Two

tworequests.js

var nock = require('nock')
var http = require('http');
var request = require('request-promise');

nock('http://greetings_api:3000')
	.post('/getGreeting')
	.matchHeader('content-type', 'application/json')
	.matchHeader('language', 'es')
	.matchHeader('host', 'greetings_api:3000')
	.matchHeader('content-length', 0)
	.reply(200, 'Hola');

var greetingOptions = {
	uri: 'http://greetings_api:3000/getGreeting',
	hostname: 'greetings_api',
	method: 'POST',
	headers: {
			'Content-Type': 'application/json',
			'language': 'es'
	}
};

var greeting = {
	getGreeting: function() {
		return request(greetingOptions);
	}
}

function myGreeting() {
	return greeting.getGreeting();
};

nock('http://users_api:3000')
	.post('/getUser')
	.matchHeader('content-type', 'application/json')
	.matchHeader('id', 1)
	.matchHeader('host', 'users_api:3000')
	.matchHeader('content-length', 0)
	.reply(200, 'Jose Smith');

var userOptions = {
	uri: 'http://users_api:3000/getUser',
	hostname: 'users_api',
	method: 'POST',
	headers: {
			'Content-Type': 'application/json',
			'id': 1
	}
};

var user = {
	getUser: function() {
		return request(userOptions);
	}
}

function myUser() {
	return user.getUser();
}

async function getWelcome(req, res) {
	try {
	    const [user, greeting] = await Promise.all([
	      myUser(),
	      myGreeting()
	    ]);
	    res.send(greeting + ' ' + user);
	}
	catch(e) {
	      res.status(404).send();
	}
}

module.exports = { getWelcome };