+
+ /**
+ * Announces this hub to the upper (bootstrap or list) hubs. After this is
+ * successfully done the given task is unregistered from the handler. This
+ * might look a bit overloaded here but the announcement phase isn't a
+ * simple "Hello there" message, it may later on also contain more
+ * informations like the object list.
+ *
+ * @param $taskInstance The task instance running this announcement
+ * @return void
+ * @throws NodeAlreadyAnnouncedException If this hub is already announced
+ * @todo Change the first if() block to check for a specific state
+ */
+ public function announceSelfToUpperNodes (Taskable $taskInstance) {
+ // Is this hub node announced?
+ if ($this->hubIsAnnounced === true) {
+ // Already announced!
+ throw new NodeAlreadyAnnouncedException($this, self::EXCEPTION_HUB_ALREADY_ANNOUNCED);
+ } // END - if
+
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB-Announcement: START (taskInstance=' . $taskInstance->__toString(). ')');
+
+ // Get a helper instance
+ $helperInstance = ObjectFactory::createObjectByConfiguredName('hub_announcement_helper_class');
+
+ // Load the announcement descriptor
+ $helperInstance->loadDescriptorXml($this);
+
+ // Compile all variables
+ $helperInstance->getTemplateInstance()->compileConfigInVariables();
+
+ // "Publish" the descriptor by sending it to the bootstrap/list nodes
+ $helperInstance->sendPackage($this);
+
+ // Change the state, this should be the last line except debug output
+ $this->getStateInstance()->nodeAnnouncedToUpperHubs();
+
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB-Announcement: FINISHED');
+ }
+
+ /**
+ * Does a self-connect attempt on the public IP address. This should make
+ * it sure, we are reachable from outside world. For this kind of package we
+ * don't need that overload we have in the announcement phase.
+ *
+ * @param $taskInstance The task instance running this announcement
+ * @return void
+ */
+ public function doSelfConnection (Taskable $taskInstance) {
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Self Connection: START (taskInstance=' . $taskInstance->__toString(). ')');
+
+ // Get a helper instance
+ $helperInstance = ObjectFactory::createObjectByConfiguredName('hub_self_connect_helper_class', array($this));
+
+ // Load the descriptor (XML) file
+ $helperInstance->loadDescriptorXml($this);
+
+ // Compile all variables
+ $helperInstance->getTemplateInstance()->compileConfigInVariables();
+
+ // And send the package away
+ $helperInstance->sendPackage($this);
+
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Self Connection: FINISHED');
+ }
+
+ /**
+ * Activates the hub by doing some final preparation and setting
+ * $hubIsActive to true
+ *
+ * @param $requestInstance A Requestable class
+ * @param $responseInstance A Responseable class
+ * @return void
+ */
+ public function activateNode (Requestable $requestInstance, Responseable $responseInstance) {
+ // Checks whether a listener is still active and shuts it down if one
+ // is still listening.
+ if (($this->determineIfListenerIsActive()) && ($this->isNodeActive())) {
+ // Shutdown them down before they can hurt anything
+ $this->shutdownListenerPool();
+ } // END - if
+
+ // Get the controller here
+ $controllerInstance = Registry::getRegistry()->getInstance('controller');
+
+ // Run all filters for the hub activation
+ $controllerInstance->executeActivationFilters($requestInstance, $responseInstance);
+
+ // ----------------------- Last step from here ------------------------
+ // Activate the hub. This is ALWAYS the last step in this method
+ $this->getStateInstance()->nodeIsActivated();
+ // ---------------------- Last step until here ------------------------
+ }
+
+ /**
+ * Initializes the listener pool (class)
+ *
+ * @return void
+ */
+ public function initializeListenerPool () {
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Initialize listener: START');
+
+ // Get a new pool instance
+ $this->setListenerPoolInstance(ObjectFactory::createObjectByConfiguredName('listener_pool_class', array($this)));
+
+ // Get an instance of the low-level listener
+ $listenerInstance = ObjectFactory::createObjectByConfiguredName('tcp_listener_class', array($this));
+
+ // Setup address and port
+ $listenerInstance->setListenAddressByConfiguration('node_listen_addr');
+
+ /*
+ * All nodes can now use the same configuration entry because it can be
+ * customized in config-local.php.
