mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
460 lines
11 KiB
Go
460 lines
11 KiB
Go
package docker
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import (
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"bufio"
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"fmt"
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"io"
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"io/ioutil"
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"strings"
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"testing"
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"time"
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log "github.com/Sirupsen/logrus"
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/daemon"
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"github.com/docker/docker/pkg/term"
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"github.com/docker/docker/utils"
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"github.com/docker/libtrust"
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"github.com/kr/pty"
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)
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func closeWrap(args ...io.Closer) error {
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e := false
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ret := fmt.Errorf("Error closing elements")
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for _, c := range args {
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if err := c.Close(); err != nil {
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e = true
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ret = fmt.Errorf("%s\n%s", ret, err)
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}
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}
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if e {
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return ret
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}
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return nil
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}
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func setRaw(t *testing.T, c *daemon.Container) *term.State {
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pty, err := c.GetPtyMaster()
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if err != nil {
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t.Fatal(err)
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}
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state, err := term.MakeRaw(pty.Fd())
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if err != nil {
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t.Fatal(err)
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}
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return state
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}
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func unsetRaw(t *testing.T, c *daemon.Container, state *term.State) {
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pty, err := c.GetPtyMaster()
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if err != nil {
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t.Fatal(err)
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}
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term.RestoreTerminal(pty.Fd(), state)
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}
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func waitContainerStart(t *testing.T, timeout time.Duration) *daemon.Container {
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var container *daemon.Container
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setTimeout(t, "Waiting for the container to be started timed out", timeout, func() {
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for {
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l := globalDaemon.List()
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if len(l) == 1 && l[0].IsRunning() {
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container = l[0]
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break
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}
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time.Sleep(10 * time.Millisecond)
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}
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})
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if container == nil {
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t.Fatal("An error occured while waiting for the container to start")
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}
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return container
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}
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func setTimeout(t *testing.T, msg string, d time.Duration, f func()) {
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c := make(chan bool)
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// Make sure we are not too long
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go func() {
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time.Sleep(d)
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c <- true
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}()
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go func() {
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f()
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c <- false
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}()
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if <-c && msg != "" {
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t.Fatal(msg)
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}
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}
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func expectPipe(expected string, r io.Reader) error {
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o, err := bufio.NewReader(r).ReadString('\n')
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if err != nil {
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return err
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}
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if strings.Trim(o, " \r\n") != expected {
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return fmt.Errorf("Unexpected output. Expected [%s], received [%s]", expected, o)
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}
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return nil
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}
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func assertPipe(input, output string, r io.Reader, w io.Writer, count int) error {
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for i := 0; i < count; i++ {
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if _, err := w.Write([]byte(input)); err != nil {
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return err
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}
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if err := expectPipe(output, r); err != nil {
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return err
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}
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}
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return nil
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}
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// TestRunDetach checks attaching and detaching with the escape sequence.
