// TestAttachDetachTruncatedID checks that attach in tty mode can be detached
func TestAttachDetachTruncatedID(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
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 := globalRuntime.List()[0]
stdin, stdinPipe = io.Pipe()
stdout, stdoutPipe = io.Pipe()
cli = docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
ch := make(chan struct{})
go func() {
defer close(ch)
if err := cli.CmdAttach(utils.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, stdinPipe, 15); err != nil {
if err != io.ErrClosedPipe {
t.Fatal(err)
}
}
})
setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
stdinPipe.Write([]byte{16, 17})
if err := stdinPipe.Close(); err != nil {
t.Fatal(err)
}
})
closeWrap(stdin, stdinPipe, stdout, stdoutPipe)
// wait for CmdRun to return
setTimeout(t, "Waiting for CmdAttach timed out", 15*time.Second, func() {
<-ch
})
time.Sleep(500 * time.Millisecond)
if !container.State.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 dies when the client disconnects
func TestRunDisconnectTty(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c1 := make(chan struct{})
go func() {
// We're simulating a disconnect so the return value doesn't matter. What matters is the
// fact that CmdRun returns.
if err := cli.CmdRun("-i", "-t", unitTestImageID, "/bin/cat"); err != nil {
utils.Debugf("Error CmdRun: %s", err)
}
close(c1)
}()
setTimeout(t, "Waiting for the container to be started timed out", 10*time.Second, func() {
for {
// Client disconnect after run -i should keep stdin out in TTY mode
l := globalRuntime.List()
if len(l) == 1 && l[0].State.IsRunning() {
break
}
time.Sleep(10 * time.Millisecond)
}
})
// Client disconnect after run -i should keep stdin out in TTY mode
container := globalRuntime.List()[0]
setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() {
if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 15); err != nil {
t.Fatal(err)
}
})
// Close pipes (simulate disconnect)
if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil {
t.Fatal(err)
}
// In tty mode, we expect the process to stay alive even after client's stdin closes.
// Do not wait for run to finish
// Give some time to monitor to do his thing
container.WaitTimeout(500 * time.Millisecond)
if !container.State.IsRunning() {
t.Fatalf("/bin/cat should still be running after closing stdin (tty mode)")
}
}
func TestRunExit(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c1 := make(chan struct{})
go func() {
cli.CmdRun("-i", unitTestImageID, "/bin/cat")
close(c1)
}()
setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() {
if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 150); err != nil {
t.Fatal(err)
}
})
container := globalRuntime.List()[0]
// Closing /bin/cat stdin, expect it to exit
if err := stdin.Close(); err != nil {
t.Fatal(err)
}
// as the process exited, CmdRun must finish and unblock. Wait for it
setTimeout(t, "Waiting for CmdRun timed out", 10*time.Second, func() {
<-c1
go func() {
cli.CmdWait(container.ID)
}()
if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil {
t.Fatal(err)
}
})
// Make sure that the client has been disconnected
setTimeout(t, "The client should have been disconnected once the remote process exited.", 2*time.Second, func() {
// Expecting pipe i/o error, just check that read does not block
stdin.Read([]byte{})
})
// Cleanup pipes
if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil {
t.Fatal(err)
}
}
func TestImagesTree(t *testing.T) {
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
image := buildTestImages(t, globalEngine)
c := make(chan struct{})
go func() {
defer close(c)
if err := cli.CmdImages("-tree"); err != nil {
t.Fatal(err)
}
stdoutPipe.Close()
}()
