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