210 lines
7.1 KiB
Go
210 lines
7.1 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"context"
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"io"
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"net"
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"net/http"
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"strings"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/request"
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"github.com/docker/docker/pkg/stdcopy"
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"github.com/docker/docker/pkg/testutil"
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"github.com/go-check/check"
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"golang.org/x/net/websocket"
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)
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func (s *DockerSuite) TestGetContainersAttachWebsocket(c *check.C) {
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testRequires(c, DaemonIsLinux)
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out, _ := dockerCmd(c, "run", "-dit", "busybox", "cat")
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rwc, err := request.SockConn(time.Duration(10*time.Second), daemonHost())
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c.Assert(err, checker.IsNil)
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cleanedContainerID := strings.TrimSpace(out)
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config, err := websocket.NewConfig(
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"/containers/"+cleanedContainerID+"/attach/ws?stream=1&stdin=1&stdout=1&stderr=1",
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"http://localhost",
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)
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c.Assert(err, checker.IsNil)
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ws, err := websocket.NewClient(config, rwc)
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c.Assert(err, checker.IsNil)
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defer ws.Close()
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expected := []byte("hello")
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actual := make([]byte, len(expected))
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outChan := make(chan error)
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go func() {
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_, err := io.ReadFull(ws, actual)
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outChan <- err
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close(outChan)
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}()
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inChan := make(chan error)
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go func() {
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_, err := ws.Write(expected)
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inChan <- err
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close(inChan)
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}()
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select {
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case err := <-inChan:
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c.Assert(err, checker.IsNil)
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case <-time.After(5 * time.Second):
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c.Fatal("Timeout writing to ws")
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}
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select {
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case err := <-outChan:
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c.Assert(err, checker.IsNil)
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case <-time.After(5 * time.Second):
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c.Fatal("Timeout reading from ws")
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}
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c.Assert(actual, checker.DeepEquals, expected, check.Commentf("Websocket didn't return the expected data"))
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}
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// regression gh14320
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func (s *DockerSuite) TestPostContainersAttachContainerNotFound(c *check.C) {
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client, err := request.NewHTTPClient(daemonHost())
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c.Assert(err, checker.IsNil)
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req, err := request.New(daemonHost(), "/containers/doesnotexist/attach", request.Method(http.MethodPost))
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resp, err := client.Do(req)
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// connection will shutdown, err should be "persistent connection closed"
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c.Assert(resp.StatusCode, checker.Equals, http.StatusNotFound)
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content, err := testutil.ReadBody(resp.Body)
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c.Assert(err, checker.IsNil)
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expected := "No such container: doesnotexist\r\n"
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c.Assert(string(content), checker.Equals, expected)
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}
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func (s *DockerSuite) TestGetContainersWsAttachContainerNotFound(c *check.C) {
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status, body, err := request.SockRequest("GET", "/containers/doesnotexist/attach/ws", nil, daemonHost())
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c.Assert(status, checker.Equals, http.StatusNotFound)
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c.Assert(err, checker.IsNil)
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expected := "No such container: doesnotexist"
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c.Assert(getErrorMessage(c, body), checker.Contains, expected)
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}
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func (s *DockerSuite) TestPostContainersAttach(c *check.C) {
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testRequires(c, DaemonIsLinux)
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expectSuccess := func(conn net.Conn, br *bufio.Reader, stream string, tty bool) {
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defer conn.Close()
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expected := []byte("success")
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_, err := conn.Write(expected)
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c.Assert(err, checker.IsNil)
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conn.SetReadDeadline(time.Now().Add(time.Second))
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lenHeader := 0
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if !tty {
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lenHeader = 8
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}
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actual := make([]byte, len(expected)+lenHeader)
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_, err = io.ReadFull(br, actual)
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c.Assert(err, checker.IsNil)
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if !tty {
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fdMap := map[string]byte{
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"stdin": 0,
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"stdout": 1,
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"stderr": 2,
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}
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c.Assert(actual[0], checker.Equals, fdMap[stream])
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}
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c.Assert(actual[lenHeader:], checker.DeepEquals, expected, check.Commentf("Attach didn't return the expected data from %s", stream))
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}
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expectTimeout := func(conn net.Conn, br *bufio.Reader, stream string) {
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defer conn.Close()
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_, err := conn.Write([]byte{'t'})
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c.Assert(err, checker.IsNil)
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conn.SetReadDeadline(time.Now().Add(time.Second))
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actual := make([]byte, 1)
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_, err = io.ReadFull(br, actual)
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opErr, ok := err.(*net.OpError)
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c.Assert(ok, checker.Equals, true, check.Commentf("Error is expected to be *net.OpError, got %v", err))
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c.Assert(opErr.Timeout(), checker.Equals, true, check.Commentf("Read from %s is expected to timeout", stream))
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}
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// Create a container that only emits stdout.
