srpc

package
v0.16.0 Latest Latest
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 Go to latest Published: Dec 14, 2022 License: MIT Imports: 23 Imported by: 18

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	// ErrUnimplemented is returned if the RPC method was not implemented.
	ErrUnimplemented = errors.New("unimplemented")
	// ErrCompleted is returned if a message is received after the rpc was completed.
	ErrCompleted = errors.New("unexpected packet after rpc was completed")
	// ErrUnrecognizedPacket is returned if the packet type was not recognized.
	ErrUnrecognizedPacket = errors.New("unrecognized packet type")
	// ErrEmptyPacket is returned if nothing is specified in a packet.
	ErrEmptyPacket = errors.New("invalid empty packet")
	// ErrInvalidMessage indicates the message failed to parse.
	ErrInvalidMessage = errors.New("invalid message")
	// ErrEmptyMethodID is returned if the method id was empty.
	ErrEmptyMethodID = errors.New("method id empty")
	// ErrEmptyServiceID is returned if the service id was empty.
	ErrEmptyServiceID = errors.New("service id empty")
)
View Source 
var (
	ErrInvalidLength        = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflow          = fmt.Errorf("proto: integer overflow")
	ErrUnexpectedEndOfGroup = fmt.Errorf("proto: unexpected end of group")
)
View Source 
var File_github_com_aperturerobotics_starpc_srpc_rpcproto_proto protoreflect.FileDescriptor

Functions

func AcceptMuxedListener added in v0.8.3 

func AcceptMuxedListener(ctx context.Context, lis net.Listener, srv *Server, yamuxConf *yamux.Config) error

AcceptMuxedListener accepts incoming connections from a net.Listener.

Uses the default yamux muxer. If yamux conf is nil, uses the defaults.

func CheckStripPrefix added in v0.12.0 

func CheckStripPrefix(id string, matchPrefixes []string) (strippedID string, matchedPrefix string)

CheckStripPrefix checks if the string has any of the given prefixes and strips the matched prefix if any.

if len(matchPrefixes) == 0 returns the ID without changing it.

func NewMuxedConn added in v0.8.2 

func NewMuxedConn(conn net.Conn, outbound bool, yamuxConf *yamux.Config) (network.MuxedConn, error)

NewMuxedConn constructs a new MuxedConn from a net.Conn.

If yamuxConf is nil, uses defaults.

func NewMuxedConnWithRwc added in v0.10.8 

func NewMuxedConnWithRwc(
	ctx context.Context,
	rwc io.ReadWriteCloser,
	outbound bool,
	yamuxConf *yamux.Config,
) (network.MuxedConn, error)

NewMuxedConnWithRwc builds a new MuxedConn with a io.ReadWriteCloser.

If yamuxConf is nil, uses defaults.

func NewPipeStream 

func NewPipeStream(ctx context.Context) (Stream, Stream)

NewPipeStream constructs a new in-memory stream.

func NewWebSocketConn 

func NewWebSocketConn(
	ctx context.Context,
	conn *websocket.Conn,
	isServer bool,
	yamuxConf *yamux.Config,
) (network.MuxedConn, error)

NewWebSocketConn wraps a websocket into a MuxedConn. if yamuxConf is unset, uses the defaults.

func NewYamuxConfig added in v0.13.0 

func NewYamuxConfig() *yamux.Config

NewYamuxConfig builds the default yamux configuration.

Types

type CallData 

type CallData struct {

	// Data contains the packet in the sequence.
	Data []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
	// DataIsZero indicates Data is set with an empty message.
	DataIsZero bool `protobuf:"varint,2,opt,name=data_is_zero,json=dataIsZero,proto3" json:"data_is_zero,omitempty"`
	// Complete indicates the RPC call is completed.
	Complete bool `protobuf:"varint,3,opt,name=complete,proto3" json:"complete,omitempty"`
	// Error contains any error that caused the RPC to fail.
	// If set, implies complete=true.
	Error string `protobuf:"bytes,4,opt,name=error,proto3" json:"error,omitempty"`
	// contains filtered or unexported fields
}

CallData contains a message in a streaming RPC sequence.

