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<?php |
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namespace SfCod\SocketIoBundle\Service; |
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use Predis\Connection\ConnectionException; |
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use Symfony\Component\Console\Style\SymfonyStyle; |
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use Symfony\Component\Process\Process; |
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/** |
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* Class Worker |
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* |
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* @author Virchenko Maksim <[email protected]> |
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* |
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* @package SfCod\SocketIoBundle\Service |
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*/ |
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class Worker |
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{ |
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/** |
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* @var EventManager |
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*/ |
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private $eventManager; |
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/** |
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* @var RedisDriver |
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*/ |
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private $redisDriver; |
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/** |
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* @var Broadcast |
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*/ |
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private $broadcast; |
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/** |
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* @var string |
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*/ |
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private $logDir; |
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/** |
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* Worker constructor. |
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* |
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* @param EventManager $eventManager |
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* @param RedisDriver $redisDriver |
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* @param Broadcast $broadcast |
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* @param string $logDir |
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*/ |
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public function __construct(EventManager $eventManager, RedisDriver $redisDriver, Broadcast $broadcast, string $logDir) |
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{ |
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$this->eventManager = $eventManager; |
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$this->redisDriver = $redisDriver; |
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$this->broadcast = $broadcast; |
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$this->logDir = $logDir; |
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} |
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/** |
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* Get node js process |
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* |
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* @param string $server |
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* @param string $ssl |
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* |
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* @return Process |
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*/ |
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public function nodeJs(string $server, string $ssl = ''): Process |
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{ |
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$cmd = sprintf('node %s/%s', realpath(dirname(__FILE__) . '/../Server'), 'index.js'); |
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$connection = json_encode(array_filter([ |
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'host' => $this->redisDriver->getHost(), |
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'port' => $this->redisDriver->getPort(), |
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'password' => $this->redisDriver->getPassword(), |
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])); |
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$args = array_filter([ |
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'server' => $server, |
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'pub' => $connection, |
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'sub' => $connection, |
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'channels' => implode(',', $this->broadcast->channels()), |
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'nsp' => getenv('SOCKET_IO_NSP'), |
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'ssl' => empty($ssl) ? null : $ssl, |
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'runtime' => $this->logDir, |
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], 'strlen'); |
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foreach ($args as $key => $value) { |
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$cmd .= ' -' . $key . '=\'' . $value . '\''; |
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} |
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$process = new Process($cmd); |
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return $process; |
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} |
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/** |
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* Start predis |
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*/ |
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public function predis(SymfonyStyle $io) |
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{ |
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$pubSubLoop = function () use ($io) { |
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/** @var \Predis\Client $client */ |
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$client = $this->redisDriver->getClient(true); |
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// Initialize a new pubsub consumer. |
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$pubSub = $client->pubSubLoop(); |
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$channels = []; |
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foreach ($this->broadcast->channels() as $key => $channel) { |
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$channels[$key] = $channel . '.io'; |
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} |
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// Subscribe to your channels |
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$pubSub->subscribe(array_merge(['control_channel'], $channels)); |
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// Start processing the pubsup messages. Open a terminal and use redis-cli |
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// to push messages to the channels. Examples: |
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// ./redis-cli PUBLISH notifications "this is a test" |
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// ./redis-cli PUBLISH control_channel quit_loop |
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foreach ($pubSub as $message) { |
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switch ($message->kind) { |
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case 'subscribe': |
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$io->success("Subscribed to {$message->channel}"); |
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break; |
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case 'message': |
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if ('control_channel' == $message->channel) { |
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if ('quit_loop' == $message->payload) { |
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$io->success("Aborting pubsub loop...\n"); |
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$pubSub->unsubscribe(); |
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} else { |
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$io->success("Received an unrecognized command: {$message->payload}\n"); |
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} |
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} else { |
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$payload = json_decode($message->payload, true); |
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$data = $payload['data'] ?? []; |
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$this->broadcast->on($payload['name'], $data); |
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} |
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break; |
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} |
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} |
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// Always unset the pubsub consumer instance when you are done! The |
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// class destructor will take care of cleanups and prevent protocol |
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// desynchronizations between the client and the server. |
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unset($pubSub); |
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}; |
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// Auto recconnect on redis timeout |
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try { |
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$pubSubLoop(); |
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} catch (ConnectionException $e) { |
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$pubSubLoop(); |
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} |
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} |
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} |
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sfcod /
socketio
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: