forked from DataDog/dd-trace-go
/
option.go
70 lines (61 loc) · 1.56 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 leveldb
import (
"context"
"math"
)
type config struct {
ctx context.Context
serviceName string
analyticsRate float64
}
func newConfig(opts ...Option) *config {
cfg := &config{
serviceName: "leveldb",
ctx: context.Background(),
// cfg.analyticsRate: globalconfig.AnalyticsRate(),
analyticsRate: math.NaN(),
}
for _, opt := range opts {
opt(cfg)
}
return cfg
}
// Option represents an option that can be used customize the db tracing config.
type Option func(*config)
// WithContext sets the tracing context for the db.
func WithContext(ctx context.Context) Option {
return func(cfg *config) {
cfg.ctx = ctx
}
}
// WithServiceName sets the given service name for the db.
func WithServiceName(serviceName string) Option {
return func(cfg *config) {
cfg.serviceName = serviceName
}
}
// 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()
}
}
}