/**
* Add an event to this dispatcher, only if it is not existing.
*
* @param EventInterface $event The event.
*
* @return Dispatcher This method is chainable.
*
* @since 2.0
*/
public function addEvent(EventInterface $event)
{
if (!isset($this->events[$event->getName()])) {
$this->events[$event->getName()] = $event;
}
return $this;
}
/**
* {@inheritdoc}
*/
public function handle(EventInterface $event)
{
$name = $event->getName();
$emitter = $event->getEmitter();
$emitter->removeListener($name, $this->listener);
return call_user_func_array([$this->listener, 'handle'], func_get_args());
}
/**
* Notifies registered for that event callback function
*
* @param Event $event
*/
public function dispatch(EventInterface $event)
{
$eventName = $event->getName();
foreach ($this->getListeners($eventName) as $listener) {
call_user_func($listener, $event);
}
}
/**
* Handle an event
*
* @param EventInterface $event an event
* @param string $name the event name
*
* @throws Exception
* @return void
*/
public function handleEvent($event, $name = null)
{
// this is used to stay compatible with Symfony 2.3
if (is_null($name)) {
$name = $event->getName();
}
if (!isset($this->listenedEvents[$name])) {
return;
}
$config = $this->listenedEvents[$name];
$immediateSend = false;
$tags = $this->mergeTags($event, $config);
// replace placeholders in tags
$tags = array_map(function ($tag) use($event, $name) {
return $this->replaceConfigPlaceholder($event, $name, $tag);
}, $tags);
foreach ($config as $conf => $confValue) {
// increment
if ('increment' === $conf) {
$this->increment($this->replaceConfigPlaceholder($event, $name, $confValue), 1, $tags);
} elseif ('count' === $conf) {
$value = $this->getEventValue($event, 'getValue');
$this->count($this->replaceConfigPlaceholder($event, $name, $confValue), $value, 1, $tags);
} elseif ('gauge' === $conf) {
$value = $this->getEventValue($event, 'getValue');
$this->gauge($this->replaceConfigPlaceholder($event, $name, $confValue), $value, 1, $tags);
} elseif ('set' === $conf) {
$value = $this->getEventValue($event, 'getValue');
$this->set($this->replaceConfigPlaceholder($event, $name, $confValue), $value, 1, $tags);
} elseif ('timing' === $conf) {
$this->addTiming($event, 'getTiming', $this->replaceConfigPlaceholder($event, $name, $confValue), $tags);
} elseif ('custom_timing' === $conf and is_array($confValue)) {
$this->addTiming($event, $confValue['method'], $this->replaceConfigPlaceholder($event, $name, $confValue['node']), $tags);
} elseif ('immediate_send' === $conf) {
$immediateSend = $confValue;
} elseif ('tags' === $conf) {
// nothing
} else {
throw new Exception("configuration : " . $conf . " not handled by the StatsdBundle or its value is in a wrong format.");
}
}
if (null !== $this->toSendLimit && $this->getToSend()->count() >= $this->toSendLimit) {
$immediateSend = true;
}
if ($immediateSend) {
$this->send();
}
}
public function filter(EventInterface $event, $value)
{
foreach ($this->getListeners($event->getName()) as $listener) {
$value = call_user_func($listener, $event, $value);
}
return $value;
}
/**
* @param EventInterface $event The event instance.
*/
public function __construct(EventInterface $event)
{
$this->event = $event;
parent::__construct(sprintf('Exception in event "%s".', $event->getName()));
}
/**
* @param ChannelInterface $channel
* @param EventInterface $event
*
* @return array
*/
public function format(ChannelInterface $channel, EventInterface $event)
{
return ['channel' => ['id' => $channel->getId()], 'event' => ['name' => $event->getName(), 'metadata' => $event->getMetadata(), 'data' => $event->getData(), 'tag' => $event->getTag()]];
}
