networkserver

package
v3.15.2 Latest Latest
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 Go to latest Published: Oct 22, 2021 License: Apache-2.0 Imports: 41 Imported by: 0

Documentation

Overview

Package networkserver provides a LoRaWAN-compliant Network Server implementation.

Index

Constants

This section is empty.

Variables

View Source 
var DefaultConfig = Config{
	ApplicationUplinkQueue: ApplicationUplinkQueueConfig{
		BufferSize:   1000,
		NumConsumers: 1,
	},
	DownlinkTaskQueue: DownlinkTaskQueueConfig{
		NumConsumers: 1,
	},
	DeduplicationWindow: 200 * time.Millisecond,
	CooldownWindow:      time.Second,
	DownlinkPriorities: DownlinkPriorityConfig{
		JoinAccept:             "highest",
		MACCommands:            "highest",
		MaxApplicationDownlink: "high",
	},
	DefaultMACSettings: MACSettingConfig{
		ADRMargin:              func(v float32) *float32 { return &v }(mac.DefaultADRMargin),
		DesiredRx1Delay:        func(v ttnpb.RxDelay) *ttnpb.RxDelay { return &v }(ttnpb.RX_DELAY_5),
		ClassBTimeout:          func(v time.Duration) *time.Duration { return &v }(mac.DefaultClassBTimeout),
		ClassCTimeout:          func(v time.Duration) *time.Duration { return &v }(mac.DefaultClassCTimeout),
		StatusTimePeriodicity:  func(v time.Duration) *time.Duration { return &v }(mac.DefaultStatusTimePeriodicity),
		StatusCountPeriodicity: func(v uint32) *uint32 { return &v }(mac.DefaultStatusCountPeriodicity),
	},
	DownlinkQueueCapacity: 10000,
}

DefaultConfig is the default Network Server configuration.

View Source 
var (
	DefaultOptions []Option
)

Functions

func CreateDevice added in v3.9.1 

func CreateDevice(ctx context.Context, r DeviceRegistry, dev *ttnpb.EndDevice, paths ...string) (*ttnpb.EndDevice, context.Context, error)

CreateDevice creates device dev in r.

func DeleteDevice added in v3.9.1 

func DeleteDevice(ctx context.Context, r DeviceRegistry, appID ttnpb.ApplicationIdentifiers, devID string) error

DeleteDevice deletes device identified by appID, devID from r.

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

	// PopApplication calls f on the most recent application uplink 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.Done() value on best-effort basis.
	Pop(ctx context.Context, consumerID string, f func(context.Context, ttnpb.ApplicationIdentifiers, ApplicationUplinkQueueDrainFunc) (time.Time, error)) error
}

type ApplicationUplinkQueueConfig added in v3.8.7 

type ApplicationUplinkQueueConfig struct {
	Queue        ApplicationUplinkQueue `name:"-"`
	BufferSize   uint64                 `name:"buffer-size"`
	NumConsumers uint64                 `name:"num-consumers"`
}

ApplicationUplinkQueueConfig defines application uplink queue configuration.

type ApplicationUplinkQueueDrainFunc added in v3.11.2 

type ApplicationUplinkQueueDrainFunc func(limit int, f func(...*ttnpb.ApplicationUp) error) error

type Config 

type Config struct {
	ApplicationUplinkQueue   ApplicationUplinkQueueConfig `name:"application-uplink-queue"`
	Devices                  DeviceRegistry               `name:"-"`
	DownlinkTaskQueue        DownlinkTaskQueueConfig      `name:"downlink-task-queue"`
	UplinkDeduplicator       UplinkDeduplicator           `name:"-"`
	ScheduledDownlinkMatcher ScheduledDownlinkMatcher     `name:"-"`
	NetID                    types.NetID                  `name:"net-id" description:"NetID of this Network Server"`
	ClusterID                string                       `name:"cluster-id" description:"Cluster ID 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"`
	DownlinkQueueCapacity    int                          `name:"downlink-queue-capacity" description:"Maximum downlink queue size per-session"`
}

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)
	RangeByUplinkMatches(ctx context.Context, up *ttnpb.UplinkMessage, cacheTTL time.Duration, f func(context.Context, *UplinkMatch) (bool, error)) 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 

func (c DownlinkPriorityConfig) Parse() (DownlinkPriorities, error)

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.Done() value on best-effort basis.
	// consumerID should be a unique ID for this consumer.
	Pop(ctx context.Context, consumerID string, f func(context.Context, ttnpb.EndDeviceIdentifiers, time.Time) (time.Time, error)) error
}

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

type DownlinkTaskQueueConfig added in v3.14.2 

type DownlinkTaskQueueConfig struct {
	Queue        DownlinkTaskQueue `name:"-"`
	NumConsumers uint64            `name:"num-consumers"`
}

ApplicationUplinkQueueConfig defines downlink task queue configuration.