func (*CallData) CloneGenericVT added in v0.12.3 

func (m *CallData) CloneGenericVT() proto.Message

func (*CallData) CloneVT added in v0.12.3 

func (m *CallData) CloneVT() *CallData

func (*CallData) Descriptor deprecated 

func (*CallData) Descriptor() ([]byte, []int)

Deprecated: Use CallData.ProtoReflect.Descriptor instead.

func (*CallData) EqualVT 

func (this *CallData) EqualVT(that *CallData) bool

func (*CallData) GetComplete 

func (x *CallData) GetComplete() bool

func (*CallData) GetData 

func (x *CallData) GetData() []byte

func (*CallData) GetDataIsZero added in v0.1.8 

func (x *CallData) GetDataIsZero() bool

func (*CallData) GetError 

func (x *CallData) GetError() string

func (*CallData) MarshalToSizedBufferVT 

func (m *CallData) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*CallData) MarshalToVT 

func (m *CallData) MarshalToVT(dAtA []byte) (int, error)

func (*CallData) MarshalVT 

func (m *CallData) MarshalVT() (dAtA []byte, err error)

func (*CallData) ProtoMessage 

func (*CallData) ProtoMessage()

func (*CallData) ProtoReflect 

func (x *CallData) ProtoReflect() protoreflect.Message

func (*CallData) Reset 

func (x *CallData) Reset()

func (*CallData) SizeVT 

func (m *CallData) SizeVT() (n int)

func (*CallData) String 

func (x *CallData) String() string

func (*CallData) UnmarshalVT 

func (m *CallData) UnmarshalVT(dAtA []byte) error

func (*CallData) Validate 

func (p *CallData) Validate() error

Validate performs cursory validation of the packet.

type CallStart 

type CallStart struct {

	// RpcService is the service to contact.
	// Must be set.
	RpcService string `protobuf:"bytes,1,opt,name=rpc_service,json=rpcService,proto3" json:"rpc_service,omitempty"`
	// RpcMethod is the RPC method to call.
	// Must be set.
	RpcMethod string `protobuf:"bytes,2,opt,name=rpc_method,json=rpcMethod,proto3" json:"rpc_method,omitempty"`
	// Data contains the request or the first message in the stream.
	// Optional if streaming.
	Data []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
	// DataIsZero indicates Data is set with an empty message.
	DataIsZero bool `protobuf:"varint,4,opt,name=data_is_zero,json=dataIsZero,proto3" json:"data_is_zero,omitempty"`
	// contains filtered or unexported fields
}

CallStart requests starting a new RPC call.

func (*CallStart) CloneGenericVT added in v0.12.3 

func (m *CallStart) CloneGenericVT() proto.Message

func (*CallStart) CloneVT added in v0.12.3 

func (m *CallStart) CloneVT() *CallStart

func (*CallStart) Descriptor deprecated 

func (*CallStart) Descriptor() ([]byte, []int)

Deprecated: Use CallStart.ProtoReflect.Descriptor instead.

func (*CallStart) EqualVT 

func (this *CallStart) EqualVT(that *CallStart) bool

func (*CallStart) GetData 

func (x *CallStart) GetData() []byte

func (*CallStart) GetDataIsZero added in v0.1.8 

func (x *CallStart) GetDataIsZero() bool

func (*CallStart) GetRpcMethod 

func (x *CallStart) GetRpcMethod() string

func (*CallStart) GetRpcService 

func (x *CallStart) GetRpcService() string

func (*CallStart) MarshalToSizedBufferVT 

func (m *CallStart) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*CallStart) MarshalToVT 

func (m *CallStart) MarshalToVT(dAtA []byte) (int, error)

func (*CallStart) MarshalVT 

func (m *CallStart) MarshalVT() (dAtA []byte, err error)

func (*CallStart) ProtoMessage 

func (*CallStart) ProtoMessage()

func (*CallStart) ProtoReflect 

func (x *CallStart) ProtoReflect() protoreflect.Message

func (*CallStart) Reset 

func (x *CallStart) Reset()

func (*CallStart) SizeVT 

func (m *CallStart) SizeVT() (n int)

func (*CallStart) String 

func (x *CallStart) String() string

func (*CallStart) UnmarshalVT 

func (m *CallStart) UnmarshalVT(dAtA []byte) error

func (*CallStart) Validate 

func (p *CallStart) Validate() error

Validate performs cursory validation of the packet.

