grpctrace

Documentation

Overview

Package grpctrace is a package to assist with tracing incoming and outgoing gRPC requests.

Index

• type ClientStatsHandler
  • func NewClientStatsHandler() *ClientStatsHandler
  • func (c *ClientStatsHandler) HandleConn(ctx context.Context, cs stats.ConnStats)
  • func (c *ClientStatsHandler) HandleRPC(ctx context.Context, rs stats.RPCStats)
  • func (c *ClientStatsHandler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context
  • func (c *ClientStatsHandler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context
• type ServerStatsHandler
  • func NewServerStatsHandler() *ServerStatsHandler
  • func (s *ServerStatsHandler) HandleConn(ctx context.Context, cs stats.ConnStats)
  • func (s *ServerStatsHandler) HandleRPC(ctx context.Context, rs stats.RPCStats)
  • func (s *ServerStatsHandler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context
  • func (s *ServerStatsHandler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context

Examples

• NewClientStatsHandler
• NewServerStatsHandler

Types

type ClientStatsHandler

type ClientStatsHandler struct{}

ClientStatsHandler is a an implementation of grpc.StatsHandler that can be passed to grpc.Dial using grpc.WithStatsHandler to enable trace context propagation and automatic span creation for outgoing gRPC requests.

func NewClientStatsHandler

func NewClientStatsHandler() *ClientStatsHandler

NewClientStatsHandler returns a StatsHandler that can be passed to grpc.Dial using grpc.WithStatsHandler to enable trace context propagation and automatic span creation for outgoing gRPC requests.

Example

package main

import (
	"log"

	"go.opencensus.io/plugin/grpc/grpctrace"
	"google.golang.org/grpc"
)

func main() {
	// Set up a new client connection with the OpenCensus
	// stats handler to enable tracing for the outgoing requests.
	conn, err := grpc.Dial("address", grpc.WithStatsHandler(grpctrace.NewClientStatsHandler()))
	if err != nil {
		log.Fatalf("did not connect: %v", err)
	}
	defer conn.Close()
}

func (*ClientStatsHandler) HandleConn

func (c *ClientStatsHandler) HandleConn(ctx context.Context, cs stats.ConnStats)

HandleConn is a no-op for this StatsHandler.

func (*ClientStatsHandler) HandleRPC

func (c *ClientStatsHandler) HandleRPC(ctx context.Context, rs stats.RPCStats)

HandleRPC processes the RPC stats, adding information to the current trace span.

func (*ClientStatsHandler) TagConn

func (c *ClientStatsHandler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context

TagConn is a no-op for this StatsHandler.

func (*ClientStatsHandler) TagRPC

func (c *ClientStatsHandler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context

TagRPC creates a new trace span for the client side of the RPC.

It returns ctx with the new trace span added and a serialization of the SpanContext added to the outgoing gRPC metadata.

type ServerStatsHandler

type ServerStatsHandler struct{}

ServerStatsHandler is a an implementation of grpc.StatsHandler that can be passed to grpc.NewServer using grpc.StatsHandler to enable trace context propagation and automatic span creation for incoming gRPC requests..

func NewServerStatsHandler

func NewServerStatsHandler() *ServerStatsHandler

NewServerStatsHandler returns a StatsHandler that can be passed to grpc.NewServer using grpc.StatsHandler to enable trace context propagation and automatic span creation for incoming gRPC requests.

Example

package main

import (
	"go.opencensus.io/plugin/grpc/grpctrace"
	"google.golang.org/grpc"
)

func main() {
	// Set up a new client connection with the OpenCensus
	// stats handler to enable tracing for the incoming requests.
	s := grpc.NewServer(grpc.StatsHandler(grpctrace.NewServerStatsHandler()))
	_ = s // use s
}

func (*ServerStatsHandler) HandleConn

func (s *ServerStatsHandler) HandleConn(ctx context.Context, cs stats.ConnStats)

HandleConn is a no-op for this StatsHandler.

func (*ServerStatsHandler) HandleRPC

func (s *ServerStatsHandler) HandleRPC(ctx context.Context, rs stats.RPCStats)

HandleRPC processes the RPC stats, adding information to the current trace span.

func (*ServerStatsHandler) TagConn

func (s *ServerStatsHandler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context

TagConn is a no-op for this StatsHandler.

func (*ServerStatsHandler) TagRPC

func (s *ServerStatsHandler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context

TagRPC creates a new trace span for the server side of the RPC.

It checks the incoming gRPC metadata in ctx for a SpanContext, and if it finds one, uses that SpanContext as the parent context of the new span.

It returns ctx, with the new trace span added.