72 lines
2.2 KiB
Go
72 lines
2.2 KiB
Go
/*
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Copyright 2017 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 apiclient
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import (
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"fmt"
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"net/http"
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"time"
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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/util/wait"
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clientset "k8s.io/client-go/kubernetes"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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)
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// WaitForAPI waits for the API Server's /healthz endpoint to report "ok"
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func WaitForAPI(client clientset.Interface) {
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start := time.Now()
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wait.PollInfinite(kubeadmconstants.APICallRetryInterval, func() (bool, error) {
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healthStatus := 0
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client.Discovery().RESTClient().Get().AbsPath("/healthz").Do().StatusCode(&healthStatus)
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if healthStatus != http.StatusOK {
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return false, nil
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}
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fmt.Printf("[apiclient] All control plane components are healthy after %f seconds\n", time.Since(start).Seconds())
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return true, nil
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})
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}
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// WaitForPodsWithLabel will lookup pods with the given label and wait until they are all
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// reporting status as running.
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func WaitForPodsWithLabel(client clientset.Interface, labelKeyValPair string) {
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// TODO: Implement a timeout
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// TODO: Implement a verbosity switch
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wait.PollInfinite(kubeadmconstants.APICallRetryInterval, func() (bool, error) {
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listOpts := metav1.ListOptions{LabelSelector: labelKeyValPair}
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apiPods, err := client.CoreV1().Pods(metav1.NamespaceSystem).List(listOpts)
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if err != nil {
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fmt.Printf("[apiclient] Error getting Pods with label selector %q [%v]\n", labelKeyValPair, err)
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return false, nil
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}
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if len(apiPods.Items) == 0 {
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return false, nil
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}
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for _, pod := range apiPods.Items {
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fmt.Printf("[apiclient] Pod %s status: %s\n", pod.Name, pod.Status.Phase)
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if pod.Status.Phase != v1.PodRunning {
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return false, nil
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}
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}
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return true, nil
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})
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}
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