Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Hexagonal Architecture
Search
Chris Fidao
May 16, 2014
Technology
49
200k
Hexagonal Architecture
An explanation on what Hexagonal Architecture is - the decoupling of layers in your code.
Chris Fidao
May 16, 2014
Tweet
Share
More Decks by Chris Fidao
See All by Chris Fidao
Development Environments that Feel Local
fideloper
0
49
Refactoring Terraform - CloudCasts - Scaling EC2
fideloper
0
76
Scaling Laravel - Laracon.net 2018
fideloper
15
1.9k
Linux Environment
fideloper
1
11k
Server Survival
fideloper
29
23k
FileBeat (Won't save you from the JVM)
fideloper
1
330
Powering Your Applications With Nginx
fideloper
9
7.7k
Intro to etcd
fideloper
3
580
Service Oriented Architecture with a little help from NodeJS
fideloper
4
2.3k
Other Decks in Technology
See All in Technology
AWS Summit Japan 2025 Community Stage - App workflow automation by AWS Step Functions
matsuihidetoshi
1
310
マーケットプレイス版Oracle WebCenter Content For OCI
oracle4engineer
PRO
3
940
「Chatwork」の認証基盤の移行とログ活用によるプロダクト改善
kubell_hr
1
240
asken AI勉強会(Android)
tadashi_sato
0
150
さくらのIaaS基盤のモニタリングとOpenTelemetry/OSC Hokkaido 2025
fujiwara3
2
280
Core Audio tapを使ったリアルタイム音声処理のお話
yuta0306
0
160
KubeCon + CloudNativeCon Japan 2025 Recap by CA
ponkio_o
PRO
0
260
OPENLOGI Company Profile for engineer
hr01
1
33k
生成AI時代 文字コードを学ぶ意義を見出せるか?
hrsued
1
750
2025-06-26_Lightning_Talk_for_Lightning_Talks
_hashimo2
2
120
LangChain Interrupt & LangChain Ambassadors meetingレポート
os1ma
2
230
FOSS4G 2025 KANSAI QGISで点群データをいろいろしてみた
kou_kita
0
300
Featured
See All Featured
Visualization
eitanlees
146
16k
Gamification - CAS2011
davidbonilla
81
5.3k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
500
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Docker and Python
trallard
44
3.5k
Embracing the Ebb and Flow
colly
86
4.7k
Become a Pro
speakerdeck
PRO
28
5.4k
Into the Great Unknown - MozCon
thekraken
39
1.9k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
20
1.3k
Navigating Team Friction
lara
187
15k
Rails Girls Zürich Keynote
gr2m
94
14k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Transcript
Hexagonal Architecture Chris Fidao (hek-sag-uh-nl)
@fideloper
None
Implementing Laravel Real-world implementation of testable and maintainable code. (hopefully)
Vaprobash Vagrant Provisioning Bash Scripts
Servers for Hackers.com
Why / What Ports / Adapters Boundary Layers /
WHY Architecture
Maintainability Technical Debt Time
What is it?
So…What is it?
The Hexagon Core Domain Application Domain Framework
(Core) Domain Core Domain Application Domain Framework
Behavior
Constraints
Application Core Domain Application Domain Framework
Framework Core Domain Application Domain Framework
Outside Core Domain Application Domain Framework
Ports Adapters /
Ports & Adapters Core Domain Application Domain Framework
Inside/Outside Core Domain Application Domain CommandBus Framework HTTP Use Case
Repo DBAL Database Events Dispatcher Service Impl
Core Domain Application Domain Framework Dependencies
interface Notifier { ! public function send(Message $message); } class
SesNotifier implements Notifier { ! public function send(Message $message) { // Details } }
Use-Case Driven Development
All the Contexts •Web •API •CLI •Queue •Event Handler
Use Cases: CommandBus CommandBus executes( ) Command Handler handles( )
Command
// Class SimpleCommandBus ! public function execute( $command ) {
return $this->getHandler( $command ) ->handle( $command ); } Simple CommandBus
Core Domain Application Domain CommandBus Framework HTTP Use Case Repo
DBAL Database Events Dispatcher Service Impl
None
Boundaries
Domain/Application Boundary Core Domain Application Domain Framework Use Case Repo
Events
interface CommandBusInterface { ! public function execute( $command ); }
interface HandlerInterface { ! public function handle( $command ); }
Core Domain Application Domain Framework Use Case Repo Events
interface TicketRepositoryInterface { ! public function getStaffOpenTickets( Staffer $staffer, $limit=10);
! ! public function save(Ticket $model); }
Application Domain CommandBus Framework DBAL Dispatcher The Application/External Boundary
interface Notifier { ! public function send(Message $message); } interface
Validator { ! public function passes(Array $data); ! public function getErrors(); } interface Dispatcher { ! public function dispatch(Array $events); }
Framework Core Domain Application Domain Framework HTTP Database Service Impl
Identify the aspects that vary and separate them from what
stays the same
Layers
The Domain Core Domain Application Domain Framework Use Case Repo
Events
<?php namespace Hex\Tickets; ! class Ticket extends Model { !
