Nodejs app to push/pop with SQS

sqs-express.js

//-------------------------------------
// Nodejs app to push/pop with SQS
// $ npm install aws-sdk express
// $ node sqs-express.js
//-------------------------------------

var express = require('express'),
    AWS = require('aws-sdk');

AWS.config.update({
   accessKeyId: process.env.AWS_KEY,
   secretAccessKey: process.env.AWS_SECRET,
   region: 'ap-southeast-2'});

var app = express(),
    sqs = new AWS.SQS(),
    queueUrl = 'https://sqs.ap-southeast-2.amazonaws.com/1234567890/my_test_queue';

//-------------------------------------

function logErrorOrData(action, err, data) {
  console.log("------\t"+action+"\t-----------")
  if (err)
    console.log(err, err.stack);
  else
    console.log(data);
  console.log("---------------------------")
}

function deleteMessage(handle) {
  var params = {
    QueueUrl: queueUrl,
    ReceiptHandle: handle
  };
  sqs.deleteMessage(params, function(err, data) {
    logErrorOrData('delete', err, data)
  });
}

//----------- ROUTES ------------------

app.get('/push', function(req, res) {
  var params = {
    QueueUrl: queueUrl,
    MessageBody: JSON.stringify(req.query),
  };
  sqs.sendMessage(params, function(err, data) {
    logErrorOrData('send', err, data);
  });
  res.send('OK');
});

app.get('/pop', function(req, res) {
  var params = {
    QueueUrl: queueUrl,
    MaxNumberOfMessages: 1,
  };
  sqs.receiveMessage(params, function(err, data) {
    logErrorOrData('receive', err, data);
    if (!err) deleteMessage(data.Messages[0]['ReceiptHandle']);
  });
  res.send('OK');
});


app.listen(3000);
console.log('Server running at http://127.0.0.1:3000/');