forked from DataDog/dd-trace-go
/
option.go
57 lines (48 loc) · 1.27 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 2016-2019 Datadog, Inc.
package restful
import (
"math"
"gopkg.in/DataDog/dd-trace-go.v1/internal/globalconfig"
)
type config struct {
serviceName string
analyticsRate float64
}
func newConfig() *config {
return &config{
serviceName: "go-restful",
analyticsRate: globalconfig.AnalyticsRate(),
}
}
// Option specifies instrumentation configuration options.
type Option func(*config)
// WithServiceName sets the service name to by used by the filter.
func WithServiceName(name string) Option {
return func(cfg *config) {
cfg.serviceName = 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()
}
}
}