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pod.go
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pod.go
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package xray
import (
"context"
"fmt"
"strconv"
"github.com/derailed/k9s/internal"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/dao"
"github.com/derailed/k9s/internal/render"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
)
// Pod represents an xray renderer.
type Pod struct{}
// Render renders an xray node.
func (p *Pod) Render(ctx context.Context, ns string, o interface{}) error {
pwm, ok := o.(*render.PodWithMetrics)
if !ok {
return fmt.Errorf("Expected PodWithMetrics, but got %T", o)
}
var po v1.Pod
err := runtime.DefaultUnstructuredConverter.FromUnstructured(pwm.Raw.Object, &po)
if err != nil {
return err
}
f, ok := ctx.Value(internal.KeyFactory).(dao.Factory)
if !ok {
return fmt.Errorf("no factory found in context")
}
node := NewTreeNode("v1/pods", client.FQN(po.Namespace, po.Name))
parent, ok := ctx.Value(KeyParent).(*TreeNode)
if !ok {
return fmt.Errorf("Expecting a TreeNode but got %T", ctx.Value(KeyParent))
}
if err := p.containerRefs(ctx, node, po.Namespace, po.Spec); err != nil {
return err
}
p.podVolumeRefs(f, node, po.Namespace, po.Spec.Volumes)
if err := p.serviceAccountRef(ctx, f, node, po.Namespace, po.Spec); err != nil {
return err
}
gvr, nsID := "v1/namespaces", client.FQN(client.ClusterScope, po.Namespace)
nsn := parent.Find(gvr, nsID)
if nsn == nil {
nsn = NewTreeNode(gvr, nsID)
parent.Add(nsn)
}
nsn.Add(node)
return p.validate(node, po)
}
func (p *Pod) validate(node *TreeNode, po v1.Pod) error {
var re render.Pod
phase := re.Phase(&po)
ss := po.Status.ContainerStatuses
cr, _, _ := re.Statuses(ss)
status := OkStatus
if cr != len(ss) {
status = ToastStatus
}
if phase == "Completed" {
status = CompletedStatus
}
node.Extras[StatusKey] = status
node.Extras[InfoKey] = strconv.Itoa(cr) + "/" + strconv.Itoa(len(ss))
return nil
}
func (*Pod) containerRefs(ctx context.Context, parent *TreeNode, ns string, spec v1.PodSpec) error {
ctx = context.WithValue(ctx, KeyParent, parent)
var cre Container
for i := 0; i < len(spec.InitContainers); i++ {
if err := cre.Render(ctx, ns, render.ContainerRes{Container: &spec.InitContainers[i]}); err != nil {
return err
}
}
for i := 0; i < len(spec.Containers); i++ {
if err := cre.Render(ctx, ns, render.ContainerRes{Container: &spec.Containers[i]}); err != nil {
return err
}
}
return nil
}
func (*Pod) serviceAccountRef(ctx context.Context, f dao.Factory, parent *TreeNode, ns string, spec v1.PodSpec) error {
if spec.ServiceAccountName == "" {
return nil
}
id := client.FQN(ns, spec.ServiceAccountName)
o, err := f.Get("v1/serviceaccounts", id, true, labels.Everything())
if err != nil {
return err
}
if o == nil {
addRef(f, parent, "v1/serviceaccounts", id, nil)
return nil
}
var saRE ServiceAccount
ctx = context.WithValue(ctx, KeyParent, parent)
ctx = context.WithValue(ctx, KeySAAutomount, spec.AutomountServiceAccountToken)
return saRE.Render(ctx, ns, o)
}
func (*Pod) podVolumeRefs(f dao.Factory, parent *TreeNode, ns string, vv []v1.Volume) {
for _, v := range vv {
sec := v.VolumeSource.Secret
if sec != nil {
addRef(f, parent, "v1/secrets", client.FQN(ns, sec.SecretName), sec.Optional)
continue
}
cm := v.VolumeSource.ConfigMap
if cm != nil {
addRef(f, parent, "v1/configmaps", client.FQN(ns, cm.LocalObjectReference.Name), cm.Optional)
continue
}
pvc := v.VolumeSource.PersistentVolumeClaim
if pvc != nil {
addRef(f, parent, "v1/persistentvolumeclaims", client.FQN(ns, pvc.ClaimName), nil)
}
}
}