type Client 

type Client interface {
	// ExecCall executes a request/reply RPC with the remote.
	ExecCall(ctx context.Context, service, method string, in, out Message) error

	// NewStream starts a streaming RPC with the remote & returns the stream.
	// firstMsg is optional.
	NewStream(ctx context.Context, service, method string, firstMsg Message) (Stream, error)
}

Client implements a SRPC client which can initiate RPC streams.

func NewClient 

func NewClient(openStream OpenStreamFunc) Client

NewClient constructs a client with a OpenStreamFunc.

func NewClientWithConn added in v0.8.2 

func NewClientWithConn(conn net.Conn, outbound bool, yamuxConf *yamux.Config) (Client, error)

NewClientWithConn constructs the muxer and the client.

if yamuxConf is nil, uses defaults.

func NewClientWithMuxedConn added in v0.3.6 

func NewClientWithMuxedConn(conn network.MuxedConn) Client

NewClientWithMuxedConn constructs a new client with a MuxedConn.

type ClientRPC 

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

ClientRPC represents the client side of an on-going RPC call message stream.

func NewClientRPC 

func NewClientRPC(ctx context.Context, service, method string) *ClientRPC

NewClientRPC constructs a new ClientRPC session and writes CallStart. the writer will be closed when the ClientRPC completes. service and method must be specified. must call Start after creating the RPC object.

func (*ClientRPC) Close 

func (r *ClientRPC) Close()

Close releases any resources held by the ClientRPC.

func (*ClientRPC) Context 

func (c *ClientRPC) Context() context.Context

Context is canceled when the rpc has finished.

func (*ClientRPC) HandleCallCancel added in v0.15.0 

func (c *ClientRPC) HandleCallCancel() error

HandleCallCancel handles the call cancel packet.

func (*ClientRPC) HandleCallData 

func (c *ClientRPC) HandleCallData(pkt *CallData) error

HandleCallData handles the call data packet.

func (*ClientRPC) HandleCallStart 

func (r *ClientRPC) HandleCallStart(pkt *CallStart) error

HandleCallStart handles the call start packet.

func (*ClientRPC) HandlePacket 

func (r *ClientRPC) HandlePacket(msg *Packet) error

HandlePacket handles an incoming parsed message packet.

func (*ClientRPC) HandlePacketData 

func (r *ClientRPC) HandlePacketData(data []byte) error

HandlePacketData handles an incoming unparsed message packet.

func (*ClientRPC) HandleStreamClose added in v0.8.0 

func (r *ClientRPC) HandleStreamClose(closeErr error)

HandleStreamClose handles the incoming stream closing w/ optional error.

func (*ClientRPC) ReadOne added in v0.8.5 

func (c *ClientRPC) ReadOne() ([]byte, error)

ReadOne reads a single message and returns.

returns io.EOF if the stream ended without a packet.

func (*ClientRPC) Start 

func (r *ClientRPC) Start(writer Writer, writeFirstMsg bool, firstMsg []byte) error

Start sets the writer and writes the MsgSend message. must only be called once!

func (*ClientRPC) Wait added in v0.15.0 

func (c *ClientRPC) Wait(ctx context.Context) error

Wait waits for the RPC to finish.

func (*ClientRPC) WriteCallData added in v0.15.0 

func (c *ClientRPC) WriteCallData(data []byte, complete bool, err error) error

WriteCallData writes a call data packet.

func (*ClientRPC) WriteCancel added in v0.15.3 

func (c *ClientRPC) WriteCancel() error

WriteCancel writes a call cancel packet.

type ClientSet added in v0.12.2 

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

ClientSet wraps a list of clients into one Client.

func NewClientSet added in v0.12.2 

func NewClientSet(clients []Client) *ClientSet

NewClientSet constructs a new client set.

func (*ClientSet) ExecCall added in v0.12.2 

func (c *ClientSet) ExecCall(
	ctx context.Context,
	service, method string,
	in, out Message,
) error

ExecCall executes a request/reply RPC with the remote.