setTimeout(t, "Reading command output time out", 2*time.Second, func() {
cmdOutputBytes, err := ioutil.ReadAll(bufio.NewReader(stdout))
if err != nil {
t.Fatal(err)
}
cmdOutput := string(cmdOutputBytes)
regexpStrings := []string{
fmt.Sprintf("└─%s Size: (\\d+.\\d+ MB) \\(virtual \\d+.\\d+ MB\\) Tags: %s:latest", unitTestImageIDShort, unitTestImageName),
"(?m)^ └─[0-9a-f]+",
"(?m)^ └─[0-9a-f]+",
"(?m)^ └─[0-9a-f]+",
fmt.Sprintf(" └─%s Size: \\d+ B \\(virtual \\d+.\\d+ MB\\) Tags: test:latest", utils.TruncateID(image.ID)),
}
compiledRegexps := []*regexp.Regexp{}
for _, regexpString := range regexpStrings {
regexp, err := regexp.Compile(regexpString)
if err != nil {
fmt.Println("Error in regex string: ", err)
return
}
compiledRegexps = append(compiledRegexps, regexp)
}
for _, regexp := range compiledRegexps {
if !regexp.MatchString(cmdOutput) {
t.Fatalf("images -tree content '%s' did not match regexp '%s'", cmdOutput, regexp)
}
}
})
}
func TestImagesViz(t *testing.T) {
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
image := buildTestImages(t, globalEngine)
c := make(chan struct{})
go func() {
defer close(c)
if err := cli.CmdImages("-viz"); err != nil {
t.Fatal(err)
}
stdoutPipe.Close()
}()
setTimeout(t, "Reading command output time out", 2*time.Second, func() {
cmdOutputBytes, err := ioutil.ReadAll(bufio.NewReader(stdout))
if err != nil {
t.Fatal(err)
}
cmdOutput := string(cmdOutputBytes)
regexpStrings := []string{
"digraph docker {",
fmt.Sprintf("base -> \"%s\" \\[style=invis]", unitTestImageIDShort),
fmt.Sprintf("label=\"%s\\\\n%s:latest\"", unitTestImageIDShort, unitTestImageName),
fmt.Sprintf("label=\"%s\\\\n%s:%s\"", utils.TruncateID(image.ID), "test", "latest"),
"base \\[style=invisible]",
}
compiledRegexps := []*regexp.Regexp{}
for _, regexpString := range regexpStrings {
regexp, err := regexp.Compile(regexpString)
if err != nil {
fmt.Println("Error in regex string: ", err)
return
}
compiledRegexps = append(compiledRegexps, regexp)
}
for _, regexp := range compiledRegexps {
if !regexp.MatchString(cmdOutput) {
t.Fatalf("images -viz content '%s' did not match regexp '%s'", cmdOutput, regexp)
}
}
})
}
func TestCmdLogs(t *testing.T) {
cli := docker.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
if err := cli.CmdRun(unitTestImageID, "sh", "-c", "ls -l"); err != nil {
t.Fatal(err)
}
if err := cli.CmdRun("-t", unitTestImageID, "sh", "-c", "ls -l"); err != nil {
t.Fatal(err)
}
if err := cli.CmdLogs(globalRuntime.List()[0].ID); err != nil {
t.Fatal(err)
}
}
// #2098 - Docker cidFiles only contain short version of the containerId
//sudo docker run -cidfile /tmp/docker_test.cid ubuntu echo "test"
// TestRunCidFile tests that run -cidfile returns the longid
func TestRunCidFile(t *testing.T) {
stdout, stdoutPipe := io.Pipe()
tmpDir, err := ioutil.TempDir("", "TestRunCidFile")
if err != nil {
t.Fatal(err)
}
tmpCidFile := path.Join(tmpDir, "cid")
cli := docker.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c := make(chan struct{})
go func() {
defer close(c)
if err := cli.CmdRun("-cidfile", tmpCidFile, unitTestImageID, "ls"); err != nil {
t.Fatal(err)
}
}()
defer os.RemoveAll(tmpDir)
setTimeout(t, "Reading command output time out", 2*time.Second, func() {
cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
if err != nil {
t.Fatal(err)
}
if len(cmdOutput) < 1 {
t.Fatalf("'ls' should return something , not '%s'", cmdOutput)
}
//read the tmpCidFile
buffer, err := ioutil.ReadFile(tmpCidFile)
if err != nil {
t.Fatal(err)
}
id := string(buffer)
if len(id) != len("2bf44ea18873287bd9ace8a4cb536a7cbe134bed67e805fdf2f58a57f69b320c") {
t.Fatalf("-cidfile should be a long id, not '%s'", id)
}
//test that its a valid cid? (though the container is gone..)
//remove the file and dir.
