package main

import (
    "github.com/opentracing/opentracing-go"

    "gopkg.in/DataDog/dd-trace-go.v1/ddtrace/opentracer"
    "gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
)

func main() {
    // Start the regular tracer and return it as an opentracing.Tracer interface. You
    // may use the same set of options as you normally would with the Datadog tracer.
    t := opentracer.New(tracer.WithServiceName("<SERVICE_NAME>"))

    // Stop it using the regular Stop call for the tracer package.
    defer tracer.Stop()

    // Set the global OpenTracing tracer.
    opentracing.SetGlobalTracer(t)

    // Use the OpenTracing API as usual.
}