grpc

Documentation

Overview

Package grpc is a generated protocol buffer package.

It is generated from these files:

fixtures_test.proto

It has these top-level messages:

FixtureRequest
FixtureReply

Package grpc provides functions to trace the google.golang.org/grpc package v1.2.

Example (Client)

package main

import (
	"log"

	grpctrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/grpc"

	"google.golang.org/grpc"
)

func main() {
	// Create the client interceptor using the grpc trace package.
	si := grpctrace.StreamClientInterceptor(grpctrace.WithServiceName("my-grpc-client"))
	ui := grpctrace.UnaryClientInterceptor(grpctrace.WithServiceName("my-grpc-client"))

	// Dial in using the created interceptor.
	// Note: To use multiple UnaryInterceptors with grpc.Dial, you must use
	// grpc.WithChainUnaryInterceptor instead (as of google.golang.org/grpc v1.51.0).
	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure(),
		grpc.WithStreamInterceptor(si), grpc.WithUnaryInterceptor(ui))
	if err != nil {
		log.Fatal(err)
	}
	defer conn.Close()

	// And continue using the connection as normal.
}

Example (Server)

package main

import (
	"log"
	"net"

	grpctrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/grpc"

	"google.golang.org/grpc"
)

func main() {
	// Create a listener for the server.
	ln, err := net.Listen("tcp", ":50051")
	if err != nil {
		log.Fatal(err)
	}

	// Create the server interceptor using the grpc trace package.
	si := grpctrace.StreamServerInterceptor(grpctrace.WithServiceName("my-grpc-server"))
	ui := grpctrace.UnaryServerInterceptor(grpctrace.WithServiceName("my-grpc-server"))

	// Initialize the grpc server as normal, using the tracing interceptor.
	s := grpc.NewServer(grpc.StreamInterceptor(si), grpc.UnaryInterceptor(ui))

	// ... register your services

	// Start serving incoming connections.
	if err := s.Serve(ln); err != nil {
		log.Fatalf("failed to serve: %v", err)
	}
}

Index

• func NewClientStatsHandler(opts ...Option) stats.Handler
• func NewServerStatsHandler(opts ...Option) stats.Handler
• func RegisterFixtureServer(s *grpc1.Server, srv FixtureServer)
• func StreamClientInterceptor(opts ...Option) grpc.StreamClientInterceptor
• func StreamServerInterceptor(opts ...Option) grpc.StreamServerInterceptor
• func UnaryClientInterceptor(opts ...Option) grpc.UnaryClientInterceptor
• func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor
• type FixtureClient
  • func NewFixtureClient(cc *grpc1.ClientConn) FixtureClient
• type FixtureReply
  • func (*FixtureReply) Descriptor() ([]byte, []int)
  • func (m *FixtureReply) GetMessage() string
  • func (*FixtureReply) ProtoMessage()
  • func (m *FixtureReply) Reset()
  • func (m *FixtureReply) String() string
• type FixtureRequest
  • func (*FixtureRequest) Descriptor() ([]byte, []int)
  • func (m *FixtureRequest) GetName() string
  • func (*FixtureRequest) ProtoMessage()
  • func (m *FixtureRequest) Reset()
  • func (m *FixtureRequest) String() string
• type FixtureServer
• type Fixture_StreamPingClient
• type Fixture_StreamPingServer
• type InterceptorOption
  • func NonErrorCodes(cs ...codes.Code) InterceptorOption
• type Option
  • func NoDebugStack() Option
  • func WithAnalytics(on bool) Option
  • func WithAnalyticsRate(rate float64) Option
  • func WithCustomTag(key string, value interface{}) Option
  • func WithIgnoredMetadata(ms ...string) Option
  • func WithIgnoredMethods(ms ...string) Option
  • func WithMetadataTags() Option
  • func WithRequestTags() Option
  • func WithServiceName(name string) Option
  • func WithStreamCalls(enabled bool) Option
  • func WithStreamMessages(enabled bool) Option
  • func WithUntracedMethods(ms ...string) Option

Examples

• Package (Client)
• Package (Server)

Functions

func NewClientStatsHandler

func NewClientStatsHandler(opts ...Option) stats.Handler

NewClientStatsHandler returns a gRPC client stats.Handler to trace RPC calls.

func NewServerStatsHandler

func NewServerStatsHandler(opts ...Option) stats.Handler

NewServerStatsHandler returns a gRPC server stats.Handler to trace RPC calls.

func RegisterFixtureServer

func RegisterFixtureServer(s *grpc1.Server, srv FixtureServer)

func StreamClientInterceptor

func StreamClientInterceptor(opts ...Option) grpc.StreamClientInterceptor

StreamClientInterceptor returns a grpc.StreamClientInterceptor which will trace client streams using the given set of options.

func StreamServerInterceptor

func StreamServerInterceptor(opts ...Option) grpc.StreamServerInterceptor

StreamServerInterceptor will trace streaming requests to the given gRPC server.

func UnaryClientInterceptor

func UnaryClientInterceptor(opts ...Option) grpc.UnaryClientInterceptor

UnaryClientInterceptor returns a grpc.UnaryClientInterceptor which will trace requests using the given set of options.

func UnaryServerInterceptor

func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor

UnaryServerInterceptor will trace requests to the given grpc server.

