otel-config-go (formerly otel-launcher-go)

This project is a configuration layer that chooses default values for configuration options that many OpenTelemetry users would ultimately configure manually, allowing for minimal code to quickly instrument with OpenTelemetry.

Latest release built with:

• OpenTelemetry Go v1.28.0/v0.50.0
• OpenTelemetry Go Contrib v1.28.0/v0.53.0
• OpenTelemetry Semantic Conventions v1.26.0

Minimum Go Version: 1.21

See the OpenTelemetry SDK's compatability matrix for more information.

Getting started

go get github.com/honeycombio/otel-config-go

Configure

Minimal setup - by default will send all telemetry via GRPC to localhost:4317

import "github.com/honeycombio/otel-config-go/otelconfig"

func main() {
    otelShutdown, err := otelconfig.ConfigureOpenTelemetry()
    defer otelShutdown()
}

You can set headers directly instead.

import "github.com/honeycombio/otel-config-go/otelconfig"

func main() {
    otelShutdown, err := otelconfig.ConfigureOpenTelemetry(
        otelconfig.WithServiceName("service-name"),
        otelconfig.WithHeaders(map[string]string{
            "service-auth-key": "value",
            "service-useful-field": "testing",
        }),
    )
    defer otelShutdown()
}

Migrating from otel-launcher-go to otel-config-go

As of v1.8.0, this package has been renamed from otel-launcher-go to otel-config-go. When migrating to use the renamed package, all references to launcher should be changed to otelconfig.

Configuration Options

Config Option	Env Variable	Required	Default
WithServiceName	OTEL_SERVICE_NAME	y	-
WithServiceVersion	OTEL_SERVICE_VERSION	n	-
WithHeaders	OTEL_EXPORTER_OTLP_HEADERS	n	{}
WithTracesHeaders	OTEL_EXPORTER_OTLP_TRACES_HEADERS	n	{}
WithMetricsHeaders	OTEL_EXPORTER_OTLP_METRICS_HEADERS	n	{}
WithExporterProtocol	OTEL_EXPORTER_OTLP_PROTOCOL	n	grpc
WithTracesExporterEndpoint	OTEL_EXPORTER_OTLP_TRACES_ENDPOINT	n	localhost:4317
WithTracesExporterInsecure	OTEL_EXPORTER_OTLP_TRACES_INSECURE	n	false
WithMetricsExporterEndpoint	OTEL_EXPORTER_OTLP_METRICS_ENDPOINT	n	localhost:4317
WithMetricsExporterInsecure	OTEL_EXPORTER_OTLP_METRICS_INSECURE	n	false
WithLogLevel	OTEL_LOG_LEVEL	n	info
WithPropagators	OTEL_PROPAGATORS	n	tracecontext,baggage
WithResourceAttributes	OTEL_RESOURCE_ATTRIBUTES	n	-
WithMetricsReportingPeriod	OTEL_EXPORTER_OTLP_METRICS_PERIOD	n	30s
WithMetricsEnabled	OTEL_METRICS_ENABLED	n	true
WithTracesEnabled	OTEL_TRACES_ENABLED	n	true

---

This is a joint effort alongside LightStep and is based their initial otel-launcher-go. The intention is to contribute this to OpenTelemetry Go Contrib.