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<?php |
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namespace PEIP\Gateway; |
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/* |
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* This file is part of the PEIP package. |
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* (c) 2009-2016 Timo Michna <timomichna/yahoo.de> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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/* |
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* SimpleMessagingGateway |
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* Basic implementation of a messaging gateway |
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* |
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* @author Timo Michna <timomichna/yahoo.de> |
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* @package PEIP |
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* @subpackage gateway |
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* @implements \PEIP\INF\Gateway\MessagingGateway, \PEIP\INF\Message\MessageBuilder |
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*/ |
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use PEIP\Message\MessageBuilder; |
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class SimpleMessagingGateway implements |
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\PEIP\INF\Gateway\MessagingGateway, |
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\PEIP\INF\Message\MessageBuilder |
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{ |
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protected $requestChannel, |
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$replyChannel, |
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$messageClass = '\PEIP\Message\GenericMessage', |
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$defaultHeaders, |
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$messageBuilder; |
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/** |
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* constructor. |
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* |
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* @param \PEIP\INF\Channel\Channel $requestChannel The default channel to send requests from the gateway |
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* @param \PEIP\INF\Channel\PollableChannel $replyChannel The default channel to receive requests from the gateway |
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* @param array $defaultHeaders The default headers to apply to request messages |
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*/ |
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public function __construct(\PEIP\INF\Channel\Channel $requestChannel, \PEIP\INF\Channel\Channel $replyChannel = null, array $defaultHeaders = []) |
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{ |
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$this->setRequestChannel($requestChannel); |
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if ($replyChannel) { |
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$this->setReplyChannel($replyChannel); |
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} |
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$this->defaultHeaders = $defaultHeaders; |
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$this->messageBuilder = MessageBuilder::getInstance($this->messageClass); |
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} |
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/** |
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* sets the channel to send requests from the gateway. |
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* |
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* @return |
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*/ |
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public function setRequestChannel(\PEIP\INF\Channel\Channel $requestChannel) |
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{ |
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$this->requestChannel = $requestChannel; |
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} |
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/** |
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* sets the default channel to receive requests from the gateway. |
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* |
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* @param \PEIP\INF\Channel\PollableChannel $replyChannel The default channel to receive requests from the gateway |
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* |
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* @return |
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*/ |
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public function setReplyChannel(\PEIP\INF\Channel\Channel $replyChannel) |
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{ |
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if (!($replyChannel instanceof \PEIP\INF\Channel\PollableChannel)) { |
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throw new \InvalidArgumentException('reply channel must be instance of \PEIP\INF\Channel\PollableChannel.'); |
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} |
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$this->replyChannel = $replyChannel; |
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} |
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/** |
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* sends a request/message through the gateway. |
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* |
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* @param mixed $content the content/payload for the message to send |
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* |
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* @return |
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*/ |
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public function send($content) |
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{ |
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return $this->requestChannel->send($this->buildMessage($content)); |
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} |
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/** |
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* receives a request/message from the gateway. |
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* |
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* @return mixed content/payload of the received message |
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*/ |
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public function receive() |
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{ |
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if (!isset($this->replyChannel)) { |
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throw new \LogicException('No replyChannel set.'); |
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} |
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$message = $this->replyChannel->receive(); |
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if ($message) { |
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return $message->getContent(); |
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} |
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} |
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/** |
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* sends and receives a request/message through the gateway. |
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* |
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* @param \Order $content the content/payload for the message to send |
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* |
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* @return mixed content/payload of the received message |
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*/ |
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public function sendAndReceive($content) |
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{ |
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$this->send($content); |
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try { |
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$res = $this->receive(); |
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} catch (\Exception $e) { |
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return; |
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} |
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return $res; |
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} |
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/** |
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* builds the message to send from given content/payload. |
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* |
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* @param mixed $content the content/payload for the message to send |
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* |
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* @return \PEIP\INF\Message\Message the built message |
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*/ |
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protected function buildMessage($content) |
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{ |
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return $this->getMessageBuilder()->setContent($content)->build(); |
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} |
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/** |
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* returns the message builder instance for the registerd message class. |
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* |
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* @return MessageBuilder message builder instance for the registerd message class |
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*/ |
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protected function getMessageBuilder() |
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{ |
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return isset($this->messageBuilder) && ($this->messageBuilder->getMessageClass() == $this->getMessageClass()) |
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? $this->messageBuilder |
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: $this->messageBuilder = MessageBuilder::getInstance($this->messageClass)->setHeaders($this->defaultHeaders); |
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} |
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/** |
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* registers the message class to create instances from by the gateway. |
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* |
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* @param string $messageClass message class to create instances from |
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* |
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* @return |
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*/ |
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public function setMessageClass($messageClass) |
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{ |
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$this->messageClass = $messageClass; |
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} |
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/** |
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* returns the message class to create instances from. |
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* |
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* @return string message class to create instances from |
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*/ |
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public function getMessageClass() |
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{ |
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return $this->messageClass; |
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} |
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} |
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tidal /
PEIP
