163 lines
3.7 KiB
Go
163 lines
3.7 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"io"
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"os/exec"
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"strings"
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"sync"
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"time"
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"github.com/docker/docker/pkg/integration/checker"
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"github.com/go-check/check"
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)
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const attachWait = 5 * time.Second
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func (s *DockerSuite) TestAttachMultipleAndRestart(c *check.C) {
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testRequires(c, DaemonIsLinux)
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endGroup := &sync.WaitGroup{}
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startGroup := &sync.WaitGroup{}
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endGroup.Add(3)
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startGroup.Add(3)
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err := waitForContainer("attacher", "-d", "busybox", "/bin/sh", "-c", "while true; do sleep 1; echo hello; done")
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c.Assert(err, check.IsNil)
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startDone := make(chan struct{})
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endDone := make(chan struct{})
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go func() {
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endGroup.Wait()
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close(endDone)
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}()
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go func() {
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startGroup.Wait()
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close(startDone)
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}()
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for i := 0; i < 3; i++ {
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go func() {
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cmd := exec.Command(dockerBinary, "attach", "attacher")
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defer func() {
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cmd.Wait()
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endGroup.Done()
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}()
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out, err := cmd.StdoutPipe()
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if err != nil {
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c.Fatal(err)
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}
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if err := cmd.Start(); err != nil {
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c.Fatal(err)
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}
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buf := make([]byte, 1024)
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if _, err := out.Read(buf); err != nil && err != io.EOF {
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c.Fatal(err)
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}
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startGroup.Done()
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if !strings.Contains(string(buf), "hello") {
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c.Fatalf("unexpected output %s expected hello\n", string(buf))
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}
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}()
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}
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select {
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case <-startDone:
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case <-time.After(attachWait):
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c.Fatalf("Attaches did not initialize properly")
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}
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dockerCmd(c, "kill", "attacher")
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select {
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case <-endDone:
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case <-time.After(attachWait):
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c.Fatalf("Attaches did not finish properly")
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}
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}
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func (s *DockerSuite) TestAttachTtyWithoutStdin(c *check.C) {
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testRequires(c, DaemonIsLinux)
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out, _ := dockerCmd(c, "run", "-d", "-ti", "busybox")
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id := strings.TrimSpace(out)
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c.Assert(waitRun(id), check.IsNil)
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done := make(chan error)
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go func() {
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defer close(done)
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cmd := exec.Command(dockerBinary, "attach", id)
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if _, err := cmd.StdinPipe(); err != nil {
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done <- err
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return
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}
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expected := "cannot enable tty mode"
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if out, _, err := runCommandWithOutput(cmd); err == nil {
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done <- fmt.Errorf("attach should have failed")
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return
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} else if !strings.Contains(out, expected) {
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done <- fmt.Errorf("attach failed with error %q: expected %q", out, expected)
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return
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}
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}()
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select {
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case err := <-done:
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c.Assert(err, check.IsNil)
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case <-time.After(attachWait):
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c.Fatal("attach is running but should have failed")
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}
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}
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func (s *DockerSuite) TestAttachDisconnect(c *check.C) {
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testRequires(c, DaemonIsLinux)
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out, _ := dockerCmd(c, "run", "-di", "busybox", "/bin/cat")
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id := strings.TrimSpace(out)
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cmd := exec.Command(dockerBinary, "attach", id)
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stdin, err := cmd.StdinPipe()
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if err != nil {
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c.Fatal(err)
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}
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defer stdin.Close()
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stdout, err := cmd.StdoutPipe()
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c.Assert(err, check.IsNil)
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defer stdout.Close()
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c.Assert(cmd.Start(), check.IsNil)
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defer cmd.Process.Kill()
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_, err = stdin.Write([]byte("hello\n"))
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c.Assert(err, check.IsNil)
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out, err = bufio.NewReader(stdout).ReadString('\n')
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c.Assert(err, check.IsNil)
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c.Assert(strings.TrimSpace(out), check.Equals, "hello")
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c.Assert(stdin.Close(), check.IsNil)
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// Expect container to still be running after stdin is closed
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running, err := inspectField(id, "State.Running")
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c.Assert(err, check.IsNil)
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c.Assert(running, check.Equals, "true")
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}
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func (s *DockerSuite) TestAttachPausedContainer(c *check.C) {
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testRequires(c, DaemonIsLinux) // Containers cannot be paused on Windows
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defer unpauseAllContainers()
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dockerCmd(c, "run", "-d", "--name=test", "busybox", "top")
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dockerCmd(c, "pause", "test")
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out, _, err := dockerCmdWithError("attach", "test")
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c.Assert(err, checker.NotNil, check.Commentf(out))
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c.Assert(out, checker.Contains, "You cannot attach to a paused container, unpause it first")
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}
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