php-engine-skeleton
Dockerized PHP skeleton for Event Engine
Installation
Please make sure you have installed Docker and Docker Compose.
$ docker run --rm -it -v $(pwd):/app prooph/composer:7.2 create-project event-engine/php-engine-skeleton <your_project_name>
$ cd <your_project_name>
$ sudo chown $(id -u -n):$(id -g -n) . -R
$ docker-compose up -d
$ docker-compose run php php scripts/create_event_stream.php
Head over to http://localhost:8080
to check if the containers are up and running.
You should see a "It works" message.
Customization
Replace MyService
in all files to your appropriate service namespace.
@TODO: add functional and oop flavour branches
Tutorial
https://event-engine.io/php-tutorial/
Database
The skeleton uses a single Postgres database for both write and read model.
You can connect to the Postgres DB using following credentials (listed also in app.env
):
PDO_DSN=pgsql:host=postgres port=5432 dbname=event_engine
PDO_USER=postgres
PDO_PWD=
Note: The DB runs insight a docker container. Use localhost
as host name if you want to connect from your host system!
RabbitMQ
The skeleton uses RabbitMQ as a message broker with a preconfigured exchange called ui-exchange
and a corresponding
queue called ui-queue
. You can open the Rabbit Mgmt UI in the browser: http://localhost:8081
and login with user: prooph
and password: prooph
.
The skeleton also contains a demo JS client which connects to a websocket and consumes messages from the ui-queue
.
Open http://localhost:8080/ws.html
in your browser and forward events on the queue with $eventEngine->on(Event::MY_EVENT, UiExchange::class)
.
Check src/Domain/Api/Listener
for an example.
Unit and Integration Tests
We've prepared a BaseTestCase
located in tests
. Extend your test cases from that class to get access to some very useful test helpers.
Check the tutorial for a detailed explanation.
You can run the tests using docker:
docker-compose run php php vendor/bin/phpunit
Troubleshooting
With the command docker-compose ps
you can list the running containers. This should look like the following list:
Name Command State Ports
---------------------------------------------------------------------------------------------------------------------------------------------------
eebuildings_event_engine_projection_1 docker-php-entrypoint php ... Up
eebuildings_nginx_1 nginx -g daemon off; Up 0.0.0.0:443->443/tcp, 0.0.0.0:8080->80/tcp
eebuildings_php_1 docker-php-entrypoint php-fpm Up 9000/tcp
eebuildings_postgres_1 docker-entrypoint.sh postgres Up 0.0.0.0:5432->5432/tcp
eebuildings_rabbit_1 docker-entrypoint.sh rabbi ... Up 0.0.0.0:8081->15671/tcp, 15672/tcp,
0.0.0.0:15691->15691/tcp, 25672/tcp, 4369/tcp, 5671/tcp,
5672/tcp
Make sure that all required ports are available on your machine. If not you can modify port mapping in the docker-compose.yml
.
Have you tried turning it off and on again?
If something does not work as expected try to restart the containers first:
$ docker-compose down
$ docker-compose up -d
Projection reset
The Event Engine Skeleton uses a single projection process (read more about prooph projections in the prooph docs).
You can register your own projections in event engine which are all handled by the one background process that is started automatically
with the script bin/event_engine_projection.php
. Also see docker-compose.yml
.
The projection container is not activated by default. Uncomment it in the docker-compose.yml
to make use of it.
Docker is configured to restart the projection container in case of a failure. In dev mode, the projection process dies from time to time to catch up with your latest code changes.
If you recognize that your read models are not up-to-date or you need to reset the read model you can use this command:
$ docker-compose run php php bin/reset.php
If you still have trouble try a step by step approach:
$ docker-compose stop event_engine_projection
$ docker-compose run php php bin/reset.php
$ docker-compose up -d
You can also check the projection log with:
$ docker-compose logs -f event_engine_projection
Swagger UI is not updated
When you add new commands or queries in Event Engine the Swagger UI will not automatically reread the schema from the backend.
Simply reload the UI or press Explore
button.
Batteries Included
You know the headline from Docker, right? The Event Engine skeleton follows the same principle. It ships with a default set up so that you can start without messing around with configuration and such. The default set up is likely not what you want to use in production. The skeleton can be and should be adapted.
Focus of the skeleton is to provide an easy to use development environment, hence it uses default settings of Postgres and RabbitMQ containers. Make sure to secure the containers before you deploy them anywhere! You should build and use your own docker containers in production anyway. And if you cannot or don't want to use Docker then provide the needed infrastructure the way you prefer and just point Event Engine to it by adjusting configuration.
Powered by prooph software
Event Engine is maintained by the prooph software team. The source code of Event Engine is open sourced along with an API documentation and a getting started demo. Prooph software offers commercial support and workshops for Event Engine as well as for the prooph components.
If you are interested in this offer or need project support please get in touch.