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func TestRunDetach(t *testing.T) {
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stdout, stdoutPipe := io.Pipe()
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cpty, tty, err := pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatal(err)
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}
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cli := client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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defer cleanup(globalEngine, t)
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ch := make(chan struct{})
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go func() {
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defer close(ch)
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cli.CmdRun("-i", "-t", unitTestImageID, "cat")
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}()
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container := waitContainerStart(t, 10*time.Second)
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state := setRaw(t, container)
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defer unsetRaw(t, container, state)
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setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() {
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if err := assertPipe("hello\n", "hello", stdout, cpty, 150); err != nil {
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t.Fatal(err)
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}
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})
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setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
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cpty.Write([]byte{16})
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time.Sleep(100 * time.Millisecond)
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cpty.Write([]byte{17})
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})
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// wait for CmdRun to return
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setTimeout(t, "Waiting for CmdRun timed out", 15*time.Second, func() {
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<-ch
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})
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closeWrap(cpty, stdout, stdoutPipe)
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time.Sleep(500 * time.Millisecond)
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if !container.IsRunning() {
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t.Fatal("The detached container should be still running")
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}
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setTimeout(t, "Waiting for container to die timed out", 20*time.Second, func() {
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container.Kill()
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})
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}
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// TestAttachDetach checks that attach in tty mode can be detached using the long container ID
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func TestAttachDetach(t *testing.T) {
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stdout, stdoutPipe := io.Pipe()
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cpty, tty, err := pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatal(err)
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}
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cli := client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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defer cleanup(globalEngine, t)
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ch := make(chan struct{})
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go func() {
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defer close(ch)
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if err := cli.CmdRun("-i", "-t", "-d", unitTestImageID, "cat"); err != nil {
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t.Fatal(err)
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}
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}()
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container := waitContainerStart(t, 10*time.Second)
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setTimeout(t, "Reading container's id timed out", 10*time.Second, func() {
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buf := make([]byte, 1024)
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n, err := stdout.Read(buf)
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if err != nil {
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t.Fatal(err)
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}
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if strings.Trim(string(buf[:n]), " \r\n") != container.ID {
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t.Fatalf("Wrong ID received. Expect %s, received %s", container.ID, buf[:n])
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}
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})
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setTimeout(t, "Starting container timed out", 10*time.Second, func() {
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<-ch
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})
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state := setRaw(t, container)
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defer unsetRaw(t, container, state)
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stdout, stdoutPipe = io.Pipe()
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cpty, tty, err = pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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cli = client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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ch = make(chan struct{})
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go func() {
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defer close(ch)
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if err := cli.CmdAttach(container.ID); err != nil {
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if err != io.ErrClosedPipe {
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t.Fatal(err)
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}
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}
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}()
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setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() {
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if err := assertPipe("hello\n", "hello", stdout, cpty, 150); err != nil {
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if err != io.ErrClosedPipe {
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t.Fatal(err)
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}
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}
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})
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setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
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cpty.Write([]byte{16})
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time.Sleep(100 * time.Millisecond)
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cpty.Write([]byte{17})
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})
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// wait for CmdRun to return
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setTimeout(t, "Waiting for CmdAttach timed out", 15*time.Second, func() {
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<-ch
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})
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closeWrap(cpty, stdout, stdoutPipe)
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time.Sleep(500 * time.Millisecond)
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if !container.IsRunning() {
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t.Fatal("The detached container should be still running")
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}
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setTimeout(t, "Waiting for container to die timedout", 5*time.Second, func() {
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container.Kill()
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})
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}
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// TestAttachDetachTruncatedID checks that attach in tty mode can be detached
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func TestAttachDetachTruncatedID(t *testing.T) {
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stdout, stdoutPipe := io.Pipe()
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cpty, tty, err := pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatal(err)
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}
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cli := client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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defer cleanup(globalEngine, t)
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// Discard the CmdRun output
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go stdout.Read(make([]byte, 1024))
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setTimeout(t, "Starting container timed out", 2*time.Second, func() {
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if err := cli.CmdRun("-i", "-t", "-d", unitTestImageID, "cat"); err != nil {
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t.Fatal(err)
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}
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})
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container := waitContainerStart(t, 10*time.Second)
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state := setRaw(t, container)
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defer unsetRaw(t, container, state)
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stdout, stdoutPipe = io.Pipe()
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cpty, tty, err = pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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cli = client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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ch := make(chan struct{})
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go func() {
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defer close(ch)