func (*ClientSet) NewStream added in v0.12.2 

func (c *ClientSet) NewStream(
	ctx context.Context,
	service, method string,
	firstMsg Message,
) (Stream, error)

NewStream starts a streaming RPC with the remote & returns the stream. firstMsg is optional.

type CloseHandler added in v0.8.0 

type CloseHandler = func(closeErr error)

CloseHandler handles the stream closing with an optional error.

type HTTPServer 

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

HTTPServer implements the SRPC server.

func NewHTTPServer 

func NewHTTPServer(mux Mux, path string) (*HTTPServer, error)

NewHTTPServer builds a http server / handler. if path is empty, serves on all routes.

func (*HTTPServer) ServeHTTP 

func (s *HTTPServer) ServeHTTP(w http.ResponseWriter, r *http.Request)

type Handler 

type Handler interface {
	// Invoker invokes the methods.
	Invoker

	// GetServiceID returns the ID of the service.
	GetServiceID() string
	// GetMethodIDs returns the list of methods for the service.
	GetMethodIDs() []string
}

Handler describes a SRPC call handler implementation.

type Invoker added in v0.10.7 

type Invoker interface {
	// InvokeMethod invokes the method matching the service & method ID.
	// Returns false, nil if not found.
	// If service string is empty, ignore it.
	InvokeMethod(serviceID, methodID string, strm Stream) (bool, error)
}

Invoker is a function for invoking SRPC service methods.

type InvokerSlice added in v0.15.2 

type InvokerSlice []Invoker

InvokerSlice is a list of invokers.

func (InvokerSlice) InvokeMethod added in v0.15.2 

func (s InvokerSlice) InvokeMethod(serviceID, methodID string, strm Stream) (bool, error)

InvokeMethod invokes the method matching the service & method ID. Returns false, nil if not found. If service string is empty, ignore it.

type Message 

type Message interface {
	MarshalVT() ([]byte, error)
	UnmarshalVT([]byte) error
}

Message is the vtprotobuf message interface.

type MsgStream added in v0.4.0 

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

MsgStream implements the stream interface passed to implementations.

func NewMsgStream added in v0.4.0 

func NewMsgStream(
	ctx context.Context,
	rw MsgStreamRw,
	closeCb func(),
) *MsgStream

NewMsgStream constructs a new Stream with a ClientRPC. dataCh should be closed when no more messages will arrive.

func (*MsgStream) Close added in v0.4.0 

func (r *MsgStream) Close() error

Close closes the stream.

func (*MsgStream) CloseSend added in v0.4.0 

func (r *MsgStream) CloseSend() error

CloseSend signals to the remote that we will no longer send any messages.

func (*MsgStream) Context added in v0.4.0 

func (r *MsgStream) Context() context.Context

Context is canceled when the Stream is no longer valid.

func (*MsgStream) MsgRecv added in v0.4.0 

func (r *MsgStream) MsgRecv(msg Message) error

MsgRecv receives an incoming message from the remote. Parses the message into the object at msg.

func (*MsgStream) MsgSend added in v0.4.0 

func (r *MsgStream) MsgSend(msg Message) error

MsgSend sends the message to the remote.

type MsgStreamRw added in v0.15.0 

type MsgStreamRw interface {
	// ReadOne reads a single message and returns.
	//
	// returns io.EOF if the stream ended.
	ReadOne() ([]byte, error)
	// WriteCallData writes a call data packet.
	WriteCallData(data []byte, complete bool, err error) error
}

MsgStreamRw is the read-write interface for MsgStream.

type Mux 

type Mux interface {
	// Invoker invokes the methods.
	Invoker

	// Register registers a new RPC method handler (service).
	Register(handler Handler) error
	// HasService checks if the service ID exists in the handlers.
	HasService(serviceID string) bool
	// HasServiceMethod checks if <service-id, method-id> exists in the handlers.
	HasServiceMethod(serviceID, methodID string) bool
}

Mux contains a set of <service, method> handlers.

func NewMux 

func NewMux(fallbackInvokers ...Invoker) Mux

NewMux constructs a new Mux.

fallbackInvokers is the list of fallback Invokers to call in the case that the service/method is not found on this mux.