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cid, _ := dockerCmd(c, "run", "-di", "busybox", "cat")
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cid = strings.TrimSpace(cid)
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// Attach to the container's stdout stream.
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conn, br, err := request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stdout=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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// Check if the data from stdout can be received.
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expectSuccess(conn, br, "stdout", false)
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// Attach to the container's stderr stream.
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conn, br, err = request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stderr=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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// Since the container only emits stdout, attaching to stderr should return nothing.
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expectTimeout(conn, br, "stdout")
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// Test the similar functions of the stderr stream.
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cid, _ = dockerCmd(c, "run", "-di", "busybox", "/bin/sh", "-c", "cat >&2")
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cid = strings.TrimSpace(cid)
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conn, br, err = request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stderr=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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expectSuccess(conn, br, "stderr", false)
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conn, br, err = request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stdout=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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expectTimeout(conn, br, "stderr")
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// Test with tty.
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cid, _ = dockerCmd(c, "run", "-dit", "busybox", "/bin/sh", "-c", "cat >&2")
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cid = strings.TrimSpace(cid)
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// Attach to stdout only.
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conn, br, err = request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stdout=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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expectSuccess(conn, br, "stdout", true)
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// Attach without stdout stream.
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conn, br, err = request.SockRequestHijack("POST", "/containers/"+cid+"/attach?stream=1&stdin=1&stderr=1", nil, "text/plain", daemonHost())
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c.Assert(err, checker.IsNil)
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// Nothing should be received because both the stdout and stderr of the container will be
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// sent to the client as stdout when tty is enabled.
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expectTimeout(conn, br, "stdout")
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// Test the client API
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// Make sure we don't see "hello" if Logs is false
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client, err := client.NewEnvClient()
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c.Assert(err, checker.IsNil)
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cid, _ = dockerCmd(c, "run", "-di", "busybox", "/bin/sh", "-c", "echo hello; cat")
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cid = strings.TrimSpace(cid)
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attachOpts := types.ContainerAttachOptions{
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Stream: true,
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Stdin: true,
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Stdout: true,
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}
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resp, err := client.ContainerAttach(context.Background(), cid, attachOpts)
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c.Assert(err, checker.IsNil)
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expectSuccess(resp.Conn, resp.Reader, "stdout", false)
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// Make sure we do see "hello" if Logs is true
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attachOpts.Logs = true
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resp, err = client.ContainerAttach(context.Background(), cid, attachOpts)
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c.Assert(err, checker.IsNil)
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defer resp.Conn.Close()
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resp.Conn.SetReadDeadline(time.Now().Add(time.Second))
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_, err = resp.Conn.Write([]byte("success"))
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c.Assert(err, checker.IsNil)
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actualStdout := new(bytes.Buffer)
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actualStderr := new(bytes.Buffer)
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stdcopy.StdCopy(actualStdout, actualStderr, resp.Reader)
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c.Assert(actualStdout.Bytes(), checker.DeepEquals, []byte("hello\nsuccess"), check.Commentf("Attach didn't return the expected data from stdout"))
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}
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