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Merge pull request #48641 from smarterclayton/refactor_exec

Browse Source 
Automatic merge from submit-queue (batch tested with PRs 48594, 47042, 48801, 48641, 48243)

Prepare to introduce websockets for exec and portforward

Refactor the code in remotecommand to better represent the structure of
what is common between portforward and exec.

Ref #48633
This commit is contained in:
Kubernetes Submit Queue 2017-07-12 14:08:10 -07:00 committed by GitHub
commit 77b6b126cb
16 changed files with 227 additions and 164 deletions
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1
hack/.linted_packages
View File

@ -436,6 +436,7 @@ staging/src/k8s.io/client-go/rest/watch
staging/src/k8s.io/client-go/tools/auth
staging/src/k8s.io/client-go/tools/metrics
staging/src/k8s.io/client-go/tools/remotecommand
staging/src/k8s.io/client-go/transport/spdy
staging/src/k8s.io/client-go/util/cert
staging/src/k8s.io/client-go/util/homedir
staging/src/k8s.io/client-go/util/workqueue

1
pkg/client/tests/BUILD
View File

@ -40,6 +40,7 @@ go_test(
"//vendor/k8s.io/client-go/tools/cache:go_default_library",
"//vendor/k8s.io/client-go/tools/portforward:go_default_library",
"//vendor/k8s.io/client-go/tools/remotecommand:go_default_library",
"//vendor/k8s.io/client-go/transport/spdy:go_default_library",
"//vendor/k8s.io/client-go/util/testing:go_default_library",
],
)

18
pkg/client/tests/portfoward_test.go
View File

@ -33,7 +33,7 @@ import (
"k8s.io/apimachinery/pkg/types"
restclient "k8s.io/client-go/rest"
. "k8s.io/client-go/tools/portforward"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/client-go/transport/spdy"
"k8s.io/kubernetes/pkg/kubelet/server/portforward"
)
@ -131,16 +131,17 @@ func TestForwardPorts(t *testing.T) {
for testName, test := range tests {
server := httptest.NewServer(fakePortForwardServer(t, testName, test.serverSends, test.clientSends))
url, _ := url.Parse(server.URL)
exec, err := remotecommand.NewExecutor(&restclient.Config{}, "POST", url)
transport, upgrader, err := spdy.RoundTripperFor(&restclient.Config{})
if err != nil {
t.Fatal(err)
}
url, _ := url.Parse(server.URL)
dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, "POST", url)
stopChan := make(chan struct{}, 1)
readyChan := make(chan struct{})
pf, err := New(exec, test.ports, stopChan, readyChan, os.Stdout, os.Stderr)
pf, err := New(dialer, test.ports, stopChan, readyChan, os.Stdout, os.Stderr)
if err != nil {
t.Fatalf("%s: unexpected error calling New: %v", testName, err)
}
@ -201,17 +202,18 @@ func TestForwardPortsReturnsErrorWhenAllBindsFailed(t *testing.T) {
server := httptest.NewServer(fakePortForwardServer(t, "allBindsFailed", nil, nil))
defer server.Close()
url, _ := url.Parse(server.URL)
exec, err := remotecommand.NewExecutor(&restclient.Config{}, "POST", url)
transport, upgrader, err := spdy.RoundTripperFor(&restclient.Config{})
if err != nil {
t.Fatal(err)
}
url, _ := url.Parse(server.URL)
dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, "POST", url)
stopChan1 := make(chan struct{}, 1)
defer close(stopChan1)
readyChan1 := make(chan struct{})
pf1, err := New(exec, []string{"5555"}, stopChan1, readyChan1, os.Stdout, os.Stderr)
pf1, err := New(dialer, []string{"5555"}, stopChan1, readyChan1, os.Stdout, os.Stderr)
if err != nil {
t.Fatalf("error creating pf1: %v", err)
}
@ -220,7 +222,7 @@ func TestForwardPortsReturnsErrorWhenAllBindsFailed(t *testing.T) {
stopChan2 := make(chan struct{}, 1)
readyChan2 := make(chan struct{})
pf2, err := New(exec, []string{"5555"}, stopChan2, readyChan2, os.Stdout, os.Stderr)
pf2, err := New(dialer, []string{"5555"}, stopChan2, readyChan2, os.Stdout, os.Stderr)
if err != nil {
t.Fatalf("error creating pf2: %v", err)
}