})
setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
<-c
})
}
// TestRunDetach checks attaching and detaching with the escape sequence.
func TestRunDetach(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
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, stdinPipe, 150); err != nil {
t.Fatal(err)
}
})
setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
stdinPipe.Write([]byte{16})
time.Sleep(100 * time.Millisecond)
stdinPipe.Write([]byte{17})
})
// wait for CmdRun to return
setTimeout(t, "Waiting for CmdRun timed out", 15*time.Second, func() {
<-ch
})
closeWrap(stdin, stdinPipe, stdout, stdoutPipe)
time.Sleep(500 * time.Millisecond)
if !container.State.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()
})
}
// Expected behaviour: error out when attempting to bind mount non-existing source paths
func TestRunErrorBindNonExistingSource(t *testing.T) {
cli := docker.NewDockerCli(nil, nil, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c := make(chan struct{})
go func() {
defer close(c)
if err := cli.CmdRun("-v", "/i/dont/exist:/tmp", unitTestImageID, "echo 'should fail'"); err == nil {
t.Fatal("should have failed to run when using /i/dont/exist as a source for the bind mount")
}
}()
setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
<-c
})
}
// Expected behaviour: the process dies when the client disconnects
func TestRunDisconnect(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c1 := make(chan struct{})
go func() {
// We're simulating a disconnect so the return value doesn't matter. What matters is the
// fact that CmdRun returns.
cli.CmdRun("-i", unitTestImageID, "/bin/cat")
close(c1)
}()
setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() {
if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 150); err != nil {
t.Fatal(err)
}
})
// Close pipes (simulate disconnect)
if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil {
t.Fatal(err)
}
// as the pipes are close, we expect the process to die,
// therefore CmdRun to unblock. Wait for CmdRun
setTimeout(t, "Waiting for CmdRun timed out", 2*time.Second, func() {
<-c1
})
// Client disconnect after run -i should cause stdin to be closed, which should
// cause /bin/cat to exit.
setTimeout(t, "Waiting for /bin/cat to exit timed out", 2*time.Second, func() {
container := globalRuntime.List()[0]
container.Wait()
if container.State.IsRunning() {
t.Fatalf("/bin/cat is still running after closing stdin")
}
})
}
// TestRunWorkdirExists checks that 'docker run -w' correctly sets a custom working directory, even if it exists
func TestRunWorkdirExists(t *testing.T) {
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
c := make(chan struct{})
go func() {
defer close(c)
if err := cli.CmdRun("-w", "/proc", unitTestImageID, "pwd"); err != nil {
t.Fatal(err)
}
}()
setTimeout(t, "Reading command output time out", 2*time.Second, func() {
cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
if err != nil {
t.Fatal(err)
}
if cmdOutput != "/proc\n" {
t.Fatalf("'pwd' should display '%s', not '%s'", "/proc\n", cmdOutput)
}
})
container := globalRuntime.List()[0]
setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
<-c
go func() {
cli.CmdWait(container.ID)
}()
if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil {
t.Fatal(err)
}
})
// Cleanup pipes
if err := closeWrap(stdout, stdoutPipe); err != nil {
t.Fatal(err)
}
}
// 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 := docker.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
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(globalRuntime.List()) > 0 {
t.Fatalf("failed to remove container automatically: container %s still exists", temporaryContainerID)
}
}
// Expected behaviour, the process stays alive when the client disconnects
func TestAttachDisconnect(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
go func() {
// Start a process in daemon mode
if err := cli.CmdRun("-d", "-i", unitTestImageID, "/bin/cat"); err != nil {
utils.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 := globalRuntime.List()
if len(l) == 1 && l[0].State.IsRunning() {
break
}
time.Sleep(10 * time.Millisecond)
}
})
container := globalRuntime.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, stdinPipe, 150); err != nil {
t.Fatal(err)
}
})
// Close pipes (client disconnects)
if err := closeWrap(stdin, stdinPipe, 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.WaitTimeout(500 * time.Millisecond)
if err == nil || !container.State.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.Wait()
}
// TestAttachDetach checks that attach in tty mode can be detached using the long container ID
func TestAttachDetach(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
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)
stdin, stdinPipe = io.Pipe()
stdout, stdoutPipe = io.Pipe()
cli = docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
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, stdinPipe, 150); err != nil {
if err != io.ErrClosedPipe {
t.Fatal(err)
}
}
})
setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
stdinPipe.Write([]byte{16})
time.Sleep(100 * time.Millisecond)
stdinPipe.Write([]byte{17})
})
// wait for CmdRun to return
setTimeout(t, "Waiting for CmdAttach timed out", 15*time.Second, func() {
<-ch
})
closeWrap(stdin, stdinPipe, stdout, stdoutPipe)
time.Sleep(500 * time.Millisecond)
if !container.State.IsRunning() {
t.Fatal("The detached container should be still running")
}
setTimeout(t, "Waiting for container to die timedout", 5*time.Second, func() {
container.Kill()
})
}
// TestAttachStdin checks attaching to stdin without stdout and stderr.
