Primary ports kata

• This kata is not about developing an hexagonal architecture
• The architecture is already delivered
• This kata is about experiencing the benefits of the architecture

Concepts

• Concepts as flash cards
• RSVP and flipped classroom
• Developed with Marp

Readings

• Original Blog post
• Best book about ports and adapters

Deliberate practice

Acoplamiento: ¿qué afecta a qué?

Implementar validación:

• afecta a puertos y adaptadores
• ver qué al refactorizarla no hay que cambiar test

Implementar nueva feature: la división

• no afecta adaptadores

Implementar autenticación web

• afecta solo a adaptador web

Features and architecture are decoupled

• evolve web adapter without developing new features
• develop new features
• check that automatically exposed throw ports, without adding new lines to adapters
• web framework only in one file, console framework only in one file

Easier end-to-end testing

• test logic without testing delivery mechanism
• test delivery mechanism without testing logic

More realistic example

• add error management
• add web auth
• add persistence repo (secondary port)