33
pkg/client/tests/remotecommand_test.go
View File

@ -37,6 +37,7 @@ import (
remotecommandconsts "k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
remoteclient "k8s.io/client-go/tools/remotecommand"
"k8s.io/client-go/transport/spdy"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/kubelet/server/remotecommand"
@ -255,17 +256,16 @@ func TestStream(t *testing.T) {
conf := &restclient.Config{
Host: server.URL,
}
e, err := remoteclient.NewExecutor(conf, "POST", req.URL())
e, err := remoteclient.NewSPDYExecutorForProtocols(conf, "POST", req.URL(), testCase.ClientProtocols...)
if err != nil {
t.Errorf("%s: unexpected error: %v", name, err)
continue
}
err = e.Stream(remoteclient.StreamOptions{
SupportedProtocols: testCase.ClientProtocols,
Stdin: streamIn,
Stdout: streamOut,
Stderr: streamErr,
Tty: testCase.Tty,
Stdin: streamIn,
Stdout: streamOut,
Stderr: streamErr,
Tty: testCase.Tty,
})
hasErr := err != nil
@ -311,11 +311,13 @@ type fakeUpgrader struct {
conn httpstream.Connection
err, connErr error
checkResponse bool
called bool
t *testing.T
}
func (u *fakeUpgrader) RoundTrip(req *http.Request) (*http.Response, error) {
u.called = true
u.req = req
return u.resp, u.err
}
@ -344,27 +346,16 @@ func TestDial(t *testing.T) {
Body: ioutil.NopCloser(&bytes.Buffer{}),
},
}
var called bool
testFn := func(rt http.RoundTripper) http.RoundTripper {
if rt != upgrader {
t.Fatalf("unexpected round tripper: %#v", rt)
}
called = true
return rt
}
exec, err := remoteclient.NewStreamExecutor(upgrader, testFn, "POST", &url.URL{Host: "something.com", Scheme: "https"})
if err != nil {
t.Fatal(err)
}
conn, protocol, err := exec.Dial("protocol1")
dialer := spdy.NewDialer(upgrader, &http.Client{Transport: upgrader}, "POST", &url.URL{Host: "something.com", Scheme: "https"})
conn, protocol, err := dialer.Dial("protocol1")
if err != nil {
t.Fatal(err)
}
if conn != upgrader.conn {
t.Errorf("unexpected connection: %#v", conn)
}
if !called {
t.Errorf("wrapper not called")
if !upgrader.called {
t.Errorf("request not called")
}
_ = protocol
}

2
pkg/kubectl/cmd/BUILD
View File

@ -131,7 +131,6 @@ go_library(
"//vendor/k8s.io/apimachinery/pkg/util/json:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/jsonmergepatch:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/mergepatch:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/remotecommand:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/strategicpatch:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/validation:go_default_library",
@ -145,6 +144,7 @@ go_library(
"//vendor/k8s.io/client-go/tools/clientcmd:go_default_library",
"//vendor/k8s.io/client-go/tools/portforward:go_default_library",
"//vendor/k8s.io/client-go/tools/remotecommand:go_default_library",
"//vendor/k8s.io/client-go/transport/spdy:go_default_library",
],
)

14
pkg/kubectl/cmd/attach.go
View File

@ -28,7 +28,6 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
remotecommandconsts "k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/kubernetes/pkg/api"
@ -97,17 +96,16 @@ type RemoteAttach interface {
type DefaultRemoteAttach struct{}
func (*DefaultRemoteAttach) Attach(method string, url *url.URL, config *restclient.Config, stdin io.Reader, stdout, stderr io.Writer, tty bool, terminalSizeQueue remotecommand.TerminalSizeQueue) error {
exec, err := remotecommand.NewExecutor(config, method, url)
exec, err := remotecommand.NewSPDYExecutor(config, method, url)
if err != nil {
return err
}
return exec.Stream(remotecommand.StreamOptions{
SupportedProtocols: remotecommandconsts.SupportedStreamingProtocols,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
TerminalSizeQueue: terminalSizeQueue,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
TerminalSizeQueue: terminalSizeQueue,
})
}

14
pkg/kubectl/cmd/exec.go
View File

@ -25,7 +25,6 @@ import (
"github.com/spf13/cobra"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
remotecommandconsts "k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/kubernetes/pkg/api"
@ -101,17 +100,16 @@ type RemoteExecutor interface {
type DefaultRemoteExecutor struct{}
func (*DefaultRemoteExecutor) Execute(method string, url *url.URL, config *restclient.Config, stdin io.Reader, stdout, stderr io.Writer, tty bool, terminalSizeQueue remotecommand.TerminalSizeQueue) error {
exec, err := remotecommand.NewExecutor(config, method, url)
exec, err := remotecommand.NewSPDYExecutor(config, method, url)
if err != nil {
return err
}
return exec.Stream(remotecommand.StreamOptions{
SupportedProtocols: remotecommandconsts.SupportedStreamingProtocols,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
TerminalSizeQueue: terminalSizeQueue,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
TerminalSizeQueue: terminalSizeQueue,
})
}

