mirror of https://github.com/k3s-io/k3s
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package predicates
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/labels"
|
|
)
|
|
|
|
// ExampleUtils is a https://blog.golang.org/examples styled unit test.
|
|
func ExampleFindLabelsInSet() {
|
|
labelSubset := labels.Set{}
|
|
labelSubset["label1"] = "value1"
|
|
labelSubset["label2"] = "value2"
|
|
// Lets make believe that these pods are on the cluster.
|
|
// Utility functions will inspect their labels, filter them, and so on.
|
|
nsPods := []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod1",
|
|
Namespace: "ns1",
|
|
Labels: map[string]string{
|
|
"label1": "wontSeeThis",
|
|
"label2": "wontSeeThis",
|
|
"label3": "will_see_this",
|
|
},
|
|
},
|
|
}, // first pod which will be used via the utilities
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod2",
|
|
Namespace: "ns1",
|
|
},
|
|
},
|
|
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "pod3ThatWeWontSee",
|
|
},
|
|
},
|
|
}
|
|
fmt.Println(FindLabelsInSet([]string{"label1", "label2", "label3"}, nsPods[0].ObjectMeta.Labels)["label3"])
|
|
AddUnsetLabelsToMap(labelSubset, []string{"label1", "label2", "label3"}, nsPods[0].ObjectMeta.Labels)
|
|
fmt.Println(labelSubset)
|
|
|
|
for _, pod := range FilterPodsByNamespace(nsPods, "ns1") {
|
|
fmt.Print(pod.Name, ",")
|
|
}
|
|
// Output:
|
|
// will_see_this
|
|
// label1=value1,label2=value2,label3=will_see_this
|
|
// pod1,pod2,
|
|
}
|