stats

Documentation

Overview

Package stats is for collecting and reporting various network and RPC stats. This package is for monitoring purpose only. All fields are read-only. All APIs are experimental.

Index

• func OutgoingTags(ctx context.Context) []byte
• func OutgoingTrace(ctx context.Context) []byte
• func SetIncomingTags(ctx context.Context, b []byte) context.Context
• func SetIncomingTrace(ctx context.Context, b []byte) context.Context
• func SetTags(ctx context.Context, b []byte) context.Context
• func SetTrace(ctx context.Context, b []byte) context.Context
• func Tags(ctx context.Context) []byte
• func Trace(ctx context.Context) []byte
• type Begin
  • func (s *Begin) IsClient() bool
• type ConnBegin
  • func (s *ConnBegin) IsClient() bool
• type ConnEnd
  • func (s *ConnEnd) IsClient() bool
• type ConnStats
• type ConnTagInfo
• type End
  • func (s *End) IsClient() bool
• type Handler
• type InHeader
  • func (s *InHeader) IsClient() bool
• type InPayload
  • func (s *InPayload) IsClient() bool
• type InTrailer
  • func (s *InTrailer) IsClient() bool
• type OutHeader
  • func (s *OutHeader) IsClient() bool
• type OutPayload
  • func (s *OutPayload) IsClient() bool
• type OutTrailer
  • func (s *OutTrailer) IsClient() bool
• type RPCStats
• type RPCTagInfo

Functions

func OutgoingTags

func OutgoingTags(ctx context.Context) []byte

OutgoingTags returns the tags from the context for the outbound RPC.

This is intended for gRPC-internal use ONLY.

func OutgoingTrace

func OutgoingTrace(ctx context.Context) []byte

OutgoingTrace returns the trace from the context for the outbound RPC. It is intended for gRPC-internal use.

func SetIncomingTags

func SetIncomingTags(ctx context.Context, b []byte) context.Context

SetIncomingTags attaches stats tagging data to the context, to be read by the application (not sent in outgoing RPCs).

This is intended for gRPC-internal use ONLY.

func SetIncomingTrace

func SetIncomingTrace(ctx context.Context, b []byte) context.Context

SetIncomingTrace attaches stats tagging data to the context, to be read by the application (not sent in outgoing RPCs). It is intended for gRPC-internal use.

func SetTags

func SetTags(ctx context.Context, b []byte) context.Context

SetTags attaches stats tagging data to the context, which will be sent in the outgoing RPC with the header grpc-tags-bin. Subsequent calls to SetTags will overwrite the values from earlier calls.

NOTE: this is provided only for backward compatibility with existing clients and will likely be removed in an upcoming release. New uses should transmit this type of data using metadata with a different, non-reserved (i.e. does not begin with "grpc-") header name.

func SetTrace

func SetTrace(ctx context.Context, b []byte) context.Context

SetTrace attaches stats tagging data to the context, which will be sent in the outgoing RPC with the header grpc-trace-bin. Subsequent calls to SetTrace will overwrite the values from earlier calls.

NOTE: this is provided only for backward compatibility with existing clients and will likely be removed in an upcoming release. New uses should transmit this type of data using metadata with a different, non-reserved (i.e. does not begin with "grpc-") header name.

func Tags

func Tags(ctx context.Context) []byte

Tags returns the tags from the context for the inbound RPC.

NOTE: this is provided only for backward compatibility with existing clients and will likely be removed in an upcoming release. New uses should transmit this type of data using metadata with a different, non-reserved (i.e. does not begin with "grpc-") header name.

func Trace

func Trace(ctx context.Context) []byte

Trace returns the trace from the context for the inbound RPC.

NOTE: this is provided only for backward compatibility with existing clients and will likely be removed in an upcoming release. New uses should transmit this type of data using metadata with a different, non-reserved (i.e. does not begin with "grpc-") header name.

Types

type Begin

type Begin struct {
	// Client is true if this Begin is from client side.
	Client bool
	// BeginTime is the time when the RPC begins.
	BeginTime time.Time
	// FailFast indicates if this RPC is failfast.
	FailFast bool
}

Begin contains stats when an RPC begins. FailFast is only valid if this Begin is from client side.

func (*Begin) IsClient

func (s *Begin) IsClient() bool

IsClient indicates if the stats information is from client side.

type ConnBegin

type ConnBegin struct {
	// Client is true if this ConnBegin is from client side.
	Client bool
}

ConnBegin contains the stats of a connection when it is established.

func (*ConnBegin) IsClient

func (s *ConnBegin) IsClient() bool

IsClient indicates if this is from client side.

type ConnEnd

type ConnEnd struct {
	// Client is true if this ConnEnd is from client side.
	Client bool
}

ConnEnd contains the stats of a connection when it ends.

func (*ConnEnd) IsClient

func (s *ConnEnd) IsClient() bool

IsClient indicates if this is from client side.

type ConnStats

type ConnStats interface {

	// IsClient returns true if this ConnStats is from client side.
	IsClient() bool
	// contains filtered or unexported methods
}

ConnStats contains stats information about connections.

type ConnTagInfo

type ConnTagInfo struct {
	// RemoteAddr is the remote address of the corresponding connection.
	RemoteAddr net.Addr
	// LocalAddr is the local address of the corresponding connection.
	LocalAddr net.Addr
}

ConnTagInfo defines the relevant information needed by connection context tagger.

