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88 lines
2.6 KiB
Go
88 lines
2.6 KiB
Go
/*
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Copyright The Helm 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 portforwarder
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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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"k8s.io/client-go/kubernetes"
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corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/client-go/rest"
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"k8s.io/helm/pkg/kube"
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"k8s.io/helm/pkg/tiller/environment"
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)
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var (
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tillerPodLabels = labels.Set{"app": "helm", "name": "tiller"}
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)
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// New creates a new and initialized tunnel.
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func New(namespace string, client kubernetes.Interface, config *rest.Config) (*kube.Tunnel, error) {
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podName, err := GetTillerPodName(client.CoreV1(), namespace)
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if err != nil {
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return nil, err
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}
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t := kube.NewTunnel(client.CoreV1().RESTClient(), config, namespace, podName, environment.DefaultTillerPort)
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return t, t.ForwardPort()
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}
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// GetTillerPodName fetches the name of tiller pod running in the given namespace.
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func GetTillerPodName(client corev1.PodsGetter, namespace string) (string, error) {
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selector := tillerPodLabels.AsSelector()
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pod, err := getFirstRunningPod(client, namespace, selector)
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if err != nil {
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return "", err
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}
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return pod.ObjectMeta.GetName(), nil
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}
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// GetTillerPodImage fetches the image of tiller pod running in the given namespace.
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func GetTillerPodImage(client corev1.PodsGetter, namespace string) (string, error) {
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selector := tillerPodLabels.AsSelector()
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pod, err := getFirstRunningPod(client, namespace, selector)
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if err != nil {
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return "", err
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}
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for _, c := range pod.Spec.Containers {
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if c.Name == "tiller" {
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return c.Image, nil
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}
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}
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return "", fmt.Errorf("could not find a tiller pod")
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}
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func getFirstRunningPod(client corev1.PodsGetter, namespace string, selector labels.Selector) (*v1.Pod, error) {
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options := metav1.ListOptions{LabelSelector: selector.String()}
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pods, err := client.Pods(namespace).List(options)
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if err != nil {
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return nil, err
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}
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if len(pods.Items) < 1 {
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return nil, fmt.Errorf("could not find tiller")
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}
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for _, p := range pods.Items {
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if isPodReady(&p) {
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return &p, nil
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}
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}
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return nil, fmt.Errorf("could not find a ready tiller pod")
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}
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