3 * A general hub node class
5 * @author Roland Haeder <webmaster@shipsimu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 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 BaseHubNode extends BaseHubSystem implements Updateable, AddableCriteria {
28 const NODE_TYPE_BOOT = 'boot';
29 const NODE_TYPE_MASTER = 'master';
30 const NODE_TYPE_LIST = 'list';
31 const NODE_TYPE_REGULAR = 'regular';
33 // Exception constants
34 const EXCEPTION_HUB_ALREADY_ANNOUNCED = 0xe00;
37 const OBJECT_LIST_SEPARATOR = ',';
40 * Universal node locator of bootstrap node
42 private $bootUnl = '';
45 * Whether this node is anncounced (keep on FALSE!)
48 private $hubIsAnnounced = FALSE;
51 * Whether this hub is active (default: FALSE)
53 private $isActive = FALSE;
56 * Whether this node accepts announcements (default: FALSE)
58 private $acceptAnnouncements = FALSE;
61 * Whether this node accepts DHT bootstrap requests (default: FALSE)
63 private $acceptDhtBootstrap = FALSE;
66 * Protected constructor
68 * @param $className Name of the class
71 protected function __construct ($className) {
72 // Call parent constructor
73 parent::__construct($className);
75 // Get a wrapper instance
76 $wrapperInstance = DatabaseWrapperFactory::createWrapperByConfiguredName('node_info_db_wrapper_class');
79 $this->setWrapperInstance($wrapperInstance);
81 // Get a crypto instance
82 $cryptoInstance = ObjectFactory::createObjectByConfiguredName('crypto_class');
85 $this->setCryptoInstance($cryptoInstance);
87 // Init state which sets the state to 'init'
92 * Initializes the node's state which sets it to 'init'
96 private function initState() {
97 // Get the state factory and create the initial state.
98 NodeStateFactory::createNodeStateInstanceByName('init', $this);
102 * Generates a private key and hashes it (for speeding up things)
104 * @param $searchInstance An instance of a LocalSearchCriteria class
107 private function generatePrivateKeyAndHash (LocalSearchCriteria $searchInstance) {
108 // Get an RNG instance
109 $rngInstance = ObjectFactory::createObjectByConfiguredName('rng_class');
111 // Generate a pseudo-random string
112 $randomString = $rngInstance->randomString(255);
114 // Hash and encrypt the string so we become a node id (also documented as "hub id")
115 $this->setPrivateKey($this->getCryptoInstance()->encryptString($randomString));
116 $this->setPrivateKeyHash($this->getCryptoInstance()->hashString($this->getPrivateKey()));
118 // Register the node id with our wrapper
119 $this->getWrapperInstance()->registerPrivateKey($this, $this->getRequestInstance(), $searchInstance);
122 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: Created new private key with hash: ' . $this->getPrivateKeyHash() . '');
126 * Generates an UNL (Universal Node Locator) for the internal address
128 * @return $internalUnl Internal UNL
130 private function generateInternalUnl () {
132 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: CALLED!');
134 // Is there cache? (This shortens a lot calls)
135 if (!isset($GLOBALS[__METHOD__])) {
136 // Determine UNL based on this node:
137 // 1) Get discovery class
138 $discoveryInstance = ObjectFactory::createObjectByConfiguredName('unl_discovery_class');
141 $GLOBALS[__METHOD__] = $discoveryInstance->discoverUniversalNodeLocatorByConfiguredAddress('internal');
145 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: unl=' . $GLOBALS[__METHOD__] . ' - EXIT!');
146 return $GLOBALS[__METHOD__];
150 * Generates an UNL (Universal Node Locator) for the external address
152 * @return $externalUnl External UNL
154 private function generateExternalUnl () {
156 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: CALLED!');
158 // Is there cache? (This shortens a lot calls)
159 if (!isset($GLOBALS[__METHOD__])) {
160 // Determine UNL based on this node:
161 // 1) Get discovery class
162 $discoveryInstance = ObjectFactory::createObjectByConfiguredName('unl_discovery_class');
165 $GLOBALS[__METHOD__] = $discoveryInstance->discoverUniversalNodeLocatorByConfiguredAddress('external');
169 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: unl=' . $GLOBALS[__METHOD__] . ' - EXIT!');
170 return $GLOBALS[__METHOD__];
174 * Generates a random string from various data inluding UUID if PECL
175 * extension uuid is installed.
