当qps获取不成功时，显示未知

pkg/report-form/path.go

@@ -58,6 +58,8 @@ func (p *Path) initQps() {
 	maxqps, ok := queryOneAndToInt(sql)
 	if ok {
 		p.maxqps = maxqps
+	} else {
+		p.maxqps = -1
 	}
 }
 

pkg/report-form/report_form.go

@@ -26,6 +26,9 @@ var (
 
 //Human-readable number
 func hrn(n int) string {
+	if n < 0 {
+		return "未知"
+	}
 	num := float64(n)
 	unit := float64(1024)
 	if num < unit {

pkg/report-form/service.go

@@ -47,7 +47,7 @@ func NewService(name string, startTime time.Time, endTime time.Time) *Service {
 		endTime:   endTime,
 		pathMap:   make(map[string]*Path),
 		nodeMap:   make(map[string]*Node),
-		maxqps:    0,
+		maxqps:    -1,
 	}
 
 	//初始化path
@@ -97,6 +97,8 @@ func (s *Service) initQps() {
 	maxqps, ok := queryOneAndToInt(sql)
 	if ok {
 		s.maxqps = maxqps
+	} else {
+		s.maxqps = -1
 	}
 }
 

pkg/report-form/service_map.go

@@ -194,7 +194,7 @@ func (sm *ServiceMap) GetMaxQps() int {
 	}
 
 	//取最大值
-	max := 0
+	max := -1
 	for _, x := range maxList {
 		if x > max {
 			max = x
@@ -211,7 +211,7 @@ func (sm *ServiceMap) getMaxQps(start time.Time, end time.Time) int {
 	sql := fmt.Sprintf(sqlMaxQps, start.UnixNano(), end.UnixNano())
 	maxqps, ok := queryOneAndToInt(sql)
 	if !ok {
-		return 0
+		return -1
 	}
 	return maxqps
 }