Golang daemon.Get函數代碼示例

func TestRandomContainerName(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	config, _, _, err := parseRun([]string{GetTestImage(daemon).ID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	container, err := daemon.Get(createTestContainer(eng, config, t))
	if err != nil {
		t.Fatal(err)
	}
	containerID := container.ID

	if container.Name == "" {
		t.Fatalf("Expected not empty container name")
	}

	if c, err := daemon.Get(container.Name); err != nil {
		logrus.Fatalf("Could not lookup container %s by its name", container.Name)
	} else if c.ID != containerID {
		logrus.Fatalf("Looking up container name %s returned id %s instead of %s", container.Name, c.ID, containerID)
	}
}

func TestDefaultContainerName(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	config, _, _, err := parseRun([]string{unitTestImageID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	container, err := daemon.Get(createNamedTestContainer(eng, config, t, "some_name"))
	if err != nil {
		t.Fatal(err)
	}
	containerID := container.ID

	if container.Name != "/some_name" {
		t.Fatalf("Expect /some_name got %s", container.Name)
	}

	c, err := daemon.Get("/some_name")
	if err != nil {
		t.Fatalf("Couldn't retrieve test container as /some_name")
	}
	if c.ID != containerID {
		t.Fatalf("Container /some_name has ID %s instead of %s", c.ID, containerID)
	}
}

func TestGet(t *testing.T) {
	daemon := mkDaemon(t)
	defer nuke(daemon)

	container1, _, _ := mkContainer(daemon, []string{"_", "ls", "-al"}, t)
	defer daemon.Rm(container1)

	container2, _, _ := mkContainer(daemon, []string{"_", "ls", "-al"}, t)
	defer daemon.Rm(container2)

	container3, _, _ := mkContainer(daemon, []string{"_", "ls", "-al"}, t)
	defer daemon.Rm(container3)

	if c, _ := daemon.Get(container1.ID); c != container1 {
		t.Errorf("Get(test1) returned %v while expecting %v", c, container1)
	}

	if c, _ := daemon.Get(container2.ID); c != container2 {
		t.Errorf("Get(test2) returned %v while expecting %v", c, container2)
	}

	if c, _ := daemon.Get(container3.ID); c != container3 {
		t.Errorf("Get(test3) returned %v while expecting %v", c, container3)
	}

}

func TestGetAllChildren(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	config, _, _, err := parseRun([]string{unitTestImageID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	container, err := daemon.Get(createNamedTestContainer(eng, config, t, "/webapp"))
	if err != nil {
		t.Fatal(err)
	}

	webapp, err := daemon.GetByName("/webapp")
	if err != nil {
		t.Fatal(err)
	}

	if webapp.ID != container.ID {
		t.Fatalf("Expect webapp id to match container id: %s != %s", webapp.ID, container.ID)
	}

	config, _, _, err = parseRun([]string{unitTestImageID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	childContainer, err := daemon.Get(createTestContainer(eng, config, t))
	if err != nil {
		t.Fatal(err)
	}

	if err := daemon.RegisterLink(webapp, childContainer, "db"); err != nil {
		t.Fatal(err)
	}

	children, err := daemon.Children("/webapp")
	if err != nil {
		t.Fatal(err)
	}

	if children == nil {
		t.Fatal("Children should not be nil")
	}
	if len(children) == 0 {
		t.Fatal("Children should not be empty")
	}

	for key, value := range children {
		if key != "/webapp/db" {
			t.Fatalf("Expected /webapp/db got %s", key)
		}
		if value.ID != childContainer.ID {
			t.Fatalf("Expected id %s got %s", childContainer.ID, value.ID)
		}
	}
}

func TestContainerNameValidation(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	for _, test := range []struct {
		Name  string
		Valid bool
	}{
		{"abc-123_AAA.1", true},
		{"\000asdf", false},
	} {
		config, _, _, err := parseRun([]string{unitTestImageID, "echo test"})
		if err != nil {
			if !test.Valid {
				continue
			}
			t.Fatal(err)
		}

		var outputBuffer = bytes.NewBuffer(nil)
		job := eng.Job("create", test.Name)
		if err := job.ImportEnv(config); err != nil {
			t.Fatal(err)
		}
		job.Stdout.Add(outputBuffer)
		if err := job.Run(); err != nil {
			if !test.Valid {
				continue
			}
			t.Fatal(err)
		}

		container, err := daemon.Get(engine.Tail(outputBuffer, 1))
		if err != nil {
			t.Fatal(err)
		}

		if container.Name != "/"+test.Name {
			t.Fatalf("Expect /%s got %s", test.Name, container.Name)
		}

		if c, err := daemon.Get("/" + test.Name); err != nil {
			t.Fatalf("Couldn't retrieve test container as /%s", test.Name)
		} else if c.ID != container.ID {
			t.Fatalf("Container /%s has ID %s instead of %s", test.Name, c.ID, container.ID)
		}
	}