177 * @param $length Length of the random part
178 * @return $randomString Random string
179 * @todo Make this code more generic and move it to CryptoHelper or
181 protected function generateRamdomString ($length) {
182 // Get an RNG instance
183 $rngInstance = ObjectFactory::createObjectByConfiguredName('rng_class');
185 // Generate a pseudo-random string
186 $randomString = $rngInstance->randomString($length) . ':' . $this->getBootUniversalNodeLocator() . ':' . $this->getRequestInstance()->getRequestElement('mode');
188 // Add UUID for even more entropy for the hasher
189 $randomString .= $this->getCryptoInstance()->createUuid();
192 return $randomString;
196 * Getter for boot UNL (Universal Node Locator)
198 * @return $bootUnl The UNL (Universal Node Locator) of the boot node
200 protected final function getBootUniversalNodeLocator () {
201 return $this->bootUnl;
205 * Checks whether the given IP address matches one of the bootstrap nodes
207 * @param $remoteAddr IP address to checkout against our bootstrapping list
208 * @return $isFound Whether the IP is found
210 protected function ifAddressMatchesBootstrapNodes ($remoteAddr) {
211 // By default nothing is found
214 // Run through all configured IPs
215 foreach (explode(BaseHubSystem::BOOTSTRAP_NODES_SEPARATOR, $this->getConfigInstance()->getConfigEntry('hub_bootstrap_nodes')) as $unl) {
217 if ($unl == $remoteAddr) {
222 $this->bootUnl = $unl;
225 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: ' . __FUNCTION__ . '[' . __METHOD__ . ':' . __LINE__ . ']: IP matches remote address ' . $unl . '.');
227 // Stop further searching
229 } elseif ($unl == $this->getConfigInstance()->getConfigEntry('node_listen_addr')) {
231 * IP matches listen address. At this point we really don't care
232 * if we can really listen on that address
236 // Remember the port number
237 $this->bootUnl = $unl;
240 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: ' . __FUNCTION__ . '[' . __METHOD__ . ':' . __LINE__ . ']: IP matches listen address ' . $unl . '.');
242 // Stop further searching
252 * Tries to detect own UNL (Universal Node Locator)
254 * @return $unl Node's own universal node locator
256 public function detectOwnUniversalNodeLocator () {
258 if (!isset($GLOBALS[__METHOD__])) {
259 // Get the UNL array back
260 $unlData = $this->getUniversalNodeLocatorArray();
262 // There are 2 UNLs, internal and external.
263 if ($this->getConfigInstance()->getConfigEntry('allow_publish_internal_address') == 'N') {
264 // Public "external" UNL address
265 $GLOBALS[__METHOD__] = $unlData[NodeInformationDatabaseWrapper::DB_COLUMN_EXTERNAL_UNL];
267 // Non-public "internal" UNL address
268 $GLOBALS[__METHOD__] = $unlData[NodeInformationDatabaseWrapper::DB_COLUMN_INTERNAL_UNL];
273 return $GLOBALS[__METHOD__];
277 * Outputs the console teaser. This should only be executed on startup or
278 * full restarts. This method generates some space around the teaser.
