mirror of https://github.com/kubernetes/kops.git
98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
/*
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Copyright 2021 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 watchers
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import (
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"context"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes/fake"
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"k8s.io/kops/dns-controller/pkg/dns"
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)
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func TestPodController(t *testing.T) {
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ctx := context.Background()
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pspec := &corev1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "somepod",
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Namespace: "kube-system",
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Annotations: map[string]string{
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"dns.alpha.kubernetes.io/internal": "internal.a.foo.com",
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"dns.alpha.kubernetes.io/external": "a.foo.com",
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},
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},
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Spec: corev1.PodSpec{
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HostNetwork: true,
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NodeName: "my-node",
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},
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Status: corev1.PodStatus{
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PodIP: "10.0.0.1",
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PodIPs: []corev1.PodIP{
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{IP: "10.0.0.1"},
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{IP: "2001:db8:0:0:0:ff00:42:8329"},
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},
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},
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}
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client := fake.NewSimpleClientset()
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pods := client.CoreV1().Pods("kube-system")
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_, err := pods.Create(ctx, pspec, metav1.CreateOptions{})
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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ch := make(chan struct{})
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scope := &fakeScope{
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readyCh: ch,
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records: make(map[string][]dns.Record),
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}
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dnsctx := &fakeDNSContext{
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scope: scope,
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}
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c, err := NewPodController(client, dnsctx, "kube-system")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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go c.Run()
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select {
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case <-ch:
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case <-time.After(time.Second):
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t.Fatalf("update was not marked as complete")
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}
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c.Stop()
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want := map[string][]dns.Record{
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"kube-system/somepod": {
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{RecordType: "_alias", FQDN: "a.foo.com.", Value: "node/my-node/external"},
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{RecordType: "_alias", FQDN: "internal.a.foo.com.", Value: "node/my-node/internal"},
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},
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}
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if diff := cmp.Diff(scope.records, want); diff != "" {
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t.Fatalf("generated records did not match expected; diff=%s", diff)
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}
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}
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