gcf-workaround-example.js

const tracer = require('@google-cloud/trace-agent').start({
  // Settings recommended for Cloud Functions.
  samplingRate: 0,
  bufferSize: 1
});

app.get('/', (req, res) => {
  tracer.runInRootSpan({
    name: 'outer', // Your function name here
    traceContext: tracer.propagation.extract(key => req.headers[key]),
  }, (span) => {
    // Your logic here. Just be sure to call endSpan() after sending a response.
    span.endSpan();
  });
});