Exemple #1
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func (cs *taskSuite) TestNewTaskSet(c *C) {
	ts0 := state.NewTaskSet()
	c.Check(ts0.Tasks(), HasLen, 0)

	st := state.New(nil)
	st.Lock()
	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("install", "2...")
	ts2 := state.NewTaskSet(t1, t2)
	st.Unlock()

	c.Assert(ts2.Tasks(), DeepEquals, []*state.Task{t1, t2})
}
Exemple #2
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func (ts *taskSuite) TestTaskSetWaitAll(c *C) {
	st := state.New(nil)
	st.Lock()
	defer st.Unlock()

	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("check", "2...")
	t3 := st.NewTask("setup", "3...")
	t4 := st.NewTask("link", "4...")
	ts12 := state.NewTaskSet(t1, t2)
	ts34 := state.NewTaskSet(t3, t4)
	ts34.WaitAll(ts12)

	c.Assert(t3.WaitTasks(), DeepEquals, []*state.Task{t1, t2})
	c.Assert(t4.WaitTasks(), DeepEquals, []*state.Task{t1, t2})
	c.Assert(t1.HaltTasks(), HasLen, 2)
	c.Assert(t2.HaltTasks(), HasLen, 2)
}
Exemple #3
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// Disconnect returns a set of tasks for  disconnecting an interface.
func Disconnect(s *state.State, plugSnap, plugName, slotSnap, slotName string) (*state.TaskSet, error) {
	// TODO: Remove the intent-to-connect from the state so that we no longer
	// automatically try to reconnect on reboot.
	summary := fmt.Sprintf(i18n.G("Disconnect %s:%s from %s:%s"),
		plugSnap, plugName, slotSnap, slotName)
	task := s.NewTask("disconnect", summary)
	task.Set("slot", interfaces.SlotRef{Snap: slotSnap, Name: slotName})
	task.Set("plug", interfaces.PlugRef{Snap: plugSnap, Name: plugName})
	return state.NewTaskSet(task), nil
}
Exemple #4
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func (s *interfaceManagerSuite) addSetupSnapSecurityChange(c *C, ss *snapstate.SnapSetup) *state.Change {
	s.state.Lock()
	defer s.state.Unlock()

	task := s.state.NewTask("setup-profiles", "")
	task.Set("snap-setup", ss)
	taskset := state.NewTaskSet(task)
	change := s.state.NewChange("test", "")
	change.AddAll(taskset)
	return change
}
Exemple #5
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// Connect returns a set of tasks for connecting an interface.
//
func Connect(s *state.State, plugSnap, plugName, slotSnap, slotName string) (*state.TaskSet, error) {
	// TODO: Store the intent-to-connect in the state so that we automatically
	// try to reconnect on reboot (reconnection can fail or can connect with
	// different parameters so we cannot store the actual connection details).
	summary := fmt.Sprintf(i18n.G("Connect %s:%s to %s:%s"),
		plugSnap, plugName, slotSnap, slotName)
	task := s.NewTask("connect", summary)
	task.Set("slot", interfaces.SlotRef{Snap: slotSnap, Name: slotName})
	task.Set("plug", interfaces.PlugRef{Snap: plugSnap, Name: plugName})
	return state.NewTaskSet(task), nil
}
Exemple #6
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func (s *interfaceManagerSuite) addDiscardConnsChange(c *C, snapName string) *state.Change {
	s.state.Lock()
	defer s.state.Unlock()

	task := s.state.NewTask("discard-conns", "")
	ss := snapstate.SnapSetup{Name: snapName}
	task.Set("snap-setup", ss)
	taskset := state.NewTaskSet(task)
	change := s.state.NewChange("test", "")
	change.AddAll(taskset)
	return change
}
Exemple #7
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func (s *interfaceManagerSuite) addRemoveSnapSecurityChange(c *C, snapName string) *state.Change {
	s.state.Lock()
	defer s.state.Unlock()

	task := s.state.NewTask("remove-profiles", "")
	ss := snapstate.SnapSetup{Name: snapName}
	task.Set("snap-setup", ss)
	taskset := state.NewTaskSet(task)
	change := s.state.NewChange("test", "")
	change.AddAll(taskset)
	return change
}
Exemple #8
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func (ts *taskSuite) TestTaskSetAddTaskAndAddAll(c *C) {
	st := state.New(nil)
	st.Lock()
	defer st.Unlock()

