78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
package fedinformer
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import (
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"fmt"
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"reflect"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/meta"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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// StripUnusedFields is the transform function for shared informers,
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// it removes unused fields from objects before they are stored in the cache to save memory.
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func StripUnusedFields(obj interface{}) (interface{}, error) {
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accessor, err := meta.Accessor(obj)
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if err != nil {
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// shouldn't happen
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return obj, nil
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}
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// ManagedFields is large and we never use it
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accessor.SetManagedFields(nil)
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return obj, nil
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}
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// NodeTransformFunc is the dedicated transform function for Node objects.
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// It cleans up some parts of the object before it will be put into the controller
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// cache to reduce memory usage.
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//
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// Note: this function removes most of the fields, please make sure your controller
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// doesn't care for the removed fields, especially when use in shared informers.
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func NodeTransformFunc(obj interface{}) (interface{}, error) {
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node, ok := obj.(*corev1.Node)
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if !ok {
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return obj, fmt.Errorf("expect resource Node but got %v", reflect.TypeOf(obj))
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}
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aggregatedNode := &corev1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: node.Name,
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},
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Status: corev1.NodeStatus{
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Allocatable: node.Status.Allocatable,
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Conditions: node.Status.Conditions,
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},
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}
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return aggregatedNode, nil
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}
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// PodTransformFunc is the dedicated transform function for Pod objects.
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// It cleans up some parts of the object before it will be put into the controller
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// cache to reduce memory usage.
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//
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// Note: this function removes most of the fields, please make sure your controller
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// doesn't care for the removed fields, especially when use in shared informers.
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func PodTransformFunc(obj interface{}) (interface{}, error) {
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pod, ok := obj.(*corev1.Pod)
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if !ok {
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return obj, fmt.Errorf("expect resource Pod but got %v", reflect.TypeOf(obj))
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}
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aggregatedPod := &corev1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: pod.Name,
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Namespace: pod.Namespace,
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},
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Spec: corev1.PodSpec{
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NodeName: pod.Spec.NodeName,
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InitContainers: pod.Spec.InitContainers,
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Containers: pod.Spec.Containers,
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Overhead: pod.Spec.Overhead,
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},
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Status: corev1.PodStatus{
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Phase: pod.Status.Phase,
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},
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}
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return aggregatedPod, nil
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}
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