Golang state.Change类代码示例

func snapsOp(c *Command, r *http.Request, user *auth.UserState) Response {
	route := c.d.router.Get(stateChangeCmd.Path)
	if route == nil {
		return InternalError("cannot find route for change")
	}

	decoder := json.NewDecoder(r.Body)
	var inst snapInstruction
	if err := decoder.Decode(&inst); err != nil {
		return BadRequest("cannot decode request body into snap instruction: %v", err)
	}

	if inst.Channel != "" || !inst.Revision.Unset() || inst.DevMode || inst.JailMode {
		return BadRequest("unsupported option provided for multi-snap operation")
	}

	st := c.d.overlord.State()
	st.Lock()
	defer st.Unlock()

	if user != nil {
		inst.userID = user.ID
	}

	var msg string
	var affected []string
	var tsets []*state.TaskSet
	var err error
	switch inst.Action {
	case "refresh":
		msg, affected, tsets, err = snapUpdateMany(&inst, st)
	case "install":
		msg, affected, tsets, err = snapInstallMany(&inst, st)
	case "remove":
		msg, affected, tsets, err = snapRemoveMany(&inst, st)
	default:
		return BadRequest("unsupported multi-snap operation %q", inst.Action)
	}
	if err != nil {
		return InternalError("cannot %s %q: %v", inst.Action, inst.Snaps, err)
	}

	var chg *state.Change
	if len(tsets) == 0 {
		chg = st.NewChange(inst.Action+"-snap", msg)
		chg.SetStatus(state.DoneStatus)
	} else {
		chg = newChange(st, inst.Action+"-snap", msg, tsets, affected)
		ensureStateSoon(st)
	}
	chg.Set("api-data", map[string]interface{}{"snap-names": affected})

	return AsyncResponse(nil, &Meta{Change: chg.ID()})
}

func ensureChange(c *C, r *state.TaskRunner, sb *stateBackend, chg *state.Change) {
	for i := 0; i < 10; i++ {
		sb.ensureBefore = time.Hour
		r.Ensure()
		r.Wait()
		chg.State().Lock()
		s := chg.Status()
		chg.State().Unlock()
		if s.Ready() {
			return
		}
		if sb.ensureBefore > 0 {
			break
		}
	}
	var statuses []string
	chg.State().Lock()
	for _, t := range chg.Tasks() {
		statuses = append(statuses, t.Summary()+":"+t.Status().String())
	}
	chg.State().Unlock()
	c.Fatalf("Change didn't reach final state without blocking: %s", strings.Join(statuses, " "))
}

func (s *deviceMgrSuite) TestFullDeviceRegistrationHappyPrepareDeviceHook(c *C) {
	r1 := devicestate.MockKeyLength(752)
	defer r1()

	mockServer := s.mockServer(c, "REQID-1")
	defer mockServer.Close()

	r2 := hookstate.MockRunHook(func(ctx *hookstate.Context, _ *tomb.Tomb) ([]byte, error) {
		c.Assert(ctx.HookName(), Equals, "prepare-device")

		// snapctl set the registration params
		_, _, err := ctlcmd.Run(ctx, []string{"set", fmt.Sprintf("device-service.url=%q", mockServer.URL+"/identity/api/v1/")})
		c.Assert(err, IsNil)

		h, err := json.Marshal(map[string]string{
			"x-extra-header": "extra",
		})
		c.Assert(err, IsNil)
		_, _, err = ctlcmd.Run(ctx, []string{"set", fmt.Sprintf("device-service.headers=%s", string(h))})
		c.Assert(err, IsNil)

		_, _, err = ctlcmd.Run(ctx, []string{"set", fmt.Sprintf("registration.proposed-serial=%q", "Y9999")})
		c.Assert(err, IsNil)

		d, err := yaml.Marshal(map[string]string{
			"mac": "00:00:00:00:ff:00",
		})
		c.Assert(err, IsNil)
		_, _, err = ctlcmd.Run(ctx, []string{"set", fmt.Sprintf("registration.body=%q", d)})
		c.Assert(err, IsNil)

		return nil, nil
	})
	defer r2()

	// setup state as will be done by first-boot
	// & have a gadget with a prepare-device hook
	s.state.Lock()
	defer s.state.Unlock()

	s.setupGadget(c, `
name: gadget
type: gadget
version: gadget
hooks:
    prepare-device:
`, "")

	auth.SetDevice(s.state, &auth.DeviceState{
		Brand: "canonical",
		Model: "pc",
	})