282 public function outputConsoleTeaser () {
283 // Get the app instance (for shortening our code)
284 $app = $this->getApplicationInstance();
287 self::createDebugInstance(__CLASS__)->debugOutput(' ');
288 self::createDebugInstance(__CLASS__)->debugOutput($app->getAppName() . ' v' . $app->getAppVersion() . ' - ' . $this->getRequestInstance()->getRequestElement('mode') . ' mode active');
289 self::createDebugInstance(__CLASS__)->debugOutput('Copyright (c) 2007 - 2008 Roland Haeder, 2009 - 2014 Hub Developer Team');
290 self::createDebugInstance(__CLASS__)->debugOutput(' ');
291 self::createDebugInstance(__CLASS__)->debugOutput('This program comes with ABSOLUTELY NO WARRANTY; for details see docs/COPYING.');
292 self::createDebugInstance(__CLASS__)->debugOutput('This is free software, and you are welcome to redistribute it under certain');
293 self::createDebugInstance(__CLASS__)->debugOutput('conditions; see docs/COPYING for details.');
294 self::createDebugInstance(__CLASS__)->debugOutput(' ');
298 * Generic method to acquire a hub-id. On first run this generates a new one
299 * based on many pseudo-random data. On any later run, unless the id
300 * got not removed from database, it will be restored from the database.
302 * @param $requestInstance A Requestable class
303 * @param $responseInstance A Responseable class
306 public function bootstrapAcquireNodeId (Requestable $requestInstance, Responseable $responseInstance) {
307 // Is there a node id?
308 if ($this->getWrapperInstance()->ifNodeDataIsFound($this)) {
309 // Get the node id from result and set it
310 $this->setNodeId($this->getField(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_ID));
313 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: Re-using found node-id: ' . $this->getNodeId() . '');
315 // Get an RNG instance
316 $rngInstance = ObjectFactory::createObjectByConfiguredName('rng_class');
318 // Generate a pseudo-random string
319 $randomString = $rngInstance->randomString(255);
321 // Hash and encrypt the string so we become a node id (also documented as "hub id")
322 $this->setNodeId($this->getCryptoInstance()->hashString($this->getCryptoInstance()->encryptString($randomString)));
324 // Register the node id with our wrapper
325 $this->getWrapperInstance()->registerNodeId($this, $this->getRequestInstance());
328 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: Created new node-id: ' . $this->getNodeId() . '');
333 * Generates a session id which will be sent to the other hubs and peers
337 public function bootstrapGenerateSessionId () {
338 // Now get a search criteria instance
339 $searchInstance = ObjectFactory::createObjectByConfiguredName('search_criteria_class');
341 // Search for the node number one which is hard-coded the default
342 $searchInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_NR , 1);
343 $searchInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_MODE, $this->getRequestInstance()->getRequestElement('mode'));
344 $searchInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_ID , $this->getNodeId());
345 $searchInstance->setLimit(1);
347 // Remember it for later usage
348 $this->setSearchInstance($searchInstance);
350 // Get a random string
351 $randomString = $this->generateRamdomString(255);
353 // Hash and encrypt the string so we become a "node id" aka Hub-Id
354 $this->setSessionId($this->getCryptoInstance()->hashString($this->getCryptoInstance()->encryptString($randomString)));
356 // Register the node id with our wrapper
357 $this->getWrapperInstance()->registerSessionId($this, $this->getRequestInstance(), $searchInstance);
360 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: Created new session-id: ' . $this->getSessionId() . '');
362 // Change the state because the node has auired a hub id
363 $this->getStateInstance()->nodeGeneratedSessionId();
367 * Generate a private key for en-/decryption
371 public function bootstrapGeneratePrivateKey () {
373 if ($this->getWrapperInstance()->ifNodeDataIsFound($this)) {
374 // Is the element set?
375 if (is_null($this->getField(NodeInformationDatabaseWrapper::DB_COLUMN_PRIVATE_KEY))) {
377 * Auto-generate the private key for e.g. out-dated database
378 * "tables". This allows a smooth update for the underlaying
381 $this->generatePrivateKeyAndHash($this->getSearchInstance());
383 // Get the node id from result and set it
384 $this->setPrivateKey(base64_decode($this->getField(NodeInformationDatabaseWrapper::DB_COLUMN_PRIVATE_KEY)));
385 $this->setPrivateKeyHash($this->getField(NodeInformationDatabaseWrapper::DB_COLUMN_PRIVATE_KEY_HASH));
388 self::createDebugInstance(__CLASS__)->debugOutput('BOOTSTRAP: Re-using found private key hash: ' . $this->getPrivateKeyHash() . '');
392 * Generate it in a private method (no confusion with 'private
393 * method access' and 'private key' here! ;-)).
