forked from DataDog/dd-trace-go
/
option.go
80 lines (67 loc) · 1.98 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 consul
import (
"math"
"net"
"gopkg.in/DataDog/dd-trace-go.v1/internal"
"gopkg.in/DataDog/dd-trace-go.v1/internal/namingschema"
consul "github.com/hashicorp/consul/api"
)
const (
defaultServiceName = "consul"
)
type clientConfig struct {
serviceName string
spanName string
analyticsRate float64
hostname string
}
// ClientOption represents an option that can be used to create or wrap a client.
type ClientOption func(*clientConfig)
func defaults(cfg *clientConfig) {
cfg.serviceName = namingschema.ServiceNameOverrideV0(defaultServiceName, defaultServiceName)
cfg.spanName = namingschema.OpName(namingschema.ConsulOutbound)
if internal.BoolEnv("DD_TRACE_CONSUL_ANALYTICS_ENABLED", false) {
cfg.analyticsRate = 1.0
} else {
cfg.analyticsRate = math.NaN()
}
}
// WithServiceName sets the given service name for the client.
func WithServiceName(name string) ClientOption {
return func(cfg *clientConfig) {
cfg.serviceName = name
}
}
// WithAnalytics enables Trace Analytics for all started spans.
func WithAnalytics(on bool) ClientOption {
return func(cfg *clientConfig) {
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) ClientOption {
return func(cfg *clientConfig) {
if rate >= 0.0 && rate <= 1.0 {
cfg.analyticsRate = rate
} else {
cfg.analyticsRate = math.NaN()
}
}
}
// WithConfig extracts the config information for the client to be tagged
func WithConfig(config *consul.Config) ClientOption {
return func(cfg *clientConfig) {
if host, _, err := net.SplitHostPort(config.Address); err == nil {
cfg.hostname = host
}
}
}