func TestServePortForwardIdleTimeout(t *testing.T) {
fw := newServerTest()
fw.fakeKubelet.streamingConnectionIdleTimeoutFunc = func() time.Duration {
return 100 * time.Millisecond
}
podNamespace := "other"
podName := "foo"
url := fw.testHTTPServer.URL + "/portForward/" + podNamespace + "/" + podName
upgradeRoundTripper := spdy.NewRoundTripper(nil)
c := &http.Client{Transport: upgradeRoundTripper}
resp, err := c.Post(url, "", nil)
if err != nil {
t.Fatalf("Got error POSTing: %v", err)
}
defer resp.Body.Close()
conn, err := upgradeRoundTripper.NewConnection(resp)
if err != nil {
t.Fatalf("Unexpected error creating streaming connection: %s", err)
}
if conn == nil {
t.Fatal("Unexpected nil connection")
}
defer conn.Close()
<-conn.CloseChan()
}
// NewExecutor connects to the provided server and upgrades the connection to
// multiplexed bidirectional streams. The current implementation uses SPDY,
// but this could be replaced with HTTP/2 once it's available, or something else.
// TODO: the common code between this and portforward could be abstracted.
func NewExecutor(config *client.Config, method string, url *url.URL) (StreamExecutor, error) {
tlsConfig, err := client.TLSConfigFor(config)
if err != nil {
return nil, err
}
upgradeRoundTripper := spdy.NewRoundTripper(tlsConfig)
wrapper, err := client.HTTPWrappersForConfig(config, upgradeRoundTripper)
if err != nil {
return nil, err
}
return &streamExecutor{
upgrader: upgradeRoundTripper,
transport: wrapper,
method: method,
url: url,
}, nil
}
func TestServeExecInContainer(t *testing.T) {
tests := []struct {
stdin bool
stdout bool
stderr bool
tty bool
responseStatusCode int
uid bool
}{
{responseStatusCode: http.StatusBadRequest},
{stdin: true, responseStatusCode: http.StatusSwitchingProtocols},
{stdout: true, responseStatusCode: http.StatusSwitchingProtocols},
{stderr: true, responseStatusCode: http.StatusSwitchingProtocols},
{stdout: true, stderr: true, responseStatusCode: http.StatusSwitchingProtocols},
{stdout: true, stderr: true, tty: true, responseStatusCode: http.StatusSwitchingProtocols},
{stdin: true, stdout: true, stderr: true, responseStatusCode: http.StatusSwitchingProtocols},
}
for i, test := range tests {
fw := newServerTest()
fw.fakeKubelet.streamingConnectionIdleTimeoutFunc = func() time.Duration {
return 0
}
podNamespace := "other"
podName := "foo"
expectedPodName := getPodName(podName, podNamespace)
expectedUid := "9b01b80f-8fb4-11e4-95ab-4200af06647"
expectedContainerName := "baz"
expectedCommand := "ls -a"
expectedStdin := "stdin"
expectedStdout := "stdout"
expectedStderr := "stderr"
execFuncDone := make(chan struct{})
clientStdoutReadDone := make(chan struct{})
clientStderrReadDone := make(chan struct{})
fw.fakeKubelet.execFunc = func(podFullName string, uid types.UID, containerName string, cmd []string, in io.Reader, out, stderr io.WriteCloser, tty bool) error {
defer close(execFuncDone)
if podFullName != expectedPodName {
t.Fatalf("%d: podFullName: expected %s, got %s", i, expectedPodName, podFullName)
}
if test.uid && string(uid) != expectedUid {
t.Fatalf("%d: uid: expected %v, got %v", i, expectedUid, uid)
}
if containerName != expectedContainerName {
t.Fatalf("%d: containerName: expected %s, got %s", i, expectedContainerName, containerName)
}
if strings.Join(cmd, " ") != expectedCommand {
t.Fatalf("%d: cmd: expected: %s, got %v", i, expectedCommand, cmd)
}
if test.stdin {
if in == nil {
t.Fatalf("%d: stdin: expected non-nil", i)
}
b := make([]byte, 10)
n, err := in.Read(b)
if err != nil {
t.Fatalf("%d: error reading from stdin: %v", i, err)
}
if e, a := expectedStdin, string(b[0:n]); e != a {
t.Fatalf("%d: stdin: expected to read %v, got %v", i, e, a)
}
} else if in != nil {
t.Fatalf("%d: stdin: expected nil: %#v", i, in)
}
if test.stdout {
if out == nil {
