"use strict";

const { NodeTracerProvider } = require("@opentelemetry/node");
const { SimpleSpanProcessor } = require("@opentelemetry/tracing");
const { ZipkinExporter } = require("@opentelemetry/exporter-zipkin");
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const { ExpressInstrumentation } = require('@opentelemetry/instrumentation-express');
const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');

const provider = new NodeTracerProvider();

provider.addSpanProcessor(
  new SimpleSpanProcessor(
    new ZipkinExporter({
      serviceName: "getting-started"
      // If you are running your tracing backend on another host,
      // you can point to it using the `url` parameter of the
      // exporter config.
    })
  )
);

provider.register();

// load old default plugins
registerInstrumentations({
  instrumentations: [
    new ExpressInstrumentation(),
    new HttpInstrumentation(),
  ],
});

console.log("tracing initialized");