	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("check", "2...")
	t3 := st.NewTask("setup", "3...")
	t4 := st.NewTask("link", "4...")

	ts0 := state.NewTaskSet(t1)

	ts0.AddTask(t2)
	ts0.AddAll(state.NewTaskSet(t3, t4))

	// these do nothing
	ts0.AddTask(t2)
	ts0.AddAll(state.NewTaskSet(t3, t4))

	c.Check(ts0.Tasks(), DeepEquals, []*state.Task{t1, t2, t3, t4})
}
Exemple #9
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func (ts *taskSuite) TestTaskWaitAll(c *C) {
	st := state.New(nil)
	st.Lock()
	defer st.Unlock()

	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("install", "2...")
	t3 := st.NewTask("setup", "3...")
	t3.WaitAll(state.NewTaskSet(t1, t2))

	c.Assert(t3.WaitTasks(), HasLen, 2)
	c.Assert(t1.HaltTasks(), DeepEquals, []*state.Task{t3})
	c.Assert(t2.HaltTasks(), DeepEquals, []*state.Task{t3})
}
Exemple #10
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func (ts *taskSuite) TestTaskSetWaitFor(c *C) {
	st := state.New(nil)
	st.Lock()
	defer st.Unlock()

	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("install", "2...")
	t3 := st.NewTask("setup", "3...")
	ts23 := state.NewTaskSet(t2, t3)
	ts23.WaitFor(t1)

	c.Assert(t2.WaitTasks(), DeepEquals, []*state.Task{t1})
	c.Assert(t3.WaitTasks(), DeepEquals, []*state.Task{t1})
	c.Assert(t1.HaltTasks(), HasLen, 2)
}
Exemple #11
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func (cs *changeSuite) TestAddAll(c *C) {
	st := state.New(nil)
	st.Lock()
	defer st.Unlock()

	chg := st.NewChange("install", "...")

	t1 := st.NewTask("download", "1...")
	t2 := st.NewTask("verify", "2...")
	chg.AddAll(state.NewTaskSet(t1, t2))

	tasks := chg.Tasks()
	c.Check(tasks, DeepEquals, []*state.Task{t1, t2})
	c.Check(t1.Change(), Equals, chg)
	c.Check(t2.Change(), Equals, chg)
}
Exemple #12
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func installSnap(chg *state.Change, name, channel string, userID int, flags snappy.InstallFlags) error {
	st := chg.State()
	ts, err := snapstateInstall(st, name, channel, userID, flags)
	if err != nil {
		return err
	}

	// ensure that each of our task runs after the existing tasks
	chgts := state.NewTaskSet(chg.Tasks()...)
	for _, t := range ts.Tasks() {
		t.WaitAll(chgts)
	}
	chg.AddAll(ts)

	return nil
}
Exemple #13
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func (ovs *overlordSuite) TestSettleChain(c *C) {
	restoreIntv := overlord.MockEnsureInterval(1 * time.Minute)
	defer restoreIntv()
	o, err := overlord.New()
	c.Assert(err, IsNil)

	se := o.Engine()
	s := se.State()
	rm1 := newRunnerManager(s)
	se.AddManager(rm1)

	defer o.Engine().Stop()

	s.Lock()
	defer s.Unlock()

	chg := s.NewChange("chg", "...")
	t1 := s.NewTask("runMgr1", "1...")
	t2 := s.NewTask("runMgr2", "2...")
	t2.WaitFor(t1)
	chg.AddAll(state.NewTaskSet(t1, t2))

	s.Unlock()

	o.Settle()

	s.Lock()
	c.Check(t1.Status(), Equals, state.DoneStatus)
	c.Check(t2.Status(), Equals, state.DoneStatus)

	var v int
	err = s.Get("runMgr1Mark", &v)
	c.Check(err, IsNil)
	err = s.Get("runMgr2Mark", &v)
	c.Check(err, IsNil)
}
Exemple #14
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func doInstall(s *state.State, curActive bool, snapName, snapPath, channel string, userID int, flags snappy.InstallFlags) (*state.TaskSet, error) {
	if err := checkChangeConflict(s, snapName); err != nil {
		return nil, err
	}

