType         string
+	CompressionType string
 	Rows            [][]interface{}
 }
 
@@ -80,13 +81,7 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 	var (
 		err      error
 		n        int64
-		db       string = ""
-		tb       string = ""
-		sql      string = ""
-		sqlType  string = ""
-		rowCnt   uint32 = 0
 		tbMapPos uint32 = 0
-		rows     [][]interface{}
 	)
 	var tx Transaction
 	currentGtid := ""
@@ -157,9 +152,10 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 		//binEvent := &replication.BinlogEvent{RawData: rawData, Header: h, Event: e}
 		binEvent := &replication.BinlogEvent{Header: h, Event: e} // we donnot need raw data
 
-		db, tb, sqlType, sql, rowCnt, rows = GetDbTbAndQueryAndRowCntFromBinevent(binEvent)
+		evs := ParseBinlogEvent(binEvent)
+		for _, ev := range evs {
 			startPos := 0
-		if sqlType == "query" || sqlType == "gtid" {
+			if ev.Type == "query" || ev.Type == "gtid" {
 				startPos = int(h.LogPos - h.EventSize)
 				//fmt.Println(h.Timestamp, h.LogPos-h.EventSize, h.LogPos, db, tb, "sql="+sql, rowCnt, sqlType)
 				//	cfg.StatChan <- BinEventStats{Timestamp: h.Timestamp, Binlog: *binlog, StartPos: h.LogPos - h.EventSize, StopPos: h.LogPos,
@@ -170,7 +166,7 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 				//	cfg.StatChan <- BinEventStats{Timestamp: h.Timestamp, Binlog: *binlog, StartPos: tbMapPos, StopPos: h.LogPos,
 				//	Database: db, Table: tb, QuerySql: sql, RowCnt: rowCnt, QueryType: sqlType}
 			}
-		switch sqlType {
+			switch ev.Type {
 			case "gtid":
 				if currentGtid != "" {
 					idx := 0
@@ -187,9 +183,9 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 						f(tx)
 					}
 				}
-			currentGtid = sql
+				currentGtid = ev.Data
 				tx = Transaction{
-				GTID:      sql,
+					GTID:      ev.Data,
 					StartPos:  startPos,
 					Timestamp: int64(h.Timestamp),
 					Time:      time.Unix(int64(h.Timestamp), 0),
@@ -199,58 +195,62 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 				continue
 			case "rowsquery":
 				tx.EndPos = int(h.LogPos)
-			tx.sqlOrigin = append(tx.sqlOrigin, sql)
+				tx.sqlOrigin = append(tx.sqlOrigin, ev.Data)
 			default:
 				tx.EndPos = int(h.LogPos)
 				tx.Txs = append(tx.Txs, TxDetail{
 					StartPos:        startPos,
 					EndPos:          int(h.LogPos),
-				Db:        db,
+					Db:              ev.DB,
-				Table:     tb,
+					Table:           ev.TB,
-				Sql:       sql,
+					Sql:             ev.Data,
-				SqlType:   sqlType,
+					SqlType:         ev.Type,
-				Rows:      rows,
+					Rows:            ev.Rows,
-				RowCount:  int(rowCnt),
+					RowCount:        int(ev.RowCnt),
 					Timestamp:       int64(h.Timestamp),
 					Time:            time.Unix(int64(h.Timestamp), 0),
+					CompressionType: ev.CompressionType,
 				})
 			}
 		}
+	}
 
 }
 
-func GetDbTbAndQueryAndRowCntFromBinevent(ev *replication.BinlogEvent) (string, string, string, string, uint32, [][]interface{}) {
+type BinlogEvent struct {
-	var (
+	Type            string
-		db      string = ""
+	DB              string
-		tb      string = ""
+	TB              string
-		sql     string = ""
+	Data            string
-		sqlType string = ""
+	RowCnt          uint32
-		rowCnt  uint32 = 0
+	Rows            [][]interface{}
-		rows    [][]interface{}
+	CompressionType string
-	)
+}
 
