networkserver

package
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Published: Mar 26, 2020 License: Apache-2.0 Imports: 39 Imported by: 0

Documentation

Overview

Package networkserver provides a LoRaWAN-compliant Network Server implementation.

Index

Constants

View Source
const (
	DefaultStatusCountPeriodicity uint32 = 200
	DefaultStatusTimePeriodicity         = 24 * time.Hour
)
View Source
const DefaultADRMargin = 15

DefaultADRMargin is the default ADR margin used if not specified in MACSettings of the device or NS-wide defaults.

View Source
const DefaultClassBTimeout = time.Minute

DefaultClassBTimeout is the default time-out for the device to respond to class B downlink messages. When waiting for a response times out, the downlink message is considered lost, and the downlink task triggers again.

View Source
const DefaultClassCTimeout = 15 * time.Second

DefaultClassCTimeout is the default time-out for the device to respond to class C downlink messages. When waiting for a response times out, the downlink message is considered lost, and the downlink task triggers again.

Variables

View Source
var DefaultOptions []Option

Functions

This section is empty.

Types

type ApplicationUplinkQueue

type ApplicationUplinkQueue interface {
	// Add adds application uplinks ups to queue.
	// Implementations must ensure that Add returns fast.
	Add(ctx context.Context, ups ...*ttnpb.ApplicationUp) error

	// Subscribe calls f sequentially for each application uplink in the queue.
	// If f returns a non-nil error or ctx is done, Subscribe stops the iteration.
	// TODO: Use ...*ttnpb.ApplicationUp in callback once https://github.com/TheThingsNetwork/lorawan-stack/issues/1523 is implemented.
	Subscribe(ctx context.Context, appID ttnpb.ApplicationIdentifiers, f func(context.Context, *ttnpb.ApplicationUp) error) error
}

type Config

type Config struct {
	ApplicationUplinks  ApplicationUplinkQueue `name:"-"`
	Devices             DeviceRegistry         `name:"-"`
	DownlinkTasks       DownlinkTaskQueue      `name:"-"`
	UplinkDeduplicator  UplinkDeduplicator     `name:"-"`
	NetID               types.NetID            `name:"net-id" description:"NetID of this Network Server"`
	DevAddrPrefixes     []types.DevAddrPrefix  `name:"dev-addr-prefixes" description:"Device address prefixes of this Network Server"`
	DeduplicationWindow time.Duration          `name:"deduplication-window" description:"Time window during which, duplicate messages are collected for metadata"`
	CooldownWindow      time.Duration          `` /* 138-byte string literal not displayed */
	DownlinkPriorities  DownlinkPriorityConfig `name:"downlink-priorities" description:"Downlink message priorities"`
	DefaultMACSettings  MACSettingConfig       `` /* 128-byte string literal not displayed */
	Interop             config.InteropClient   `name:"interop" description:"Interop client configuration"`
	DeviceKEKLabel      string                 `name:"device-kek-label" description:"Label of KEK used to encrypt device keys at rest"`
}

Config represents the NetworkServer configuration.

type DeviceRegistry

type DeviceRegistry interface {
	GetByEUI(ctx context.Context, joinEUI, devEUI types.EUI64, paths []string) (*ttnpb.EndDevice, context.Context, error)
	GetByID(ctx context.Context, appID ttnpb.ApplicationIdentifiers, devID string, paths []string) (*ttnpb.EndDevice, context.Context, error)
	RangeByAddr(ctx context.Context, devAddr types.DevAddr, paths []string, f func(context.Context, *ttnpb.EndDevice) bool) error
	SetByID(ctx context.Context, appID ttnpb.ApplicationIdentifiers, devID string, paths []string, f func(context.Context, *ttnpb.EndDevice) (*ttnpb.EndDevice, []string, error)) (*ttnpb.EndDevice, context.Context, error)
}

DeviceRegistry is a registry, containing devices.

type DownlinkPriorities

type DownlinkPriorities struct {
	// JoinAccept is the downlink priority for join-accept messages.
	JoinAccept,

	MACCommands,

	MaxApplicationDownlink ttnpb.TxSchedulePriority
}

DownlinkPriorities define the schedule priorities for the different types of downlink.

type DownlinkPriorityConfig

type DownlinkPriorityConfig struct {
	// JoinAccept is the downlink priority for join-accept messages.
	JoinAccept string `` /* 131-byte string literal not displayed */
	// MACCommands is the downlink priority for downlink messages with MAC commands as FRMPayload (FPort = 0) or as FOpts.
	// If the MAC commands are carried in FOpts, the highest priority of this value and the concerning application
	// downlink message's priority is used.
	MACCommands string `` /* 142-byte string literal not displayed */
	// MaxApplicationDownlink is the highest priority permitted by the Network Server for application downlink.
	MaxApplicationDownlink string `` /* 161-byte string literal not displayed */
}

DownlinkPriorityConfig defines priorities for downlink messages.

func (DownlinkPriorityConfig) Parse

Parse attempts to parse the configuration and returns a DownlinkPriorities.

type DownlinkTaskQueue

type DownlinkTaskQueue interface {
	// Add adds downlink task for device identified by devID at time t.
	// Implementations must ensure that Add returns fast.
	Add(ctx context.Context, devID ttnpb.EndDeviceIdentifiers, t time.Time, replace bool) error

	// Pop calls f on the most recent downlink task in the schedule, for which timestamp is in range [0, time.Now()],
	// if such is available, otherwise it blocks until it is.
	// Context passed to f must be derived from ctx.
	// Implementations must respect ctx.Deadline() value on best-effort basis, if such is present.
	Pop(ctx context.Context, f func(context.Context, ttnpb.EndDeviceIdentifiers, time.Time) error) error
}