}

func (srv *Server) ContainerStart(job *engine.Job) engine.Status {
	if len(job.Args) < 1 {
		return job.Errorf("Usage: %s container_id", job.Name)
	}
	var (
		name      = job.Args[0]
		daemon    = srv.daemon
		container = daemon.Get(name)
	)

	if container == nil {
		return job.Errorf("No such container: %s", name)
	}

	if container.State.IsRunning() {
		return job.Errorf("Container already started")
	}

	// If no environment was set, then no hostconfig was passed.
	if len(job.Environ()) > 0 {
		hostConfig := runconfig.ContainerHostConfigFromJob(job)
		if err := srv.setHostConfig(container, hostConfig); err != nil {
			return job.Error(err)
		}
	}
	if err := container.Start(); err != nil {
		return job.Errorf("Cannot start container %s: %s", name, err)
	}
	srv.LogEvent("start", container.ID, daemon.Repositories().ImageName(container.Image))

	return engine.StatusOK
}

func TestLinkChildContainer(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	config, _, _, err := parseRun([]string{unitTestImageID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	container, err := daemon.Get(createNamedTestContainer(eng, config, t, "/webapp"))
	if err != nil {
		t.Fatal(err)
	}

	webapp, err := daemon.GetByName("/webapp")
	if err != nil {
		t.Fatal(err)
	}

	if webapp.ID != container.ID {
		t.Fatalf("Expect webapp id to match container id: %s != %s", webapp.ID, container.ID)
	}

	config, _, _, err = parseRun([]string{GetTestImage(daemon).ID, "echo test"})
	if err != nil {
		t.Fatal(err)
	}

	childContainer, err := daemon.Get(createTestContainer(eng, config, t))
	if err != nil {
		t.Fatal(err)
	}

	if err := daemon.RegisterLink(webapp, childContainer, "db"); err != nil {
		t.Fatal(err)
	}

	// Get the child by it's new name
	db, err := daemon.GetByName("/webapp/db")
	if err != nil {
		t.Fatal(err)
	}
	if db.ID != childContainer.ID {
		t.Fatalf("Expect db id to match container id: %s != %s", db.ID, childContainer.ID)
	}
}

func getContainer(eng *engine.Engine, id string, t log.Fataler) *daemon.Container {
	daemon := mkDaemonFromEngine(eng, t)
	c := daemon.Get(id)
	if c == nil {
		t.Fatal(fmt.Errorf("No such container: %s", id))
	}
	return c
}

func getContainer(eng *engine.Engine, id string, t Fataler) *daemon.Container {
	daemon := mkDaemonFromEngine(eng, t)
	c, err := daemon.Get(id)
	if err != nil {
		t.Fatal(err)
	}
	return c
}

func TestContainerNameValidation(t *testing.T) {
	eng := NewTestEngine(t)
	daemon := mkDaemonFromEngine(eng, t)
	defer nuke(daemon)

	for _, test := range []struct {
		Name  string
		Valid bool
	}{
		{"abc-123_AAA.1", true},
		{"\000asdf", false},
	} {
		config, _, _, err := parseRun([]string{unitTestImageID, "echo test"})
		if err != nil {
			if !test.Valid {
				continue
			}
			t.Fatal(err)
		}

		containerId, _, err := daemon.ContainerCreate(test.Name, config, &runconfig.HostConfig{})
		if err != nil {
			if !test.Valid {
				continue
			}
			t.Fatal(err)
		}

		container, err := daemon.Get(containerId)
		if err != nil {
			t.Fatal(err)
		}

		if container.Name != "/"+test.Name {
			t.Fatalf("Expect /%s got %s", test.Name, container.Name)
		}

		if c, err := daemon.Get("/" + test.Name); err != nil {
			t.Fatalf("Couldn't retrieve test container as /%s", test.Name)
		} else if c.ID != container.ID {
			t.Fatalf("Container /%s has ID %s instead of %s", test.Name, c.ID, container.ID)
		}
	}
}

func TestDestroy(t *testing.T) {
	daemon := mkDaemon(t)
	defer nuke(daemon)

	container, _, err := daemon.Create(&runconfig.Config{
		Image: GetTestImage(daemon).ID,
		Cmd:   []string{"ls", "-al"},
	},
		&runconfig.HostConfig{},
		"")
	if err != nil {
		t.Fatal(err)
	}
	// Destroy
	if err := daemon.Destroy(container); err != nil {
		t.Error(err)
	}