type OpenStreamFunc 

type OpenStreamFunc = func(
	ctx context.Context,
	msgHandler PacketHandler,
	closeHandler CloseHandler,
) (Writer, error)

OpenStreamFunc opens a stream with a remote. msgHandler must not be called concurrently.

func NewOpenStreamWithMuxedConn added in v0.3.6 

func NewOpenStreamWithMuxedConn(conn network.MuxedConn) OpenStreamFunc

NewOpenStreamWithMuxedConn constructs a OpenStream func with a MuxedConn.

func NewServerPipe 

func NewServerPipe(server *Server) OpenStreamFunc

NewServerPipe constructs a open stream func which creates an in-memory Pipe Stream with the given Server. Starts read pumps for both. Starts the HandleStream function on the server in a separate goroutine.

type Packet 

type Packet struct {

	// Body is the packet body.
	//
	// Types that are assignable to Body:
	//
	//	*Packet_CallStart
	//	*Packet_CallData
	//	*Packet_CallCancel
	Body isPacket_Body `protobuf_oneof:"body"`
	// contains filtered or unexported fields
}

Packet is a message sent over a srpc packet connection.

func NewCallCancelPacket added in v0.14.0 

func NewCallCancelPacket() *Packet

NewCallCancelPacket constructs a new CallCancel packet with cancel.

func NewCallDataPacket 

func NewCallDataPacket(data []byte, dataIsZero bool, complete bool, err error) *Packet

NewCallDataPacket constructs a new CallData packet.

func NewCallStartPacket 

func NewCallStartPacket(service, method string, data []byte, dataIsZero bool) *Packet

NewCallStartPacket constructs a new CallStart packet.

func (*Packet) CloneGenericVT added in v0.12.3 

func (m *Packet) CloneGenericVT() proto.Message

func (*Packet) CloneVT added in v0.12.3 

func (m *Packet) CloneVT() *Packet

func (*Packet) Descriptor deprecated 

func (*Packet) Descriptor() ([]byte, []int)

Deprecated: Use Packet.ProtoReflect.Descriptor instead.

func (*Packet) EqualVT 

func (this *Packet) EqualVT(that *Packet) bool

func (*Packet) GetBody 

func (m *Packet) GetBody() isPacket_Body

func (*Packet) GetCallCancel added in v0.14.0 

func (x *Packet) GetCallCancel() bool

func (*Packet) GetCallData 

func (x *Packet) GetCallData() *CallData

func (*Packet) GetCallStart 

func (x *Packet) GetCallStart() *CallStart

func (*Packet) MarshalToSizedBufferVT 

func (m *Packet) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*Packet) MarshalToVT 

func (m *Packet) MarshalToVT(dAtA []byte) (int, error)

func (*Packet) MarshalVT 

func (m *Packet) MarshalVT() (dAtA []byte, err error)

func (*Packet) ProtoMessage 

func (*Packet) ProtoMessage()

func (*Packet) ProtoReflect 

func (x *Packet) ProtoReflect() protoreflect.Message

func (*Packet) Reset 

func (x *Packet) Reset()

func (*Packet) SizeVT 

func (m *Packet) SizeVT() (n int)

func (*Packet) String 

func (x *Packet) String() string

func (*Packet) UnmarshalVT 

func (m *Packet) UnmarshalVT(dAtA []byte) error

func (*Packet) Validate 

func (p *Packet) Validate() error

Validate performs cursory validation of the packet.

type PacketHandler 

type PacketHandler = func(pkt *Packet) error

PacketHandler handles a packet.

pkt is optional (can be nil) if closeErr is set, the stream is closed after pkt.

type PacketReaderWriter 

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

PacketReaderWriter reads and writes packets from a io.ReadWriter. Uses a LittleEndian uint32 length prefix.

func NewPacketReadWriter 

func NewPacketReadWriter(rw io.ReadWriteCloser) *PacketReaderWriter

NewPacketReadWriter constructs a new read/writer.

func (*PacketReaderWriter) Close 

func (r *PacketReaderWriter) Close() error

Close closes the packet rw.

func (*PacketReaderWriter) ReadPump 

func (r *PacketReaderWriter) ReadPump(cb PacketHandler, closed CloseHandler)