	if snapPath == "" && channel == "" {
		channel = "stable"
	}

	var prepare *state.Task
	ss := SnapSetup{
		Channel: channel,
		UserID:  userID,
		Flags:   int(flags),
	}
	ss.Name = snapName
	ss.SnapPath = snapPath
	if snapPath != "" {
		prepare = s.NewTask("prepare-snap", fmt.Sprintf(i18n.G("Prepare snap %q"), snapPath))
	} else {
		prepare = s.NewTask("download-snap", fmt.Sprintf(i18n.G("Download snap %q from channel %q"), snapName, channel))
	}
	prepare.Set("snap-setup", ss)

	tasks := []*state.Task{prepare}
	addTask := func(t *state.Task) {
		t.Set("snap-setup-task", prepare.ID())
		tasks = append(tasks, t)
	}

	// mount
	mount := s.NewTask("mount-snap", fmt.Sprintf(i18n.G("Mount snap %q"), snapName))
	addTask(mount)
	mount.WaitFor(prepare)
	precopy := mount

	if curActive {
		// unlink-current-snap (will stop services for copy-data)
		unlink := s.NewTask("unlink-current-snap", fmt.Sprintf(i18n.G("Make current revision for snap %q unavailable"), snapName))
		addTask(unlink)
		unlink.WaitFor(mount)
		precopy = unlink
	}

	// copy-data (needs stopped services by unlink)
	copyData := s.NewTask("copy-snap-data", fmt.Sprintf(i18n.G("Copy snap %q data"), snapName))
	addTask(copyData)
	copyData.WaitFor(precopy)

	// security
	setupSecurity := s.NewTask("setup-profiles", fmt.Sprintf(i18n.G("Setup snap %q security profiles"), snapName))
	addTask(setupSecurity)
	setupSecurity.WaitFor(copyData)

	// finalize (wrappers+current symlink)
	linkSnap := s.NewTask("link-snap", fmt.Sprintf(i18n.G("Make snap %q available to the system"), snapName))
	addTask(linkSnap)
	linkSnap.WaitFor(setupSecurity)

	return state.NewTaskSet(tasks...), nil
}
Exemple #15
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// Remove returns a set of tasks for removing snap.
// Note that the state must be locked by the caller.
func Remove(s *state.State, name string, flags snappy.RemoveFlags) (*state.TaskSet, error) {
	if err := checkChangeConflict(s, name); err != nil {
		return nil, err
	}

	var snapst SnapState
	err := Get(s, name, &snapst)
	if err != nil && err != state.ErrNoState {
		return nil, err
	}

	cur := snapst.Current()
	if cur == nil {
		return nil, fmt.Errorf("cannot find snap %q", name)
	}

	revision := snapst.Current().Revision
	active := snapst.Active

	info, err := Info(s, name, revision)
	if err != nil {
		return nil, err
	}

	ss := SnapSetup{
		Name:     name,
		Revision: revision,
		Flags:    int(flags),
	}

	// check if this is something that can be removed
	if !backend.CanRemove(info, active) {
		return nil, fmt.Errorf("snap %q is not removable", ss.Name)
	}

	// trigger remove

	discardSnap := s.NewTask("discard-snap", fmt.Sprintf(i18n.G("Remove snap %q from the system"), name))
	discardSnap.Set("snap-setup", ss)

	discardSnapID := discardSnap.ID()
	tasks := ([]*state.Task)(nil)
	var chain *state.Task
	addNext := func(t *state.Task) {
		if chain != nil {
			t.WaitFor(chain)
		}
		if t.ID() != discardSnapID {
			t.Set("snap-setup-task", discardSnapID)
		}
		tasks = append(tasks, t)
		chain = t
	}

	if active {
		unlink := s.NewTask("unlink-snap", fmt.Sprintf(i18n.G("Make snap %q unavailable to the system"), name))

		addNext(unlink)
	}

	removeSecurity := s.NewTask("remove-profiles", fmt.Sprintf(i18n.G("Remove security profile for snap %q"), name))
	addNext(removeSecurity)

	clearData := s.NewTask("clear-snap", fmt.Sprintf(i18n.G("Remove data for snap %q"), name))
	addNext(clearData)

	addNext(discardSnap)

	if len(snapst.Sequence) == 1 {
		discardConns := s.NewTask("discard-conns", fmt.Sprintf(i18n.G("Discard interface connections for snap %q"), name))
		addNext(discardConns)
	}

	return state.NewTaskSet(tasks...), nil
}