/
pv.go
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/
pv.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of K9s
package render
import (
"fmt"
"path"
"strings"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/model1"
"github.com/derailed/tcell/v2"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
)
const terminatingPhase = "Terminating"
// PersistentVolume renders a K8s PersistentVolume to screen.
type PersistentVolume struct {
Base
}
// ColorerFunc colors a resource row.
func (p PersistentVolume) ColorerFunc() model1.ColorerFunc {
return func(ns string, h model1.Header, re *model1.RowEvent) tcell.Color {
c := model1.DefaultColorer(ns, h, re)
idx, ok := h.IndexOf("STATUS", true)
if ok {
return c
}
switch strings.TrimSpace(re.Row.Fields[idx]) {
case string(v1.VolumeBound):
return model1.StdColor
case string(v1.VolumeAvailable):
return tcell.ColorGreen
case string(v1.VolumePending):
return model1.PendingColor
case terminatingPhase:
return model1.CompletedColor
}
return c
}
}
// Header returns a header rbw.
func (PersistentVolume) Header(string) model1.Header {
return model1.Header{
model1.HeaderColumn{Name: "NAME"},
model1.HeaderColumn{Name: "CAPACITY", Capacity: true},
model1.HeaderColumn{Name: "ACCESS MODES"},
model1.HeaderColumn{Name: "RECLAIM POLICY"},
model1.HeaderColumn{Name: "STATUS"},
model1.HeaderColumn{Name: "CLAIM"},
model1.HeaderColumn{Name: "STORAGECLASS"},
model1.HeaderColumn{Name: "REASON"},
model1.HeaderColumn{Name: "VOLUMEMODE", Wide: true},
model1.HeaderColumn{Name: "LABELS", Wide: true},
model1.HeaderColumn{Name: "VALID", Wide: true},
model1.HeaderColumn{Name: "AGE", Time: true},
}
}
// Render renders a K8s resource to screen.
func (p PersistentVolume) Render(o interface{}, ns string, r *model1.Row) error {
raw, ok := o.(*unstructured.Unstructured)
if !ok {
return fmt.Errorf("expected PersistentVolume, but got %T", o)
}
var pv v1.PersistentVolume
err := runtime.DefaultUnstructuredConverter.FromUnstructured(raw.Object, &pv)
if err != nil {
return err
}
phase := pv.Status.Phase
if pv.ObjectMeta.DeletionTimestamp != nil {
phase = terminatingPhase
}
var claim string
if pv.Spec.ClaimRef != nil {
claim = path.Join(pv.Spec.ClaimRef.Namespace, pv.Spec.ClaimRef.Name)
}
class, found := pv.Annotations[v1.BetaStorageClassAnnotation]
if !found {
class = pv.Spec.StorageClassName
}
size := pv.Spec.Capacity[v1.ResourceStorage]
r.ID = client.MetaFQN(pv.ObjectMeta)
r.Fields = model1.Fields{
pv.Name,
size.String(),
accessMode(pv.Spec.AccessModes),
string(pv.Spec.PersistentVolumeReclaimPolicy),
string(phase),
claim,
class,
pv.Status.Reason,
p.volumeMode(pv.Spec.VolumeMode),
mapToStr(pv.Labels),
AsStatus(p.diagnose(phase)),
ToAge(pv.GetCreationTimestamp()),
}
return nil
}
func (PersistentVolume) diagnose(phase v1.PersistentVolumePhase) error {
if phase == v1.VolumeFailed {
return fmt.Errorf("failed to delete or recycle")
}
return nil
}
func (PersistentVolume) volumeMode(m *v1.PersistentVolumeMode) string {
if m == nil {
return MissingValue
}
return string(*m)
}
// ----------------------------------------------------------------------------
// Helpers...
func accessMode(aa []v1.PersistentVolumeAccessMode) string {
dd := accessDedup(aa)
s := make([]string, 0, len(dd))
for _, am := range dd {
switch am {
case v1.ReadWriteOnce:
s = append(s, "RWO")
case v1.ReadOnlyMany:
s = append(s, "ROX")
case v1.ReadWriteMany:
s = append(s, "RWX")
case v1.ReadWriteOncePod:
s = append(s, "RWOP")
}
}
return strings.Join(s, ",")
}
func accessContains(cc []v1.PersistentVolumeAccessMode, a v1.PersistentVolumeAccessMode) bool {
for _, c := range cc {
if c == a {
return true
}
}
return false
}
func accessDedup(cc []v1.PersistentVolumeAccessMode) []v1.PersistentVolumeAccessMode {
set := []v1.PersistentVolumeAccessMode{}
for _, c := range cc {
if !accessContains(set, c) {
set = append(set, c)
}
}
return set
}