save

session-dealer/mysql/model.go

@@ -1,9 +1,5 @@
 package mysql
 
-import (
-	log "github.com/sirupsen/logrus"
-)
-
 type handshakeResponse41 struct {
 	Capability uint32
 	Collation  uint8
@@ -12,52 +8,8 @@ type handshakeResponse41 struct {
 	Auth       []byte
 }
 
-// jigsaw record tcp package begin and end seq id
-type jigsaw struct {
-	b int64
-	e int64
+// receiveRange record mysql package begin and end seq id
+type receiveRange struct {
+	beginSeqID int64
+	endSeqID   int64
 }
-
-type packageWindowCounter struct {
-	sizeCount map[int]int64
-	visitCount int64
-	suggestSize int
-}
-
-func newPackageWindowCounter() *packageWindowCounter {
-	return &packageWindowCounter{
-		sizeCount: make(map[int]int64, 4),
-		suggestSize: 512,
-	}
-}
-
-func (pwc *packageWindowCounter) refresh (readSize int, isLastPackage bool)  {
-	if pwc.visitCount > 10000 {
-		return
-	}
-
-	log.Debugf("WindowCounter: %#v", pwc.sizeCount)
-	pwc.visitCount += 1
-	miniMatchSize := maxIPPackageSize
-	for size := range pwc.sizeCount  {
-		if readSize % size == 0 && miniMatchSize > size {
-			miniMatchSize = size
-		}
-	}
-	if miniMatchSize < maxIPPackageSize {
-		pwc.sizeCount[miniMatchSize] = pwc.sizeCount[miniMatchSize] + 1
-	} else if !isLastPackage {
-		pwc.sizeCount[readSize] = 1
-	}
-
-	mostFrequentSize := pwc.suggestSize
-	mostFrequentCount := int64(0)
-	for size, count := range pwc.sizeCount  {
-		if count > mostFrequentCount {
-			mostFrequentSize = size
-			mostFrequentCount = count
-		}
-	}
-
-	pwc.suggestSize = mostFrequentSize
-}