OpenWhisk action that adds a message to the readings database

addReadingToDb.js

function action(args) {
  var request = require('sync-request');
  var res = request('POST', 'http://COUCHDB_HOST:COUCHDB_PORT_NUMBER/readings/', {
    json: {reading: args},
    headers: {
      'Content-Type': 'application/json',
    },
  });
}