xgress

package
v0.30.4 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 30, 2023 License: Apache-2.0 Imports: 34 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	MinHeaderKey = 2000
	MaxHeaderKey = MinHeaderKey + int32(math.MaxUint8)

	HeaderKeyCircuitId      = 2256
	HeaderKeySequence       = 2257
	HeaderKeyFlags          = 2258
	HeaderKeyRecvBufferSize = 2259
	HeaderKeyRTT            = 2260

	ContentTypePayloadType         = 1100
	ContentTypeAcknowledgementType = 1101
	ContentTypeControlType         = 1102
)
View Source 
const (
	ControlHopCount  = 20
	ControlHopType   = 21
	ControlHopId     = 22
	ControlTimestamp = 23
	ControlUserVal   = 24
	ControlError     = 25
)
View Source 
const DECODER = "data"
View Source 
const (
	HeaderKeyUUID = 0
)

Variables

View Source 
var ContentTypeValue = map[string]int32{
	"PayloadType":         ContentTypePayloadType,
	"AcknowledgementType": ContentTypeAcknowledgementType,
	"ControlType":         ContentTypeControlType,
}

Functions

func DecodePayload 

func DecodePayload(payload *Payload) ([]byte, bool)

func GlobalRegistry 

func GlobalRegistry() *registry

func InitAcker 

func InitAcker(forwarder PayloadBufferForwarder, metrics metrics.Registry, closeNotify <-chan struct{})

func InitMetrics 

func InitMetrics(registry metrics.UsageRegistry)

func InitPayloadIngester 

func InitPayloadIngester(closeNotify <-chan struct{})

func InitRetransmitter 

func InitRetransmitter(forwarder PayloadBufferForwarder, faultReporter RetransmitterFaultReporter, metrics metrics.Registry, closeNotify <-chan struct{})

func NewRegistry 

func NewRegistry() *registry

func ReadUntil 

func ReadUntil(peer transport.Conn, stop byte) ([]byte, error)

func ReadUntilNewline 

func ReadUntilNewline(peer transport.Conn) ([]byte, error)

func RemoveTerminator 

func RemoveTerminator(ctrls networkControllers, terminatorId string) error

func RemoveTerminators 

func RemoveTerminators(ctrls networkControllers, terminatorIds []string)

func RespondToTraceRequest 

func RespondToTraceRequest(headers channel.Headers, hopType, hopId string, response ControlReceiver)

func SendRequest 

func SendRequest(request *Request, peer io.Writer) error

func SendResponse 

func SendResponse(response *Response, peer io.Writer) error

func SetOriginatorFlag 

func SetOriginatorFlag(flags uint32, originator Originator) uint32

Types

type Acker 

type Acker struct {
	// contains filtered or unexported fields
}

Note: if altering this struct, be sure to account for 64 bit alignment on 32 bit arm arch https://pkg.go.dev/sync/atomic#pkg-note-BUG https://github.com/golang/go/issues/36606

func NewAcker 

func NewAcker(forwarder PayloadBufferForwarder, metrics metrics.Registry, closeNotify <-chan struct{}) *Acker

type Acknowledgement 

type Acknowledgement struct {
	Header
	Sequence []int32
}

func NewAcknowledgement 

func NewAcknowledgement(circuitId string, originator Originator) *Acknowledgement

func UnmarshallAcknowledgement 

func UnmarshallAcknowledgement(msg *channel.Message) (*Acknowledgement, error)

func (*Acknowledgement) GetLoggerFields 

func (ack *Acknowledgement) GetLoggerFields() logrus.Fields

func (*Acknowledgement) GetSequence 

func (ack *Acknowledgement) GetSequence() []int32

func (*Acknowledgement) Marshall 

func (ack *Acknowledgement) Marshall() *channel.Message

type Address 

type Address string

type BindHandler 

type BindHandler interface {
	HandleXgressBind(x *Xgress)
}

The BindHandlers are invoked to install the appropriate handlers.

type CircuitInfo 

type CircuitInfo struct {
	CtrlId      string
	CircuitId   *identity.TokenId
	Address     Address
	ResponseMsg *channel.Message
}

func GetCircuit 

func GetCircuit(ctrl networkControllers, ingressId string, service string, timeout time.Duration, peerData map[uint32][]byte) (*CircuitInfo, error)

type CloseHandler 

type CloseHandler interface {
	// HandleXgressClose is invoked when the connected peer terminates the communication.
	//
	HandleXgressClose(x *Xgress)
}

CloseHandler is invoked by an xgress when the connected peer terminates the communication.

type CloseHandlerF 

type CloseHandlerF func(x *Xgress)

