3 * A PackageRecipient discovery class
5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2012 Core Developer Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.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 PackageRecipientDiscovery extends BaseHubDiscovery implements DiscoverableRecipient, Registerable {
26 * Protected constructor
30 protected function __construct () {
31 // Call parent constructor
32 parent::__construct(__CLASS__);
36 * Create an instance of this class
38 * @return $discoveryInstance An instance of this discovery class
40 public static final function createPackageRecipientDiscovery () {
41 // Get an instance of this class
42 $discoveryInstance = new PackageRecipientDiscovery();
44 // Get recipients list instance and set it
45 $listInstance = RecipientListFactory::createRecipientListInstance();
46 $discoveryInstance->setListInstance($listInstance);
48 // Output debug message
49 self::createDebugInstance(__CLASS__)->debugOutput('RECIPIENT-DISCOVERY[' . __LINE__ . ']: Initialized.');
51 // Return the prepared instance
52 return $discoveryInstance;
56 * Tries to discover all recipients for given package data
58 * @param $packageData Raw package data array
61 public function discoverRecipients (array $packageData) {
62 // This must be available
63 //* DEBUG: */ print $this->__toString() . ': packageData=' . print_r($packageData, TRUE);
64 assert(isset($packageData[NetworkPackage::PACKAGE_DATA_RECIPIENT]));
66 // First try out the direct recipient (session id)
68 // Get instance (should not break)
69 $recipientInstance = ObjectFactory::createObjectByConfiguredName('direct_recipient_class');
72 $recipientInstance->resolveRecipient($packageData[NetworkPackage::PACKAGE_DATA_RECIPIENT], $this->getListInstance());
73 } catch (FrameworkException $e) {
74 // Didn't work, so try the non-generic, depending recipient field itself (this may fail)
76 // Try to find the right class
77 $recipientInstance = ObjectFactory::createObjectByConfiguredName(strtolower($packageData[NetworkPackage::PACKAGE_DATA_RECIPIENT]) . '_recipient_class');
79 // And try to solve again
80 $recipientInstance->resolveRecipient($packageData[NetworkPackage::PACKAGE_DATA_RECIPIENT], $this->getListInstance());
81 } catch (FrameworkException $e) {
82 // Could not find class, what ever failed
83 $this->debugInstance($e->getMessage());
89 * Tries to discover all recipients by given decoded package data.
91 * @param $decodedData Raw raw package data array
93 * @todo Add some validation of recipient field, e.g. ip:port is found
94 * @todo The if() does only check for TCP, not UDP, e.g. try to get a $handlerInstance here
96 public function discoverRawRecipients (array $decodedData) {
97 // This must be available
98 assert(isset($decodedData[NetworkPackage::PACKAGE_DATA_RECIPIENT]));
100 // First clear all recipients
101 $this->clearRecipients();
103 // Explode 'recipient', first element is the IP/hostname
104 $recipient = explode(':', $decodedData[NetworkPackage::PACKAGE_DATA_RECIPIENT]);
106 // Is the 'recipient' field same as this peer's IP?
107 if ((($recipient[0] == HubTools::determineOwnExternalIp()) && ($recipient[1] == $this->getConfigInstance()->getConfigEntry('node_listen_port'))) || ($recipient[0] == $this->getConfigInstance()->getServerAddress())) {
109 * Is same as own external IP + TCP/UDP listen port or internal IP, don't do anything here so other
110 * classes found an empty recipient list for internal (own) handling
111 * of the original content.
114 // Debug output (may flood)
115 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('RECIPIENT-DISCOVERY[' . __LINE__ . ']: Recipient ' . $recipient[0] . ' matches own ip (' . HubTools::determineOwnExternalIp() . ' or ' . $this->getConfigInstance()->getServerAddress() . ')');
117 // Debug output (may flood)
118 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('RECIPIENT-DISCOVERY[' . __LINE__ . ']: Recipient ' . $recipient[0] . ' is different than own external ip (' . HubTools::determineOwnExternalIp() . ') nor internal ip (' . $this->getConfigInstance()->getServerAddress() . '), need to forward (not yet implemented)!');
120 // This package is to be delivered to someone else, so add it
121 $this->getListInstance()->addEntry('ip_port', $decodedData[NetworkPackage::PACKAGE_DATA_RECIPIENT]);
126 * "Getter" for recipient iterator
128 * @return $iteratorInstance An instance of a Iterateable object
130 public function getIterator () {
131 // Get iterator from it
132 $iteratorInstance = $this->getListInstance()->getIterator();
135 return $iteratorInstance;
139 * Checks whether the recipient list is empty
141 * @return $isEmpty Whether the recipient list is empty
143 public function isRecipientListEmpty () {
145 $isEmpty = ($this->getListInstance()->count() == 0);
152 * Clears all recipients for e.g. another package to deliver. This method
153 * simply clears the inner list instance.
157 public function clearRecipients () {
159 $this->getListInstance()->clearList();