DownlinkTaskQueue represents an entity, that holds downlink tasks sorted by timestamp.

type InteropClient

type InteropClient interface {
	HandleJoinRequest(context.Context, types.NetID, *ttnpb.JoinRequest) (*ttnpb.JoinResponse, error)
}

InteropClient is a client, which Network Server can use for interoperability.

type MACHandler

type MACHandler func(ctx context.Context, dev *ttnpb.EndDevice, pld []byte, up *ttnpb.UplinkMessage) error

MACHandler defines the behavior of a MAC command on a device.

type MACSettingConfig

type MACSettingConfig struct {
	ADRMargin                  *float32                   `` /* 135-byte string literal not displayed */
	DesiredRx1Delay            *ttnpb.RxDelay             `` /* 130-byte string literal not displayed */
	DesiredMaxDutyCycle        *ttnpb.AggregatedDutyCycle `` /* 139-byte string literal not displayed */
	DesiredADRAckLimitExponent *ttnpb.ADRAckLimitExponent `` /* 148-byte string literal not displayed */
	DesiredADRAckDelayExponent *ttnpb.ADRAckDelayExponent `` /* 148-byte string literal not displayed */
	ClassBTimeout              *time.Duration             `` /* 164-byte string literal not displayed */
	ClassCTimeout              *time.Duration             `` /* 164-byte string literal not displayed */
	StatusTimePeriodicity      *time.Duration             `` /* 170-byte string literal not displayed */
	StatusCountPeriodicity     *uint32                    `` /* 184-byte string literal not displayed */
}

MACSettingConfig defines MAC-layer configuration.

type NetworkServer

type NetworkServer struct {
	*component.Component
	// contains filtered or unexported fields
}

NetworkServer implements the Network Server component.

The Network Server exposes the GsNs, AsNs, DeviceRegistry and ApplicationDownlinkQueue services.

func New

func New(c *component.Component, conf *Config, opts ...Option) (*NetworkServer, error)

New returns new NetworkServer.

func (*NetworkServer) Context

func (ns *NetworkServer) Context() context.Context

Context returns the context of the Network Server.

func (*NetworkServer) Delete

Delete implements NsEndDeviceRegistryServer.

func (*NetworkServer) DownlinkQueueList

DownlinkQueueList is called by the Application Server to get the current state of the downlink queue for a device.

func (*NetworkServer) DownlinkQueuePush

func (ns *NetworkServer) DownlinkQueuePush(ctx context.Context, req *ttnpb.DownlinkQueueRequest) (*pbtypes.Empty, error)

DownlinkQueuePush is called by the Application Server to push a downlink to queue for a device.

func (*NetworkServer) DownlinkQueueReplace

func (ns *NetworkServer) DownlinkQueueReplace(ctx context.Context, req *ttnpb.DownlinkQueueRequest) (*pbtypes.Empty, error)

DownlinkQueueReplace is called by the Application Server to completely replace the downlink queue for a device.

func (*NetworkServer) GenerateDevAddr

func (ns *NetworkServer) GenerateDevAddr(ctx context.Context, req *types.Empty) (*ttnpb.GenerateDevAddrResponse, error)

GenerateDevAddr returns a device address assignment in the device address range of the network server.

func (*NetworkServer) Get

Get implements NsEndDeviceRegistryServer.

func (ns *NetworkServer) HandleUplink(ctx context.Context, up *ttnpb.UplinkMessage) (*pbtypes.Empty, error)

HandleUplink is called by the Gateway Server when an uplink message arrives.

func (*NetworkServer) LinkApplication

func (ns *NetworkServer) LinkApplication(link ttnpb.AsNs_LinkApplicationServer) error

LinkApplication is called by the Application Server to subscribe to application events.

func (*NetworkServer) RegisterHandlers

func (ns *NetworkServer) RegisterHandlers(s *runtime.ServeMux, conn *grpc.ClientConn)

RegisterHandlers registers gRPC handlers.

func (*NetworkServer) RegisterServices

func (ns *NetworkServer) RegisterServices(s *grpc.Server)

RegisterServices registers services provided by ns at s.

func (*NetworkServer) Roles

func (ns *NetworkServer) Roles() []ttnpb.ClusterRole

Roles returns the roles that the Network Server fulfills.

func (*NetworkServer) Set

func (ns *NetworkServer) Set(ctx context.Context, req *ttnpb.SetEndDeviceRequest) (dev *ttnpb.EndDevice, err error)

Set implements NsEndDeviceRegistryServer.

type Option

type Option func(ns *NetworkServer)

Option configures the NetworkServer.

type UplinkDeduplicator

type UplinkDeduplicator interface {
	// DeduplicateUplink deduplicates an uplink message for specified time.Duration.
	// DeduplicateUplink returns true if the uplink is not a duplicate or false and error, if any, otherwise.
	DeduplicateUplink(context.Context, *ttnpb.UplinkMessage, time.Duration) (bool, error)
	// AccumulatedMetadata returns accumulated metadata for specified uplink message and error, if any.
	AccumulatedMetadata(context.Context, *ttnpb.UplinkMessage) ([]*ttnpb.RxMetadata, error)
}

UplinkDeduplicator represents an entity, that deduplicates uplinks and accumulates metadata.

Directories

Path Synopsis
Package redis provides Redis implementations of interfaces used by networkserver.
Package redis provides Redis implementations of interfaces used by networkserver.

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