t.Fatalf("%d: stdout: expected non-nil", i)
}
_, err := out.Write([]byte(expectedStdout))
if err != nil {
t.Fatalf("%d:, error writing to stdout: %v", i, err)
}
out.Close()
<-clientStdoutReadDone
} else if out != nil {
t.Fatalf("%d: stdout: expected nil: %#v", i, out)
}
if tty {
if stderr != nil {
t.Fatalf("%d: tty set but received non-nil stderr: %v", i, stderr)
}
} else if test.stderr {
if stderr == nil {
t.Fatalf("%d: stderr: expected non-nil", i)
}
_, err := stderr.Write([]byte(expectedStderr))
if err != nil {
t.Fatalf("%d:, error writing to stderr: %v", i, err)
}
stderr.Close()
<-clientStderrReadDone
} else if stderr != nil {
t.Fatalf("%d: stderr: expected nil: %#v", i, stderr)
}
return nil
}
var url string
if test.uid {
url = fw.testHTTPServer.URL + "/exec/" + podNamespace + "/" + podName + "/" + expectedUid + "/" + expectedContainerName + "?command=ls&command=-a"
} else {
url = fw.testHTTPServer.URL + "/exec/" + podNamespace + "/" + podName + "/" + expectedContainerName + "?command=ls&command=-a"
}
if test.stdin {
url += "&" + api.ExecStdinParam + "=1"
}
if test.stdout {
url += "&" + api.ExecStdoutParam + "=1"
}
if test.stderr && !test.tty {
url += "&" + api.ExecStderrParam + "=1"
}
if test.tty {
url += "&" + api.ExecTTYParam + "=1"
}
var (
resp *http.Response
err error
upgradeRoundTripper httpstream.UpgradeRoundTripper
c *http.Client
)
if test.responseStatusCode != http.StatusSwitchingProtocols {
c = &http.Client{}
} else {
upgradeRoundTripper = spdy.NewRoundTripper(nil)
c = &http.Client{Transport: upgradeRoundTripper}
}
resp, err = c.Post(url, "", nil)
if err != nil {
t.Fatalf("%d: Got error POSTing: %v", i, err)
}
defer resp.Body.Close()
_, err = ioutil.ReadAll(resp.Body)
if err != nil {
t.Errorf("%d: Error reading response body: %v", i, err)
}
if e, a := test.responseStatusCode, resp.StatusCode; e != a {
t.Fatalf("%d: response status: expected %v, got %v", i, e, a)
}
if test.responseStatusCode != http.StatusSwitchingProtocols {
continue
}
conn, err := upgradeRoundTripper.NewConnection(resp)
if err != nil {
t.Fatalf("Unexpected error creating streaming connection: %s", err)
}
if conn == nil {
t.Fatalf("%d: unexpected nil conn", i)
}
defer conn.Close()
h := http.Header{}
h.Set(api.StreamType, api.StreamTypeError)
errorStream, err := conn.CreateStream(h)
if err != nil {
t.Fatalf("%d: error creating error stream: %v", i, err)
}
defer errorStream.Reset()
if test.stdin {
h.Set(api.StreamType, api.StreamTypeStdin)
stream, err := conn.CreateStream(h)
if err != nil {
t.Fatalf("%d: error creating stdin stream: %v", i, err)
}
defer stream.Reset()
_, err = stream.Write([]byte(expectedStdin))
if err != nil {
t.Fatalf("%d: error writing to stdin stream: %v", i, err)
}
}
var stdoutStream httpstream.Stream
if test.stdout {
h.Set(api.StreamType, api.StreamTypeStdout)
stdoutStream, err = conn.CreateStream(h)
if err != nil {
t.Fatalf("%d: error creating stdout stream: %v", i, err)
}
defer stdoutStream.Reset()
}
var stderrStream httpstream.Stream
if test.stderr && !test.tty {
h.Set(api.StreamType, api.StreamTypeStderr)
stderrStream, err = conn.CreateStream(h)
if err != nil {
t.Fatalf("%d: error creating stderr stream: %v", i, err)
}
defer stderrStream.Reset()
}
if test.stdout {
output := make([]byte, 10)
n, err := stdoutStream.Read(output)
close(clientStdoutReadDone)
if err != nil {
t.Fatalf("%d: error reading from stdout stream: %v", i, err)
}
if e, a := expectedStdout, string(output[0:n]); e != a {
t.Fatalf("%d: stdout: expected '%v', got '%v'", i, e, a)
}
}
if test.stderr && !test.tty {
output := make([]byte, 10)
n, err := stderrStream.Read(output)
close(clientStderrReadDone)
if err != nil {
t.Fatalf("%d: error reading from stderr stream: %v", i, err)
}
if e, a := expectedStderr, string(output[0:n]); e != a {
