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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The software is based on the Axon Framework project which is |
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* licensed under the Apache 2.0 license. For more information on the Axon Framework |
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* see <http://www.axonframework.org/>. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. For more information, see |
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* <http://www.governor-framework.org/>. |
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*/ |
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namespace Governor\Framework\CommandHandling\Distributed; |
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use Governor\Framework\CommandHandling\Callbacks\ClosureCommandCallback; |
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use Governor\Framework\CommandHandling\Callbacks\ResultCallback; |
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use Governor\Framework\Common\ReceiverInterface; |
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use Governor\Framework\CommandHandling\CommandBusInterface; |
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use Governor\Framework\Serializer\SerializerInterface; |
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use Psr\Log\LoggerAwareInterface; |
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use Governor\Framework\Common\Logging\NullLogger; |
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use Psr\Log\LoggerInterface; |
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/** |
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* Receiver that forwards incoming distributed commands to the local command bus. |
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* |
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* @author "David Kalosi" <[email protected]> |
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* @license <a href="http://www.opensource.org/licenses/mit-license.php">MIT License</a> |
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*/ |
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class CommandReceiver implements ReceiverInterface, LoggerAwareInterface |
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{ |
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/** |
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* @var RedisTemplate |
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*/ |
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private $template; |
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/** |
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* @var CommandBusInterface |
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*/ |
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private $localSegment; |
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/** |
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* @var SerializerInterface |
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*/ |
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private $serializer; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @param RedisTemplate $template |
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* @param CommandBusInterface $localSegment |
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* @param SerializerInterface $serializer |
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*/ |
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function __construct(RedisTemplate $template, CommandBusInterface $localSegment, SerializerInterface $serializer) |
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{ |
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$this->template = $template; |
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$this->localSegment = $localSegment; |
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$this->serializer = $serializer; |
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$this->logger = new NullLogger(); |
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} |
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// TODO daemonize: interrupts, shutdown etc |
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public function run() |
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{ |
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while (true) { |
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try { |
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$this->processCommand(); |
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} catch (\Exception $ex) { |
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$this->logger->error( |
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'Exception on node {node} while processing command: {message}', |
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[ |
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'node' => $this->template->getNodeName(), |
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'message' => $ex->getMessage() |
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] |
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); |
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} |
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} |
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} |
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public function processCommand() |
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{ |
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$data = $this->template->dequeueCommand(); |
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if (null === $data) { |
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$this->logger->info('Timeout while waiting for commands, re-entering loop'); |
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return; |
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} |
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$dispatchMessage = DispatchMessage::fromBytes($this->serializer, $data[1]); |
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$self = $this; |
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View Code Duplication |
$successCallback = function ($result) use ($dispatchMessage, $self) { |
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$message = new ReplyMessage( |
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$dispatchMessage->getCommandIdentifier(), |
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$self->serializer, |
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$result |
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); |
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$self->template->writeCommandReply($dispatchMessage->getCommandIdentifier(), $message->toBytes()); |
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}; |
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View Code Duplication |
$failureCallback = function (\Exception $cause) use ($dispatchMessage, $self) { |
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$message = new ReplyMessage( |
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$dispatchMessage->getCommandIdentifier(), |
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$self->serializer, |
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$cause, |
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false |
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); |
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$self->template->writeCommandReply($dispatchMessage->getCommandIdentifier(), $message->toBytes()); |
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}; |
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$this->localSegment->dispatch( |
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$dispatchMessage->getCommandMessage(), |
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$dispatchMessage->isExpectReply() ? new ClosureCommandCallback( |
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$successCallback, $failureCallback |
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) : null |
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); |
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} |
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/** |
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* Sets a logger instance on the object |
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* |
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* @param LoggerInterface $logger |
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* @return null |
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*/ |
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public function setLogger(LoggerInterface $logger) |
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{ |
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$this->logger = $logger; |
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} |
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} |
SmartGecko /
GovernorFramework
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Adding explicit visibility (
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