/
option.go
82 lines (70 loc) · 2.52 KB
/
option.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016 Datadog, Inc.
package grpc
import (
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
"gopkg.in/DataDog/dd-trace-go.v1/internal"
"gopkg.in/DataDog/dd-trace-go.v1/internal/namingschema"
)
const (
defaultClientServiceName = "grpc.client"
defaultServerServiceName = "grpc.server"
)
type interceptorConfig struct {
serviceName string
spanName string
spanOpts []ddtrace.StartSpanOption
}
// InterceptorOption represents an option that can be passed to the grpc unary
// client and server interceptors.
type InterceptorOption func(*interceptorConfig)
func defaults(cfg *interceptorConfig) {
// cfg.serviceName default set in interceptor
// cfg.spanOpts = append(cfg.spanOpts, tracer.AnalyticsRate(globalconfig.AnalyticsRate()))
if internal.BoolEnv("DD_TRACE_GRPC_ANALYTICS_ENABLED", false) {
cfg.spanOpts = append(cfg.spanOpts, tracer.AnalyticsRate(1.0))
}
}
func clientDefaults(cfg *interceptorConfig) {
cfg.serviceName = namingschema.ServiceNameOverrideV0(defaultClientServiceName, defaultClientServiceName)
cfg.spanName = namingschema.OpName(namingschema.GRPCClient)
defaults(cfg)
}
func serverDefaults(cfg *interceptorConfig) {
cfg.serviceName = namingschema.ServiceName(defaultServerServiceName)
cfg.spanName = namingschema.OpName(namingschema.GRPCServer)
defaults(cfg)
}
// WithServiceName sets the given service name for the intercepted client.
func WithServiceName(name string) InterceptorOption {
return func(cfg *interceptorConfig) {
cfg.serviceName = name
}
}
// WithAnalytics enables Trace Analytics for all started spans.
func WithAnalytics(on bool) InterceptorOption {
return func(cfg *interceptorConfig) {
if on {
WithSpanOptions(tracer.AnalyticsRate(1.0))(cfg)
}
}
}
// WithAnalyticsRate sets the sampling rate for Trace Analytics events
// correlated to started spans.
func WithAnalyticsRate(rate float64) InterceptorOption {
return func(cfg *interceptorConfig) {
if rate >= 0.0 && rate <= 1.0 {
WithSpanOptions(tracer.AnalyticsRate(rate))(cfg)
}
}
}
// WithSpanOptions defines a set of additional ddtrace.StartSpanOption to be added
// to spans started by the integration.
func WithSpanOptions(opts ...ddtrace.StartSpanOption) InterceptorOption {
return func(cfg *interceptorConfig) {
cfg.spanOpts = append(cfg.spanOpts, opts...)
}
}