6
pkg/kubectl/cmd/portforward.go
View File

@ -19,6 +19,7 @@ package cmd
import (
"fmt"
"io"
"net/http"
"net/url"
"os"
"os/signal"
@ -28,7 +29,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/portforward"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/client-go/transport/spdy"
"k8s.io/kubernetes/pkg/api"
coreclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
@ -102,10 +103,11 @@ type defaultPortForwarder struct {
}
func (f *defaultPortForwarder) ForwardPorts(method string, url *url.URL, opts PortForwardOptions) error {
dialer, err := remotecommand.NewExecutor(opts.Config, method, url)
transport, upgrader, err := spdy.RoundTripperFor(opts.Config)
if err != nil {
return err
}
dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, method, url)
fw, err := portforward.New(dialer, opts.Ports, opts.StopChannel, opts.ReadyChannel, f.cmdOut, f.cmdErr)
if err != nil {
return err

2
pkg/kubelet/server/streaming/BUILD
View File

@ -45,9 +45,9 @@ go_test(
"//vendor/github.com/stretchr/testify/assert:go_default_library",
"//vendor/github.com/stretchr/testify/require:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/clock:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/remotecommand:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
"//vendor/k8s.io/client-go/tools/remotecommand:go_default_library",
"//vendor/k8s.io/client-go/transport/spdy:go_default_library",
],
)

18
pkg/kubelet/server/streaming/server_test.go
View File

@ -30,9 +30,9 @@ import (
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
remotecommandconsts "k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/client-go/transport/spdy"
"k8s.io/kubernetes/pkg/api"
runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
kubeletportforward "k8s.io/kubernetes/pkg/kubelet/server/portforward"
@ -237,9 +237,10 @@ func TestServePortForward(t *testing.T) {
reqURL, err := url.Parse(resp.Url)
require.NoError(t, err)
exec, err := remotecommand.NewExecutor(&restclient.Config{}, "POST", reqURL)
transport, upgrader, err := spdy.RoundTripperFor(&restclient.Config{})
require.NoError(t, err)
streamConn, _, err := exec.Dial(kubeletportforward.ProtocolV1Name)
dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, "POST", reqURL)
streamConn, _, err := dialer.Dial(kubeletportforward.ProtocolV1Name)
require.NoError(t, err)
defer streamConn.Close()
@ -297,15 +298,14 @@ func runRemoteCommandTest(t *testing.T, commandType string) {
go func() {
defer wg.Done()
exec, err := remotecommand.NewExecutor(&restclient.Config{}, "POST", reqURL)
exec, err := remotecommand.NewSPDYExecutor(&restclient.Config{}, "POST", reqURL)
require.NoError(t, err)
opts := remotecommand.StreamOptions{
SupportedProtocols: remotecommandconsts.SupportedStreamingProtocols,
Stdin: stdinR,
Stdout: stdoutW,
Stderr: stderrW,
Tty: false,
Stdin: stdinR,
Stdout: stdoutW,
Stderr: stderrW,
Tty: false,
}
require.NoError(t, exec.Stream(opts))
}()

2
staging/src/k8s.io/client-go/tools/remotecommand/BUILD
View File

@ -41,11 +41,11 @@ go_library(
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/httpstream:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/remotecommand:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
"//vendor/k8s.io/client-go/transport:go_default_library",
"//vendor/k8s.io/client-go/transport/spdy:go_default_library",
"//vendor/k8s.io/client-go/util/exec:go_default_library",
],
)

