EventRelayer.php

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<?php
use Psr\Log\LoggerInterface;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\NullLogger;
 
abstract class EventRelayer implements LoggerAwareInterface {
    protected $logger;
 
    public function __construct( array $params ) {
        $this->logger = new NullLogger();
    }
 
    final public function notify( $channel, $event ) {
        return $this->doNotify( $channel, [ $event ] );
    }
 
    final public function notifyMulti( $channel, $events ) {
        return $this->doNotify( $channel, $events );
    }
 
    public function setLogger( LoggerInterface $logger ) {
        $this->logger = $logger;
    }
 
    abstract protected function doNotify( $channel, array $events );
}