CloseHandlerF is the function version of CloseHandler

func (CloseHandlerF) HandleXgressClose 

func (self CloseHandlerF) HandleXgressClose(x *Xgress)

type CloseHelper 

type CloseHelper struct {
	// contains filtered or unexported fields
}

func (*CloseHelper) Close 

func (self *CloseHelper) Close() error

func (*CloseHelper) Init 

func (self *CloseHelper) Init(closer io.Closer)

type Connection 

type Connection interface {
	io.Closer
	LogContext() string
	ReadPayload() ([]byte, map[uint8][]byte, error)
	WritePayload([]byte, map[uint8][]byte) (int, error)
	HandleControlMsg(controlType ControlType, headers channel.Headers, responder ControlReceiver) error
}

type Control 

type Control struct {
	Type      ControlType
	CircuitId string
	Headers   channel.Headers
}

func UnmarshallControl 

func UnmarshallControl(msg *channel.Message) (*Control, error)

func (*Control) CreateTraceResponse 

func (self *Control) CreateTraceResponse(hopType, hopId string) *Control

func (*Control) DecrementAndGetHop 

func (self *Control) DecrementAndGetHop() uint32

func (*Control) GetLoggerFields 

func (self *Control) GetLoggerFields() logrus.Fields

func (*Control) IsTypeTraceRoute 

func (self *Control) IsTypeTraceRoute() bool

func (*Control) IsTypeTraceRouteResponse 

func (self *Control) IsTypeTraceRouteResponse() bool

func (*Control) Marshall 

func (self *Control) Marshall() *channel.Message

type ControlReceiver 

type ControlReceiver interface {
	HandleControlReceive(controlType ControlType, headers channel.Headers)
}

type ControlType 

type ControlType byte
const (
	ControlTypeTraceRoute         ControlType = 1
	ControlTypeTraceRouteResponse ControlType = 2
)

func (ControlType) String 

func (self ControlType) String() string

type Decoder 

type Decoder struct{}

func (Decoder) Decode 

func (d Decoder) Decode(msg *channel.Message) ([]byte, bool)

type DialParams 

type DialParams interface {
	GetCtrlId() string
	GetDestination() string
	GetCircuitId() *identity.TokenId
	GetAddress() Address
	GetBindHandler() BindHandler
	GetLogContext() logcontext.Context
	GetDeadline() time.Time
	GetCircuitTags() map[string]string
}

type Dialer 

type Dialer interface {
	Dial(params DialParams) (xt.PeerData, error)
	IsTerminatorValid(id string, destination string) bool
}

type Factory 

type Factory interface {
	CreateListener(optionsData OptionsData) (Listener, error)
	CreateDialer(optionsData OptionsData) (Dialer, error)
}
type Header struct {
	CircuitId      string
	Flags          uint32
	RecvBufferSize uint32
	RTT            uint16
}

func (*Header) GetCircuitId 

func (header *Header) GetCircuitId() string

func (*Header) GetFlags 

func (header *Header) GetFlags() string

func (*Header) GetOriginator 

func (header *Header) GetOriginator() Originator

type InvalidTerminatorError 

type InvalidTerminatorError struct {
	InnerError error
}

func (InvalidTerminatorError) Error 

func (e InvalidTerminatorError) Error() string

func (InvalidTerminatorError) Unwrap 

func (e InvalidTerminatorError) Unwrap() error

type LinkReceiveBuffer 

type LinkReceiveBuffer struct {
	// contains filtered or unexported fields
}

func NewLinkReceiveBuffer 

func NewLinkReceiveBuffer() *LinkReceiveBuffer

func (*LinkReceiveBuffer) Inspect 

func (buffer *LinkReceiveBuffer) Inspect() *inspect.XgressRecvBufferDetail

func (*LinkReceiveBuffer) PeekHead 

func (buffer *LinkReceiveBuffer) PeekHead() *Payload

func (*LinkReceiveBuffer) ReceiveUnordered 

func (buffer *LinkReceiveBuffer) ReceiveUnordered(payload *Payload, maxSize uint32) bool

func (*LinkReceiveBuffer) Remove 

func (buffer *LinkReceiveBuffer) Remove(payload *Payload)

func (*LinkReceiveBuffer) Size 

func (buffer *LinkReceiveBuffer) Size() uint32

type LinkSendBuffer 

type LinkSendBuffer struct {
	// contains filtered or unexported fields
}

Note: if altering this struct, be sure to account for 64 bit alignment on 32 bit arm arch https://pkg.go.dev/sync/atomic#pkg-note-BUG https://github.com/golang/go/issues/36606

func NewLinkSendBuffer 

func NewLinkSendBuffer(x *Xgress) *LinkSendBuffer

func (*LinkSendBuffer) BufferPayload 

func (buffer *LinkSendBuffer) BufferPayload(payload *Payload) (func(), error)

