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/
pod.go
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/
pod.go
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package objectvisitor
import (
"context"
"github.com/pkg/errors"
"go.opencensus.io/trace"
"golang.org/x/sync/errgroup"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"github.com/vmware-tanzu/octant/internal/gvk"
"github.com/vmware-tanzu/octant/internal/queryer"
"github.com/vmware-tanzu/octant/internal/util/kubernetes"
)
// Pod is a typed visitor for pods.
type Pod struct {
queryer queryer.Queryer
}
var _ TypedVisitor = (*Pod)(nil)
// NewPod creates an instance of Pod.
func NewPod(q queryer.Queryer) *Pod {
return &Pod{
queryer: q,
}
}
// Support returns the gvk this typed visitor supports.
func (p *Pod) Supports() schema.GroupVersionKind {
return gvk.Pod
}
// Visit visits a pod. It looks for service accounts and services.
func (p *Pod) Visit(ctx context.Context, object *unstructured.Unstructured, handler ObjectHandler, visitor Visitor, visitDescendants bool, level int) error {
ctx, span := trace.StartSpan(ctx, "visitPod")
defer span.End()
if p.queryer == nil {
return errors.New("queryer is nil")
}
pod := &corev1.Pod{}
if err := kubernetes.FromUnstructured(object, pod); err != nil {
return err
}
handler.SetLevel(pod.Kind, level)
var g errgroup.Group
g.Go(func() error {
services, err := p.queryer.ServicesForPod(ctx, pod)
if err != nil {
return err
}
for i := range services {
service := services[i]
g.Go(func() error {
m, err := runtime.DefaultUnstructuredConverter.ToUnstructured(service)
if err != nil {
return err
}
u := &unstructured.Unstructured{Object: m}
if err := visitor.Visit(ctx, u, handler, true, level); err != nil {
return errors.Wrapf(err, "pod %s visit service %s",
kubernetes.PrintObject(pod), kubernetes.PrintObject(service))
}
return handler.AddEdge(ctx, object, u, level)
})
}
return nil
})
g.Go(func() error {
if pod.Spec.ServiceAccountName != "" {
serviceAccount, err := p.queryer.ServiceAccountForPod(ctx, pod)
if err != nil {
return err
}
m, err := runtime.DefaultUnstructuredConverter.ToUnstructured(serviceAccount)
if err != nil {
return err
}
u := &unstructured.Unstructured{Object: m}
if serviceAccount != nil {
if err := visitor.Visit(ctx, u, handler, true, level); err != nil {
return errors.Wrapf(err, "pod %s visit service account %s",
kubernetes.PrintObject(pod), kubernetes.PrintObject(serviceAccount))
}
return handler.AddEdge(ctx, object, u, level)
}
}
return nil
})
g.Go(func() error {
configMaps, err := p.queryer.ConfigMapsForPod(ctx, pod)
if err != nil {
return err
}
for i := range configMaps {
configMap := configMaps[i]
g.Go(func() error {
m, err := runtime.DefaultUnstructuredConverter.ToUnstructured(configMap)
if err != nil {
return err
}
u := &unstructured.Unstructured{Object: m}
return handler.AddEdge(ctx, object, u, level)
})
}
return nil
})
g.Go(func() error {
secrets, err := p.queryer.SecretsForPod(ctx, pod)
if err != nil {
return err
}
for i := range secrets {
secret := secrets[i]
g.Go(func() error {
m, err := runtime.DefaultUnstructuredConverter.ToUnstructured(secret)
if err != nil {
return err
}
u := &unstructured.Unstructured{Object: m}
return handler.AddEdge(ctx, object, u, level)
})
}
return nil
})
g.Go(func() error {
pvcs, err := p.queryer.PersistentVolumeClaimsForPod(ctx, pod)
if err != nil {
return err
}
for i := range pvcs {
pvc := pvcs[i]
g.Go(func() error {
m, err := runtime.DefaultUnstructuredConverter.ToUnstructured(pvc)
if err != nil {
return err
}
u := &unstructured.Unstructured{Object: m}
return handler.AddEdge(ctx, object, u, level)
})
}
return nil
})
return g.Wait()
}