Hexagonal Architecture

Introduction to the Hexagonal Architecture

1. Hexagonal Architecture Jose Armesto
2. Who am I? fiunchinho jose@armesto.net
5. The Web
7. Programming Duplication Dependencies management
8. At the beginning
9. Connected model
10. Composition
11. Connected model
12. Object Oriented Design
13. Why do we need OOP? Better communication Modeling Separation of concerns Dependency management Extensibility
14. OOP mechanisms Message Passing Encapsulation Abstraction
15. Encapsulation
16. Encapsulation Put behaviour where data is Exposes what it does, hides how it does it
17. Abstraction
18. Abstraction Having no reference to material objects or specific examples; not concrete. Not applied or practical; theoretical - WordReference
19. Abstraction [1] http://www.artima.com/lejava/articles/designprinciplesP.html Program to an interface, not an implementation - Erich Gamma
20. Abstraction Coupled code Changes in ClassA, make changes in ClassB
21. Abstraction
22. Maintainable code is this enough?
23. Architecture
24. Architecture Controller View Model
25. Model - View - Controller
26. Separation of concerns
27. Tools
29. Tools
30. Coupled to Frameworks
31. Persistence
32. Data centric application
33. Decoupled business logic Domain Database
34. Decoupled business logic Domain Framework
35. Decoupled business logic Domain Tools
36. Separate your domain
37. Business logic Validations Calculations Calls to other systems Domain
38. Business logic "Classes representing your domain must be understandable by anyone, even though they are not familiar with your framework or database of choice" - Jose Armesto
39. The web is a detail "The Web is a delivery mechanism [...] Your system architecture should be as ignorant as possible about how it is to be delivered. You should be able to deliver it as a console app, or a web app, or even a web service app, without undue complication or change to the fundamental architecture" - Robert Martin
40. Business logic
41. Delivery Mechanism Request Response Delivery (CLI) Delivery (Web) Response Request
42. Ports and Adapters
43. Architecture
44. Entities User Message Photo
45. Architecture
46. Use cases
48. Architecture
49. Adapters
50. Let's try!
51. Use cases Use cases reminded me of something else…
52. Use Stories As a User I want to log in to the system So I can use it
54. Behavior Driven Development
55. Behavior Driven Development
56. Summary Independent of framework Expose the intent of your app Agnostic of tools Acceptance tests of your use cases
57. Summary
58. Resources http://confreaks.com/videos/759-rubymidwest2011-keynote- architecture-the-lost-years http://blog.8thlight.com/uncle-bob/2012/08/13/the-clean-architecture. html http://alistair.cockburn.us/Hexagonal+architecture
59. Jose Armesto @fiunchinho
60. Pictures http://www.unex.es/conoce-la-uex/estructura- academica/centros/epcc/archivos/imagenes/twitterbirdblueonwhite.png http://upload.wikimedia.org/wikipedia/de/5/57/Gmail-logo.jpg http://www.reactionface.info/sites/default/files/imagecache/Node_Page/images/28405225.jpg http://thisboyisonfire.files.wordpress.com/2013/06/cable-mess.jpg http://cdn.cpcstrategy.com/blog/wp-content/uploads/2012/07/ingredients.jpg http://www.threeriversinstitute.org/blog/wp-content/uploads/2009/08/connectedAndModularDesign.jpg http://www.seoconsult.com/blog-images/wp-content/uploads/2011/10/oop.jpg http://www.fasebonus.net/old/images/stories/2012/02/joystick%20cx-40.jpg http://www.mifondodepantallagratis.net/artistic/wallpapers/dali-elephants.jpg http://farm3.staticflickr.com/2678/4238610357_b746809d94_o.jpg http://farm3.staticflickr.com/2678/4238610357_b746809d94_o.jpg http://www.htmlgoodies.com/img/2010/11/mvc.png http://substack.net/images/separation_of_concerns.png http://manualburquerque.files.wordpress.com/2012/04/titiritero.jpg http://dmuela.com/blog/wp-content/uploads/2013/07/symfony-logo.png http://www.maltblue.com/wp-content/uploads/2012/12/ZF2-Logo.png http://www.antoniopol.es/wp-content/uploads/2013/04/laravel.jpg http://thesestonewalls.com/wp-content/uploads/2012/11/Hal.png http://blog.yannickmahe.com/symfony/2013/08/19/the-walking-dead.html http://us.123rf.com/400wm/400/400/antonbrand/antonbrand1204/antonbrand120400030/13295825-verde- lindo-zombies-de-dibujos-animados-aislado-en-blanco.jpg
61. Pictures http://cdn4.pedroventura.com/wp-content/uploads/2013/05/mysql_logo.png http://www.recipesforlinux.com/wp-content/uploads/2013/06/logo-mongodb-onwhite.png http://redis.io/images/redis-300dpi.png http://confreaks.com/videos/759-rubymidwest2011-keynote-architecture-the-lost-years http://addins.waow.com/blogs/weather/wp-content/uploads/2011/07/gold-panning.jpg http://www.clker.com/cliparts/7/2/a/6/11949889842140432868gold_coins_in_a_stack_jo_01.svg.med.png http://i.istockimg.com/file_thumbview_approve/3411362/2/stock-illustration-3411362-cartoon-professor- with-bushy-moustache.jpg http://www.codingthearchitecture.com/2011/11/06/the_delivery_mechanism_is_an_annoying_detail.html http://blog.mattwynne.net/wp-content/uploads/2012/06/hexagonal_architecture_sketch.jpg http://blog.8thlight.com/uncle-bob/2012/08/13/the-clean-architecture.html http://www.mformommy.com/wp-content/uploads/2012/06/expectation.jpg http://s7d5.scene7.com/is/image/Staples/s0356787_sc7?$splssku$ http://fc04.deviantart.net/fs71/f/2011/282/0/5/adventure_time_render_by_emoneygraphix-d4cbh8q.png http://yellower.se/wp-content/uploads/2011/12/note_post_it_desktop_2115x1871_wallpaper-80493.jpg http://nvartscouncil.com/wp-content/uploads/2013/04/thanks.jpg