Support more volume types in stats/summary endpoint including configmap, secret, projected

Author: WanLinghao

pkg/volume/configmap/configmap.go

@@ -47,6 +47,10 @@ type configMapPlugin struct {
 
 var _ volume.VolumePlugin = &configMapPlugin{}
 
+func getPath(uid types.UID, volName string, host volume.VolumeHost) string {
+	return host.GetPodVolumeDir(uid, strings.EscapeQualifiedNameForDisk(configMapPluginName), volName)
+}
+
 func (plugin *configMapPlugin) Init(host volume.VolumeHost) error {
 	plugin.host = host
 	plugin.getConfigMap = host.GetConfigMapFunc()
@@ -92,7 +96,7 @@ func (plugin *configMapPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts v
 			pod.UID,
 			plugin,
 			plugin.host.GetMounter(plugin.GetPluginName()),
-			volume.MetricsNil{},
+			volume.NewCachedMetrics(volume.NewMetricsDu(getPath(pod.UID, spec.Name(), plugin.host))),
 		},
 		source:       *spec.Volume.ConfigMap,
 		pod:          *pod,
@@ -108,7 +112,7 @@ func (plugin *configMapPlugin) NewUnmounter(volName string, podUID types.UID) (v
 			podUID,
 			plugin,
 			plugin.host.GetMounter(plugin.GetPluginName()),
-			volume.MetricsNil{},
+			volume.NewCachedMetrics(volume.NewMetricsDu(getPath(podUID, volName, plugin.host))),
 		},
 	}, nil
 }
@@ -128,7 +132,7 @@ type configMapVolume struct {
 	podUID  types.UID
 	plugin  *configMapPlugin
 	mounter mount.Interface
-	volume.MetricsNil
+	volume.MetricsProvider
 }
 
 var _ volume.Volume = &configMapVolume{}

pkg/volume/downwardapi/downwardapi.go

@@ -49,6 +49,10 @@ type downwardAPIPlugin struct {
 
 var _ volume.VolumePlugin = &downwardAPIPlugin{}
 
+func getPath(uid types.UID, volName string, host volume.VolumeHost) string {
+	return host.GetPodVolumeDir(uid, utilstrings.EscapeQualifiedNameForDisk(downwardAPIPluginName), volName)
+}
+
 func wrappedVolumeSpec() volume.Spec {
 	return volume.Spec{
 		Volume: &v1.Volume{VolumeSource: v1.VolumeSource{EmptyDir: &v1.EmptyDirVolumeSource{Medium: v1.StorageMediumMemory}}},
@@ -92,11 +96,12 @@ func (plugin *downwardAPIPlugin) SupportsBulkVolumeVerification() bool {
 
 func (plugin *downwardAPIPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts volume.VolumeOptions) (volume.Mounter, error) {
 	v := &downwardAPIVolume{
-		volName: spec.Name(),
-		items:   spec.Volume.DownwardAPI.Items,
-		pod:     pod,
-		podUID:  pod.UID,
-		plugin:  plugin,
+		volName:         spec.Name(),
+		items:           spec.Volume.DownwardAPI.Items,
+		pod:             pod,
+		podUID:          pod.UID,
+		plugin:          plugin,
+		MetricsProvider: volume.NewCachedMetrics(volume.NewMetricsDu(getPath(pod.UID, spec.Name(), plugin.host))),
 	}
 	return &downwardAPIVolumeMounter{
 		downwardAPIVolume: v,
@@ -108,9 +113,10 @@ func (plugin *downwardAPIPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts
 func (plugin *downwardAPIPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
 	return &downwardAPIVolumeUnmounter{
 		&downwardAPIVolume{
-			volName: volName,
-			podUID:  podUID,
-			plugin:  plugin,
+			volName:         volName,
+			podUID:          podUID,
+			plugin:          plugin,
+			MetricsProvider: volume.NewCachedMetrics(volume.NewMetricsDu(getPath(podUID, volName, plugin.host))),
 		},
 	}, nil
 }
@@ -132,7 +138,7 @@ type downwardAPIVolume struct {
 	pod     *v1.Pod
 	podUID  types.UID // TODO: remove this redundancy as soon NewUnmounter func will have *v1.POD and not only types.UID
 	plugin  *downwardAPIPlugin
-	volume.MetricsNil
+	volume.MetricsProvider
 }
 
 // downwardAPIVolumeMounter fetches info from downward API from the pod

pkg/volume/projected/projected.go

@@ -109,10 +109,11 @@ func (plugin *projectedPlugin) SupportsBulkVolumeVerification() bool {
 func (plugin *projectedPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts volume.VolumeOptions) (volume.Mounter, error) {
 	return &projectedVolumeMounter{
 		projectedVolume: &projectedVolume{
-			volName: spec.Name(),
-			sources: spec.Volume.Projected.Sources,
-			podUID:  pod.UID,
-			plugin:  plugin,
+			volName:         spec.Name(),
+			sources:         spec.Volume.Projected.Sources,
+			podUID:          pod.UID,
+			plugin:          plugin,
+			MetricsProvider: volume.NewCachedMetrics(volume.NewMetricsDu(getPath(pod.UID, spec.Name(), plugin.host))),
 		},
 		source: *spec.Volume.Projected,
 		pod:    pod,
@@ -123,9 +124,10 @@ func (plugin *projectedPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, opts v
 func (plugin *projectedPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
 	return &projectedVolumeUnmounter{
 		&projectedVolume{
-			volName: volName,
-			podUID:  podUID,
-			plugin:  plugin,
+			volName:         volName,
+			podUID:          podUID,
+			plugin:          plugin,
+			MetricsProvider: volume.NewCachedMetrics(volume.NewMetricsDu(getPath(podUID, volName, plugin.host))),
 		},
 	}, nil
 }
@@ -146,7 +148,7 @@ type projectedVolume struct {
 	sources []v1.VolumeProjection
 	podUID  types.UID
 	plugin  *projectedPlugin
-	volume.MetricsNil
+	volume.MetricsProvider
 }
 
 var _ volume.Volume = &projectedVolume{}