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Informations about the package flow-eventbroker

Event Broker

A simple event dispatching library for TYPO3 Flow.

Installation

The package is available on Packagist. Use the following setup in your composer manifest:

{
    "require": {
        "helmich/flow-eventbroker": "*"
    }
}

Examples

Publishing events

Events are regular methods that are tagged with an @Event\Event annotation:

<?php
namespace My\Example;

use Helmich\EventBroker\Annotations as Event;

class Emitter {
    public function doSomething() {
        // ...
        $this->publishSomeEvent(new SomeEvent("foo"));
    }

    /**
     * @Event\Event
     */
    protected function publishSomeEvent(SomeEvent $event) {

    }
}

Subscribing to events

Listeners are also regular methods, that are tagged with an @Event\Listener annotation. The event class to listen for is specified as parameter within the annotation.

<?php
namespace My\Example;

use Helmich\EventBroker\Annotations as Event;

class Listener {
    /**
     * @Event\Listener("My\Example\SomeEvent")
     */
    public function myListener(SomeEvent $event) {

    }
}

Synchronous and asynchronous events

By defaults, listeners will be called asynchronously. In the default implementation, events will be queued and dispatched in an event loop at the end of the main application run (other, later implementations might do this completely asynchronously by dispatching events to another process).

You can explicitly declare listeners to be processed synchronously (when the event is published) by using the "sync" tag in the @Event\Listener annotation:

<?php
namespace My\Example;

use Helmich\EventBroker\Annotations as Event;

class Listener {

    /**
     * @Event\Listener("My\Example\SomeEvent", sync=TRUE)
     */
    public function myListener(SomeEvent $event) { }
}

To-Do

All versions of flow-eventbroker with dependencies

PHP Build Version
Package Version
Requires typo3/flow Version *
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