How to use the aws-xray-sdk.middleware function in aws-xray-sdk

// Include the AWS X-Ray Node.js SDK and set configuration
//ref:  https://docs.aws.amazon.com/xray-sdk-for-nodejs/latest/reference/
const XRay = require('aws-xray-sdk');
const AWS  = XRay.captureAWS(require('aws-sdk'));
const http = XRay.captureHTTPs(require('http'));
const express = require('express');
// const request = require('sync-request');

// Constants
const PORT = 8080;
const HOST = '0.0.0.0';
AWS.config.region = process.env.REGION

XRay.config([XRay.plugins.EC2Plugin, XRay.plugins.ECSPlugin]);
//XRay.middleware.setSamplingRules('sampling-rules.json');
XRay.middleware.enableDynamicNaming('*.elb.amazonaws.com');

// App
const app = express();
app.use(XRay.express.openSegment('webapp'));

app.get('/', (req, res) => {
	let seg = XRay.getSegment();
	seg.addAnnotation('param_greet', req.query['greet']);
	seg.addAnnotation('param_id', req.query['id']);

	getContent({hostname:`${process.env.GREETER_SERVICE_HOST}` ,port:process.env.GREETER_SERVICE_PORT, path: `/${process.env.GREETER_SERVICE_PATH}?greet=${req.query['greet']}`})
	.then( function (html){ 
		console.log (html); 
		var output1 = html;
		// console.log(`output = ${output1}`);
		getContent({hostname:`${process.env.NAME_SERVICE_HOST}` ,port:process.env.NAME_SERVICE_PORT, path: `/${process.env.NAME_SERVICE_PATH}?id=${req.query['id']}`})

var http = XRay.captureHTTPs(require('http'));

const express = require('express');
var bodyParser = require('body-parser');
var queryString = require('querystring');


// Constants
const PORT = 8080;
const apiCNAME = process.env.API_CNAME || 'localhost';

// App
const app = express();

XRay.config([XRay.plugins.ECSPlugin]);
XRay.middleware.enableDynamicNaming();

app.use(bodyParser.urlencoded({extended: false}));
app.use(XRay.express.openSegment('service-a'));

app.get('/health', function(req, res) {
  res.status(200).send("Healthy");
});

app.get('/', function(req, res) {
  var seg = XRay.getSegment();
  seg.addAnnotation('service', 'service-b-request');

  var reqData = queryString.stringify(req.body);

  var options = {
    host: apiCNAME,

var http = XRay.captureHTTPs(require('http')); // Capture all HTTP/HTTPS calls

const express = require('express');
var bodyParser = require('body-parser');
var queryString = require('querystring');


// Constants
const PORT = 8080;
const apiCNAME = process.env.API_CNAME || 'localhost';

// App
const app = express();

XRay.config([XRay.plugins.EC2Plugin, XRay.plugins.ECSPlugin]);
XRay.middleware.enableDynamicNaming();

app.use(bodyParser.urlencoded({extended: false}));

// Start capturing the calls in the application
app.use(XRay.express.openSegment('service-a'));

app.get('/health', function(req, res) {
  res.status(200).send("Healthy");
});

app.get('/', function(req, res) {
  var seg = XRay.getSegment();
  seg.addAnnotation('service', 'service-b-request');

  var reqData = queryString.stringify(req.body);

// express or implied. See the License for the specific language governing
// permissions and limitations under the License.

var XRay = require('aws-xray-sdk');
var AWS = XRay.captureAWS(require('aws-sdk'));

const express = require('express');

// Constants
const PORT = 8080;

// App
const app = express();

XRay.config([XRay.plugins.EC2Plugin, XRay.plugins.ECSPlugin]);
XRay.middleware.enableDynamicNaming();

app.use(XRay.express.openSegment('service-b'));

function randomIntInc(low, high) {
  return Math.floor(Math.random() * (high - low + 1) + low);
}

function sleep(callback) {
  var now = new Date().getTime();
  while (new Date().getTime() < now + randomIntInc(0, 1000)) { /* */ }
  callback();
}

app.get('/health', function(req, res) {
  res.status(200).send("Healthy");
});

var express     = require('express');        // call express
var app         = express();                 // define our app using express
var bodyParser  = require('body-parser');
var mathsolver  = require("./mathsolver.js");
var xray        = require('aws-xray-sdk');
var aws         = require('aws-sdk');

var serviceName = "POSTFIX";
var servicePort = 9090;