395 $this->generatePrivateKeyAndHash($this->getSearchInstance());
400 * Adds hub data elements to a given dataset instance
402 * @param $criteriaInstance An instance of a storeable criteria
403 * @param $requestInstance An instance of a Requestable class
406 public function addElementsToDataSet (StoreableCriteria $criteriaInstance, Requestable $requestInstance = NULL) {
407 // Make sure the request instance is set as it is not optional.
408 assert($requestInstance instanceof Requestable);
410 // Add node number and type
411 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_NR , 1);
412 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_MODE, $requestInstance->getRequestElement('mode'));
415 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_ID, $this->getNodeId());
417 // Add the session id if acquired
418 if ($this->getSessionId() != '') {
419 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_SESSION_ID, $this->getSessionId());
422 // Add the private key if acquired
423 if ($this->getPrivateKey() != '') {
424 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_PRIVATE_KEY, base64_encode($this->getPrivateKey()));
425 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_PRIVATE_KEY_HASH, $this->getPrivateKeyHash());
428 // Add own external and internal addresses as UNLs
429 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_INTERNAL_UNL, $this->generateInternalUnl());
430 $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_EXTERNAL_UNL, $this->generateExternalUnl());
434 * Updates a given field with new value
436 * @param $fieldName Field to update
437 * @param $fieldValue New value to store
439 * @throws DatabaseUpdateSupportException If this class does not support database updates
440 * @todo Try to make this method more generic so we can move it in BaseFrameworkSystem
442 public function updateDatabaseField ($fieldName, $fieldValue) {
444 $this->partialStub('Unfinished!');
447 // Get a critieria instance
448 $searchInstance = ObjectFactory::createObjectByConfiguredName('search_criteria_class');
450 // Add search criteria
451 $searchInstance->addCriteria(UserDatabaseWrapper::DB_COLUMN_USERNAME, $this->getUserName());
452 $searchInstance->setLimit(1);
454 // Now get another criteria
455 $updateInstance = ObjectFactory::createObjectByConfiguredName('update_criteria_class');
457 // Add criteria entry which we shall update
458 $updateInstance->addCriteria($fieldName, $fieldValue);
460 // Add the search criteria for searching for the right entry
461 $updateInstance->setSearchInstance($searchInstance);
463 // Set wrapper class name
464 $updateInstance->setWrapperConfigEntry('user_db_wrapper_class');
466 // Remember the update in database result
467 $this->getResultInstance()->add2UpdateQueue($updateInstance);
471 * Announces this hub to the upper (bootstrap or list) hubs. After this is
472 * successfully done the given task is unregistered from the handler. This
473 * might look a bit overloaded here but the announcement phase isn't a
474 * simple "Hello there" message, it may later on also contain more
475 * informations like the object list.
477 * @param $taskInstance The task instance running this announcement
479 * @throws NodeAlreadyAnnouncedException If this hub is already announced
480 * @todo Change the first if() block to check for a specific state
482 public function announceToUpperNodes (Taskable $taskInstance) {
483 // Is this hub node announced?
484 if ($this->hubIsAnnounced === TRUE) {
485 // Already announced!