	// runs the whole device registration process
	s.state.Unlock()
	s.settle()
	s.state.Lock()

	var becomeOperational *state.Change
	for _, chg := range s.state.Changes() {
		if chg.Kind() == "become-operational" {
			becomeOperational = chg
			break
		}
	}
	c.Assert(becomeOperational, NotNil)

	c.Check(becomeOperational.Status().Ready(), Equals, true)
	c.Check(becomeOperational.Err(), IsNil)

	device, err := auth.Device(s.state)
	c.Assert(err, IsNil)
	c.Check(device.Brand, Equals, "canonical")
	c.Check(device.Model, Equals, "pc")
	c.Check(device.Serial, Equals, "Y9999")

	a, err := s.db.Find(asserts.SerialType, map[string]string{
		"brand-id": "canonical",
		"model":    "pc",
		"serial":   "Y9999",
	})
	c.Assert(err, IsNil)
	serial := a.(*asserts.Serial)

	var details map[string]interface{}
	err = yaml.Unmarshal(serial.Body(), &details)
	c.Assert(err, IsNil)

	c.Check(details, DeepEquals, map[string]interface{}{
		"mac": "00:00:00:00:ff:00",
	})

	privKey, err := s.mgr.KeypairManager().Get(serial.DeviceKey().ID())
	c.Assert(err, IsNil)
	c.Check(privKey, NotNil)

	c.Check(device.KeyID, Equals, privKey.PublicKey().ID())
}

func (s *deviceMgrSuite) TestFullDeviceRegistrationPollHappy(c *C) {
	r1 := devicestate.MockKeyLength(752)
	defer r1()

	mockServer := s.mockServer(c, "REQID-POLL")
	defer mockServer.Close()

	mockRequestIDURL := mockServer.URL + "/identity/api/v1/request-id"
	r2 := devicestate.MockRequestIDURL(mockRequestIDURL)
	defer r2()

	mockSerialRequestURL := mockServer.URL + "/identity/api/v1/devices"
	r3 := devicestate.MockSerialRequestURL(mockSerialRequestURL)
	defer r3()

	// immediately
	r4 := devicestate.MockRetryInterval(0)
	defer r4()

	// setup state as will be done by first-boot
	s.state.Lock()
	defer s.state.Unlock()

	s.setupGadget(c, `
name: gadget
type: gadget
version: gadget
`, "")

	auth.SetDevice(s.state, &auth.DeviceState{
		Brand: "canonical",
		Model: "pc",
	})

	// runs the whole device registration process with polling
	s.state.Unlock()
	s.settle()
	s.state.Lock()

	var becomeOperational *state.Change
	for _, chg := range s.state.Changes() {
		if chg.Kind() == "become-operational" {
			becomeOperational = chg
			break
		}
	}
	c.Assert(becomeOperational, NotNil)

	c.Check(becomeOperational.Status().Ready(), Equals, true)
	c.Check(becomeOperational.Err(), IsNil)

	device, err := auth.Device(s.state)
	c.Assert(err, IsNil)
	c.Check(device.Brand, Equals, "canonical")
	c.Check(device.Model, Equals, "pc")
	c.Check(device.Serial, Equals, "10002")

	a, err := s.db.Find(asserts.SerialType, map[string]string{
		"brand-id": "canonical",
		"model":    "pc",
		"serial":   "10002",
	})
	c.Assert(err, IsNil)
	serial := a.(*asserts.Serial)

	privKey, err := s.mgr.KeypairManager().Get(serial.DeviceKey().ID())
	c.Assert(err, IsNil)
	c.Check(privKey, NotNil)

	c.Check(device.KeyID, Equals, privKey.PublicKey().ID())
}

func change2changeInfo(chg *state.Change) *changeInfo {
	status := chg.Status()
	chgInfo := &changeInfo{
		ID:      chg.ID(),
		Kind:    chg.Kind(),
		Summary: chg.Summary(),
		Status:  status.String(),
		Ready:   status.Ready(),

		SpawnTime: chg.SpawnTime(),
	}
	readyTime := chg.ReadyTime()
	if !readyTime.IsZero() {
		chgInfo.ReadyTime = &readyTime
	}
	if err := chg.Err(); err != nil {
		chgInfo.Err = err.Error()
	}

	tasks := chg.Tasks()
	taskInfos := make([]*taskInfo, len(tasks))
	for j, t := range tasks {
		label, done, total := t.Progress()

		taskInfo := &taskInfo{
			ID:      t.ID(),
			Kind:    t.Kind(),
			Summary: t.Summary(),
			Status:  t.Status().String(),
			Log:     t.Log(),
			Progress: taskInfoProgress{
				Label: label,
				Done:  done,
				Total: total,
			},
			SpawnTime: t.SpawnTime(),
		}
		readyTime := t.ReadyTime()
		if !readyTime.IsZero() {
			taskInfo.ReadyTime = &readyTime
		}
		taskInfos[j] = taskInfo
	}
	chgInfo.Tasks = taskInfos

	var data map[string]*json.RawMessage
	if chg.Get("api-data", &data) == nil {
		chgInfo.Data = data
	}

	return chgInfo
}