ReadPump executes the read pump in a goroutine.

calls the handler when closed or returning an error

func (*PacketReaderWriter) ReadToHandler added in v0.8.0 

func (r *PacketReaderWriter) ReadToHandler(cb PacketHandler) error

ReadToHandler reads data to the given handler. Does not handle closing the stream, use ReadPump instead.

func (*PacketReaderWriter) WritePacket 

func (r *PacketReaderWriter) WritePacket(p *Packet) error

WritePacket writes a packet to the writer.

type Packet_CallCancel added in v0.14.0 

type Packet_CallCancel struct {
	// CallCancel cancels the call.
	CallCancel bool `protobuf:"varint,3,opt,name=call_cancel,json=callCancel,proto3,oneof"`
}

func (*Packet_CallCancel) CloneVT added in v0.14.0 

func (m *Packet_CallCancel) CloneVT() isPacket_Body

func (*Packet_CallCancel) EqualVT added in v0.14.0 

func (this *Packet_CallCancel) EqualVT(thatIface isPacket_Body) bool

func (*Packet_CallCancel) MarshalToSizedBufferVT added in v0.14.0 

func (m *Packet_CallCancel) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*Packet_CallCancel) MarshalToVT added in v0.14.0 

func (m *Packet_CallCancel) MarshalToVT(dAtA []byte) (int, error)

func (*Packet_CallCancel) SizeVT added in v0.14.0 

func (m *Packet_CallCancel) SizeVT() (n int)

type Packet_CallData 

type Packet_CallData struct {
	// CallData is a message in a streaming RPC sequence.
	CallData *CallData `protobuf:"bytes,2,opt,name=call_data,json=callData,proto3,oneof"`
}

func (*Packet_CallData) CloneVT added in v0.12.3 

func (m *Packet_CallData) CloneVT() isPacket_Body

func (*Packet_CallData) EqualVT added in v0.10.0 

func (this *Packet_CallData) EqualVT(thatIface isPacket_Body) bool

func (*Packet_CallData) MarshalToSizedBufferVT 

func (m *Packet_CallData) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*Packet_CallData) MarshalToVT 

func (m *Packet_CallData) MarshalToVT(dAtA []byte) (int, error)

func (*Packet_CallData) SizeVT 

func (m *Packet_CallData) SizeVT() (n int)

type Packet_CallStart 

type Packet_CallStart struct {
	// CallStart initiates a new call.
	CallStart *CallStart `protobuf:"bytes,1,opt,name=call_start,json=callStart,proto3,oneof"`
}

func (*Packet_CallStart) CloneVT added in v0.12.3 

func (m *Packet_CallStart) CloneVT() isPacket_Body

func (*Packet_CallStart) EqualVT added in v0.10.0 

func (this *Packet_CallStart) EqualVT(thatIface isPacket_Body) bool

func (*Packet_CallStart) MarshalToSizedBufferVT 

func (m *Packet_CallStart) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*Packet_CallStart) MarshalToVT 

func (m *Packet_CallStart) MarshalToVT(dAtA []byte) (int, error)

func (*Packet_CallStart) SizeVT 

func (m *Packet_CallStart) SizeVT() (n int)

type PrefixClient added in v0.12.0 

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

PrefixClient checks for and strips a set of prefixes from a Client.

func NewPrefixClient added in v0.12.0 

func NewPrefixClient(client Client, serviceIDPrefixes []string) *PrefixClient

NewPrefixClient constructs a new PrefixClient.

serviceIDPrefixes is the list of service id prefixes to match. strips the prefix before calling the underlying Invoke function. if none of the prefixes match, returns unimplemented. if empty: forwards all services w/o stripping any prefix.

func (*PrefixClient) ExecCall added in v0.12.0 

func (i *PrefixClient) ExecCall(ctx context.Context, service, method string, in, out Message) error

ExecCall executes a request/reply RPC with the remote.

func (*PrefixClient) NewStream added in v0.12.0 

func (i *PrefixClient) NewStream(ctx context.Context, service, method string, firstMsg Message) (Stream, error)

NewStream starts a streaming RPC with the remote & returns the stream. firstMsg is optional.