+func ParseBinlogEvent(ev *replication.BinlogEvent) []BinlogEvent {
+	var res []BinlogEvent
+	var sig BinlogEvent
 	switch ev.Header.EventType {
 	case replication.ANONYMOUS_GTID_EVENT:
 		//ge := ev.Event.(*replication.GTIDEvent)
-		sql = "anonymous-gtid-event:1"
+		sig.Data = "anonymous-gtid-event:1"
-		sqlType = "gtid"
+		sig.Type = "gtid"
 	case replication.WRITE_ROWS_EVENTv1,
 		replication.WRITE_ROWS_EVENTv2:
-
 		wrEvent := ev.Event.(*replication.RowsEvent)
-		db = string(wrEvent.Table.Schema)
+		sig.TB = string(wrEvent.Table.Schema)
-		tb = string(wrEvent.Table.Table)
+		sig.TB = string(wrEvent.Table.Table)
-		sqlType = "insert"
+		sig.Type = "insert"
-		rowCnt = uint32(len(wrEvent.Rows))
+		sig.RowCnt = uint32(len(wrEvent.Rows))
-		rows = wrEvent.Rows
+		sig.Rows = wrEvent.Rows
 	case replication.UPDATE_ROWS_EVENTv1,
 		replication.UPDATE_ROWS_EVENTv2:
 		wrEvent := ev.Event.(*replication.RowsEvent)
-		db = string(wrEvent.Table.Schema)
+		sig.DB = string(wrEvent.Table.Schema)
-		tb = string(wrEvent.Table.Table)
+		sig.DB = string(wrEvent.Table.Table)
-		sqlType = "update"
+		sig.Type = "update"
-		rowCnt = uint32(len(wrEvent.Rows)) / 2
+		sig.RowCnt = uint32(len(wrEvent.Rows)) / 2
-		rows = wrEvent.Rows
+		sig.Rows = wrEvent.Rows
 	case replication.DELETE_ROWS_EVENTv1,
 		replication.DELETE_ROWS_EVENTv2:
 
@@ -258,41 +258,54 @@ func GetDbTbAndQueryAndRowCntFromBinevent(ev *replication.BinlogEvent) (string,
 		//replication.TABLE_MAP_EVENT:
 
 		wrEvent := ev.Event.(*replication.RowsEvent)
-		db = string(wrEvent.Table.Schema)
+		sig.DB = string(wrEvent.Table.Schema)
-		tb = string(wrEvent.Table.Table)
+		sig.TB = string(wrEvent.Table.Table)
-		sqlType = "delete"
+		sig.Type = "delete"
-		rowCnt = uint32(len(wrEvent.Rows))
+		sig.RowCnt = uint32(len(wrEvent.Rows))
-		rows = wrEvent.Rows
+		sig.Rows = wrEvent.Rows
 	case replication.ROWS_QUERY_EVENT:
 		queryEvent := ev.Event.(*replication.RowsQueryEvent)
-		sql = string(queryEvent.Query)
+		sig.Data = string(queryEvent.Query)
-		sqlType = "rowsquery"
+		sig.Type = "rowsquery"
 	case replication.QUERY_EVENT:
 		queryEvent := ev.Event.(*replication.QueryEvent)
-		db = string(queryEvent.Schema)
+		sig.DB = string(queryEvent.Schema)
-		sql = string(queryEvent.Query)
+		sig.Data = string(queryEvent.Query)
-		sqlType = "query"
+		sig.Type = "query"
 
 	case replication.MARIADB_GTID_EVENT:
 		// For global transaction ID, used to start a new transaction event group, instead of the old BEGIN query event, and also to mark stand-alone (ddl).
 		//https://mariadb.com/kb/en/library/gtid_event/
-		sql = "begin"
+		sig.Data = "begin"
-		sqlType = "query"
+		sig.Type = "query"
 
 	case replication.XID_EVENT:
 		// XID_EVENT represents commit。rollback transaction not in binlog
-		sql = "commit"
+		sig.Data = "commit"
-		sqlType = "query"
+		sig.Type = "query"
 	case replication.GTID_EVENT:
 		ge := ev.Event.(*replication.GTIDEvent)
 		gid, err := gtid.Parse(fmt.Sprintf("%s:%d", bytesToUuid(ge.SID), ge.GNO))
 		if err == nil {
-			sql = gid.String()
+			sig.Data = gid.String()
 		}
-		sqlType = "gtid"
+		sig.Type = "gtid"
+	case replication.TRANSACTION_PAYLOAD_EVENT:
+		ge := ev.Event.(*replication.TransactionPayloadEvent)
+		for _, val := range ge.Events {
+			res = append(res, ParseBinlogEvent(val)...)
 		}
-	return db, tb, sqlType, sql, rowCnt, rows
+		for idx := range res {
-
+			if ge.CompressionType == 0 {
+				res[idx].CompressionType = "ZSTD"
+			} else if ge.CompressionType != 255 {
+				res[idx].CompressionType = "UNKNOWN"
+			}
+		}
+		return res
+	}
+	res = append(res, sig)
+	return res
 }
 
 type BinlogFilter struct {
@@ -304,6 +317,7 @@ type BinlogFilter struct {
 	EndDate      time.Time
 	BigThan      int
 	SmallThan    int
+	OnlyShowGtid bool
 }
 
 func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter BinlogFilter, fn func(Transaction)) error {
@@ -325,14 +339,8 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 	// process: 0, continue: 1, break: 2, EOF: 3
 	var (
 		n            int64
-		db           string = ""
-		tb           string = ""
-		sql          string = ""
-		sqlType      string = ""
-		rowCnt       uint32 = 0
 		tbMapPos     uint32 = 0
 		skipTillNext bool   = false
-		rows         [][]interface{}
 	)
 	var tx Transaction
 
