3 * A NodeMessageAnnouncement handler
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
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class NodeMessageAnnouncementHandler extends BaseMessageHandler implements HandleableMessage, Registerable {
26 * Protected constructor
30 protected function __construct () {
31 // Call parent constructor
32 parent::__construct(__CLASS__);
35 $this->setHandlerName('message_announcement');
37 // Init message data array
38 $this->messageDataElements = array(
39 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS,
40 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS,
41 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_STATUS,
42 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_MODE,
43 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_ID,
44 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID,
45 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH,
48 // Init message-data->configuration translation array
49 $this->messageToConfig = array(
50 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS => 'your_external_address',
51 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS => 'your_internal_address',
52 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_NODE_ID => 'your_node_id',
53 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID => 'your_session_id',
54 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH => 'your_private_key_hash',
57 // Init config-copy array
58 $this->configCopy = array(
59 XmlAnnouncementAnswerTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS => 'external_address',
60 XmlAnnouncementAnswerTemplateEngine::ANNOUNCEMENT_DATA_INTERNAL_ADDRESS => 'internal_address',
61 XmlAnnouncementAnswerTemplateEngine::ANNOUNCEMENT_DATA_NODE_STATUS => 'node_status',
62 XmlAnnouncementAnswerTemplateEngine::ANNOUNCEMENT_DATA_SESSION_ID => 'session_id',
63 XmlAnnouncementAnswerTemplateEngine::ANNOUNCEMENT_DATA_PRIVATE_KEY_HASH => 'private_key_hash',
67 $this->searchData = array(
68 XmlAnnouncementTemplateEngine::ANNOUNCEMENT_DATA_EXTERNAL_ADDRESS
73 * Creates an instance of this class
75 * @return $handlerInstance An instance of a HandleableMessage class
77 public final static function createNodeMessageAnnouncementHandler () {
79 $handlerInstance = new NodeMessageAnnouncementHandler();
81 // Return the prepared instance
82 return $handlerInstance;
86 * Handles data array of the message
88 * @param $messageData An array with message data to handle
89 * @param $packageInstance An instance of a Receivable class
91 * @throws AnnouncementNotAcceptedException If this node does not accept announcements
93 public function handleMessageData (array $messageData, Receivable $packageInstance) {
95 $nodeInstance = NodeObjectFactory::createNodeInstance();
97 // Is this node accepting announcements?
98 if (!$nodeInstance->isAcceptingAnnouncements()) {
100 * This node is not accepting announcements, then someone wants to
101 * announce his node to a non-bootstrap and non-master node.
103 throw new AnnouncementNotAcceptedException(array($this, $nodeInstance, $messageData), BaseHubSystem::EXCEPTION_ANNOUNCEMENT_NOT_ACCEPTED);
106 // Register the announcing node with this node
107 $this->registerNodeByMessageData($messageData);
109 // Prepare answer message to be delivered back to the other node
110 $this->prepareAnswerMessage($messageData, $packageInstance);
114 * Adds all required elements from given array into data set instance
116 * @param $dataSetInstance An instance of a StoreableCriteria class
117 * @param $messageData An array with all message data
120 public function addArrayToDataSet (StoreableCriteria $dataSetInstance, array $messageData) {
122 parent::addArrayToDataSet($dataSetInstance, $messageData);
125 foreach ($this->messageDataElements as $key) {
127 assert(isset($messageData[$key]));
130 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('ANNOUNCEMENT-HANDLER[' . __METHOD__ . ':' . __LINE__ . ']: Adding messageData[' . $key . ']=' . $messageData[$key] . ' ...');
131 $dataSetInstance->addCriteria($key, $messageData[$key]);
136 * Initializes configuration data from given message data array
138 * @param $messageData An array with all message data
141 protected function initMessageConfigurationData (array $messageData) {
143 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('ANNOUNCEMENT-HANDLER[' . __METHOD__ . ':' . __LINE__ . ']: messageData=' . print_r($messageData, TRUE));
145 // "Walk" throught the translation array
146 foreach ($this->messageToConfig as $messageKey => $configKey) {
148 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('ANNOUNCEMENT-HANDLER[' . __METHOD__ . ':' . __LINE__ . ']: Setting messageKey=' . $messageKey . ',configKey=' . $configKey . ':' . $messageData[$messageKey]);
150 // Set the element in configuration
151 $this->getConfigInstance()->setConfigEntry($configKey, $messageData[$messageKey]);
154 // "Walk" throught the config-copy array
155 foreach ($this->configCopy as $targetKey => $sourceKey) {
157 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('ANNOUNCEMENT-HANDLER[' . __METHOD__ . ':' . __LINE__ . ']: Copying from sourceKey=' . $sourceKey . ' to targetKey=' . $targetKey . '...');
159 // Copy from source to targetKey
160 $this->getConfigInstance()->setConfigEntry($targetKey, $this->getConfigInstance()->getConfigEntry($sourceKey));
163 // Translate last exception into a status code
164 $statusCode = $this->getTranslatedStatusFromLastException();
166 // Set it in configuration (temporarily)
167 $this->getConfigInstance()->setConfigEntry(NodeDistributedHashTableDatabaseWrapper::DB_COLUMN_ANSWER_STATUS, $statusCode);
171 * Removes configuration data with given message data array from global
174 * @param $messageData An array with all message data
177 protected function removeMessageConfigurationData (array $messageData) {
178 // "Walk" throught the translation array again
179 foreach ($this->messageToConfig as $dummy => $configKey) {
180 // Now unset this configuration entry (to save some memory)
181 $this->getConfigInstance()->unsetConfigEntry($configKey);
184 // "Walk" throught the config-copy array again
185 foreach ($this->configCopy as $configKey => $dummy) {
186 // Now unset this configuration entry (to save some memory again)
187 $this->getConfigInstance()->unsetConfigEntry($configKey);
190 // Remove NodeDistributedHashTableDatabaseWrapper::DB_COLUMN_ANSWER_STATUS as well
191 $this->getConfigInstance()->unsetConfigEntry(NodeDistributedHashTableDatabaseWrapper::DB_COLUMN_ANSWER_STATUS);