// 'docker run -i -a stdin' should sends the client's stdin to the command,
// then detach from it and print the container id.
func TestRunAttachStdin(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
ch := make(chan struct{})
go func() {
defer close(ch)
cli.CmdRun("-i", "-a", "stdin", unitTestImageID, "sh", "-c", "echo hello && cat && sleep 5")
}()
// Send input to the command, close stdin
setTimeout(t, "Write timed out", 10*time.Second, func() {
if _, err := stdinPipe.Write([]byte("hi there\n")); err != nil {
t.Fatal(err)
}
if err := stdinPipe.Close(); err != nil {
t.Fatal(err)
}
})
container := globalRuntime.List()[0]
// Check output
setTimeout(t, "Reading command output time out", 10*time.Second, func() {
cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
if err != nil {
t.Fatal(err)
}
if cmdOutput != container.ID+"\n" {
t.Fatalf("Wrong output: should be '%s', not '%s'\n", container.ID+"\n", cmdOutput)
}
})
// wait for CmdRun to return
setTimeout(t, "Waiting for CmdRun timed out", 5*time.Second, func() {
<-ch
})
setTimeout(t, "Waiting for command to exit timed out", 10*time.Second, func() {
container.Wait()
})
// Check logs
if cmdLogs, err := container.ReadLog("json"); err != nil {
t.Fatal(err)
} else {
if output, err := ioutil.ReadAll(cmdLogs); err != nil {
t.Fatal(err)
} else {
expectedLogs := []string{"{\"log\":\"hello\\n\",\"stream\":\"stdout\"", "{\"log\":\"hi there\\n\",\"stream\":\"stdout\""}
for _, expectedLog := range expectedLogs {
if !strings.Contains(string(output), expectedLog) {
t.Fatalf("Unexpected logs: should contains '%s', it is not '%s'\n", expectedLog, output)
}
}
}
}
}
func main() {
// Parse command line for custom options
kind := flag.String("t", "upstart", "Type of manager requested")
author := flag.String("a", "<none>", "Author of the image")
description := flag.String("d", "<none>", "Description of the image")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "\nUsage: manager <container id>\n\n")
flag.PrintDefaults()
}
flag.Parse()
// We require at least the container ID
if flag.NArg() != 1 {
println(flag.NArg())
flag.Usage()
return
}
// Check that the requested process manager is supported
if _, exists := templates[*kind]; !exists {
panic("Unknown script template")
}
// Load the requested template
tpl, err := template.New("processManager").Parse(templates[*kind])
if err != nil {
panic(err)
}
// Create stdout/stderr buffers
bufOut := bytes.NewBuffer(nil)
bufErr := bytes.NewBuffer(nil)
// Instanciate the Docker CLI
cli := docker.NewDockerCli(nil, bufOut, bufErr, "unix", "/var/run/docker.sock", false, nil)
// Retrieve the container info
if err := cli.CmdInspect(flag.Arg(0)); err != nil {
// As of docker v0.6.3, CmdInspect always returns nil
panic(err)
}
// If there is nothing in the error buffer, then the Docker daemon is there and the container has been found
if bufErr.Len() == 0 {
// Unmarshall the resulting container data
c := []*docker.Container{{}}
if err := json.Unmarshal(bufOut.Bytes(), &c); err != nil {
panic(err)
}
// Reset the buffers
bufOut.Reset()
bufErr.Reset()
// Retrieve the info of the linked image
if err := cli.CmdInspect(c[0].Image); err != nil {
panic(err)
}
// If there is nothing in the error buffer, then the image has been found.
