text: 'use strict';
  
  const opentelemetry = require('@opentelemetry/api');
  const { BasicTracerProvider, ConsoleSpanExporter, SimpleSpanProcessor } = require('@opentelemetry/tracing');
  const { JaegerExporter } = require('@opentelemetry/exporter-jaeger');
  
  const provider = new BasicTracerProvider();
  
  // Configure span processor to send spans to the exporter
  const exporter = new JaegerExporter({
    serviceName: 'basic-service',
    endpoint: 'http://localhost:14268/api/traces',
  });
  provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
  provider.addSpanProcessor(new SimpleSpanProcessor(new ConsoleSpanExporter()));
  
  /**
   * Initialize the OpenTelemetry APIs to use the BasicTracerProvider bindings.
   *
   * This registers the tracer provider with the OpenTelemetry API as the global
   * tracer provider. This means when you call API methods like
   * `opentelemetry.trace.getTracer`, they will use this tracer provider. If you
   * do not register a global tracer provider, instrumentation which calls these
   * methods will receive no-op implementations.
   */
  provider.register();
  const tracer = opentelemetry.trace.getTracer('example-basic-tracer-node');
  
  // Create a span. A span must be closed.
  const parentSpan = tracer.startSpan('main');
  for (let i = 0; i < 10; i += 1) {
    doWork(parentSpan);
  }
  // Be sure to end the span.
  parentSpan.end();
  
  // flush and close the connection.
  exporter.shutdown();
  
  function doWork(parent) {
    // Start another span. In this example, the main method already started a
    // span, so that'll be the parent span, and this will be a child span.
    const ctx = opentelemetry.trace.setSpan(opentelemetry.context.active(), parent);
    const span = tracer.startSpan('doWork', undefined, ctx);
  
    // simulate some random work.
    for (let i = 0; i <= Math.floor(Math.random() * 40000000); i += 1) {
      // empty
    }
  
    // Set attributes to the span.
    span.setAttribute('key', 'value');
  
    // Annotate our span to capture metadata about our operation
    span.addEvent('invoking doWork');
  
    span.end();
  }
  