t.Fatalf("%d: stderr: expected '%v', got '%v'", i, e, a)
}
}
<-execFuncDone
}
}
func TestServePortForward(t *testing.T) {
tests := []struct {
port string
uid bool
clientData string
containerData string
shouldError bool
}{
{port: "", shouldError: true},
{port: "abc", shouldError: true},
{port: "-1", shouldError: true},
{port: "65536", shouldError: true},
{port: "0", shouldError: true},
{port: "1", shouldError: false},
{port: "8000", shouldError: false},
{port: "8000", clientData: "client data", containerData: "container data", shouldError: false},
{port: "65535", shouldError: false},
{port: "65535", uid: true, shouldError: false},
}
podNamespace := "other"
podName := "foo"
expectedPodName := getPodName(podName, podNamespace)
expectedUid := "9b01b80f-8fb4-11e4-95ab-4200af06647"
for i, test := range tests {
fw := newServerTest()
fw.fakeKubelet.streamingConnectionIdleTimeoutFunc = func() time.Duration {
return 0
}
portForwardFuncDone := make(chan struct{})
fw.fakeKubelet.portForwardFunc = func(name string, uid types.UID, port uint16, stream io.ReadWriteCloser) error {
defer close(portForwardFuncDone)
if e, a := expectedPodName, name; e != a {
t.Fatalf("%d: pod name: expected '%v', got '%v'", i, e, a)
}
if e, a := expectedUid, uid; test.uid && e != string(a) {
t.Fatalf("%d: uid: expected '%v', got '%v'", i, e, a)
}
p, err := strconv.ParseUint(test.port, 10, 16)
if err != nil {
t.Fatalf("%d: error parsing port string '%s': %v", i, test.port, err)
}
if e, a := uint16(p), port; e != a {
t.Fatalf("%d: port: expected '%v', got '%v'", i, e, a)
}
if test.clientData != "" {
fromClient := make([]byte, 32)
n, err := stream.Read(fromClient)
if err != nil {
t.Fatalf("%d: error reading client data: %v", i, err)
}
if e, a := test.clientData, string(fromClient[0:n]); e != a {
t.Fatalf("%d: client data: expected to receive '%v', got '%v'", i, e, a)
}
}
if test.containerData != "" {
_, err := stream.Write([]byte(test.containerData))
if err != nil {
t.Fatalf("%d: error writing container data: %v", i, err)
}
}
return nil
}
var url string
if test.uid {
url = fmt.Sprintf("%s/portForward/%s/%s/%s", fw.testHTTPServer.URL, podNamespace, podName, expectedUid)
} else {
url = fmt.Sprintf("%s/portForward/%s/%s", fw.testHTTPServer.URL, podNamespace, podName)
}
upgradeRoundTripper := spdy.NewRoundTripper(nil)
c := &http.Client{Transport: upgradeRoundTripper}
resp, err := c.Post(url, "", nil)
if err != nil {
t.Fatalf("%d: Got error POSTing: %v", i, err)
}
defer resp.Body.Close()
conn, err := upgradeRoundTripper.NewConnection(resp)
if err != nil {
t.Fatalf("Unexpected error creating streaming connection: %s", err)
}
if conn == nil {
t.Fatalf("%d: Unexpected nil connection", i)
}
defer conn.Close()
headers := http.Header{}
headers.Set("streamType", "error")
headers.Set("port", test.port)
errorStream, err := conn.CreateStream(headers)
_ = errorStream
haveErr := err != nil
if e, a := test.shouldError, haveErr; e != a {
t.Fatalf("%d: create stream: expected err=%t, got %t: %v", i, e, a, err)
}
if test.shouldError {
continue
}
headers.Set("streamType", "data")
headers.Set("port", test.port)
dataStream, err := conn.CreateStream(headers)
haveErr = err != nil
if e, a := test.shouldError, haveErr; e != a {
t.Fatalf("%d: create stream: expected err=%t, got %t: %v", i, e, a, err)
}
if test.clientData != "" {
_, err := dataStream.Write([]byte(test.clientData))
if err != nil {
t.Fatalf("%d: unexpected error writing client data: %v", i, err)
}
}
if test.containerData != "" {
fromContainer := make([]byte, 32)
n, err := dataStream.Read(fromContainer)
if err != nil {
t.Fatalf("%d: unexpected error reading container data: %v", i, err)
}
if e, a := test.containerData, string(fromContainer[0:n]); e != a {
t.Fatalf("%d: expected to receive '%v' from container, got '%v'", i, e, a)
}
}
<-portForwardFuncDone
}
}