func (*LinkSendBuffer) Close 

func (buffer *LinkSendBuffer) Close()

func (*LinkSendBuffer) CloseWhenEmpty 

func (buffer *LinkSendBuffer) CloseWhenEmpty() bool

func (*LinkSendBuffer) Inspect 

func (buffer *LinkSendBuffer) Inspect() *inspect.XgressSendBufferDetail

func (*LinkSendBuffer) ReceiveAcknowledgement 

func (buffer *LinkSendBuffer) ReceiveAcknowledgement(ack *Acknowledgement)

type Listener 

type Listener interface {
	Listen(address string, bindHandler BindHandler) error
	Close() error
}

type MisconfiguredTerminatorError 

type MisconfiguredTerminatorError struct {
	InnerError error
}

func (MisconfiguredTerminatorError) Error 

func (e MisconfiguredTerminatorError) Error() string

func (MisconfiguredTerminatorError) Unwrap 

func (e MisconfiguredTerminatorError) Unwrap() error

type Options 

type Options struct {
	Mtu         int32
	RandomDrops bool
	Drop1InN    int32
	TxQueueSize int32

	TxPortalStartSize      uint32
	TxPortalMaxSize        uint32
	TxPortalMinSize        uint32
	TxPortalIncreaseThresh uint32
	TxPortalIncreaseScale  float64
	TxPortalRetxThresh     uint32
	TxPortalRetxScale      float64
	TxPortalDupAckThresh   uint32
	TxPortalDupAckScale    float64

	RxBufferSize uint32
	RetxStartMs  uint32
	RetxScale    float64
	RetxAddMs    uint32

	MaxCloseWait        time.Duration
	GetCircuitTimeout   time.Duration
	CircuitStartTimeout time.Duration
	ConnectTimeout      time.Duration
}

Options contains common Xgress configuration options

func DefaultOptions 

func DefaultOptions() *Options

func LoadOptions 

func LoadOptions(data OptionsData) (*Options, error)

func (Options) String 

func (options Options) String() string

type OptionsData 

type OptionsData map[interface{}]interface{}

type Originator 

type Originator int32
const (
	Initiator  Originator = 0
	Terminator Originator = 1
)

func (Originator) String 

func (o Originator) String() string

type Payload 

type Payload struct {
	Header
	Sequence int32
	Headers  map[uint8][]byte
	Data     []byte
}

func UnmarshallPayload 

func UnmarshallPayload(msg *channel.Message) (*Payload, error)

func (*Payload) GetLoggerFields 

func (payload *Payload) GetLoggerFields() logrus.Fields

func (*Payload) GetSequence 

func (payload *Payload) GetSequence() int32

func (*Payload) IsCircuitEndFlagSet 

func (payload *Payload) IsCircuitEndFlagSet() bool

func (*Payload) IsCircuitStartFlagSet 

func (payload *Payload) IsCircuitStartFlagSet() bool

func (*Payload) Marshall 

func (payload *Payload) Marshall() *channel.Message

type PayloadBufferForwarder 

type PayloadBufferForwarder interface {
	ForwardPayload(srcAddr Address, payload *Payload) error
	RetransmitPayload(srcAddr Address, payload *Payload) error
	ForwardAcknowledgement(srcAddr Address, acknowledgement *Acknowledgement) error
}

type PayloadFlag 

type PayloadFlag uint32
const (
	PayloadFlagCircuitEnd   PayloadFlag = 1
	PayloadFlagOriginator   PayloadFlag = 2
	PayloadFlagCircuitStart PayloadFlag = 4
)

type PayloadIngester 

type PayloadIngester struct {
	// contains filtered or unexported fields
}

func NewPayloadIngester 

func NewPayloadIngester(closeNotify <-chan struct{}) *PayloadIngester

type PeekHandler 

type PeekHandler interface {
	Rx(x *Xgress, payload *Payload)
	Tx(x *Xgress, payload *Payload)
	Close(x *Xgress)
}

PeekHandler allows registering watcher to react to data flowing an xgress instance

type ReceiveHandler 

type ReceiveHandler interface {
	// HandleXgressReceive is invoked when data is received from the connected xgress peer.
	//
	HandleXgressReceive(payload *Payload, x *Xgress)
	HandleControlReceive(control *Control, x *Xgress)
}

ReceiveHandler is invoked by an xgress whenever data is received from the connected peer. Generally a ReceiveHandler is implemented to connect the xgress to a data plane data transmission system.

