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option.go
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option.go
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package sql
type registerConfig struct {
serviceName string
analyticsRate float64
}
// RegisterOption represents an option that can be passed to Register.
type RegisterOption func(*registerConfig)
func defaults(cfg *registerConfig) {
// default cfg.serviceName set in Register based on driver name
// cfg.analyticsRate = globalconfig.AnalyticsRate()
}
// WithServiceName sets the given service name for the registered driver.
func WithServiceName(name string) RegisterOption {
return func(cfg *registerConfig) {
cfg.serviceName = name
}
}
// WithAnalytics enables Trace Analytics for all started spans.
func WithAnalytics(on bool) RegisterOption {
if on {
return WithAnalyticsRate(1.0)
}
return WithAnalyticsRate(0.0)
}
// WithAnalyticsRate sets the sampling rate for Trace Analytics events
// correlated to started spans.
func WithAnalyticsRate(rate float64) RegisterOption {
return func(cfg *registerConfig) {
cfg.analyticsRate = rate
}
}