test2.js

'use strict';

const signalFxLambda = require('./signalfx-lambda');

console.log('Loading function');

function getState(event) {
  let state = {
    sleepDuration: parseInt(event.sleepDuration || '0'),
  }
  return state;
}

exports.handler = signalFxLambda.wrapper((event, context, callback) => {
  signalFxLambda.helper.sendGauge('application.performance', state.sleepDuration);
  console.log('Custom app metric is ' + state.sleepDuration);
});