From e541876ad67d4f33bf90c699afaa4b31d88ad3d9 Mon Sep 17 00:00:00 2001
From: Zheng Dayu <davidzheng23@gmail.com>
Date: Wed, 3 Jul 2019 17:51:52 +0800
Subject: [PATCH] fix panic in metrics

---
 src/redis-shake/metric/metric.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/redis-shake/metric/metric.go b/src/redis-shake/metric/metric.go
index a5fbd35..fbb6dc5 100644
--- a/src/redis-shake/metric/metric.go
+++ b/src/redis-shake/metric/metric.go
@@ -3,6 +3,7 @@ package metric
 import (
 	"encoding/json"
 	"fmt"
+	"math"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -42,7 +43,7 @@ func (p *Percent) Get(returnString bool) interface{} {
 		if returnString {
 			return "null"
 		} else {
-			return int64(^uint64(0) >> 1) // int64_max
+			return math.MaxFloat64
 		}
 	} else {
 		dividend := atomic.LoadUint64(&p.Dividend)
@@ -225,7 +226,10 @@ func (m *Metric) GetAvgDelay() interface{} {
 }
 
 func (m *Metric) GetAvgDelayFloat64() float64 {
-	return float64(m.AvgDelay.Get(false).(int64))
+	if avgDelay, ok := m.AvgDelay.Get(false).(float64); ok {
+		return avgDelay
+	}
+	return math.MaxFloat64
 }
 
 func (m *Metric) AddNetworkFlow(dbSyncerID int, val uint64) {