update

parse.go

@@ -41,10 +41,10 @@ func (t Transaction) GetSqlOrigin() []string {
 	return t.sqlOrigin
 }
 
-func ParseBinlogFile(path string, fx func(transaction Transaction)) error {
+func ParseBinlogFile(path string, fx func(transaction Transaction) bool) error {
 	return parseOneBinlog(path, fx)
 }
-func parseOneBinlog(path string, fx func(Transaction)) error {
+func parseOneBinlog(path string, fx func(Transaction) bool) error {
 	if !staros.Exists(path) {
 		return os.ErrNotExist
 	}
@@ -73,7 +73,7 @@ func parseOneBinlog(path string, fx func(Transaction)) error {
 	return parseBinlogDetail(f, fx)
 }
 
-func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
+func parseBinlogDetail(r io.Reader, f func(Transaction) bool) error {
 	parse := replication.NewBinlogParser()
 	parse.SetParseTime(false)
 	parse.SetUseDecimal(false)
@@ -180,7 +180,9 @@ func parseBinlogDetail(r io.Reader, f func(Transaction)) error {
 					}
 					tx.Size = tx.EndPos - tx.StartPos
 					if f != nil {
-						f(tx)
+						if !f(tx) {
+							return nil
+						}
 					}
 				}
 				currentGtid = ev.Data
@@ -320,7 +322,7 @@ type BinlogFilter struct {
 	OnlyShowGtid bool
 }
 
-func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter BinlogFilter, fn func(Transaction)) error {
+func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter BinlogFilter, fn func(Transaction) bool) error {
 	var subGtid, inGtid, exGtid *gtid.Gtid
 	var err error
 	if filter.IncludeGtid != "" {
@@ -346,29 +348,29 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 	var tx Transaction
 
 	currentGtid := ""
-	callFn := func(tx Transaction) {
+	callFn := func(tx Transaction) bool {
 		if fn == nil {
-			return
+			return true
 		}
 		if !filter.StartDate.IsZero() && filter.StartDate.After(tx.Time) {
-			return
+			return true
 		}
 		if !filter.EndDate.IsZero() && filter.EndDate.Before(tx.Time) {
-			return
+			return true
 		}
 		if filter.StartPos != 0 && filter.StartPos > tx.StartPos {
-			return
+			return true
 		}
 		if filter.EndPos != 0 && filter.EndPos < tx.EndPos {
-			return
+			return true
 		}
 		if filter.BigThan != 0 && filter.BigThan > tx.Size {
-			return
+			return true
 		}
 		if filter.SmallThan != 0 && filter.SmallThan < tx.Size {
-			return
+			return true
 		}
-		fn(tx)
+		return fn(tx)
 	}
 	for {
 		headBuf := make([]byte, replication.EventHeaderSize)
@@ -485,7 +487,9 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 						tx.EndPos = startPos - 1
 					}
 					tx.Size = tx.EndPos - tx.StartPos
-					callFn(tx)
+					if !callFn(tx) {
+						return nil
+					}
 					if subGtid != nil {
 						subGtid.Sub(tx.GTID)
 						if subGtid.EventCount() == 0 {
@@ -541,7 +545,7 @@ func parseBinlogWithFilter(r io.Reader, parse *replication.BinlogParser, filter
 	}
 }
 
-func ParseBinlogWithFilter(path string, pos int64, filter BinlogFilter, fx func(Transaction)) error {
+func ParseBinlogWithFilter(path string, pos int64, filter BinlogFilter, fx func(Transaction) bool) error {
 	defer func() {
 		recover()
 	}()

parse_test.go

@@ -8,8 +8,9 @@ import (
 )
 
 func TestParse(t *testing.T) {
-	ParseBinlogFile("./test/mysql-bin.000023", func(transaction Transaction) {
+	ParseBinlogFile("./test/mysql-bin.000023", func(transaction Transaction) bool {
 		fmt.Println(transaction)
+		return true
 	})
 }
 
@@ -23,8 +24,9 @@ func TestParseFilter(t *testing.T) {
 		EndDate:     time.Time{},
 		BigThan:     0,
 		SmallThan:   0,
-	}, func(transaction Transaction) {
+	}, func(transaction Transaction) bool {
 		fmt.Println(transaction)
+		return true
 	})
 }
 
@@ -33,9 +35,15 @@ func TestParseExternal(t *testing.T) {
 	if _, err := os.Stat(file); err != nil {
 		return
 	}
+	i := 0
 	ParseBinlogWithFilter(file, 0, BinlogFilter{
-		OnlyShowGtid: true,
-	}, func(transaction Transaction) {
+		OnlyShowGtid: false,
+	}, func(transaction Transaction) bool {
 		fmt.Println(transaction)
+		i++
+		if i >= 10 {
+			return false
+		}
+		return true
 	})
 }