principalNetworkDomain.go

package nucleus

import (
	"context"
	"github.com/google/uuid"
)

// PrincipalNetworkDomain provides an
// interface for PND implementations
type PrincipalNetworkDomain interface {
	Destroy() error
	AddSbi(SouthboundInterface) error
	RemoveSbi(string) error
	AddDevice(*Device) error
	RemoveDevice(uuid uuid.UUID) error
	Request(uuid.UUID, string) error
	RequestAll(string) error
	GetName() string
	GetDescription() string
	GetDevices() map[uuid.UUID]*Device
	GetSBIs() map[string]SouthboundInterface
}

type pndImplementation struct {
	Name        string                 `json:"name"`
	Description string                 `json:"description"`
	Sbi         SouthboundInterfaceMap `json:"sbis"`
	Devices     map[uuid.UUID]*Device  `json:"devices"`
}

//NewPND creates a Principle Network Domain
func NewPND(name, description string, sbi SouthboundInterface) PrincipalNetworkDomain {
	sbic := make(map[string]SouthboundInterface)
	sbic["default"] = sbi
	devices := make(map[uuid.UUID]*Device)
	return &pndImplementation{
		Name:        name,
		Description: description,
		Sbi:         sbic,
		Devices:     devices,
	}
}

func (pnd *pndImplementation) GetName() string {
	return pnd.Name
}

func (pnd *pndImplementation) GetDevices() map[uuid.UUID]*Device {
	return pnd.Devices
}

func (pnd *pndImplementation) GetDescription() string {
	return pnd.Description
}

func (pnd *pndImplementation) GetSBIs() map[string]SouthboundInterface {
	return pnd.Sbi
}

// Interface satisfaction
func (pnd *pndImplementation) Destroy() error {
	return destroy()
}

func (pnd *pndImplementation) AddSbi(sbi SouthboundInterface) error {
	return pnd.addSbi(sbi)
}

func (pnd *pndImplementation) RemoveSbi(sbiIdentifier string) error {
	return pnd.removeSbi(sbiIdentifier)
}

func (pnd *pndImplementation) AddDevice(device *Device) error {
	return pnd.addDevice(device)
}

func (pnd *pndImplementation) RemoveDevice(uuid uuid.UUID) error {
	return pnd.removeDevice(uuid)
}

// Actual implementation, bind to struct if
// neccessary
func destroy() error {
	return nil
}

func (pnd *pndImplementation) addSbi(sbi SouthboundInterface) error {
	pnd.Sbi[sbi.SbiIdentifier()] = sbi
	return nil
}

func (pnd *pndImplementation) removeSbi(sbiIdentifier string) error {
	delete(pnd.Sbi, sbiIdentifier)
	return nil
}

func (pnd *pndImplementation) addDevice(device *Device) error {
	pnd.Devices[device.Config.Uuid] = device
	return nil
}

func (pnd *pndImplementation) removeDevice(uuid uuid.UUID) error {
	delete(pnd.Devices, uuid)
	return nil
}

func (pnd *pndImplementation) Request(uuid uuid.UUID, path string) error {
	d := pnd.Devices[uuid]
	ctx := context.Background()
	_, err := d.Transport.Get(ctx, path)
	if err != nil {
		return err
	}
	return nil
}

func (pnd *pndImplementation) RequestAll(path string) error {
	for k := range pnd.Devices {
		if err := pnd.Request(k, path); err != nil {
			return err
		}
	}
	return nil
}