Hexagonal Architecture

Transcript

1. HEXAGONAL ARCHITECTURE Victor "Frodo" Martinez June, 2022 Photo by Marcel Strauß
2. • INTRODUCTION AND THEORETICAL BACKGROUND (20min) • SHOW ME THE CODE (20min) • QUESTIONS (5min) TOTAL = 45min AGENDA
3. ! DISCLAIMER
4. WHY ?
5. ONCE UPON A TIME… Photo by Brian McGowan
6. THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
7. THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
8. LOGIC THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
9. LOGIC THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
10. LOGIC FLASK CLI THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
11. LOGIC FLASK CLI THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
12. LOGIC FLASK CLI THE NEW SUPER-SECRET MEGA BLAST DISRUPTIVE INNOVATIVE DATA-DRIVEN PROJECT
13. LOGIC FLASK CLI PROBLEMS
14. LOGIC FLASK CLI PROBLEMS TECHNOLOGY-DRIVEN LACK OF DOMAIN COUPLED TO TECHNOLOGY HARD TO CHANGE
15. MEDICAL ANNECDOTE
16. YOUR PROJECT IS NOT THE UNDERLYING TECHNOLOGY.
17. TECHNICAL COMPLEXITY VS BUSINESS COMPLEXITY
18. TECHNICAL COMPLEXITY DATABASE PERSISTENCE QUEUE PUBLISHING FILE STORAGE CACHE API
19. BUSINESS COMPLEXITY ESTIMATED DELIVERY TIME GENERATE CONTRACT ORDER A PRODUCT CALC TAXES
20. HEXAGONAL ARCHITECTURE
21. HEXAGONAL ARCHITECTURE Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases. Alistair Cockburn 2005, Ports and Adapters
22. HEXAGONAL ARCHITECTURE Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases. Alistair Cockburn 2005, Ports and Adapters Hexagonal Architecture OR Hexagonal Design?
23. "Atividades relacionadas a arquitetura de software são sempre de design. Entretanto, nem todas atividade de design são sobre arquitetura. O objetivo primário da arquitetura de software é garantir que os atributos de qualidade, restrições de alto nível e os objetivos do negócio, sejam atendidos pelo sistema. Qualquer decisão de design que não tenha relação com este objetivo não é arquitetural. Todas as decisões de design para um componente que não sejam “visíveis” fora dele, geralmente, também não são."- Elemar Jr. https://eximia.co/quais-sao-as-diferencas-entre-arquitetura-e-design-de-software/
24. LET'S DIVE INTO PORTS & ADAPTERS Photo by Brina Blum
25. LET'S DIVE INTO PORTS & ADAPTERS Photo by Brina Blum INTERFACES & IMPLEMENTATIONS
26. LET'S DIVE INTO PORTS & ADAPTERS Photo by Brina Blum PORT ADAPTER INTERFACES & IMPLEMENTATIONS
27. LET'S DIVE INTO PORTS & ADAPTERS
28. LET'S DIVE INTO PORTS & ADAPTERS INTERFACES & IMPLEMENTATIONS
29. LET'S DIVE INTO PORTS & ADAPTERS INTERFACES & IMPLEMENTATIONS SOLID
30. LET'S DIVE INTO PORTS & ADAPTERS INTERFACES & IMPLEMENTATIONS SOLID DEPENDENCY INVERSION PRINCIPLE
31. DEPENDENCY INVERSION PRINCIPLE "High level modules should not depend on low level modules; both should depend on abstractions. Abstractions should not depend on details. Details should depend upon abstractions."
32. DEPENDENCY INVERSION PRINCIPLE "High level modules should not depend on low level modules; both should depend on abstractions. Abstractions should not depend on details. Details should depend upon abstractions." DEPEND ON ABSTRACTIONS, NOT DETAILS.
33. DEPENDENCY INVERSION PRINCIPLE PORT: DATABASE
34. DEPENDENCY INVERSION PRINCIPLE ADAPTER: DATABASE
35. DEPENDENCY INVERSION PRINCIPLE PORT: CONTROLLER
36. DEPENDENCY INVERSION PRINCIPLE ADAPTER: CONTROLLER
37. ANATOMY
38. DOMAIN PORT PORT PORT PORT PORT PORT ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER API DATABASE MESSAGE BROKER AUTH UI NOTIFICATION ANATOMY
39. CREATE CONTRACT ANATOMY
40. CREATE CONTRACT DATA PORT ANATOMY
41. CREATE CONTRACT DATA PORT ADAPTER REST API ANATOMY
42. CREATE CONTRACT DATA PORT ADAPTER REST API DB PORT ANATOMY
43. CREATE CONTRACT DATA PORT ADAPTER REST API DB PORT ADAPTER POSTGRES DATABASE ANATOMY
44. CREATE CONTRACT DATA PORT ADAPTER REST API DB PORT ADAPTER POSTGRES DATABASE STORAGE PORT ANATOMY
45. CREATE CONTRACT DATA PORT ADAPTER REST API DB PORT ADAPTER POSTGRES DATABASE STORAGE PORT ADAPTER S3 STORAGE ANATOMY
46. ANATOMY
47. INPUT ANATOMY
48. INPUT PROCESSING ANATOMY
49. INPUT PROCESSING OUTPUT OUTPUT ANATOMY
50. ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER INPUT ADAPTERS OUTPUT ADAPTERS
51. DOMAIN PORT PORT PORT PORT PORT PORT ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER ADAPTER API DATABASE MESSAGE BROKER AUTH UI NOTIFICATION WHAT IF WE NEED TO CHANGE THE ADAPTER?
52. WHAT IF WE NEED TO CHANGE THE ADAPTER? DOMAIN PORT PORT PORT PORT PORT PORT A A A A A FLASK POSTGRES RABBITMQ … SNS A PUBSUB A SQS A REDIS A MONGODB A FIREBASE A A FALCON APPLE A HUG A A A A A … … … … …
53. IT'S ALL ABOUT S O L I D Figure: Pereira, Matheus. "Capitals of classical antiquity: Understand the difference between the 5 orders" ArchDaily, May 2018, www.archdaily.com/892595/capitals-of-classical-antiquity-understand-the-difference-between-the-5-orders. Accessed 1 June, 2022.
54. "TALK IS CHEAP. SHOW ME THE CODE." - LINUS TORVALDS https://github.com/victormartinez/ flask-hexagonal