if bufErr.Len() == 0 {
// Unmarshall the resulting image data
img := []*docker.Image{{}}
if err := json.Unmarshal(bufOut.Bytes(), &img); err != nil {
panic(err)
}
// If no author has been set, use the one from the image
if *author == "<none>" && img[0].Author != "" {
*author = strings.Replace(img[0].Author, "\"", "", -1)
}
// If no description has been set, use the comment from the image
if *description == "<none>" && img[0].Comment != "" {
*description = strings.Replace(img[0].Comment, "\"", "", -1)
}
}
}
/// Old version: Wrtie the resulting script to file
// f, err := os.OpenFile(kind, os.O_CREATE|os.O_WRONLY, 0755)
// if err != nil {
// panic(err)
// }
// defer f.Close()
// Create a map with needed data
data := map[string]string{
"author": *author,
"description": *description,
"container_id": flag.Arg(0),
}
// Process the template and output it on Stdout
if err := tpl.Execute(os.Stdout, data); err != nil {
panic(err)
}
}
func TestContainerOrphaning(t *testing.T) {
// setup a temporary directory
tmpDir, err := ioutil.TempDir("", "project")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpDir)
// setup a CLI and server
cli := docker.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
srv := mkServerFromEngine(globalEngine, t)
// closure to build something
buildSomething := func(template string, image string) string {
dockerfile := path.Join(tmpDir, "Dockerfile")
replacer := strings.NewReplacer("{IMAGE}", unitTestImageID)
contents := replacer.Replace(template)
ioutil.WriteFile(dockerfile, []byte(contents), 0x777)
if err := cli.CmdBuild("-t", image, tmpDir); err != nil {
t.Fatal(err)
}
img, err := srv.ImageInspect(image)
if err != nil {
t.Fatal(err)
}
return img.ID
}
// build an image
imageName := "orphan-test"
template1 := `
from {IMAGE}
cmd ["/bin/echo", "holla"]
`
img1 := buildSomething(template1, imageName)
// create a container using the fist image
if err := cli.CmdRun(imageName); err != nil {
t.Fatal(err)
}
// build a new image that splits lineage
template2 := `
from {IMAGE}
cmd ["/bin/echo", "holla"]
expose 22
`
buildSomething(template2, imageName)
// remove the second image by name
resp, err := srv.ImageDelete(imageName, true)
// see if we deleted the first image (and orphaned the container)
for _, i := range resp {
if img1 == i.Deleted {
t.Fatal("Orphaned image with container")
}
}
}
func TestCmdKill(t *testing.T) {
stdin, stdinPipe := io.Pipe()
stdout, stdoutPipe := io.Pipe()
cli := docker.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr)
cli2 := docker.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto, testDaemonAddr)
defer cleanup(globalEngine, t)
ch := make(chan struct{})
go func() {
defer close(ch)
cli.CmdRun("-i", "-t", unitTestImageID, "sh", "-c", "trap 'echo SIGUSR1' USR1; trap 'echo SIGUSR2' USR2; echo Ready; while true; do read; done")
}()
container := waitContainerStart(t, 10*time.Second)
setTimeout(t, "Read Ready timed out", 3*time.Second, func() {
if err := expectPipe("Ready", stdout); err != nil {
t.Fatal(err)
}
})
setTimeout(t, "SIGUSR1 timed out", 2*time.Second, func() {
for i := 0; i < 10; i++ {
if err := cli2.CmdKill("-s", strconv.Itoa(int(syscall.SIGUSR1)), container.ID); err != nil {
t.Fatal(err)
}
if err := expectPipe("SIGUSR1", stdout); err != nil {
t.Fatal(err)
}
}
})
setTimeout(t, "SIGUSR2 timed out", 2*time.Second, func() {
for i := 0; i < 10; i++ {
if err := cli2.CmdKill("--signal=USR2", container.ID); err != nil {
t.Fatal(err)
}
if err := expectPipe("SIGUSR2", stdout); err != nil {
t.Fatal(err)
}
}
})
time.Sleep(500 * time.Millisecond)
if !container.State.IsRunning() {
t.Fatal("The container should be still running")
}
setTimeout(t, "Waiting for container timedout", 5*time.Second, func() {
if err := cli2.CmdKill(container.ID); err != nil {
t.Fatal(err)
}
<-ch
if err := cli2.CmdWait(container.ID); err != nil {
t.Fatal(err)
}
})
closeWrap(stdin, stdinPipe, stdout, stdoutPipe)
}