mirror of https://github.com/k3s-io/k3s
108 lines
3.8 KiB
Go
108 lines
3.8 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 framework
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import (
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"bytes"
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"io"
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"net/url"
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"strings"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/pkg/client/unversioned/remotecommand"
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remotecommandserver "k8s.io/kubernetes/pkg/kubelet/server/remotecommand"
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. "github.com/onsi/gomega"
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)
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// ExecCommandInContainer execute a command in the specified container.
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// Pass in stdin, tty if needed in the future.
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func (f *Framework) ExecCommandInContainer(podName, containerName string, cmd ...string) string {
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stdout, stderr, err := f.ExecCommandInContainerWithFullOutput(podName, containerName, cmd...)
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Logf("Exec stderr: %q", stderr)
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Expect(err).NotTo(HaveOccurred(), "fail to execute command")
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return stdout
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}
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// ExecCommandInContainerWithFullOutput executes a command in the specified container and return stdout, stderr and error
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func (f *Framework) ExecCommandInContainerWithFullOutput(podName, containerName string, cmd ...string) (string, string, error) {
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Logf("Exec running '%s'", strings.Join(cmd, " "))
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config, err := LoadConfig()
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Expect(err).NotTo(HaveOccurred(), "failed to load restclient config")
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var stdout, stderr bytes.Buffer
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var stdin io.Reader
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tty := false
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req := f.Client.RESTClient.Post().
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Resource("pods").
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Name(podName).
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Namespace(f.Namespace.Name).
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SubResource("exec").
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Param("container", containerName)
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req.VersionedParams(&api.PodExecOptions{
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Container: containerName,
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Command: cmd,
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Stdin: stdin != nil,
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Stdout: true,
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Stderr: true,
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TTY: tty,
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}, api.ParameterCodec)
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err = execute("POST", req.URL(), config, stdin, &stdout, &stderr, tty)
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return strings.TrimSpace(stdout.String()), strings.TrimSpace(stderr.String()), err
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}
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func (f *Framework) ExecShellInContainer(podName, containerName string, cmd string) string {
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return f.ExecCommandInContainer(podName, containerName, "/bin/sh", "-c", cmd)
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}
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func (f *Framework) ExecCommandInPod(podName string, cmd ...string) string {
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pod, err := f.PodClient().Get(podName)
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Expect(err).NotTo(HaveOccurred(), "failed to get pod")
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Expect(pod.Spec.Containers).NotTo(BeEmpty())
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return f.ExecCommandInContainer(podName, pod.Spec.Containers[0].Name, cmd...)
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}
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func (f *Framework) ExecCommandInPodWithFullOutput(podName string, cmd ...string) (string, string, error) {
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pod, err := f.PodClient().Get(podName)
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Expect(err).NotTo(HaveOccurred(), "failed to get pod")
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Expect(pod.Spec.Containers).NotTo(BeEmpty())
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return f.ExecCommandInContainerWithFullOutput(podName, pod.Spec.Containers[0].Name, cmd...)
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}
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func (f *Framework) ExecShellInPod(podName string, cmd string) string {
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return f.ExecCommandInPod(podName, "/bin/sh", "-c", cmd)
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}
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func (f *Framework) ExecShellInPodWithFullOutput(podName string, cmd string) (string, string, error) {
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return f.ExecCommandInPodWithFullOutput(podName, "/bin/sh", "-c", cmd)
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}
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func execute(method string, url *url.URL, config *restclient.Config, stdin io.Reader, stdout, stderr io.Writer, tty bool) error {
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exec, err := remotecommand.NewExecutor(config, method, url)
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if err != nil {
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return err
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}
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return exec.Stream(remotecommand.StreamOptions{
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SupportedProtocols: remotecommandserver.SupportedStreamingProtocols,
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Stdin: stdin,
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Stdout: stdout,
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Stderr: stderr,
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Tty: tty,
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})
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}
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