@@ -398,6 +406,9 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 		if skipTillNext && h.EventType != replication.GTID_EVENT {
 			continue
 		}
+		if filter.OnlyShowGtid && h.EventType != replication.GTID_EVENT {
+			continue
+		}
 		//h.Dump(os.Stdout)
 
 		data := buf.Bytes()
@@ -426,9 +437,10 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 		//binEvent := &replication.BinlogEvent{RawData: rawData, Header: h, Event: e}
 		binEvent := &replication.BinlogEvent{Header: h, Event: e} // we donnot need raw data
 
-		db, tb, sqlType, sql, rowCnt, rows = GetDbTbAndQueryAndRowCntFromBinevent(binEvent)
+		evs := ParseBinlogEvent(binEvent)
+		for _, ev := range evs {
 			startPos := 0
-		if sqlType == "query" || sqlType == "gtid" {
+			if ev.Type == "query" || ev.Type == "gtid" {
 				startPos = int(h.LogPos - h.EventSize)
 				//fmt.Println(h.Timestamp, h.LogPos-h.EventSize, h.LogPos, db, tb, "sql="+sql, rowCnt, sqlType)
 				//	cfg.StatChan <- BinEventStats{Timestamp: h.Timestamp, Binlog: *binlog, StartPos: h.LogPos - h.EventSize, StopPos: h.LogPos,
@@ -439,7 +451,7 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 				//	cfg.StatChan <- BinEventStats{Timestamp: h.Timestamp, Binlog: *binlog, StartPos: tbMapPos, StopPos: h.LogPos,
 				//	Database: db, Table: tb, QuerySql: sql, RowCnt: rowCnt, QueryType: sqlType}
 			}
-		switch sqlType {
+			switch ev.Type {
 			case "gtid":
 				if skipTillNext {
 					skipTillNext = false
@@ -457,23 +469,23 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 					tx.Size = tx.EndPos - tx.StartPos
 					callFn(tx)
 				}
-			currentGtid = sql
+				currentGtid = ev.Data
 				if inGtid != nil {
-				if c, _ := inGtid.Contain(sql); !c {
+					if c, _ := inGtid.Contain(ev.Data); !c {
 						currentGtid = ""
 						skipTillNext = true
 						continue
 					}
 				}
 				if exGtid != nil {
-				if c, _ := exGtid.Contain(sql); c {
+					if c, _ := exGtid.Contain(ev.Data); c {
 						currentGtid = ""
 						skipTillNext = true
 						continue
 					}
 				}
 				tx = Transaction{
-				GTID:      sql,
+					GTID:      ev.Data,
 					StartPos:  startPos,
 					Timestamp: int64(h.Timestamp),
 					Time:      time.Unix(int64(h.Timestamp), 0),
@@ -483,23 +495,25 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 				continue
 			case "rowsquery":
 				tx.EndPos = int(h.LogPos)
-			tx.sqlOrigin = append(tx.sqlOrigin, sql)
+				tx.sqlOrigin = append(tx.sqlOrigin, ev.Data)
 			default:
 				tx.EndPos = int(h.LogPos)
 				tx.Txs = append(tx.Txs, TxDetail{
 					StartPos:        startPos,
 					EndPos:          int(h.LogPos),
-				Db:        db,
+					Db:              ev.DB,
-				Table:     tb,
+					Table:           ev.TB,
-				Sql:       sql,
+					Sql:             ev.Data,
-				SqlType:   sqlType,
+					SqlType:         ev.Type,
-				Rows:      rows,
+					Rows:            ev.Rows,
-				RowCount:  int(rowCnt),
+					RowCount:        int(ev.RowCnt),
 					Timestamp:       int64(h.Timestamp),
 					Time:            time.Unix(int64(h.Timestamp), 0),
+					CompressionType: ev.CompressionType,
 				})
 			}
 		}
+	}
 }
 
 func ParseBinlogWithFilter(path string, pos int64, filter BinlogFilter, fx func(Transaction)) error {

parse_test.go

@@ -2,6 +2,7 @@ package binlog
 
 import (
 	"fmt"
+	"os"
 	"testing"
 	"time"
 )
@@ -26,3 +27,15 @@ func TestParseFilter(t *testing.T) {
 		fmt.Println(transaction)
 	})
 }
+
+func TestParseExternal(t *testing.T) {
+	file := `C:\mysql-bin.000001`
+	if _, err := os.Stat(file); err != nil {
+		return
+	}
+	ParseBinlogWithFilter(file, 0, BinlogFilter{
+		OnlyShowGtid: true,
+	}, func(transaction Transaction) {
+		fmt.Println(transaction)
+	})
+}