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 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.

func (MACSettingConfig) Parse 

func (c MACSettingConfig) Parse() ttnpb.MACSettings

Parse parses the configuration and returns ttnpb.MACSettings.

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 

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

Delete implements NsEndDeviceRegistryServer.

func (*NetworkServer) DownlinkQueueList 

func (ns *NetworkServer) DownlinkQueueList(ctx context.Context, ids *ttnpb.EndDeviceIdentifiers) (*ttnpb.ApplicationDownlinks, error)

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 *pbtypes.Empty) (*ttnpb.GenerateDevAddrResponse, error)

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

func (*NetworkServer) Get 

func (ns *NetworkServer) Get(ctx context.Context, req *ttnpb.GetEndDeviceRequest) (*ttnpb.EndDevice, error)

Get implements NsEndDeviceRegistryServer.

func (*NetworkServer) GetDefaultMACSettings added in v3.14.0 

func (ns *NetworkServer) GetDefaultMACSettings(ctx context.Context, req *ttnpb.GetDefaultMACSettingsRequest) (*ttnpb.MACSettings, error)
func (ns *NetworkServer) HandleUplink(ctx context.Context, up *ttnpb.UplinkMessage) (_ *pbtypes.Empty, err error)

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

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) ReportTxAcknowledgment added in v3.12.0 

func (ns *NetworkServer) ReportTxAcknowledgment(ctx context.Context, up *ttnpb.GatewayTxAcknowledgment) (_ *pbtypes.Empty, err error)

ReportTxAcknowledgment is called by the Gateway Server when a tx acknowledgment arrives.

func (*NetworkServer) ResetFactoryDefaults added in v3.11.0 

func (ns *NetworkServer) ResetFactoryDefaults(ctx context.Context, req *ttnpb.ResetAndGetEndDeviceRequest) (*ttnpb.EndDevice, error)

ResetFactoryDefaults implements NsEndDeviceRegistryServer.

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) (*ttnpb.EndDevice, error)

Set implements NsEndDeviceRegistryServer.

type Option 

type Option func(ns *NetworkServer)

Option configures the NetworkServer.

type ScheduledDownlinkMatcher added in v3.13.3 

type ScheduledDownlinkMatcher interface {
	// Add stores metadata for a scheduled downlink message. Implementations may use the downlink
	// message correlation IDs to uniquely identify the scheduled downlink message.
	Add(ctx context.Context, down *ttnpb.DownlinkMessage) error
	// Match matches metadata of a scheduled downlink message from a TxAcknowledgement that was received by a gateway.
	// In case of a successful match, the scheduled downlink message is returned. If no downlink is matched, then an
	// error is returned instead. Implementations are free to return an error even when a match should have been
	// successful, for example if a long time has passed since the downlink was scheduled.
	Match(ctx context.Context, ack *ttnpb.TxAcknowledgment) (*ttnpb.DownlinkMessage, error)
}

ScheduledDownlinkMatcher matches scheduled downlinks with the TxAcknowledgement received by a gateway.

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.

type UplinkMatch added in v3.10.0 

type UplinkMatch struct {
	ApplicationIdentifiers ttnpb.ApplicationIdentifiers
	DeviceID               string
	LoRaWANVersion         ttnpb.MACVersion
	FNwkSIntKey            *ttnpb.KeyEnvelope
	LastFCnt               uint32
	ResetsFCnt             *ttnpb.BoolValue
	Supports32BitFCnt      *ttnpb.BoolValue
	IsPending              bool
}

Source Files

View all Source files

Directories

Path Synopsis
Internal package contains various Network Server utilities
 Internal package contains various Network Server utilities
test
Package test contains testing utilities usable by all subpackages of networkserver including itself.
 Package test contains testing utilities usable by all subpackages of networkserver including itself.
test/shared
Package test contains testing utilities usable by all subpackages of networkserver excluding itself.
 Package test contains testing utilities usable by all subpackages of networkserver excluding itself.
time
Package time wraps "time" and allows for custom implementations of key functions.
 Package time wraps "time" and allows for custom implementations of key functions.
Package redis provides Redis implementations of interfaces used by networkserver.
 Package redis provides Redis implementations of interfaces used by networkserver.

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