// Initializes X-Ray
xray.middleware.setSamplingRules('sampling-rules.json');

// Starts X-Ray Segment
app.use(xray.express.openSegment(serviceName));

var sqs = xray.captureAWSClient(new aws.SQS());

// configure app to use bodyParser()
// this will let us get the data from a POST
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

var port = process.env.PORT || servicePort;

var calcSQSQueue = process.env.CALC_SQS_QUEUE_URL

// ROUTES FOR OUR API

// express or implied. See the License for the specific language governing
// permissions and limitations under the License.

var XRay = require('aws-xray-sdk');
var AWS = XRay.captureAWS(require('aws-sdk'));

const express = require('express');

// Constants
const PORT = 8080;

// App
const app = express();

XRay.config([XRay.plugins.ECSPlugin]);
XRay.middleware.enableDynamicNaming();

app.use(XRay.express.openSegment('service-b'));

function randomIntInc(low, high) {
  return Math.floor(Math.random() * (high - low + 1) + low);
}

function sleep(callback) {
  var now = new Date().getTime();
  while (new Date().getTime() < now + randomIntInc(0, 1000)) { /* */ }
  callback();
}

app.get('/health', function(req, res) {
  res.status(200).send("Healthy");
});

var express     = require('express');
var app         = express();
var bodyParser  = require('body-parser');
var mathsolver  = require("./mathsolver.js");
var calcmetrics = require("./calcmetrics.js");
var xray        = require('aws-xray-sdk');
var querystring = require('querystring');
var shortid     = require('shortid');

var serviceName = "CALCULATOR";
var servicePort = 8080;

xray.middleware.setSamplingRules('sampling-rules.json');
var http = xray.captureHTTPs(require('http'));

app.use(xray.express.openSegment(serviceName));

// configure app to use bodyParser()
// this will let us get the data from a POST
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

var port = process.env.PORT || servicePort;

// ROUTES FOR OUR API
// =============================================================================
var router = express.Router();

// test route to make sure everything is working (accessed at GET http://localhost:8080/api)

module.exports.bind = function (app) {
  AWSXRay.enableManualMode()
  AWSXRay.setLogger(logger)
  AWSXRay.middleware.setSamplingRules('aws-xray.rules')
  AWSXRay.config([AWSXRay.plugins.ECSPlugin])
  app.use(AWSXRay.express.openSegment('pay_selfservice'))

  createNamespace(clsXrayConfig.nameSpaceName)

  app.get('/style-guide', (req, res) => response(req, res, 'style_guide'))

  // APPLY CORRELATION MIDDLEWARE
  app.use('*', correlationIdMiddleware, getRequestContext)

  app.use((req, res, next) => {
    const namespace = getNamespace(clsXrayConfig.nameSpaceName)
    namespace.bindEmitter(req)
    namespace.bindEmitter(res)
    namespace.run(() => {
      next()

exports.bind = function (app) {
  AWSXRay.enableManualMode()
  AWSXRay.setLogger(logger)
  AWSXRay.middleware.setSamplingRules('aws-xray.rules')
  AWSXRay.config([AWSXRay.plugins.ECSPlugin])
  app.use(AWSXRay.express.openSegment('pay_frontend'))

  createNamespace(clsXrayConfig.nameSpaceName)

  app.use((req, res, next) => {
    const namespace = getNamespace(clsXrayConfig.nameSpaceName)
    namespace.bindEmitter(req)
    namespace.bindEmitter(res)
    namespace.run(() => {
      next()
    })
  })

  app.get('/healthcheck', healthcheck)

var XRay = require('aws-xray-sdk');

XRay.middleware.setSamplingRules('sampling-rules.json');
//XRay.middleware.enableDynamicNaming();
var http = XRay.captureHTTPs(require('http'));

String.prototype.isNumeric = function() {
    return !isNaN(parseFloat(this)) && isFinite(this);
}

Array.prototype.clean = function() {
    for(var i = 0; i < this.length; i++) {
        if(this[i] === "") {
            this.splice(i, 1);
        }
    }
    return this;
}