type PrefixInvoker added in v0.11.3 

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

PrefixInvoker checks for and strips a set of prefixes from a Invoker.

func NewPrefixInvoker added in v0.11.3 

func NewPrefixInvoker(inv Invoker, serviceIDPrefixes []string) *PrefixInvoker

NewPrefixInvoker constructs a new PrefixInvoker.

serviceIDPrefixes is the list of service id prefixes to match. strips the prefix before calling the underlying Invoke function. if none of the prefixes match, returns unimplemented. if empty: forwards all services w/o stripping any prefix.

func (*PrefixInvoker) InvokeMethod added in v0.11.3 

func (i *PrefixInvoker) InvokeMethod(serviceID, methodID string, strm Stream) (bool, error)

InvokeMethod invokes the method matching the service & method ID. Returns false, nil if not found. If service string is empty, ignore it.

type RawMessage added in v0.15.2 

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

RawMessage is a raw protobuf message container.

func NewRawMessage added in v0.15.2 

func NewRawMessage(data []byte, copy bool) *RawMessage

NewRawMessage constructs a new raw message. If copy=true, copies data in MarshalVT. Note: the data buffer will be retained and used. The data buffer will be written to and/or replaced in UnmarshalVT.

func (*RawMessage) GetData added in v0.15.2 

func (m *RawMessage) GetData() []byte

GetData returns the data buffer without copying.

func (*RawMessage) MarshalVT added in v0.15.2 

func (m *RawMessage) MarshalVT() ([]byte, error)

func (*RawMessage) SetData added in v0.15.2 

func (m *RawMessage) SetData(data []byte)

SetData sets the data buffer. if copy=true, copies the data to the internal slice. otherwise retains the buffer.

func (*RawMessage) UnmarshalVT added in v0.15.2 

func (m *RawMessage) UnmarshalVT(data []byte) error

type RwcConn added in v0.10.8 

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

RwcConn implements a Conn with a buffered ReadWriteCloser.

func NewRwcConn added in v0.10.8 

func NewRwcConn(
	ctx context.Context,
	rwc io.ReadWriteCloser,
	laddr, raddr net.Addr,
	bufferPacketN int,
) *RwcConn

NewRwcConn constructs a new packet conn and starts the rx pump.

func (*RwcConn) Close added in v0.10.8 

func (p *RwcConn) Close() error

Close closes the connection. Any blocked ReadFrom or WriteTo operations will be unblocked and return errors.

func (*RwcConn) LocalAddr added in v0.10.8 

func (p *RwcConn) LocalAddr() net.Addr

LocalAddr returns the local network address.

func (*RwcConn) Read added in v0.10.8 

func (p *RwcConn) Read(b []byte) (n int, err error)

Read reads data from the connection. Read can be made to time out and return an error after a fixed time limit; see SetDeadline and SetReadDeadline.

func (*RwcConn) RemoteAddr added in v0.10.8 

func (p *RwcConn) RemoteAddr() net.Addr

RemoteAddr returns the bound remote network address.

func (*RwcConn) SetDeadline added in v0.10.8 

func (p *RwcConn) SetDeadline(t time.Time) error

SetDeadline sets the read and write deadlines associated with the connection. It is equivalent to calling both SetReadDeadline and SetWriteDeadline.

A deadline is an absolute time after which I/O operations fail instead of blocking. The deadline applies to all future and pending I/O, not just the immediately following call to Read or Write. After a deadline has been exceeded, the connection can be refreshed by setting a deadline in the future.

If the deadline is exceeded a call to Read or Write or to other I/O methods will return an error that wraps os.ErrDeadlineExceeded. This can be tested using errors.Is(err, os.ErrDeadlineExceeded). The error's Timeout method will return true, but note that there are other possible errors for which the Timeout method will return true even if the deadline has not been exceeded.

An idle timeout can be implemented by repeatedly extending the deadline after successful ReadFrom or WriteTo calls.