	// Make sure daemon.Exists() behaves correctly
	if daemon.Exists("test_destroy") {
		t.Errorf("Exists() returned true")
	}

	// Make sure daemon.List() doesn't list the destroyed container
	if len(daemon.List()) != 0 {
		t.Errorf("Expected 0 container, %v found", len(daemon.List()))
	}

	// Make sure daemon.Get() refuses to return the unexisting container
	if daemon.Get(container.ID) != nil {
		t.Errorf("Unable to get newly created container")
	}

	// Test double destroy
	if err := daemon.Destroy(container); err == nil {
		// It should have failed
		t.Errorf("Double destroy did not fail")
	}
}

func startEchoServerContainer(t *testing.T, proto string) (*daemon.Daemon, *daemon.Container, string) {
	var (
		err          error
		id           string
		outputBuffer = bytes.NewBuffer(nil)
		strPort      string
		eng          = NewTestEngine(t)
		daemon       = mkDaemonFromEngine(eng, t)
		port         = 5554
		p            nat.Port
	)
	defer func() {
		if err != nil {
			daemon.Nuke()
		}
	}()

	for {
		port += 1
		strPort = strconv.Itoa(port)
		var cmd string
		if proto == "tcp" {
			cmd = "socat TCP-LISTEN:" + strPort + ",reuseaddr,fork EXEC:/bin/cat"
		} else if proto == "udp" {
			cmd = "socat UDP-RECVFROM:" + strPort + ",fork EXEC:/bin/cat"
		} else {
			t.Fatal(fmt.Errorf("Unknown protocol %v", proto))
		}
		ep := make(map[nat.Port]struct{}, 1)
		p = nat.Port(fmt.Sprintf("%s/%s", strPort, proto))
		ep[p] = struct{}{}

		jobCreate := eng.Job("create")
		jobCreate.Setenv("Image", unitTestImageID)
		jobCreate.SetenvList("Cmd", []string{"sh", "-c", cmd})
		jobCreate.SetenvList("PortSpecs", []string{fmt.Sprintf("%s/%s", strPort, proto)})
		jobCreate.SetenvJson("ExposedPorts", ep)
		jobCreate.Stdout.Add(outputBuffer)
		if err := jobCreate.Run(); err != nil {
			t.Fatal(err)
		}
		id = engine.Tail(outputBuffer, 1)
		// FIXME: this relies on the undocumented behavior of daemon.Create
		// which will return a nil error AND container if the exposed ports
		// are invalid. That behavior should be fixed!
		if id != "" {
			break
		}
		t.Logf("Port %v already in use, trying another one", strPort)

	}

	jobStart := eng.Job("start", id)
	portBindings := make(map[nat.Port][]nat.PortBinding)
	portBindings[p] = []nat.PortBinding{
		{},
	}
	if err := jobStart.SetenvJson("PortsBindings", portBindings); err != nil {
		t.Fatal(err)
	}
	if err := jobStart.Run(); err != nil {
		t.Fatal(err)
	}

	container := daemon.Get(id)
	if container == nil {
		t.Fatalf("Couldn't fetch test container %s", id)
	}

	setTimeout(t, "Waiting for the container to be started timed out", 2*time.Second, func() {
		for !container.IsRunning() {
			time.Sleep(10 * time.Millisecond)
		}
	})

	// Even if the state is running, lets give some time to lxc to spawn the process
	container.WaitStop(500 * time.Millisecond)

	strPort = container.NetworkSettings.Ports[p][0].HostPort
	return daemon, container, strPort
}

func TestDaemonCreate(t *testing.T) {
	daemon := mkDaemon(t)
	defer nuke(daemon)

	// Make sure we start we 0 containers
	if len(daemon.List()) != 0 {
		t.Errorf("Expected 0 containers, %v found", len(daemon.List()))
	}

	container, _, err := daemon.Create(&runconfig.Config{
		Image: GetTestImage(daemon).ID,
		Cmd:   []string{"ls", "-al"},
	},
		"",
	)
	if err != nil {
		t.Fatal(err)
	}

	defer func() {
		if err := daemon.Destroy(container); err != nil {
			t.Error(err)
		}
	}()

	// Make sure we can find the newly created container with List()
	if len(daemon.List()) != 1 {
		t.Errorf("Expected 1 container, %v found", len(daemon.List()))
	}

	// Make sure the container List() returns is the right one
	if daemon.List()[0].ID != container.ID {
		t.Errorf("Unexpected container %v returned by List", daemon.List()[0])
	}

	// Make sure we can get the container with Get()
	if daemon.Get(container.ID) == nil {
		t.Errorf("Unable to get newly created container")
	}

	// Make sure it is the right container
	if daemon.Get(container.ID) != container {
		t.Errorf("Get() returned the wrong container")
	}

