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svc.go
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svc.go
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package xray
import (
"context"
"fmt"
"strings"
"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/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
)
// Service represents an xray renderer.
type Service struct{}
// Render renders an xray node.
func (s *Service) Render(ctx context.Context, ns string, o interface{}) error {
raw, ok := o.(*unstructured.Unstructured)
if !ok {
return fmt.Errorf("Expected Unstructured, but got %T", o)
}
var svc v1.Service
err := runtime.DefaultUnstructuredConverter.FromUnstructured(raw.Object, &svc)
if err != nil {
return err
}
parent, ok := ctx.Value(KeyParent).(*TreeNode)
if !ok {
return fmt.Errorf("Expecting a TreeNode but got %T", ctx.Value(KeyParent))
}
root := NewTreeNode("v1/services", client.FQN(svc.Namespace, svc.Name))
oo, err := s.locatePods(ctx, svc.Namespace, svc.Spec.Selector)
if err != nil {
return err
}
ctx = context.WithValue(ctx, KeyParent, root)
var re Pod
for _, o := range oo {
p, ok := o.(*unstructured.Unstructured)
if !ok {
return fmt.Errorf("expecting *Unstructured but got %T", o)
}
if err := re.Render(ctx, ns, &render.PodWithMetrics{Raw: p}); err != nil {
return err
}
}
root.Extras[StatusKey] = OkStatus
if root.IsLeaf() {
return nil
}
gvr, nsID := "v1/namespaces", client.FQN(client.ClusterScope, svc.Namespace)
nsn := parent.Find(gvr, nsID)
if nsn == nil {
nsn = NewTreeNode(gvr, nsID)
parent.Add(nsn)
}
nsn.Add(root)
return nil
}
func (s *Service) locatePods(ctx context.Context, ns string, sel map[string]string) ([]runtime.Object, error) {
f, ok := ctx.Value(internal.KeyFactory).(dao.Factory)
if !ok {
return nil, fmt.Errorf("Expecting a factory but got %T", ctx.Value(internal.KeyFactory))
}
ll := make([]string, 0, len(sel))
for k, v := range sel {
ll = append(ll, fmt.Sprintf("%s=%s", k, v))
}
fsel, err := labels.ConvertSelectorToLabelsMap(strings.Join(ll, ","))
if err != nil {
return nil, err
}
return f.List("v1/pods", ns, false, fsel.AsSelector())
}