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honeycombio/otel-config-go

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:

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.