486 throw new NodeAlreadyAnnouncedException($this, self::EXCEPTION_HUB_ALREADY_ANNOUNCED);
490 self::createDebugInstance(__CLASS__)->debugOutput('HUB-Announcement: START (taskInstance=' . $taskInstance->__toString(). ')');
492 // Get a helper instance
493 $helperInstance = ObjectFactory::createObjectByConfiguredName('node_announcement_helper_class');
495 // Load the announcement descriptor
496 $helperInstance->loadDescriptorXml($this);
498 // Compile all variables
499 $helperInstance->getTemplateInstance()->compileConfigInVariables();
501 // "Publish" the descriptor by sending it to the bootstrap/list nodes
502 $helperInstance->sendPackage($this);
504 // Change the state, this should be the last line except debug output
505 $this->getStateInstance()->nodeAnnouncingToUpperHubs();
508 self::createDebugInstance(__CLASS__)->debugOutput('HUB-Announcement: FINISHED');
512 * Does a self-connect attempt on the public IP address. This should make
513 * it sure, we are reachable from outside world. For this kind of package we
514 * don't need that overload we have in the announcement phase.
516 * @param $taskInstance The task instance running this announcement
519 public function doSelfConnection (Taskable $taskInstance) {
521 self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: Self Connection: START (taskInstance=' . $taskInstance->__toString(). ')');
523 // Get a helper instance
524 $helperInstance = ObjectFactory::createObjectByConfiguredName('node_self_connect_helper_class', array($this));
526 // Load the descriptor (XML) file
527 $helperInstance->loadDescriptorXml($this);
529 // Compile all variables
530 $helperInstance->getTemplateInstance()->compileConfigInVariables();
532 // And send the package away
533 $helperInstance->sendPackage($this);
536 self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: Self Connection: FINISHED');
540 * Activates the hub by doing some final preparation and setting
541 * $hubIsActive to TRUE.
543 * @param $requestInstance A Requestable class
544 * @param $responseInstance A Responseable class
547 public function activateNode (Requestable $requestInstance, Responseable $responseInstance) {
548 // Checks whether a listener is still active and shuts it down if one
549 // is still listening.
550 if (($this->determineIfListenerIsActive()) && ($this->isNodeActive())) {
551 // Shutdown them down before they can hurt anything
552 $this->shutdownListenerPool();
555 // Get the controller here
556 $controllerInstance = Registry::getRegistry()->getInstance('controller');
558 // Run all filters for the hub activation
559 $controllerInstance->executeActivationFilters($requestInstance, $responseInstance);
561 // ----------------------- Last step from here ------------------------
562 // Activate the hub. This is ALWAYS the last step in this method
563 $this->getStateInstance()->nodeIsActivated();
564 // ---------------------- Last step until here ------------------------
568 * Initializes the listener pool (class)
572 public function initializeListenerPool () {
574 self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: Initialize listener: START');
576 // Get a new pool instance
577 $this->setListenerPoolInstance(ObjectFactory::createObjectByConfiguredName('listener_pool_class', array($this)));
579 // Get an instance of the low-level listener
580 $listenerInstance = ObjectFactory::createObjectByConfiguredName('tcp_listener_class', array($this));
582 // Setup address and port
583 $listenerInstance->setListenAddressByConfiguration('node_listen_addr');
586 * All nodes can now use the same configuration entry because it can be
587 * customized in config-local.php.
589 $listenerInstance->setListenPortByConfiguration('node_listen_port');
591 // Initialize the listener
592 $listenerInstance->initListener();
594 // Get a decorator class
595 $decoratorInstance = ObjectFactory::createObjectByConfiguredName('node_tcp_listener_class', array($listenerInstance));
597 // Add this listener to the pool
598 $this->getListenerPoolInstance()->addListener($decoratorInstance);
600 // Get a decorator class
601 $decoratorInstance = ObjectFactory::createObjectByConfiguredName('client_tcp_listener_class', array($listenerInstance));
603 // Add this listener to the pool
604 $this->getListenerPoolInstance()->addListener($decoratorInstance);
606 // Get an instance of the low-level listener
607 $listenerInstance = ObjectFactory::createObjectByConfiguredName('udp_listener_class', array($this));
609 // Setup address and port
610 $listenerInstance->setListenAddressByConfiguration('node_listen_addr');
613 * All nodes can now use the same configuration entry because it can be
614 * customized in config-local.php.