154
staging/src/k8s.io/client-go/tools/remotecommand/remotecommand.go
View File

@ -25,22 +25,21 @@ import (
"github.com/golang/glog"
"k8s.io/apimachinery/pkg/util/httpstream"
"k8s.io/apimachinery/pkg/util/httpstream/spdy"
"k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/transport"
spdy "k8s.io/client-go/transport/spdy"
)
// StreamOptions holds information pertaining to the current streaming session: supported stream
// protocols, input/output streams, if the client is requesting a TTY, and a terminal size queue to
// support terminal resizing.
type StreamOptions struct {
SupportedProtocols []string
Stdin io.Reader
Stdout io.Writer
Stderr io.Writer
Tty bool
TerminalSizeQueue TerminalSizeQueue
Stdin io.Reader
Stdout io.Writer
Stderr io.Writer
Tty bool
TerminalSizeQueue TerminalSizeQueue
}
// Executor is an interface for transporting shell-style streams.
@ -52,95 +51,6 @@ type Executor interface {
Stream(options StreamOptions) error
}
// StreamExecutor supports the ability to dial an httpstream connection and the ability to
// run a command line stream protocol over that dialer.
type StreamExecutor interface {
Executor
httpstream.Dialer
}
// streamExecutor handles transporting standard shell streams over an httpstream connection.
type streamExecutor struct {
upgrader httpstream.UpgradeRoundTripper
transport http.RoundTripper
method string
url *url.URL
}
// 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 *restclient.Config, method string, url *url.URL) (StreamExecutor, error) {
tlsConfig, err := restclient.TLSConfigFor(config)
if err != nil {
return nil, err
}
upgradeRoundTripper := spdy.NewRoundTripper(tlsConfig, true)
wrapper, err := restclient.HTTPWrappersForConfig(config, upgradeRoundTripper)
if err != nil {
return nil, err
}
return &streamExecutor{
upgrader: upgradeRoundTripper,
transport: wrapper,
method: method,
url: url,
}, nil
}
// NewStreamExecutor upgrades the request so that it supports multiplexed bidirectional
// streams. This method takes a stream upgrader and an optional function that is invoked
// to wrap the round tripper. This method may be used by clients that are lower level than
// Kubernetes clients or need to provide their own upgrade round tripper.
func NewStreamExecutor(upgrader httpstream.UpgradeRoundTripper, fn func(http.RoundTripper) http.RoundTripper, method string, url *url.URL) (StreamExecutor, error) {
rt := http.RoundTripper(upgrader)
if fn != nil {
rt = fn(rt)
}
return &streamExecutor{
upgrader: upgrader,
transport: rt,
method: method,
url: url,
}, nil
}
// Dial opens a connection to a remote server and attempts to negotiate a SPDY
// connection. Upon success, it returns the connection and the protocol
// selected by the server.
func (e *streamExecutor) Dial(protocols ...string) (httpstream.Connection, string, error) {
rt := transport.DebugWrappers(e.transport)
// TODO the client probably shouldn't be created here, as it doesn't allow
// flexibility to allow callers to configure it.
client := &http.Client{Transport: rt}
req, err := http.NewRequest(e.method, e.url.String(), nil)
if err != nil {
return nil, "", fmt.Errorf("error creating request: %v", err)
}
for i := range protocols {
req.Header.Add(httpstream.HeaderProtocolVersion, protocols[i])
}
resp, err := client.Do(req)
if err != nil {
return nil, "", fmt.Errorf("error sending request: %v", err)
}
defer resp.Body.Close()
conn, err := e.upgrader.NewConnection(resp)
if err != nil {
return nil, "", err
}
return conn, resp.Header.Get(httpstream.HeaderProtocolVersion), nil
}
type streamCreator interface {
CreateStream(headers http.Header) (httpstream.Stream, error)
}
@ -149,10 +59,60 @@ type streamProtocolHandler interface {
stream(conn streamCreator) error
}
// streamExecutor handles transporting standard shell streams over an httpstream connection.
type streamExecutor struct {
upgrader spdy.Upgrader
transport http.RoundTripper
method string
url *url.URL
protocols []string
}
// NewSPDYExecutor connects to the provided server and upgrades the connection to
// multiplexed bidirectional streams.
func NewSPDYExecutor(config *restclient.Config, method string, url *url.URL) (Executor, error) {
return NewSPDYExecutorForProtocols(
config, method, url,
remotecommand.StreamProtocolV4Name,
remotecommand.StreamProtocolV3Name,
remotecommand.StreamProtocolV2Name,
remotecommand.StreamProtocolV1Name,
)
}
// NewSPDYExecutorForProtocols connects to the provided server and upgrades the connection to
// multiplexed bidirectional streams using only the provided protocols. Exposed for testing, most
// callers should use NewSPDYExecutor.
func NewSPDYExecutorForProtocols(config *restclient.Config, method string, url *url.URL, protocols ...string) (Executor, error) {
wrapper, upgradeRoundTripper, err := spdy.RoundTripperFor(config)
if err != nil {
return nil, err
}
wrapper = transport.DebugWrappers(wrapper)
return &streamExecutor{
upgrader: upgradeRoundTripper,
transport: wrapper,
method: method,
url: url,
protocols: protocols,
}, nil
}
// Stream opens a protocol streamer to the server and streams until a client closes
// the connection or the server disconnects.
func (e *streamExecutor) Stream(options StreamOptions) error {
conn, protocol, err := e.Dial(options.SupportedProtocols...)
req, err := http.NewRequest(e.method, e.url.String(), nil)
if err != nil {
return fmt.Errorf("error creating request: %v", err)
}
conn, protocol, err := spdy.Negotiate(
e.upgrader,
&http.Client{Transport: e.transport},
req,
e.protocols...,
)
if err != nil {
return err
}

