Golang Set.Contains方法代碼示例

func (m *systemdUnitManager) GetUnitStates(filter pkg.Set) (map[string]*unit.UnitState, error) {
	// Unfortunately we need to lock for the entire operation to ensure we
	// have a consistent view of the hashes. Otherwise, Load/Unload
	// operations could mutate the hashes before we've retrieved the state
	// for every unit in the filter, since they won't necessarily all be
	// present in the initial ListUnits() call.
	fallback := false

	m.mutex.Lock()
	defer m.mutex.Unlock()
	dbusStatuses, err := m.systemd.ListUnitsByNames(filter.Values())

	if err != nil {
		fallback = true
		log.Debugf("ListUnitsByNames is not implemented in your systemd version (requires at least systemd 230), fallback to ListUnits: %v", err)
		dbusStatuses, err = m.systemd.ListUnits()
		if err != nil {
			return nil, err
		}
	}

	states := make(map[string]*unit.UnitState)
	for _, dus := range dbusStatuses {
		if fallback && !filter.Contains(dus.Name) {
			// If filter could not be applied on DBus side, we will filter unit files here
			continue
		}

		us := &unit.UnitState{
			LoadState:   dus.LoadState,
			ActiveState: dus.ActiveState,
			SubState:    dus.SubState,
		}
		if h, ok := m.hashes[dus.Name]; ok {
			us.UnitHash = h.String()
		}
		states[dus.Name] = us
	}

	// grab data on subscribed units that didn't show up in ListUnits in fallback mode, most
	// likely due to being inactive
	if fallback {
		for _, name := range filter.Values() {
			if _, ok := states[name]; ok {
				continue
			}

			us, err := m.getUnitState(name)
			if err != nil {
				return nil, err
			}
			if h, ok := m.hashes[name]; ok {
				us.UnitHash = h.String()
			}
			states[name] = us
		}
	}

	return states, nil
}

func (m *systemdUnitManager) GetUnitStates(filter pkg.Set) (map[string]*unit.UnitState, error) {
	// Unfortunately we need to lock for the entire operation to ensure we
	// have a consistent view of the hashes. Otherwise, Load/Unload
	// operations could mutate the hashes before we've retrieved the state
	// for every unit in the filter, since they won't necessarily all be
	// present in the initial ListUnits() call.
	m.mutex.Lock()
	defer m.mutex.Unlock()
	dbusStatuses, err := m.systemd.ListUnits()

	if err != nil {
		return nil, err
	}

	states := make(map[string]*unit.UnitState)
	for _, dus := range dbusStatuses {
		if !filter.Contains(dus.Name) {
			continue
		}

		us := &unit.UnitState{
			LoadState:   dus.LoadState,
			ActiveState: dus.ActiveState,
			SubState:    dus.SubState,
		}
		if h, ok := m.hashes[dus.Name]; ok {
			us.UnitHash = h.String()
		}
		states[dus.Name] = us
	}

	// grab data on subscribed units that didn't show up in ListUnits, most
	// likely due to being inactive
	for _, name := range filter.Values() {
		if _, ok := states[name]; ok {
			continue
		}

		us, err := m.getUnitState(name)
		if err != nil {
			return nil, err
		}
		if h, ok := m.hashes[name]; ok {
			us.UnitHash = h.String()
		}
		states[name] = us
	}

	return states, nil
}

func (ar *AgentReconciler) calculateTasksForOffer(dState *agentState, ms *machine.MachineState, j *job.Job, bids pkg.Set, taskchan chan *task) {
	if bids.Contains(ms.ID) {
		log.V(1).Infof("Bid already submitted for unresolved JobOffer(%s)", j.Name)
		return
	}

	if able, reason := ar.ableToRun(dState, ms, j); !able {
		log.V(1).Infof("Not bidding on Job(%s): %s", j.Name, reason)
		return
	}

	taskchan <- &task{
		Type:   taskTypeSubmitBid,
		Job:    j,
		Reason: taskReasonAbleToResolveOffer,
	}
}