coredns/plugin/kubernetes/object/pod.go
janluk d7cdb992b4 Measure and expose DNS programming latency from Kubernetes plugin. (#3171)
For now metric is measure only for headless services. Informer has been slighlty
refactored, so the code can measure latency without storing extra fields on
Endpoint struct.

Signed-off-by: Janek Łukaszewicz <janluk@google.com>

Suggestions from code review

Co-Authored-By: Chris O'Haver <cohaver@infoblox.com>
2019-10-04 16:48:43 +01:00

80 lines
1.9 KiB
Go

package object
import (
api "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
)
// Pod is a stripped down api.Pod with only the items we need for CoreDNS.
type Pod struct {
// Don't add new fields to this struct without talking to the CoreDNS maintainers.
Version string
PodIP string
Name string
Namespace string
*Empty
}
// ToPod returns a function that converts an api.Pod to a *Pod.
func ToPod(skipCleanup bool) ToFunc {
return func(obj interface{}) interface{} {
return toPod(skipCleanup, obj)
}
}
func toPod(skipCleanup bool, obj interface{}) interface{} {
pod, ok := obj.(*api.Pod)
if !ok {
return nil
}
p := &Pod{
Version: pod.GetResourceVersion(),
PodIP: pod.Status.PodIP,
Namespace: pod.GetNamespace(),
Name: pod.GetName(),
}
// don't add pods that are being deleted.
t := pod.ObjectMeta.DeletionTimestamp
if t != nil && !(*t).Time.IsZero() {
return nil
}
if !skipCleanup {
*pod = api.Pod{}
}
return p
}
var _ runtime.Object = &Pod{}
// DeepCopyObject implements the ObjectKind interface.
func (p *Pod) DeepCopyObject() runtime.Object {
p1 := &Pod{
Version: p.Version,
PodIP: p.PodIP,
Namespace: p.Namespace,
Name: p.Name,
}
return p1
}
// GetNamespace implements the metav1.Object interface.
func (p *Pod) GetNamespace() string { return p.Namespace }
// SetNamespace implements the metav1.Object interface.
func (p *Pod) SetNamespace(namespace string) {}
// GetName implements the metav1.Object interface.
func (p *Pod) GetName() string { return p.Name }
// SetName implements the metav1.Object interface.
func (p *Pod) SetName(name string) {}
// GetResourceVersion implements the metav1.Object interface.
func (p *Pod) GetResourceVersion() string { return p.Version }
// SetResourceVersion implements the metav1.Object interface.
func (p *Pod) SetResourceVersion(version string) {}