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SymfonyWorld Winter Edition 2021

This project is a demo from the presentation of Hugo Monteiro at SymfonyWorld Winter edition 2021:

"Decoupling your application using Symfony Messenger and events"

Setup the application

composer install

bin/console doctrine:migrations:migrate
bin/console doctrine:fixtures:load

// create a customer, car and reservation and cancel it
bin/console app:rentcar:simulation -vvv

// get domain events from the database (from the stored_event table) and push to the transport (outbox) - infinite loop
bin/console app:domain:events:publish -vvv

// consume domain events in another handler using the transport
bin/console messenger:consume async

Note: The transport configured is the doctrine one, so the sqlite database will be used by default.

Run unit tests

bin/phpunit -c phpunit.xml.dist

What should you expect?

  • Domain events in a table "stored_event" after executing the "simulation" command
  • Aggregate roots in their tables (e.g. customer, reservation, etc)
  • Worker that sends the domain events from the database to the transport configured
  • Use Symfony Messenger consume command to consume domain events published

Work in progress

  • API with all the handler actions and API tests
  • Create more tests to cover all invariants

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domain events application demo

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