616 $listenerInstance->setListenPortByConfiguration('node_listen_port');
618 // Initialize the listener
619 $listenerInstance->initListener();
621 // Get a decorator class
622 $decoratorInstance = ObjectFactory::createObjectByConfiguredName('node_udp_listener_class', array($listenerInstance));
624 // Add this listener to the pool
625 $this->getListenerPoolInstance()->addListener($decoratorInstance);
627 // Get a decorator class
628 $decoratorInstance = ObjectFactory::createObjectByConfiguredName('client_udp_listener_class', array($listenerInstance));
630 // Add this listener to the pool
631 $this->getListenerPoolInstance()->addListener($decoratorInstance);
634 self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: Initialize listener: FINISHED.');
638 * Getter for isActive attribute
640 * @return $isActive Whether the hub is active
642 public final function isNodeActive () {
643 return $this->isActive;
647 * Enables (default) or disables isActive flag
649 * @param $isActive Whether the hub is active
652 public final function enableIsActive ($isActive = TRUE) {
653 $this->isActive = (bool) $isActive;
657 * Checks whether this node accepts announcements
659 * @return $acceptAnnouncements Whether this node accepts announcements
661 public final function isAcceptingAnnouncements () {
662 // Check it (this node must be active and not shutdown!)
663 $acceptAnnouncements = (($this->acceptAnnouncements === TRUE) && ($this->isNodeActive()));
666 return $acceptAnnouncements;
670 * Checks whether this node accepts DHT bootstrap requests
672 * @return $acceptDhtBootstrap Whether this node accepts DHT bootstrap requests
674 public final function isAcceptingDhtBootstrap () {
675 // Check it (this node must be active and not shutdown!)
676 $acceptDhtBootstrap = (($this->acceptDhtBootstrap === TRUE) && ($this->isNodeActive()));
679 return $acceptDhtBootstrap;
683 * Checks whether this node has attempted to announce itself
685 * @return $hasAnnounced Whether this node has attempted to announce itself
686 * @todo Add checking if this node has been announced to the sender node
688 public function ifNodeIsAnnouncing () {
690 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: ifNodeIsAnnouncing(): state=' . $this->getStateInstance()->getStateName());
692 // Simply check the state of this node
693 $hasAnnounced = ($this->getStateInstance() instanceof NodeAnnouncingState);
696 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: ifNodeIsAnnouncing(): hasAnnounced=' . intval($hasAnnounced));
699 return $hasAnnounced;
703 * Checks whether this node has attempted to announce itself and completed it
705 * @return $hasAnnouncementCompleted Whether this node has attempted to announce itself and completed it
706 * @todo Add checking if this node has been announced to the sender node
708 public function ifNodeHasAnnouncementCompleted () {
710 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: ifNodeHasAnnouncementCompleted(): state=' . $this->getStateInstance()->getStateName());
712 // Simply check the state of this node
713 $hasAnnouncementCompleted = ($this->getStateInstance() instanceof NodeAnnouncementCompletedState);
716 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: ifNodeHasAnnouncementCompleted(): hasAnnouncementCompleted=' . intval($hasAnnouncementCompleted));
719 return $hasAnnouncementCompleted;
723 * Enables whether this node accepts announcements
725 * @param $acceptAnnouncements Whether this node accepts announcements (default: TRUE)
728 protected final function enableAcceptingAnnouncements ($acceptAnnouncements = TRUE) {
729 $this->acceptAnnouncements = $acceptAnnouncements;
733 * Enables whether this node accepts DHT bootstrap requests
735 * @param $acceptDhtBootstrap Whether this node accepts DHT bootstrap requests (default: TRUE)
738 public final function enableAcceptDhtBootstrap ($acceptDhtBootstrap = TRUE) {
739 /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: Enabling DHT bootstrap requests ...');
740 $this->acceptDhtBootstrap = $acceptDhtBootstrap;
744 * Checks wether this node is accepting node-list requests
746 * @return $acceptsRequest Wether this node accepts node-list requests
748 public function isAcceptingNodeListRequests () {
750 * Only 'regular' nodes does not accept such requests, checking
751 * HubRegularNode is faster, but if e.g. HubRegularI2PNode will be
752 * added then the next check will be TRUE.
