Merge pull request #15 in DEV/k8s-argus from DEV-47062-add-distinguishing-property-to to develop

* commit 'd65374e91f1b332ba3749e7144addf7ebe23ba62':
  DEV-47062 Add distinguishing property to host network pods

Author: Jeremy Tang

pkg/device/builder/builder.go

@@ -63,6 +63,11 @@ func (b *Builder) System(name, value string) types.DeviceOption {
 	return setProperty("system."+name, value)
 }
 
+// Custom implements types.DeviceBuilder.
+func (b *Builder) Custom(name, value string) types.DeviceOption {
+	return setProperty(name, value)
+}
+
 func setProperty(name, value string) types.DeviceOption {
 	return func(device *lm.RestDevice) {
 		if value != "" {

pkg/types/types.go

@@ -75,4 +75,6 @@ type DeviceBuilder interface {
 	Auto(string, string) DeviceOption
 	// System adds a system property to the device.
 	System(string, string) DeviceOption
+	// System adds a custom property to the device.
+	Custom(string, string) DeviceOption
 }

pkg/watch/pod/pod.go

@@ -133,7 +133,7 @@ func (w *Watcher) move(pod *v1.Pod) {
 
 func (w *Watcher) args(pod *v1.Pod, category string) []types.DeviceOption {
 	categories := utilities.BuildSystemCategoriesFromLabels(category, pod.Labels)
-	return []types.DeviceOption{
+	options := []types.DeviceOption{
 		w.Name(getPodDNSName(pod)),
 		w.ResourceLabels(pod.Labels),
 		w.DisplayName(pod.Name),
@@ -145,6 +145,10 @@ func (w *Watcher) args(pod *v1.Pod, category string) []types.DeviceOption {
 		w.Auto("uid", string(pod.UID)),
 		w.System("ips", pod.Status.PodIP),
 	}
+	if pod.Spec.HostNetwork {
+		options = append(options, w.Custom("kubernetes.pod.hostNetwork", "true"))
+	}
+	return options
 }
 
 func getPodDNSName(pod *v1.Pod) string {