Golang SnapState.DevMode方法代码示例

func (s *interfaceManagerSuite) undoDevModeCheck(c *C, flags snappy.InstallFlags, devMode bool) {
	// Put the OS and sample snaps in place.
	s.mockSnap(c, osSnapYaml)
	snapInfo := s.mockSnap(c, sampleSnapYaml)

	// Initialize the manager. This registers both snaps.
	mgr := s.manager(c)

	// Run the setup-profiles task in UndoMode and let it finish.
	change := s.addSetupSnapSecurityChange(c, &snapstate.SnapSetup{
		Name: snapInfo.Name(), Flags: int(flags), Revision: snapInfo.Revision})
	s.state.Lock()
	task := change.Tasks()[0]
	// Inject the old value of DevMode flag for the task handler to restore
	task.Set("old-devmode", devMode)
	task.SetStatus(state.UndoStatus)
	s.state.Unlock()
	mgr.Ensure()
	mgr.Wait()
	mgr.Stop()

	// Change succeeds
	s.state.Lock()
	defer s.state.Unlock()
	c.Check(change.Status(), Equals, state.UndoneStatus)

	// SnapState.Flags now holds the original value of DevMode
	var snapState snapstate.SnapState
	err := snapstate.Get(s.state, snapInfo.Name(), &snapState)
	c.Assert(err, IsNil)
	c.Check(snapState.DevMode(), Equals, devMode)
}

func setupSnapSecurity(task *state.Task, snapInfo *snap.Info, repo *interfaces.Repository) error {
	st := task.State()
	var snapState snapstate.SnapState
	snapName := snapInfo.Name()
	if err := snapstate.Get(st, snapName, &snapState); err != nil {
		task.Errorf("cannot get state of snap %q: %s", snapName, err)
		return err
	}
	for _, backend := range securityBackends {
		st.Unlock()
		err := backend.Setup(snapInfo, snapState.DevMode(), repo)
		st.Lock()
		if err != nil {
			task.Errorf("cannot setup %s for snap %q: %s", backend.Name(), snapName, err)
			return err
		}
	}
	return nil
}

// The setup-profiles task will honor snappy.DeveloperMode flag by storing it
// in the SnapState.Flags (as DevMode) and by actually setting up security
// using that flag. Old copy of SnapState.Flag's DevMode is saved for the undo
// handler under `old-devmode`.
func (s *interfaceManagerSuite) TestSetupProfilesHonorsDevMode(c *C) {
	// Put the OS snap in place.
	mgr := s.manager(c)

	// Initialize the manager. This registers the OS snap.
	snapInfo := s.mockSnap(c, sampleSnapYaml)

	// Run the setup-profiles task and let it finish.
	// Note that the task will see SnapSetup.Flags equal to DeveloperMode.
	change := s.addSetupSnapSecurityChange(c, &snapstate.SnapSetup{
		Name: snapInfo.Name(), Flags: int(snappy.DeveloperMode), Revision: snapInfo.Revision})
	mgr.Ensure()
	mgr.Wait()
	mgr.Stop()

	s.state.Lock()
	defer s.state.Unlock()

	// Ensure that the task succeeded.
	c.Check(change.Status(), Equals, state.DoneStatus)

	// The snap was setup with DevMode equal to true.
	c.Assert(s.secBackend.SetupCalls, HasLen, 1)
	c.Assert(s.secBackend.RemoveCalls, HasLen, 0)
	c.Check(s.secBackend.SetupCalls[0].SnapInfo.Name(), Equals, "snap")
	c.Check(s.secBackend.SetupCalls[0].DevMode, Equals, true)

	// SnapState stored the value of DevMode
	var snapState snapstate.SnapState
	err := snapstate.Get(s.state, snapInfo.Name(), &snapState)
	c.Assert(err, IsNil)
	c.Check(snapState.DevMode(), Equals, true)

	// The old value of DevMode was saved in the task in case undo is needed.
	task := change.Tasks()[0]
	var oldDevMode bool
	err = task.Get("old-devmode", &oldDevMode)
	c.Assert(err, IsNil)
	c.Check(oldDevMode, Equals, false)
}

func (m *InterfaceManager) doSetupProfiles(task *state.Task, _ *tomb.Tomb) error {
	task.State().Lock()
	defer task.State().Unlock()

	// Get snap.Info from bits handed by the snap manager.
	ss, err := snapstate.TaskSnapSetup(task)
	if err != nil {
		return err
	}
	snapInfo, err := snapstate.Info(task.State(), ss.Name, ss.Revision)
	if err != nil {
		return err
	}
	snap.AddImplicitSlots(snapInfo)
	snapName := snapInfo.Name()
	var snapState snapstate.SnapState
	if err := snapstate.Get(task.State(), snapName, &snapState); err != nil {
		task.Errorf("cannot get state of snap %q: %s", snapName, err)
		return err
	}

	// Set DevMode flag if SnapSetup.Flags indicates it should be done
	// but remember the old value in the task in case we undo.
	task.Set("old-devmode", snapState.DevMode())
	if ss.DevMode() {
		snapState.Flags |= snapstate.DevMode
	} else {
		snapState.Flags &= ^snapstate.DevMode
	}
	snapstate.Set(task.State(), snapName, &snapState)

	// The snap may have been updated so perform the following operation to
	// ensure that we are always working on the correct state:
	//
	// - disconnect all connections to/from the given snap
	//   - remembering the snaps that were affected by this operation
	// - remove the (old) snap from the interfaces repository
	// - add the (new) snap to the interfaces repository
	// - restore connections based on what is kept in the state
	//   - if a connection cannot be restored then remove it from the state
	// - setup the security of all the affected snaps
	blacklist := m.repo.AutoConnectBlacklist(snapName)
	affectedSnaps, err := m.repo.DisconnectSnap(snapName)
	if err != nil {
		return err
	}
	// XXX: what about snap renames? We should remove the old name (or switch
	// to IDs in the interfaces repository)
	if err := m.repo.RemoveSnap(snapName); err != nil {
		return err
	}
	if err := m.repo.AddSnap(snapInfo); err != nil {
		if _, ok := err.(*interfaces.BadInterfacesError); ok {
			logger.Noticef("%s", err)
		} else {
			return err
		}
	}
	if err := m.reloadConnections(snapName); err != nil {
		return err
	}
	if err := m.autoConnect(task, snapName, blacklist); err != nil {
		return err
	}
	if len(affectedSnaps) == 0 {
		affectedSnaps = append(affectedSnaps, snapInfo)
	}
	for _, snapInfo := range affectedSnaps {
		if err := setupSnapSecurity(task, snapInfo, m.repo); err != nil {
			return state.Retry
		}
	}
	return nil
}