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<?php |
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declare(strict_types=1); |
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/** |
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* Author: panosru |
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* Date: 27/04/2018 |
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* Time: 11:20 |
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*/ |
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namespace Omega\FaultManager\Traits; |
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use Hoa\Event\Bucket; |
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use Hoa\Event\Event; |
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use Omega\FaultManager\Exceptions\EventHandlerAlreadyExists; |
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use Omega\FaultManager\Interfaces\FaultManagerEventHandler as IFaultManagerEventHandler; |
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/** |
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* Trait FaultEventStream |
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* @package Omega\FaultManager\Traits |
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*/ |
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trait FaultEventStream |
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{ |
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/** @var string */ |
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private static $eventStreamId = 'hoa://Event/Exception'; |
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/** @var bool */ |
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private static $eventStreamEnabled = false; |
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/** @var array */ |
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private static $handlers = []; |
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/** @var string */ |
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private static $eventStreamHandlerClosure; |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function enableEventStream(): void |
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{ |
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if (!self::isEventStreamEnabled()) { |
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self::$eventStreamEnabled = true; |
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if (!Event::getEvent(self::$eventStreamId)->isListened()) { |
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Event::getEvent(self::$eventStreamId)->attach(self::eventStreamHandler()); |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function disableEventStream(): void |
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{ |
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if (self::isEventStreamEnabled()) { |
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self::$eventStreamEnabled = false; |
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if (Event::getEvent(self::$eventStreamId)->isListened()) { |
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Event::unregister(self::$eventStreamId, true); |
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self::$eventStreamHandlerClosure = null; |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function isEventStreamEnabled(): bool |
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{ |
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return self::$eventStreamEnabled; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function registerHandler( |
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string $eventId, |
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IFaultManagerEventHandler $handler, |
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bool $override = false |
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): void { |
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if (\array_key_exists($eventId, self::$handlers) && !$override) { |
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throw new EventHandlerAlreadyExists($eventId); |
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} |
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self::$handlers[$eventId] = $handler; |
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} |
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/** |
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* @param string $eventId |
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*/ |
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public static function unregisterHandler(string $eventId): void |
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{ |
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if (isset(self::$handlers[$eventId])) { |
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unset(self::$handlers[$eventId]); |
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} |
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} |
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/** |
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* @param \Hoa\Event\Source $router |
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* @param \Throwable $exception |
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* @throws \Hoa\Event\Exception |
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*/ |
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protected static function registerEvent(\Hoa\Event\Source $router, \Throwable $exception): void |
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{ |
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if (!Event::eventExists(self::$eventStreamId)) { |
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// @codeCoverageIgnoreStart |
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Event::register(self::$eventStreamId, $router); |
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// @codeCoverageIgnoreEnd |
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} |
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Event::notify( |
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self::$eventStreamId, |
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$router, |
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new Bucket($exception) |
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); |
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} |
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/** |
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* @return \Closure |
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*/ |
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private static function eventStreamHandler(): \Closure |
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{ |
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if (null === self::$eventStreamHandlerClosure) { |
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$handlers = &self::$handlers; |
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self::$eventStreamHandlerClosure = function (Bucket $bucket) use (&$handlers) { |
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/** @var \Hoa\Exception\Exception $exception */ |
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$exception = $bucket->getData(); |
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// Execute handler for the particular exception |
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if (isset($handlers[\get_class($exception)])) { |
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$handlers[\get_class($exception)]($exception); |
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} |
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// Execute global handler if exists |
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if (isset($handlers[\Omega\FaultManager\Fault::ALL_EVENTS])) { |
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$handlers[\Omega\FaultManager\Fault::ALL_EVENTS]($exception); |
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} |
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}; |
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} |
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return self::$eventStreamHandlerClosure; |
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} |
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} |
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