754 $acceptsRequest = ((!$this instanceof HubRegularNode) && ($this->getRequestInstance()->getRequestElement('mode') != self::NODE_TYPE_REGULAR));
757 return $acceptsRequest;
761 * Determines an instance of a LocateableNode class
763 * @return $unlInstance An instance of a LocateableNode class for this node
765 public function determineUniversalNodeLocator () {
767 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: CALLED!');
769 // Determine UNL based on this node:
770 // 1) Get discovery class
771 $discoveryInstance = ObjectFactory::createObjectByConfiguredName('unl_discovery_class');
774 $unlInstance = $discoveryInstance->discoverUniversalNodeLocatorByNode($this);
777 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: unlInstance= ' . $unlInstance->__toString() . ' - EXIT!');
782 * "Getter" for an array of an instance of a LocateableNode class
784 * @return $unlData An array from an instance of a LocateableNode class for this node
786 public final function getUniversalNodeLocatorArray () {
788 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: CALLED!');
790 // Get the Universal Node Locator (UNL) instance
791 $unlInstance = $this->determineUniversalNodeLocator();
793 // ... and the array from it
794 $unlData = $unlInstance->getUnlData();
797 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: EXIT!');
802 * Updates/refreshes node data (e.g. status).
805 * @todo Find more to do here
807 public function updateNodeData () {
808 // Set some dummy configuration entries, e.g. node_status
809 $this->getConfigInstance()->setConfigEntry('node_status', $this->getStateInstance()->getStateName());
813 * Handles message answer by given data array
815 * @param $messageData A valid answer message data array
816 * @param $packageInstance An instance of a Receivable class
818 * @todo Handle thrown exception
820 public function handleAnswerStatusByMessageData (array $messageData, Receivable $packageInstance) {
822 assert(!empty($messageData[BaseXmlAnswerTemplateEngine::ANSWER_STATUS]));
824 // Construct configuration entry for handling class' name
825 $classConfigEntry = strtolower($messageData[NetworkPackage::MESSAGE_ARRAY_TYPE] . '_status_' . $messageData[BaseXmlAnswerTemplateEngine::ANSWER_STATUS]) . '_handler_class';
827 // Try to get a class
828 $handlerInstance = ObjectFactory::createObjectByConfiguredName($classConfigEntry);
831 $handlerInstance->handleAnswerMessageData($messageData, $packageInstance);
835 * "Getter" for an array of all accepted object types
837 * @return $objectList Array of all accepted object types
839 public function getListFromAcceptedObjectTypes () {
840 // Get registry instance
841 $objectRegistryInstance = ObjectTypeRegistryFactory::createObjectTypeRegistryInstance();
844 $objectList = $objectRegistryInstance->getEntries(XmlObjectRegistryTemplateEngine::OBJECT_TYPE_DATA_NAME);
851 * Adds all required elements from given array into data set instance
853 * @param $dataSetInstance An instance of a StoreableCriteria class
854 * @param $nodeData An array with valid node data
857 public function addArrayToDataSet (StoreableCriteria $dataSetInstance, array $nodeData) {
858 // Add all data the array provides
859 foreach (NodeDistributedHashTableDatabaseWrapper::getAllElements() as $element) {
860 // Is the element there?
861 if (isset($nodeData[$element])) {
863 $dataSetInstance->addCriteria($element, $nodeData[$element]);
865 // Output warning message
866 /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE[' . __METHOD__ . ':' . __LINE__ . ']: addArrayToDataSet(): Element ' . $element . ' not found in nodeData array.');