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moby--moby/integration/commands_test.go
Antonio Murdaca b80fae7356 Refactor pkg/common, Fixes #11599
Signed-off-by: Antonio Murdaca <me@runcom.ninja>
2015-03-24 18:19:59 +01:00

436 lines
10 KiB
Go

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