type Request 

type Request struct {
	Id        string `json:"id"`
	ServiceId string `json:"svcId"`
}

func ReceiveRequest 

func ReceiveRequest(peer transport.Conn) (*Request, error)

func RequestFromJSON 

func RequestFromJSON(payload []byte) (*Request, error)

func (*Request) ToJSON 

func (r *Request) ToJSON() ([]byte, error)

type Response 

type Response struct {
	Success   bool   `json:"scc"`
	Message   string `json:"msg"`
	CircuitId string `json:"circuitId"`
}

func CreateCircuit 

func CreateCircuit(ctrl networkControllers, peer Connection, request *Request, bindHandler BindHandler, options *Options) *Response

func ReceiveResponse 

func ReceiveResponse(peer transport.Conn) (*Response, error)

func ResponseFromJSON 

func ResponseFromJSON(payload []byte) (*Response, error)

func (*Response) ToJSON 

func (r *Response) ToJSON() ([]byte, error)

type Retransmitter 

type Retransmitter struct {
	// contains filtered or unexported fields
}

func NewRetransmitter 

func NewRetransmitter(forwarder PayloadBufferForwarder, faultReporter RetransmitterFaultReporter, metrics metrics.Registry, closeNotify <-chan struct{}) *Retransmitter

type RetransmitterFaultReporter 

type RetransmitterFaultReporter interface {
	ReportForwardingFault(circuitId string, ctrlId string)
}

type Xgress 

type Xgress struct {
	Options *Options
	// contains filtered or unexported fields
}

func NewXgress 

func NewXgress(circuitId string, ctrlId string, address Address, peer Connection, originator Originator, options *Options, tags map[string]string) *Xgress

func (*Xgress) AddCloseHandler 

func (self *Xgress) AddCloseHandler(closeHandler CloseHandler)

func (*Xgress) AddPeekHandler 

func (self *Xgress) AddPeekHandler(peekHandler PeekHandler)

func (*Xgress) Address 

func (self *Xgress) Address() Address

func (*Xgress) CircuitId 

func (self *Xgress) CircuitId() string

func (*Xgress) Close 

func (self *Xgress) Close()

Things which can trigger close

1. Read fails 2. Write fails 3. End of Circuit received 4. Unroute received

func (*Xgress) CloseTimeout 

func (self *Xgress) CloseTimeout(duration time.Duration)

func (*Xgress) Closed 

func (self *Xgress) Closed() bool

func (*Xgress) CtrlId 

func (self *Xgress) CtrlId() string

func (*Xgress) ForwardEndOfCircuit 

func (self *Xgress) ForwardEndOfCircuit(sendF func(payload *Payload) bool)

func (*Xgress) GetEndCircuit 

func (self *Xgress) GetEndCircuit() *Payload

func (*Xgress) GetIntervalId 

func (self *Xgress) GetIntervalId() string

func (*Xgress) GetSequence 

func (self *Xgress) GetSequence() int32

func (*Xgress) GetStartCircuit 

func (self *Xgress) GetStartCircuit() *Payload

func (*Xgress) GetTags 

func (self *Xgress) GetTags() map[string]string
func (self *Xgress) GetTimeOfLastRxFromLink() int64

func (*Xgress) HandleControlReceive 

func (self *Xgress) HandleControlReceive(controlType ControlType, headers channel.Headers)

func (*Xgress) InspectCircuit 

func (self *Xgress) InspectCircuit(detail *inspect.CircuitInspectDetail)

func (*Xgress) IsCircuitStarted 

func (self *Xgress) IsCircuitStarted() bool

func (*Xgress) IsEndOfCircuitReceived 

func (self *Xgress) IsEndOfCircuitReceived() bool

func (*Xgress) IsEndOfCircuitSent 

func (self *Xgress) IsEndOfCircuitSent() bool

func (*Xgress) IsTerminator 

func (self *Xgress) IsTerminator() bool

func (*Xgress) Label 

func (self *Xgress) Label() string

func (*Xgress) Originator 

func (self *Xgress) Originator() Originator

func (*Xgress) PayloadReceived 

func (self *Xgress) PayloadReceived(payload *Payload)

func (*Xgress) SendAcknowledgement 

func (self *Xgress) SendAcknowledgement(acknowledgement *Acknowledgement) error

func (*Xgress) SendControl 

func (self *Xgress) SendControl(control *Control) error

func (*Xgress) SendEmptyAck 

func (self *Xgress) SendEmptyAck()

func (*Xgress) SendPayload 

func (self *Xgress) SendPayload(payload *Payload) error

func (*Xgress) SetReceiveHandler 

func (self *Xgress) SetReceiveHandler(receiveHandler ReceiveHandler)

func (*Xgress) Start 

func (self *Xgress) Start()

func (*Xgress) Unrouted 

func (self *Xgress) Unrouted()

Source Files

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