forked from DataDog/dd-trace-go
/
option.go
62 lines (53 loc) · 1.51 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 2016-2020 Datadog, Inc.
package sarama
import (
"math"
"gopkg.in/DataDog/dd-trace-go.v1/internal/globalconfig"
)
type config struct {
consumerServiceName string
producerServiceName string
analyticsRate float64
}
func defaults(cfg *config) {
cfg.producerServiceName = "kafka"
cfg.consumerServiceName = "kafka"
if svc := globalconfig.ServiceName(); svc != "" {
cfg.consumerServiceName = svc
}
// cfg.analyticsRate = globalconfig.AnalyticsRate()
cfg.analyticsRate = math.NaN()
}
// An Option is used to customize the config for the sarama tracer.
type Option func(cfg *config)
// WithServiceName sets the given service name for the intercepted client.
func WithServiceName(name string) Option {
return func(cfg *config) {
cfg.consumerServiceName = name
cfg.producerServiceName = name
}
}
// WithAnalytics enables Trace Analytics for all started spans.
func WithAnalytics(on bool) Option {
return func(cfg *config) {
if on {
cfg.analyticsRate = 1.0
} else {
cfg.analyticsRate = math.NaN()
}
}
}
// WithAnalyticsRate sets the sampling rate for Trace Analytics events
// correlated to started spans.
func WithAnalyticsRate(rate float64) Option {
return func(cfg *config) {
if rate >= 0.0 && rate <= 1.0 {
cfg.analyticsRate = rate
} else {
cfg.analyticsRate = math.NaN()
}
}
}