+ */
+ $listenerInstance->setListenPortByConfiguration('node_tcp_listen_port');
+
+ // Initialize the listener
+ $listenerInstance->initListener();
+
+ // Get a decorator class
+ $decoratorInstance = ObjectFactory::createObjectByConfiguredName('hub_tcp_listener_class', array($listenerInstance));
+
+ // Add this listener to the pool
+ $this->getListenerPoolInstance()->addListener($decoratorInstance);
+
+ // Get a decorator class
+ $decoratorInstance = ObjectFactory::createObjectByConfiguredName('client_tcp_listener_class', array($listenerInstance));
+
+ // Add this listener to the pool
+ $this->getListenerPoolInstance()->addListener($decoratorInstance);
+
+ // Get an instance of the low-level listener
+ $listenerInstance = ObjectFactory::createObjectByConfiguredName('udp_listener_class', array($this));
+
+ // Setup address and port
+ $listenerInstance->setListenAddressByConfiguration('node_listen_addr');
+
+ /*
+ * All nodes can now use the same configuration entry because it can be
+ * customized in config-local.php.
+ */
+ $listenerInstance->setListenPortByConfiguration('node_udp_listen_port');
+
+ // Initialize the listener
+ $listenerInstance->initListener();
+
+ // Get a decorator class
+ $decoratorInstance = ObjectFactory::createObjectByConfiguredName('hub_udp_listener_class', array($listenerInstance));
+
+ // Add this listener to the pool
+ $this->getListenerPoolInstance()->addListener($decoratorInstance);
+
+ // Get a decorator class
+ $decoratorInstance = ObjectFactory::createObjectByConfiguredName('client_udp_listener_class', array($listenerInstance));
+
+ // Add this listener to the pool
+ $this->getListenerPoolInstance()->addListener($decoratorInstance);
+
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Initialize listener: FINISHED.');
+ }
+
+ /**
+ * Restores a previously stored node list from database
+ *
+ * @return void
+ */
+ public function bootstrapRestoreNodeList () {
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Restore node list: START');
+
+ // Get a wrapper instance
+ $wrapperInstance = ObjectFactory::createObjectByConfiguredName('node_list_db_wrapper_class');
+
+ // Now get a search criteria instance
+ $searchInstance = ObjectFactory::createObjectByConfiguredName('search_criteria_class');
+
+ // Search for the node number zero which is hard-coded the default
+ // @TODO Add some criteria, e.g. if the node is active or so
+ //$searchInstance->addCriteria(NodeListDatabaseWrapper::DB_COLUMN_NODE_NR, 1);
+ //$searchInstance->addCriteria(NodeListDatabaseWrapper::DB_COLUMN_NODE_TYPE, $this->getRequestInstance()->getRequestElement('mode'));
+ //$searchInstance->setLimit(1);
+
+ // Get a result back
+ $resultInstance = $wrapperInstance->doSelectByCriteria($searchInstance);
+
+ // Is it valid?
+ if ($resultInstance->next()) {
+ $this->partialStub('Do something for restoring the list.');
+ // Output message
+ //self::createDebugInstance(__CLASS__)->debugOutput('HUB: ');
+ } else {
+ // No previously saved node list found!
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: No previously saved node list found. This is fine.');
+ }
+
+ // Debug output
+ self::createDebugInstance(__CLASS__)->debugOutput('HUB: Restore node list: FINISHED.');
+ }
+
+ /**
+ * Getter for isActive attribute
+ *
+ * @return $isActive Whether the hub is active
+ */
+ public final function isNodeActive () {
+ return $this->isActive;
+ }
+
+ /**
+ * Enables (default) or disables isActive flag
+ *
+ * @param $isActive Whether the hub is active
+ * @return void
+ */
+ public final function enableIsActive ($isActive = true) {
+ $this->isActive = (bool) $isActive;
+ }
+
+ /**
+ * Checks whether this node accepts announcements
+ *
+ * @return $acceptAnnouncements Whether this node accepts announcements
+ */
+ public final function isAcceptingAnnouncements () {
+ // Check it (this node must be active and not shutdown!)