	// Make sure Exists returns it as existing
	if !daemon.Exists(container.ID) {
		t.Errorf("Exists() returned false for a newly created container")
	}

	// Test that conflict error displays correct details
	testContainer, _, _ := daemon.Create(
		&runconfig.Config{
			Image: GetTestImage(daemon).ID,
			Cmd:   []string{"ls", "-al"},
		},
		"conflictname",
	)
	if _, _, err := daemon.Create(&runconfig.Config{Image: GetTestImage(daemon).ID, Cmd: []string{"ls", "-al"}}, testContainer.Name); err == nil || !strings.Contains(err.Error(), utils.TruncateID(testContainer.ID)) {
		t.Fatalf("Name conflict error doesn't include the correct short id. Message was: %s", err.Error())
	}

	// Make sure create with bad parameters returns an error
	if _, _, err = daemon.Create(&runconfig.Config{Image: GetTestImage(daemon).ID}, ""); err == nil {
		t.Fatal("Builder.Create should throw an error when Cmd is missing")
	}

	if _, _, err := daemon.Create(
		&runconfig.Config{
			Image: GetTestImage(daemon).ID,
			Cmd:   []string{},
		},
		"",
	); err == nil {
		t.Fatal("Builder.Create should throw an error when Cmd is empty")
	}

	config := &runconfig.Config{
		Image:     GetTestImage(daemon).ID,
		Cmd:       []string{"/bin/ls"},
		PortSpecs: []string{"80"},
	}
	container, _, err = daemon.Create(config, "")

	_, err = daemon.Commit(container, "testrepo", "testtag", "", "", true, config)
	if err != nil {
		t.Error(err)
	}

	// test expose 80:8000
	container, warnings, err := daemon.Create(&runconfig.Config{
		Image:     GetTestImage(daemon).ID,
		Cmd:       []string{"ls", "-al"},
		PortSpecs: []string{"80:8000"},
	},
		"",
	)
	if err != nil {
		t.Fatal(err)
	}
//.........這裏部分代碼省略.........

func containerAssertNotExists(eng *engine.Engine, id string, t log.Fataler) {
	daemon := mkDaemonFromEngine(eng, t)
	if c := daemon.Get(id); c != nil {
		t.Fatal(fmt.Errorf("Container %s should not exist", id))
	}
}

func startEchoServerContainer(t *testing.T, proto string) (*daemon.Daemon, *daemon.Container, string) {
	var (
		err     error
		id      string
		strPort string
		eng     = NewTestEngine(t)
		daemon  = mkDaemonFromEngine(eng, t)
		port    = 5554
		p       nat.Port
	)
	defer func() {
		if err != nil {
			daemon.Nuke()
		}
	}()

	for {
		port += 1
		strPort = strconv.Itoa(port)
		var cmd string
		if proto == "tcp" {
			cmd = "socat TCP-LISTEN:" + strPort + ",reuseaddr,fork EXEC:/bin/cat"
		} else if proto == "udp" {
			cmd = "socat UDP-RECVFROM:" + strPort + ",fork EXEC:/bin/cat"
		} else {
			t.Fatal(fmt.Errorf("Unknown protocol %v", proto))
		}
		ep := make(map[nat.Port]struct{}, 1)
		p = nat.Port(fmt.Sprintf("%s/%s", strPort, proto))
		ep[p] = struct{}{}

		c := &runconfig.Config{
			Image:        unitTestImageID,
			Cmd:          runconfig.NewCommand("sh", "-c", cmd),
			PortSpecs:    []string{fmt.Sprintf("%s/%s", strPort, proto)},
			ExposedPorts: ep,
		}

		id, _, err = daemon.ContainerCreate(unitTestImageID, c, &runconfig.HostConfig{})
		// FIXME: this relies on the undocumented behavior of daemon.Create
		// which will return a nil error AND container if the exposed ports
		// are invalid. That behavior should be fixed!
		if id != "" {
			break
		}
		t.Logf("Port %v already in use, trying another one", strPort)

	}

	if err := daemon.ContainerStart(id, &runconfig.HostConfig{}); err != nil {
		t.Fatal(err)
	}

	container, err := daemon.Get(id)
	if err != nil {
		t.Fatal(err)
	}

	setTimeout(t, "Waiting for the container to be started timed out", 2*time.Second, func() {
		for !container.IsRunning() {
			time.Sleep(10 * time.Millisecond)
		}
	})

	// Even if the state is running, lets give some time to lxc to spawn the process
	container.WaitStop(500 * time.Millisecond)

	strPort = container.NetworkSettings.Ports[p][0].HostPort
	return daemon, container, strPort
}