nrgrpc

README

nrgrpc

gRPC stats.Handler implementation to measure and send performances metrics to New Relic.

Example

gRPC server

nrgrpc.NewServerStatsHandler creates a stats.Handler instance for gRPC servers. When the handler is passed to a gRPC server with stats.StatsHandler, it will set a newrelic.Transaction into a request context.Context using newrelic.NewContext. So you can retrieve newrelic.Transaction instances with newrelic.FromContext.

func main() {
	lis, err := net.Listen("tcp", ":3000")
	if err != nil {
		panic(err)
	}

	// Initiailze a `newrelic.Appliation`
	nrapp, err := newrelic.NewApplication(newrelic.Config{
		AppName: "your_app",
		License: "your_license_key",
	})
	if err != nil {
		panic(err)
	}

	s := grpc.NewServer(
		// Create a `stats.Handler` from `newrelic.Application`
		stats.StatsHandler(nrgrpc.NewServerStatsHandler(nrapp)),
	)

	// Register server implementations

	s.Serve(lis)
}

gRPC client

func main() {
	// Initiailze a `newrelic.Appliation`
	nrapp, err := newrelic.NewApplication(newrelic.Config{
		AppName: "your_app",
		License: "your_license_key",
	})
	if err != nil {
		panic(err)
	}

	// Create a `grpc.ClientConn` with `stats.Handler`
	conn, err := grpc.Dial(
		":3000",
		grpc.WithInsecure(),
		grpc.WithStatsHandler(nrgrpc.NewClientStatsHandler()),
	)
	if err != nil {
		panic(err)
	}


	// Register http handler using `https://godoc.org/github.com/newrelic/go-agent.WrapHandleFunc`.
	// This wrapper sets `newrelic.Transaction` into the `http.Request`'s context.
	nrhttp.WrapHandleFunc(app, "/foo", func(w http.ResponseWriter, r *http.Request) {
		resp, err := NewFooServiceClient.BarCall(r.Context(), &BarRequest{})
		// ...
	})
}

Documentation

Index

• func NewClientStatsHandler() stats.Handler
• func NewGatewayStatsHandler() stats.Handler
• func NewServerStatsHandler(app newrelic.Application, opts ...Option) stats.Handler
• type Option
  • func WithIgnoredMethods(fullMethods ...string) Option
  • func WithIgnoredServices(services ...string) Option
• type Options
  • func (o *Options) IsIgnored(fullMethod string) bool

Functions

func NewClientStatsHandler

func NewClientStatsHandler() stats.Handler

NewClientStatsHandler creates a new stats.Handler instance for measuring application performances with New Relic.

func NewGatewayStatsHandler

func NewGatewayStatsHandler() stats.Handler

NewGatewayStatsHandler creates a new stats.Handler instance for measuring application performances with New Relic.

func NewServerStatsHandler

func NewServerStatsHandler(app newrelic.Application, opts ...Option) stats.Handler

NewServerStatsHandler creates a new stats.Handler instance for measuring application performances with New Relic.

Types

type Option

type Option func(Options) Options

Option is a function for building configurations object for an interceptor

func WithIgnoredMethods

func WithIgnoredMethods(fullMethods ...string) Option

WithIgnoredMethods receives full method names to get newrelic to ignore them

func WithIgnoredServices

func WithIgnoredServices(services ...string) Option

WithIgnoredServices receives service names to get newrelic to ignore them

type Options

type Options struct {
	IgnoredServices map[string]struct{}
	IgnoredMethods  map[string]struct{}
}

Options contains some configurations for an interceptor

func (*Options) IsIgnored

func (o *Options) IsIgnored(fullMethod string) bool

IsIgnored returned true if the given method is ignored