client.js

'use strict';

const tracer = require('./tracer')('express-zipkin-opentelemetry-client');
const api = require('@opentelemetry/api');
const axios = require('axios').default;
var count = 10;

function sendRequest() {
  const span = tracer.startSpan('client.sendRequest()', {
    kind: api.SpanKind.CLIENT,
  });

  api.context.with(api.trace.setSpan(api.ROOT_CONTEXT, span), async () => {
    try {
      const res = await axios.get('http://localhost:8080/test');
      console.log('Status:', res.status + ', ' + res.statusText);
      span.setStatus({ code: api.SpanStatusCode.OK });
    } catch (e) {
      console.log('Failed:', e.message);
      span.setStatus({ code: api.SpanStatusCode.ERROR, message: e.message });
    }
    span.end();
    count--;
    if(count === 0) {
      console.log('Final request made, all done now!')
    } else {
      console.log('Request made! ' + count +  ' more to go! \n');
    }
    
  });
}

const setIntervalRef = setInterval(sendRequest, 1000);
setTimeout(() => clearInterval(setIntervalRef), 11000);