public function assignStaffer(Staffer $staffer) { if( ! $staffer->categories->contains( $this->category ) ) { throw new DomainException("Staffer can't be assigned to ".$this->category); } ! $this->staffer()->associate($staffer); // Set Relationship ! return $this; } ! public function setCategory(Category $category) { if( $this->staffer instanceof Staffer && ! $this->staffer->categories->contains( $category ) ) { // Unset staffer if can't be assigned to set category $this->staffer = null; } ! $this->category()->associate($category); // Set Relationship ! return $this; } }
class Ticket extends Model { ! /* ... Other logic
... */ ! public function save(array $options = array()) { /* Integrity Checks, and then: */ ! if( ! $this->exists ) { $this->raise( new TicketCreatedEvent($this) ); } ! return parent::save($options); } }
class CreateTicketCommand { ! protected $data; ! public function __construct($data)
{ $this->data = $data; } ! public function __get($property) { // Simplified example return $this->data[$property]; } }
The Application Application Domain CommandBus Framework DBAL Dispatcher
// Class SimpleCommandBus ! public function execute( $command ) {
return $this->getHandler( $command ) ->handle( $command ); }
! class CreateTicketHandler implements HandlerInterface { ! ! public function
handle($command) { $this->validate($command); // Throw ValidationException $this->save($command); } ! protected function save($command) { $ticket = new Ticket; /* Some other setters... */ $ticket->setCategory( $this->catRepo->find($command->category_id) ); $ticket->setStaffer( $this->staffRepo->find($command->staffer_id) ); $ticket->addMessage( $ticket->addMessage($command->message); ); ! $this->ticketRepo->save($ticket); // Use Repositories ! $this->dispatcher->dispatch( $ticket->flushEvents() ); // Fire Events } }
class DbTicketRepository implements RepositoryInterface { ! public function getStaffOpenTickets(Staffer $staffer,
$limit=10) { return $this->ticket->where('staff_id', $staffer->id) ->take($limit)->get(); } ! public function save(Ticket $ticket) { $ticket->save(); } }
Framework Core Domain Application Domain Framework HTTP Database Service Impl
class TicketController extends BaseController { ! public function createTicket() {
$command = new CreateTicketCommand( Input::all() ); ! try { $this->bus->execute($command); } catch(ValidationException $e) { return Redirect::to('/tickets/new') ->withErrors( $e->getErrors() ); } catch(DomainException $e) { return Redirect::to('/tickets/new') ->withErrors( $e->getErrors() ); } return Redirect::to(‘/tickets'); } }
class SesEmailNotifier implements NotifierInterface { ! public function __construct(SesClient $client)
{ $this->client = $client; } ! public function send(Message $message) { $to = [$message->to()]; $message = ['Data' => $message->message()]; ! $this->client->sendEmail([ 'Destination' => ['ToAddresses' => $to], 'Message' => ['Body' => ['Html' => $message]] ]); } }
use Illuminate\Events\Dispatcher as EventDispatcher; ! class LaravelDispatcher implements Dispatcher {
! public function __construct(EventDispatcher $dispatcher) { $this->dispatcher = $dispatcher; } ! public function dispatch(Array $events) { foreach( $events as $event ) { $this->dispatcher->fire( $event->name(), $event ); } } ! }
TDD is DEAD (and other myths)
Identify the aspects that vary and separate them from what
stays the same
Thanks