+ $acceptAnnouncements = (($this->acceptAnnouncements === true) && ($this->isNodeActive()));
+
+ // Return it
+ return $acceptAnnouncements;
+ }
+
+ /**
+ * Checks whether this node has attempted to announce itself
+ *
+ * @return $hasAnnounced Whether this node has attempted to announce itself
+ * @todo Add checking if this node has been announced to the sender node
+ */
+ public function ifNodeHasAnnounced () {
+ // Debug message
+ /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE: ifNodeHasAnnounced(): state=' . $this->getStateInstance()->getStateName());
+
+ // Simply check the state of this node
+ $hasAnnounced = ($this->getStateInstance() instanceof NodeAnnouncedState);
+
+ // Debug message
+ /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE: ifNodeHasAnnounced(): hasAnnounced=' . intval($hasAnnounced));
+
+ // Return it
+ return $hasAnnounced;
+ }
+
+ /**
+ * Checks whether this node has attempted to announce itself and completed it
+ *
+ * @return $hasAnnouncementCompleted Whether this node has attempted to announce itself and completed it
+ * @todo Add checking if this node has been announced to the sender node
+ */
+ public function ifNodeHasAnnouncementCompleted () {
+ // Debug message
+ /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE: ifNodeHasAnnouncementCompleted(): state=' . $this->getStateInstance()->getStateName());
+
+ // Simply check the state of this node
+ $hasAnnouncementCompleted = ($this->getStateInstance() instanceof NodeAnnouncementCompletedState);
+
+ // Debug message
+ /* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('NODE: ifNodeHasAnnouncementCompleted(): hasAnnouncementCompleted=' . intval($hasAnnouncementCompleted));
+
+ // Return it
+ return $hasAnnouncementCompleted;
+ }
+
+ /**
+ * Enables whether this node accepts announcements
+ *
+ * @param $acceptAnnouncements Whether this node accepts announcements (default: true)
+ * @return void
+ */
+ protected final function enableAcceptingAnnouncements ($acceptAnnouncements = true) {
+ $this->acceptAnnouncements = $acceptAnnouncements;
+ }
+
+ /**
+ * Checks wether this node is accepting node-list requests
+ *
+ * @return $acceptsRequest Wether this node accepts node-list requests
+ */
+ public function isAcceptingNodeListRequests () {
+ /*
+ * Only 'regular' nodes does not accept such requests, checking
+ * HubRegularNode is faster, but if e.g. HubRegularI2PNode will be
+ * added then the next check will be true.
+ */
+ $acceptsRequest = ((!$this instanceof HubRegularNode) && ($this->getRequestInstance()->getRequestElement('mode') != self::NODE_TYPE_REGULAR));
+
+ // Return it
+ return $acceptsRequest;
+ }
+
+ /**
+ * "Getter" for address:port combination
+ *
+ * @param $handlerInstance An instance of a Networkable class
+ * @return $addressPort A address:port combination for this node
+ */
+ public final function getAddressPort (Networkable $handlerInstance) {
+ // Construct config entry
+ $configEntry = 'node_' . $handlerInstance->getHandlerName() . '_listen_port';
+
+ // Get IP and port
+ $addressPort = $this->getConfigInstance()->detectServerAddress() . ':' . $this->getConfigInstance()->getConfigEntry($configEntry);
+
+ // Return it
+ return $addressPort;
+ }
+
+ /**
+ * Updates/refreshes node data (e.g. status).
+ *
+ * @return void
+ * @todo Find more to do here
+ */
+ public function updateNodeData () {
+ // Set some dummy configuration entries, e.g. node_status
+ $this->getConfigInstance()->setConfigEntry('node_status', $this->getStateInstance()->getStateName());
+ }
+
+ /**
+ * Handles message answer by given data array
+ *
+ * @param $messageData A valid answer message data array
+ * @param $packageInstance An instance of a Receivable class
+ * @return void
+ * @todo Handle thrown exception
+ */
+ public function handleAnswerStatusByMessageData (array $messageData, Receivable $packageInstance) {
+ // Is it not empty?
+ assert(!empty($messageData[NetworkPackage::MESSAGE_DATA_ANSWER_STATUS]));
+
+ // Construct configuration entry for handling class' name
+ $classConfigEntry = strtolower($messageData[NetworkPackage::MESSAGE_ARRAY_TYPE] . '_status_' . $messageData[NetworkPackage::MESSAGE_DATA_ANSWER_STATUS]) . '_handler_class';
+
+ // Try to get a class
+ $handlerInstance = ObjectFactory::createObjectByConfiguredName($classConfigEntry);
+
+ // Handle it there
+ $handlerInstance->handleAnswerMessageData($messageData, $packageInstance);
+ }
+
+ /**
+ * "Getter" for an array of all accepted object types
+ *
+ * @return $objectList Array of all accepted object types
+ */
+ public function getListFromAcceptedObjectTypes () {
+ // Get registry instance
+ $objectRegistryInstance = ObjectTypeRegistryFactory::createObjectTypeRegistryInstance();
+
+ // Get all entries
+ $objectList = $objectRegistryInstance->getEntries(XmlObjectRegistryTemplateEngine::OBJECT_TYPE_DATA_NAME);
+
+ // ... and return it
+ return $objectList;
+ }