Sevilla Developer Conference

#SVQDC 2017.02.18

Pedro J. Molina@pmolinam

http://martinfowler.com/articles/microservices.html

“Las organizaciones que diseñan sistemas están limitadasa producir diseños que copian las estructuras de comunicación de esas organizaciones”.

Melvin Conway, 1968

application/json text/xml text/html text/plain text/csv

GET /actors/42Accept: text/xml

200 OKContent-Type: text/xml

<actor id="42"><name>Jessica</name><lastname>Alba</lastname><filmography

url= "/films/42" /></actor>

GET /actors/42Accept: application/json

200 OKContent-Type: application/json

{ "id": 42"name": "Jessica""lastname": "Alba""filmography": "/films/42"

}

GET /factura/217

POST /factura/ 201 Created

<link rel=“lineas”

uri=“/factura/217/lineas” />

{

“id”: 1234

“name”: “Alice in Wonderland”

“_links”: {

“self”: { “href”: “/book/10”},

“prev”: { “href”: “/book/9”},

“next”: { “href”: “/book/11”},

“action-delete”: {

“verb”: “DELETE”,

“href”: “/book/10”

}

}

}

Dev

Local:27001

Local:5000

-

Navegador

Nube

db:27001

app:80

-

Navegador

Producción

cluster:27001

app :80

-

Navegador

lb: 443

https://sevilladevelopers2.herokuapp.com/

Client ExpressJS BaucisJS Mongoose MongoDB

HTTP req

resourcequery/command

data

401 | 403

AuthN/AuthZ middleware

<req.user, res>

Microservice

var express = require('express');var app = express();

app.get('/hello', function(req, res) {res.status(200).send('hello world');

});

/helloreq res

public class SampleModule : Nancy.NancyModule{

public SampleModule(){

Get["/hello"] = _ => “hello world";}

}

/helloreq res

exports.handler = function(event, context) {switch (event.operation) {

case 'ping': context.succeed('pong'); return;

case 'getSample':event.customArgs = ["rose:", "/tmp/rose.png"];im.convert(event.customArgs, function(err, output) {

if (err) context.fail(err);else {

var resultImgBase64 = new Buffer(fs.readFileSync("/tmp/rose.png")).toString('base64');

try { fs.unlinkSync("/tmp/rose.png");} catch (e) {}context.succeed(resultImgBase64);

}});break;

default:return context.fail(new Error('Unrecognized operation "' +

event.operation + '"'));}};

https://openapis.org/

connect-mongo

nginx haproxy, etc.

process.env.VAR1

git remote add heroku https://git.heroku.com/app1.git

/Procfile

git push heroku master

web: node app/server.js

db: image: dockerfile/mongodbports: - "27017"

app: build: . environment: NODE_ENV: productionPORT: 80 SERVICE_NAME: app

links: - "db:DB" ports: - "80"

lb: image: jasonwyatt/nginx-loadbalancerlinks: - appenvironment: APP_PATH: "/"

ports: - "80:80"

db

app

lb app

app

#0

#1

#2

80

80 27017

consul prometheus8500

8500autoregistro

8500autodescubre /metrics

/ping

@pmolinam