type End

type End struct {
	// Client is true if this End is from client side.
	Client bool
	// BeginTime is the time when the RPC began.
	BeginTime time.Time
	// EndTime is the time when the RPC ends.
	EndTime time.Time
	// Trailer contains the trailer metadata received from the server. This
	// field is only valid if this End is from the client side.
	// Deprecated: use Trailer in InTrailer instead.
	Trailer metadata.MD
	// Error is the error the RPC ended with. It is an error generated from
	// status.Status and can be converted back to status.Status using
	// status.FromError if non-nil.
	Error error
}

End contains stats when an RPC ends.

func (*End) IsClient

func (s *End) IsClient() bool

IsClient indicates if this is from client side.

type Handler

type Handler interface {
	// TagRPC can attach some information to the given context.
	// The context used for the rest lifetime of the RPC will be derived from
	// the returned context.
	TagRPC(context.Context, *RPCTagInfo) context.Context
	// HandleRPC processes the RPC stats.
	HandleRPC(context.Context, RPCStats)

	// TagConn can attach some information to the given context.
	// The returned context will be used for stats handling.
	// For conn stats handling, the context used in HandleConn for this
	// connection will be derived from the context returned.
	// For RPC stats handling,
	//  - On server side, the context used in HandleRPC for all RPCs on this
	// connection will be derived from the context returned.
	//  - On client side, the context is not derived from the context returned.
	TagConn(context.Context, *ConnTagInfo) context.Context
	// HandleConn processes the Conn stats.
	HandleConn(context.Context, ConnStats)
}

Handler defines the interface for the related stats handling (e.g., RPCs, connections).

type InHeader

type InHeader struct {
	// Client is true if this InHeader is from client side.
	Client bool
	// WireLength is the wire length of header.
	WireLength int
	// Compression is the compression algorithm used for the RPC.
	Compression string
	// Header contains the header metadata received.
	Header metadata.MD

	// The following fields are valid only if Client is false.
	// FullMethod is the full RPC method string, i.e., /package.service/method.
	FullMethod string
	// RemoteAddr is the remote address of the corresponding connection.
	RemoteAddr net.Addr
	// LocalAddr is the local address of the corresponding connection.
	LocalAddr net.Addr
}

InHeader contains stats when a header is received.

func (*InHeader) IsClient

func (s *InHeader) IsClient() bool

IsClient indicates if the stats information is from client side.

type InPayload

type InPayload struct {
	// Client is true if this InPayload is from client side.
	Client bool
	// Payload is the payload with original type.
	Payload interface{}
	// Data is the serialized message payload.
	Data []byte
	// Length is the length of uncompressed data.
	Length int
	// WireLength is the length of data on wire (compressed, signed, encrypted).
	WireLength int
	// RecvTime is the time when the payload is received.
	RecvTime time.Time
}

InPayload contains the information for an incoming payload.

func (*InPayload) IsClient

func (s *InPayload) IsClient() bool

IsClient indicates if the stats information is from client side.

type InTrailer

type InTrailer struct {
	// Client is true if this InTrailer is from client side.
	Client bool
	// WireLength is the wire length of trailer.
	WireLength int
	// Trailer contains the trailer metadata received from the server. This
	// field is only valid if this InTrailer is from the client side.
	Trailer metadata.MD
}

InTrailer contains stats when a trailer is received.

func (*InTrailer) IsClient

func (s *InTrailer) IsClient() bool

IsClient indicates if the stats information is from client side.

type OutHeader

type OutHeader struct {
	// Client is true if this OutHeader is from client side.
	Client bool
	// Compression is the compression algorithm used for the RPC.
	Compression string
	// Header contains the header metadata sent.
	Header metadata.MD

	// The following fields are valid only if Client is true.
	// FullMethod is the full RPC method string, i.e., /package.service/method.
	FullMethod string
	// RemoteAddr is the remote address of the corresponding connection.
	RemoteAddr net.Addr
	// LocalAddr is the local address of the corresponding connection.
	LocalAddr net.Addr
}

OutHeader contains stats when a header is sent.

func (*OutHeader) IsClient

func (s *OutHeader) IsClient() bool

IsClient indicates if this stats information is from client side.

type OutPayload

type OutPayload struct {
	// Client is true if this OutPayload is from client side.
	Client bool
	// Payload is the payload with original type.
	Payload interface{}
	// Data is the serialized message payload.
	Data []byte
	// Length is the length of uncompressed data.
	Length int
	// WireLength is the length of data on wire (compressed, signed, encrypted).
	WireLength int
	// SentTime is the time when the payload is sent.
	SentTime time.Time
}

OutPayload contains the information for an outgoing payload.

func (*OutPayload) IsClient

func (s *OutPayload) IsClient() bool

IsClient indicates if this stats information is from client side.

type OutTrailer

type OutTrailer struct {
	// Client is true if this OutTrailer is from client side.
	Client bool
	// WireLength is the wire length of trailer.
	//
	// Deprecated: This field is never set. The length is not known when this message is
	// emitted because the trailer fields are compressed with hpack after that.
	WireLength int
	// Trailer contains the trailer metadata sent to the client. This
	// field is only valid if this OutTrailer is from the server side.
	Trailer metadata.MD
}

OutTrailer contains stats when a trailer is sent.

func (*OutTrailer) IsClient

func (s *OutTrailer) IsClient() bool

IsClient indicates if this stats information is from client side.

type RPCStats

type RPCStats interface {

	// IsClient returns true if this RPCStats is from client side.
	IsClient() bool
	// contains filtered or unexported methods
}

RPCStats contains stats information about RPCs.

type RPCTagInfo

type RPCTagInfo struct {
	// FullMethodName is the RPC method in the format of /package.service/method.
	FullMethodName string
	// FailFast indicates if this RPC is failfast.
	// This field is only valid on client side, it's always false on server side.
	FailFast bool
}

RPCTagInfo defines the relevant information needed by RPC context tagger.