added maxpacketloss variable for ping check

check/check_ping.go

@@ -3,9 +3,9 @@ package check
 import (
 	"alrm/check/ping"
 	"fmt"
-	"time"
-	"strings"
 	"strconv"
+	"strings"
+	"time"
 )
 
 const (
@@ -13,6 +13,7 @@ const (
 	TK_COUNT
 	TK_TIMEOUT
 	TK_INTERVAL
+	TK_MAXPACKETLOSS
 )
 
 type CheckPing struct {
@@ -21,6 +22,7 @@ type CheckPing struct {
 	Count         int
 	Timeout       time.Duration
 	Interval      time.Duration
+	MaxPacketLoss float64
 	state         int
 }
 
@@ -28,7 +30,7 @@ func NewCheckPing(addr string) *CheckPing {
 	return &CheckPing{
 		Type: "ping", Address: addr,
 		Count: 1, Timeout: time.Second * 5,
-		Interval: time.Second,
+		Interval: time.Second, MaxPacketLoss: 0,
 	}
 }
 
@@ -52,15 +54,20 @@ func (c *CheckPing) Check(debuglvl int) error {
 	}
 
 	stats := p.Statistics()
-	if len(stats.Rtts) < 1 {
-		return fmt.Errorf("ping failure")
-	}
 
-	if debuglvl > 0 {
+	if debuglvl > 1 {
 		for i, r := range stats.Rtts {
 			fmt.Printf("Ping %d: %s\n", i+1, r)
 		}
 	}
+
+	if debuglvl > 0 {
+		fmt.Printf("Packet loss: %.f%%\n", stats.PacketLoss)
+	}
+
+	if stats.PacketLoss > c.MaxPacketLoss {
+		return fmt.Errorf("ping packet loss exceeds max")
+	}
 	return nil
 }
 
@@ -68,13 +75,15 @@ func (c *CheckPing) Parse(tk string) (bool, error) {
 	var err error
 	switch c.state {
 	case TK_NONE:
-			switch strings.ToLower(tk){
+		switch strings.ToLower(tk) {
 		case "count":
 			c.state = TK_COUNT
 		case "timeout":
 			c.state = TK_TIMEOUT
 		case "interval":
 			c.state = TK_INTERVAL
+		case "maxpacketloss":
+			c.state = TK_MAXPACKETLOSS
 		default:
 			return false, nil
 		}
@@ -100,6 +109,13 @@ func (c *CheckPing) Parse(tk string) (bool, error) {
 		}
 		c.state = TK_NONE
 
+	case TK_MAXPACKETLOSS:
+		c.MaxPacketLoss, err = strconv.ParseFloat(tk, 64)
+		if err != nil {
+			return false, fmt.Errorf("invalid minpacketloss \"%s\"", tk)
+		}
+		c.state = TK_NONE
+
 	default:
 		return false, fmt.Errorf("invalid state in check_ping")
 	}