Types

type FixtureClient

type FixtureClient interface {
	Ping(ctx context.Context, in *FixtureRequest, opts ...grpc1.CallOption) (*FixtureReply, error)
	StreamPing(ctx context.Context, opts ...grpc1.CallOption) (Fixture_StreamPingClient, error)
}

func NewFixtureClient

func NewFixtureClient(cc *grpc1.ClientConn) FixtureClient

type FixtureReply

type FixtureReply struct {
	Message string `protobuf:"bytes,1,opt,name=message" json:"message,omitempty"`
}

The response message containing the greetings

func (*FixtureReply) Descriptor

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

func (*FixtureReply) GetMessage

func (m *FixtureReply) GetMessage() string

func (*FixtureReply) ProtoMessage

func (*FixtureReply) ProtoMessage()

func (*FixtureReply) Reset

func (m *FixtureReply) Reset()

func (*FixtureReply) String

func (m *FixtureReply) String() string

type FixtureRequest

type FixtureRequest struct {
	Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
}

The request message containing the user's name.

func (*FixtureRequest) Descriptor

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

func (*FixtureRequest) GetName

func (m *FixtureRequest) GetName() string

func (*FixtureRequest) ProtoMessage

func (*FixtureRequest) ProtoMessage()

func (*FixtureRequest) Reset

func (m *FixtureRequest) Reset()

func (*FixtureRequest) String

func (m *FixtureRequest) String() string

type FixtureServer

type FixtureServer interface {
	Ping(context.Context, *FixtureRequest) (*FixtureReply, error)
	StreamPing(Fixture_StreamPingServer) error
}

type Fixture_StreamPingClient

type Fixture_StreamPingClient interface {
	Send(*FixtureRequest) error
	Recv() (*FixtureReply, error)
	grpc1.ClientStream
}

type Fixture_StreamPingServer

type Fixture_StreamPingServer interface {
	Send(*FixtureReply) error
	Recv() (*FixtureRequest, error)
	grpc1.ServerStream
}

type InterceptorOption

type InterceptorOption = Option

InterceptorOption represents an option that can be passed to the grpc unary client and server interceptors. InterceptorOption is deprecated in favor of Option.

func NonErrorCodes

func NonErrorCodes(cs ...codes.Code) InterceptorOption

NonErrorCodes determines the list of codes which will not be considered errors in instrumentation. This call overrides the default handling of codes.Canceled as a non-error.

type Option

type Option func(*config)

Option specifies a configuration option for the grpc package. Not all options apply to all instrumented structures.

func NoDebugStack

func NoDebugStack() Option

NoDebugStack disables debug stacks for traces with errors. This is useful in situations where errors are frequent and the overhead of calling debug.Stack may affect performance.

func WithAnalytics

func WithAnalytics(on bool) Option

WithAnalytics enables Trace Analytics for all started spans.

func WithAnalyticsRate

func WithAnalyticsRate(rate float64) Option

WithAnalyticsRate sets the sampling rate for Trace Analytics events correlated to started spans.

func WithCustomTag

func WithCustomTag(key string, value interface{}) Option

WithCustomTag will attach the value to the span tagged by the key.

func WithIgnoredMetadata

func WithIgnoredMetadata(ms ...string) Option

WithIgnoredMetadata specifies keys to be ignored while tracing the metadata. Must be used in conjunction with WithMetadataTags.

func WithIgnoredMethods

func WithIgnoredMethods(ms ...string) Option

WithIgnoredMethods specifies full methods to be ignored by the server side interceptor. When an incoming request's full method is in ms, no spans will be created.

Deprecated: This is deprecated in favor of WithUntracedMethods which applies to both the server side and client side interceptors.

func WithMetadataTags

func WithMetadataTags() Option

WithMetadataTags specifies whether gRPC metadata should be added to spans as tags.

func WithRequestTags

func WithRequestTags() Option

WithRequestTags specifies whether gRPC requests should be added to spans as tags.

func WithServiceName

func WithServiceName(name string) Option

WithServiceName sets the given service name for the intercepted client.

func WithStreamCalls

func WithStreamCalls(enabled bool) Option

WithStreamCalls enables or disables tracing of streaming calls. This option does not apply to the stats handler.

func WithStreamMessages

func WithStreamMessages(enabled bool) Option

WithStreamMessages enables or disables tracing of streaming messages. This option does not apply to the stats handler.

func WithUntracedMethods

func WithUntracedMethods(ms ...string) Option

WithUntracedMethods specifies full methods to be ignored by the server side and client side interceptors. When a request's full method is in ms, no spans will be created.