handle disordered network interfaces (#48)

Nidhi Agarwal · Francisco de Freitas · commit 8b048f63b5f0 · 2019-12-30T19:09:22.000+01:00
diff --git a/main.go b/main.go
@@ -169,8 +169,11 @@ func (t *AugmentedTask) ExporterInformation() []*PrometheusTaskInfo {
 		if len(t.EC2Instance.NetworkInterfaces) == 0 {
 			return ret
 		}
+
 		for _, iface := range t.EC2Instance.NetworkInterfaces {
-			if iface.PrivateIpAddress != nil && *iface.PrivateIpAddress != "" {
+			if iface.PrivateIpAddress != nil && *iface.PrivateIpAddress != "" &&
+				iface.PrivateDnsName != nil && *iface.PrivateDnsName != "" &&
+				*iface.PrivateDnsName == *t.EC2Instance.PrivateDnsName {
 				ip = *iface.PrivateIpAddress
 				break
 			}

Original file line number	Diff line number	Diff line change
`@@ -169,8 +169,11 @@ func (t AugmentedTask) ExporterInformation() []PrometheusTaskInfo {`
`169`	`169`	`if len(t.EC2Instance.NetworkInterfaces) == 0 {`
`170`	`170`	`return ret`
`171`	`171`	`}`
	`172`	`+`
`172`	`173`	`for _, iface := range t.EC2Instance.NetworkInterfaces {`
`173`		`- if iface.PrivateIpAddress != nil && *iface.PrivateIpAddress != "" {`
	`174`	`+ if iface.PrivateIpAddress != nil && *iface.PrivateIpAddress != "" &&`
	`175`	`+ iface.PrivateDnsName != nil && *iface.PrivateDnsName != "" &&`
	`176`	`+ iface.PrivateDnsName == t.EC2Instance.PrivateDnsName {`
`174`	`177`	`ip = *iface.PrivateIpAddress`
`175`	`178`	`break`
`176`	`179`	`}`