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if err := cli.CmdAttach(utils.TruncateID(container.ID)); err != nil {
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if err != io.ErrClosedPipe {
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t.Fatal(err)
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}
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}
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}()
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setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() {
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if err := assertPipe("hello\n", "hello", stdout, cpty, 150); err != nil {
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if err != io.ErrClosedPipe {
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t.Fatal(err)
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}
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}
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})
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setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
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cpty.Write([]byte{16})
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time.Sleep(100 * time.Millisecond)
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cpty.Write([]byte{17})
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})
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// wait for CmdRun to return
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setTimeout(t, "Waiting for CmdAttach timed out", 15*time.Second, func() {
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<-ch
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})
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closeWrap(cpty, stdout, stdoutPipe)
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time.Sleep(500 * time.Millisecond)
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if !container.IsRunning() {
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t.Fatal("The detached container should be still running")
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}
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setTimeout(t, "Waiting for container to die timedout", 5*time.Second, func() {
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container.Kill()
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})
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}
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// Expected behaviour, the process stays alive when the client disconnects
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func TestAttachDisconnect(t *testing.T) {
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stdout, stdoutPipe := io.Pipe()
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cpty, tty, err := pty.Open()
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if err != nil {
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t.Fatal(err)
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}
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatal(err)
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}
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cli := client.NewDockerCli(tty, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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defer cleanup(globalEngine, t)
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go func() {
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// Start a process in daemon mode
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if err := cli.CmdRun("-d", "-i", unitTestImageID, "/bin/cat"); err != nil {
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log.Debugf("Error CmdRun: %s", err)
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}
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}()
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setTimeout(t, "Waiting for CmdRun timed out", 10*time.Second, func() {
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if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil {
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t.Fatal(err)
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}
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})
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setTimeout(t, "Waiting for the container to be started timed out", 10*time.Second, func() {
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for {
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l := globalDaemon.List()
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if len(l) == 1 && l[0].IsRunning() {
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break
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}
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time.Sleep(10 * time.Millisecond)
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}
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})
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container := globalDaemon.List()[0]
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// Attach to it
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c1 := make(chan struct{})
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go func() {
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// We're simulating a disconnect so the return value doesn't matter. What matters is the
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// fact that CmdAttach returns.
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cli.CmdAttach(container.ID)
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close(c1)
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}()
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setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() {
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if err := assertPipe("hello\n", "hello", stdout, cpty, 150); err != nil {
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t.Fatal(err)
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}
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})
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// Close pipes (client disconnects)
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if err := closeWrap(cpty, stdout, stdoutPipe); err != nil {
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t.Fatal(err)
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}
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// Wait for attach to finish, the client disconnected, therefore, Attach finished his job
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setTimeout(t, "Waiting for CmdAttach timed out", 2*time.Second, func() {
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<-c1
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})
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// We closed stdin, expect /bin/cat to still be running
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// Wait a little bit to make sure container.monitor() did his thing
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_, err = container.WaitStop(500 * time.Millisecond)
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if err == nil || !container.IsRunning() {
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t.Fatalf("/bin/cat is not running after closing stdin")
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}
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// Try to avoid the timeout in destroy. Best effort, don't check error
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cStdin, _ := container.StdinPipe()
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cStdin.Close()
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container.WaitStop(-1 * time.Second)
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}
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// Expected behaviour: container gets deleted automatically after exit
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func TestRunAutoRemove(t *testing.T) {
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t.Skip("Fixme. Skipping test for now, race condition")
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stdout, stdoutPipe := io.Pipe()
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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t.Fatal(err)
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}
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cli := client.NewDockerCli(nil, stdoutPipe, ioutil.Discard, key, testDaemonProto, testDaemonAddr, nil)
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defer cleanup(globalEngine, t)
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c := make(chan struct{})
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go func() {
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defer close(c)
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if err := cli.CmdRun("--rm", unitTestImageID, "hostname"); err != nil {
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t.Fatal(err)
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}
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}()
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var temporaryContainerID string
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setTimeout(t, "Reading command output time out", 2*time.Second, func() {
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cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
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if err != nil {
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t.Fatal(err)
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}
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temporaryContainerID = cmdOutput
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if err := closeWrap(stdout, stdoutPipe); err != nil {
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t.Fatal(err)
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}
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})
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setTimeout(t, "CmdRun timed out", 10*time.Second, func() {
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<-c
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})
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time.Sleep(500 * time.Millisecond)
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if len(globalDaemon.List()) > 0 {
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t.Fatalf("failed to remove container automatically: container %s still exists", temporaryContainerID)
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}
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}
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