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