3 * A RequestNodeListMessageAnswer node helper class
5 * @author Roland Haeder <webmaster@shipsimu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Hub Developer Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.shipsimu.org
10 * @todo Find an interface for hub helper
12 * This program is free software: you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation, either version 3 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 class NodeRequestNodeListMessageAnswerHelper extends BaseHubAnswerHelper implements HelpableNode {
27 * Protected constructor
31 protected function __construct () {
32 // Call parent constructor
33 parent::__construct(__CLASS__);
36 $this->setPackageTags(array('request_node_list_answer'));
40 * Creates the helper class
42 * @param $messageData An array with all message data
43 * @return $helperInstance A prepared instance of this helper
45 public final static function createNodeRequestNodeListMessageAnswerHelper (array $messageData) {
47 $helperInstance = new NodeRequestNodeListMessageAnswerHelper();
49 // Set session id of other peer as recipient
50 $helperInstance->setRecipientType($messageData[XmlRequestNodeListTemplateEngine::REQUEST_DATA_SESSION_ID]);
53 $helperInstance->setMessageData($messageData);
55 // Return the prepared instance
56 return $helperInstance;
60 * Loads the descriptor XML file
62 * @param $nodeInstance An instance of a NodeHelper class
65 public function loadDescriptorXml (NodeHelper $nodeInstance) {
67 self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('HELPER[' . __METHOD__ . ':' . __LINE__ . ']: Attempting to answer a request: node-list...');
69 // Get a XML template instance
70 $templateInstance = XmlTemplateEngineFactory::createXmlTemplateEngineInstance('node_request_node_list_answer_template_class');
72 // Set it for later use
73 $this->setTemplateInstance($templateInstance);
75 // Read the XML descriptor
76 $templateInstance->loadXmlTemplate();
78 // "Cache" entries instance for next foreach loop
79 $entriesInstance = $templateInstance->getTemplateInstance();
81 // Is must not be NULL (then it can only be a template instance)
82 assert(!is_null($entriesInstance));
84 // Render the XML content
85 $templateInstance->renderXmlContent();
89 * Send out request-node-list answer package
91 * @param $nodeInstance An instance of a NodeHelper class
94 public function sendPackage (NodeHelper $nodeInstance) {
95 // Sanity check: Is the node in the approx. state? (active/reachable)
96 $nodeInstance->getStateInstance()->validateNodeStateIsActiveOrReachable();
98 // Compile the template, this inserts the loaded node data into the gaps.
99 $this->getTemplateInstance()->compileTemplate();
101 // Get a singleton network package instance
102 $packageInstance = NetworkPackageFactory::createNetworkPackageInstance();
104 // Next, feed the content in. The network package class is a pipe-through class.
105 $packageInstance->enqueueRawDataFromTemplate($this);