19
staging/src/k8s.io/client-go/transport/spdy/BUILD Normal file
View File

@ -0,0 +1,19 @@
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
)
go_library(
name = "go_default_library",
srcs = ["spdy.go"],
tags = ["automanaged"],
deps = [
"//vendor/k8s.io/apimachinery/pkg/util/httpstream:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/httpstream/spdy:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
],
)

94
staging/src/k8s.io/client-go/transport/spdy/spdy.go Normal file
View File

@ -0,0 +1,94 @@
/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package spdy
import (
"fmt"
"net/http"
"net/url"
"k8s.io/apimachinery/pkg/util/httpstream"
"k8s.io/apimachinery/pkg/util/httpstream/spdy"
restclient "k8s.io/client-go/rest"
)
// Upgrader validates a response from the server after a SPDY upgrade.
type Upgrader interface {
// NewConnection validates the response and creates a new Connection.
NewConnection(resp *http.Response) (httpstream.Connection, error)
}
// RoundTripperFor returns a round tripper and upgrader to use with SPDY.
func RoundTripperFor(config *restclient.Config) (http.RoundTripper, Upgrader, error) {
tlsConfig, err := restclient.TLSConfigFor(config)
if err != nil {
return nil, nil, err
}
upgradeRoundTripper := spdy.NewRoundTripper(tlsConfig, true)
wrapper, err := restclient.HTTPWrappersForConfig(config, upgradeRoundTripper)
if err != nil {
return nil, nil, err
}
return wrapper, upgradeRoundTripper, nil
}
// dialer implements the httpstream.Dialer interface.
type dialer struct {
client *http.Client
upgrader Upgrader
method string
url *url.URL
}
var _ httpstream.Dialer = &dialer{}
// NewDialer will create a dialer that connects to the provided URL and upgrades the connection to SPDY.
func NewDialer(upgrader Upgrader, client *http.Client, method string, url *url.URL) httpstream.Dialer {
return &dialer{
client: client,
upgrader: upgrader,
method: method,
url: url,
}
}
func (d *dialer) Dial(protocols ...string) (httpstream.Connection, string, error) {
req, err := http.NewRequest(d.method, d.url.String(), nil)
if err != nil {
return nil, "", fmt.Errorf("error creating request: %v", err)
}
return Negotiate(d.upgrader, d.client, req, protocols...)
}
// Negotiate opens a connection to a remote server and attempts to negotiate
// a SPDY connection. Upon success, it returns the connection and the protocol selected by
// the server. The client transport must use the upgradeRoundTripper - see RoundTripperFor.
func Negotiate(upgrader Upgrader, client *http.Client, req *http.Request, protocols ...string) (httpstream.Connection, string, error) {
for i := range protocols {
req.Header.Add(httpstream.HeaderProtocolVersion, protocols[i])
}
resp, err := client.Do(req)
if err != nil {
return nil, "", fmt.Errorf("error sending request: %v", err)
}
defer resp.Body.Close()
conn, err := upgrader.NewConnection(resp)
if err != nil {
return nil, "", err
}
return conn, resp.Header.Get(httpstream.HeaderProtocolVersion), nil
}

1
test/e2e/framework/BUILD
View File

@ -123,7 +123,6 @@ go_library(
"//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/rand:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/remotecommand:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/uuid:go_default_library",

12
test/e2e/framework/exec_util.go
View File

@ -24,7 +24,6 @@ import (
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
remocommandconsts "k8s.io/apimachinery/pkg/util/remotecommand"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/remotecommand"
"k8s.io/kubernetes/pkg/api"
@ -135,15 +134,14 @@ func (f *Framework) ExecShellInPodWithFullOutput(podName string, cmd string) (st
}
func execute(method string, url *url.URL, config *restclient.Config, stdin io.Reader, stdout, stderr io.Writer, tty bool) error {
exec, err := remotecommand.NewExecutor(config, method, url)
exec, err := remotecommand.NewSPDYExecutor(config, method, url)
if err != nil {
return err
}
return exec.Stream(remotecommand.StreamOptions{
SupportedProtocols: remocommandconsts.SupportedStreamingProtocols,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
Stdin: stdin,
Stdout: stdout,
Stderr: stderr,
Tty: tty,
})
}