A zero value for t means I/O operations will not time out.

func (*RwcConn) SetReadDeadline added in v0.10.8 

func (p *RwcConn) SetReadDeadline(t time.Time) error

SetReadDeadline sets the deadline for future ReadFrom calls and any currently-blocked ReadFrom call. A zero value for t means ReadFrom will not time out.

func (*RwcConn) SetWriteDeadline added in v0.10.8 

func (p *RwcConn) SetWriteDeadline(t time.Time) error

SetWriteDeadline sets the deadline for future WriteTo calls and any currently-blocked WriteTo call. Even if write times out, it may return n > 0, indicating that some of the data was successfully written. A zero value for t means WriteTo will not time out.

func (*RwcConn) Write added in v0.10.8 

func (p *RwcConn) Write(pkt []byte) (n int, err error)

Write writes data to the connection.

type Server 

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

Server handles incoming RPC streams with a mux.

func NewServer 

func NewServer(invoker Invoker) *Server

NewServer constructs a new SRPC server.

func (*Server) AcceptMuxedConn added in v0.3.5 

func (s *Server) AcceptMuxedConn(ctx context.Context, mc network.MuxedConn) error

AcceptMuxedConn runs a loop which calls Accept on a muxer to handle streams.

Starts HandleStream in a separate goroutine to handle the stream. Returns context.Canceled or io.EOF when the loop is complete / closed.

func (*Server) GetInvoker added in v0.10.7 

func (s *Server) GetInvoker() Invoker

GetInvoker returns the invoker.

func (*Server) HandleStream added in v0.3.5 

func (s *Server) HandleStream(ctx context.Context, rwc io.ReadWriteCloser)

HandleStream handles an incoming stream and runs the read loop.

type ServerRPC 

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

ServerRPC represents the server side of an on-going RPC call message stream.

func NewServerRPC 

func NewServerRPC(ctx context.Context, invoker Invoker, writer Writer) *ServerRPC

NewServerRPC constructs a new ServerRPC session. note: call SetWriter before handling any incoming messages.

func (*ServerRPC) Context 

func (c *ServerRPC) Context() context.Context

Context is canceled when the rpc has finished.

func (*ServerRPC) HandleCallCancel added in v0.15.0 

func (c *ServerRPC) HandleCallCancel() error

HandleCallCancel handles the call cancel packet.

func (*ServerRPC) HandleCallData 

func (c *ServerRPC) HandleCallData(pkt *CallData) error

HandleCallData handles the call data packet.

func (*ServerRPC) HandleCallStart 

func (r *ServerRPC) HandleCallStart(pkt *CallStart) error

HandleCallStart handles the call start packet.

func (*ServerRPC) HandlePacket 

func (r *ServerRPC) HandlePacket(msg *Packet) error

HandlePacket handles an incoming parsed message packet.

func (*ServerRPC) HandleStreamClose added in v0.8.0 

func (c *ServerRPC) HandleStreamClose(closeErr error)

HandleStreamClose handles the incoming stream closing w/ optional error.

func (*ServerRPC) ReadOne added in v0.15.0 

func (c *ServerRPC) ReadOne() ([]byte, error)

ReadOne reads a single message and returns.

returns io.EOF if the stream ended without a packet.

func (*ServerRPC) Wait added in v0.8.0 

func (c *ServerRPC) Wait(ctx context.Context) error

Wait waits for the RPC to finish.

func (*ServerRPC) WriteCallData added in v0.15.0 

func (c *ServerRPC) WriteCallData(data []byte, complete bool, err error) error

WriteCallData writes a call data packet.

func (*ServerRPC) WriteCancel added in v0.15.3 

func (c *ServerRPC) WriteCancel() error

WriteCancel writes a call cancel packet.

type Stream 

type Stream interface {
	// Context is canceled when the Stream is no longer valid.
	Context() context.Context

	// MsgSend sends the message to the remote.
	MsgSend(msg Message) error

	// MsgRecv receives an incoming message from the remote.
	// Parses the message into the object at msg.
	MsgRecv(msg Message) error

	// CloseSend signals to the remote that we will no longer send any messages.
	CloseSend() error

	// Close closes the stream for reading and writing.
	Close() error
}

Stream is a handle to an on-going bi-directional or one-directional stream RPC handle.

type Writer 

type Writer interface {
	// WritePacket writes a packet to the remote.
	WritePacket(p *Packet) error
	// Close closes the writer.
	Close() error
}

Writer is the interface used to write messages to the remote.

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