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   1 <?php
   2 // Own namespace
   3 namespace Org\Shipsimu\Hub\Handler\Node\Message\Announcement;
   4
   5 // Import application-specific stuff
   6 use Org\Shipsimu\Hub\Database\Frontend\Node\Dht\NodeDistributedHashTableDatabaseFrontend;
   7 use Org\Shipsimu\Hub\Factory\Node\NodeObjectFactory;
   8 use Org\Shipsimu\Hub\Generic\BaseHubSystem;
   9 use Org\Shipsimu\Hub\Handler\Message\BaseMessageHandler;
  10 use Org\Shipsimu\Hub\Handler\Message\HandleableMessage;
  11 use Org\Shipsimu\Hub\Network\Message\DeliverableMessage;
  12 use Org\Shipsimu\Hub\Network\Receive\Receivable;
  13 use Org\Shipsimu\Hub\Template\Engine\Xml\Announcement\XmlAnnouncementTemplateEngine;
  14 use Org\Shipsimu\Hub\Template\Engine\Xml\Answer\Announcement\XmlAnnouncementAnswerTemplateEngine;
  15
  16 // Import framework stuff
  17 use Org\Mxchange\CoreFramework\Bootstrap\FrameworkBootstrap;
  18 use Org\Mxchange\CoreFramework\Criteria\Storing\StoreableCriteria;
  19 use Org\Mxchange\CoreFramework\Registry\Registerable;
  20
  21 /**
  22  * A NodeMessageAnnouncement handler
  23  *
  24  * @author              Roland Haeder <webmaster@shipsimu.org>
  25  * @version             0.0.0
  26  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2020 Hub Developer Team
  27  * @license             GNU GPL 3.0 or any newer version
  28  * @link                http://www.shipsimu.org
  29  *
  30  * This program is free software: you can redistribute it and/or modify
  31  * it under the terms of the GNU General Public License as published by
  32  * the Free Software Foundation, either version 3 of the License, or
  33  * (at your option) any later version.
  34  *
  35  * This program is distributed in the hope that it will be useful,
  36  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  37  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  38  * GNU General Public License for more details.
  39  *
  40  * You should have received a copy of the GNU General Public License
  41  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  42  */
  43 class NodeMessageAnnouncementHandler extends BaseMessageHandler implements HandleableMessage, Registerable {
  44         /**
  45          * Protected constructor
  46          *
  47          * @return      void
  48          */
  49         protected function __construct () {
  50                 // Call parent constructor
  51                 parent::__construct(__CLASS__);
  52
  53                 // Set handler name
  54                 $this->setHandlerName('message_announcement');
  55
  56                 // Init message data array
  57                 $this->messageDataElements = [
  58                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS,
  59                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS,
  60                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_STATUS,
  61                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_MODE,
  62                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_ID,
  63                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID,
  64                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH,
  65                 ];
  66
  67                 // Init message-data->configuration translation array
  68                 /*
  69                 $this->messageToConfig = [
  70                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS => 'your_external_address',
  71                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS => 'your_internal_address',
  72                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_ID          => 'your_node_id',
  73                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID       => 'your_session_id',
  74                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH => 'your_private_key_hash',
  75                 ];
  76                 */
  77
  78                 // Init array
  79                 $this->searchData = [
  80                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS
  81                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS,
  82                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_STATUS,
  83                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID,
  84                         XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH,
  85                 ];
  86         }
  87
  88         /**
  89          * Creates an instance of this class
  90          *
  91          * @return      $handlerInstance        An instance of a HandleableMessage class
  92          */
  93         public final static function createNodeMessageAnnouncementHandler () {
  94                 // Get new instance
  95                 $handlerInstance = new NodeMessageAnnouncementHandler();
  96
  97                 // Return the prepared instance
  98                 return $handlerInstance;
  99         }
 100
 101         /**
 102          * Handles data array of the message
 103          *
 104          * @param       $messageInstance        An instance of a DeliverableMessage class
 105          * @param       $handlerInstance        An instance of a Receivable class
 106          * @return      void
 107          * @throws      AnnouncementNotAcceptedException        If this node does not accept announcements
 108          */
 109         public function handleMessageData (DeliverableMessage $messageInstance, Receivable $handlerInstance) {
 110                 // Get node instance
 111                 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('NODE-MESSAGE-HANDLER: Creating node instance ...');
 112                 $nodeInstance = NodeObjectFactory::createNodeInstance();
 113
 114                 // Is this node accepting announcements?
 115                 if (!$nodeInstance->isAcceptingAnnouncements()) {
 116                         /*
 117                          * This node is not accepting announcements, then someone wants to
 118                          * announce his node to a non-bootstrap and non-master node.
 119                          */
 120                         throw new AnnouncementNotAcceptedException(array($this, $nodeInstance, $messageInstance), BaseHubSystem::EXCEPTION_ANNOUNCEMENT_NOT_ACCEPTED);
 121                 }
 122
 123                 // Register the announcing node with this node
 124                 $this->registerNodeByMessageInstance($messageInstance);
 125
 126                 // Prepare answer message to be delivered back to the other node
 127                 $this->prepareAnswerMessage($messageInstance, $handlerInstance);
 128         }
 129
 130         /**
 131          * Adds all required elements from given array into data set instance
 132          *
 133          * @param       $dataSetInstance        An instance of a StoreableCriteria class
 134          * @param       $messageInstance        An instance of a DeliverableMessage class
 135          * @return      void
 136          */
 137         public function addArrayToDataSet (StoreableCriteria $dataSetInstance, DeliverableMessage $messageInstance) {
 138                 // Add generic first
 139                 parent::addArrayToDataSet($dataSetInstance, $messageInstance);
 140
 141                 // Add all ements
 142                 foreach ($this->messageDataElements as $key) {
 143                         // Is it there?
 144                         assert(isset($messageData[$key]));
 145
 146                         // Add it
 147                         /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('ANNOUNCEMENT-HANDLER: Adding messageData[' . $key . ']=' . $messageData[$key] . ' ...');
 148                         $dataSetInstance->addCriteria($key, $messageData[$key]);
 149                 }
 150         }
 151
 152 }