feat: add functions

statistics/main.go

@@ -13,7 +13,7 @@ type ChannelItem struct {
 
 type DurationChannelItems struct {
 	durationTag    string
-	channelItemMap map[string]ChannelItem
+	channelItemMap map[string]*ChannelItem
 }
 
 var durationChannelItemsMap = map[string]DurationChannelItems{}
@@ -26,6 +26,24 @@ type CountItem struct {
 	downBytes uint64
 }
 
+func (i *CountItem) merge(i2 *CountItem) (*CountItem, error) {
+	if i.tag != i2.tag {
+		return nil, fmt.Errorf("Tag mis match %s vs %s", i.tag, i2.tag)
+	}
+	t1 := uint64(i.timestamp/1000) * 1000
+	t2 := uint64(i2.timestamp/1000) * 1000
+	if t1 != t2 {
+		return nil, fmt.Errorf("Timestamp mis match %d vs %d", t1, t2)
+	}
+	i3 := &CountItem{
+		tag:       i.tag,
+		timestamp: t1,
+		upBytes:   i.upBytes + i2.upBytes,
+		downBytes: i.downBytes + i2.downBytes,
+	}
+	return i3, nil
+}
+
 var countItemChan = make(chan CountItem)
 
 // var countItemChan = make(ChannelItem, 0)
@@ -38,6 +56,11 @@ func collectCountItem() {
 	for {
 		countItem := <-countItemChan
 		// TODO ...
+
 		fmt.Printf("%v\n", countItem)
 	}
 }
+
+func makeDurationTag(timestamp uint64) string {
+	return fmt.Sprintf("%d", uint64(timestamp/1000))
+}