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Enable list option modification when create list watch #57508

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merged 1 commit into from Jan 8, 2018
Merged

Enable list option modification when create list watch #57508

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14 changes: 12 additions & 2 deletions staging/src/k8s.io/client-go/tools/cache/listwatch.go
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Expand Up @@ -63,8 +63,18 @@ type Getter interface {

// NewListWatchFromClient creates a new ListWatch from the specified client, resource, namespace and field selector.
func NewListWatchFromClient(c Getter, resource string, namespace string, fieldSelector fields.Selector) *ListWatch {
listFunc := func(options metav1.ListOptions) (runtime.Object, error) {
optionsModifier := func(options *metav1.ListOptions) {
options.FieldSelector = fieldSelector.String()
}
return NewFilteredListWatchFromClient(c, resource, namespace, optionsModifier)
}

// NewFilteredListWatchFromClient creates a new ListWatch from the specified client, resource, namespace, and option modifier.
// Option modifier is a function takes a ListOptions and modifies the consumed ListOptions. Provide customized modifier function
// to apply modification to ListOptions with a field selector, a label selector, or any other desired options.
func NewFilteredListWatchFromClient(c Getter, resource string, namespace string, optionsModifier func(options *metav1.ListOptions)) *ListWatch {
listFunc := func(options metav1.ListOptions) (runtime.Object, error) {
optionsModifier(&options)
return c.Get().
Namespace(namespace).
Resource(resource).
Expand All @@ -74,7 +84,7 @@ func NewListWatchFromClient(c Getter, resource string, namespace string, fieldSe
}
watchFunc := func(options metav1.ListOptions) (watch.Interface, error) {
options.Watch = true
options.FieldSelector = fieldSelector.String()
optionsModifier(&options)
return c.Get().
Namespace(namespace).
Resource(resource).
Expand Down