*
* @author Roland Haeder <webmaster@ship-simu.org>
* @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 Hub Developer Team
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2011 Hub Developer Team
* @license GNU GPL 3.0 or any newer version
* @link http://www.ship-simu.org
*
*/
class BaseHubNode extends BaseHubSystem implements Updateable {
/**
- * Node id
+ * Node types
*/
- private $nodeId = '';
+ const NODE_TYPE_BOOT = 'boot';
+ const NODE_TYPE_MASTER = 'master';
+ const NODE_TYPE_LIST = 'list';
+ const NODE_TYPE_REGULAR = 'regular';
+
+ // Exception constants
+ const EXCEPTION_HUB_ALREADY_ANNOUNCED = 0xe00;
/**
* IP/port number of bootstrapping node
/**
* Query connector instance
*/
- private $queryInstance = null;
+ private $queryConnectorInstance = NULL;
/**
- * Listener pool instance
+ * Queue connector instance
*/
- private $listenerPoolInstance = null;
+ private $queueConnectorInstance = NULL;
/**
- * Wether the hub is active (true/false)
+ * Whether this node is anncounced (KEEP ON false!)
+ * @deprecated
*/
- private $hubIsActive = false;
+ private $hubIsAnnounced = false;
+
+ /**
+ * Whether this hub is active
+ */
+ private $isActive = false;
/**
* Protected constructor
protected function __construct ($className) {
// Call parent constructor
parent::__construct($className);
+
+ // Init state which sets the state to 'init'
+ $this->initState();
+ }
+
+ /**
+ * Initializes the node's state which sets it to 'init'
+ *
+ * @return void
+ */
+ private function initState() {
+ /*
+ * Get the state factory and create the initial state, we don't need
+ * the state instance here
+ */
+ NodeStateFactory::createNodeStateInstanceByName('init', $this);
}
/**
* @return void
*/
private final function setNodeId ($nodeId) {
- $this->nodeId = (string) $nodeId;
+ // Set it config now
+ $this->getConfigInstance()->setConfigEntry('node_id', (string) $nodeId);
}
/**
* Getter for node id
*
- * @return $nodeId Our new node id
+ * @return $nodeId Current node id
*/
private final function getNodeId () {
- return $this->nodeId;
+ // Get it from config
+ return $this->getConfigInstance()->getConfigEntry('node_id');
+ }
+
+ /**
+ * Setter for session id
+ *
+ * @param $sessionId Our new session id
+ * @return void
+ */
+ private final function setSessionId ($sessionId) {
+ $this->getConfigInstance()->setConfigEntry('session_id', (string) $sessionId);
+ }
+
+ /**
+ * Getter for session id
+ *
+ * @return $sessionId Current session id
+ */
+ public final function getSessionId () {
+ return $this->getConfigInstance()->getConfigEntry('session_id');
+ }
+
+ /**
+ * Setter for query instance
+ *
+ * @param $connectorInstance Our new query instance
+ * @return void
+ */
+ private final function setQueryConnectorInstance (Connectable $connectorInstance) {
+ $this->queryConnectorInstance = $connectorInstance;
+ }
+
+ /**
+ * Getter for query instance
+ *
+ * @return $connectorInstance Our new query instance
+ */
+ public final function getQueryConnectorInstance () {
+ return $this->queryConnectorInstance;
+ }
+
+ /**
+ * Setter for queue instance
+ *
+ * @param $connectorInstance Our new queue instance
+ * @return void
+ */
+ private final function setQueueConnectorInstance (Connectable $connectorInstance) {
+ $this->queueConnectorInstance = $connectorInstance;
}
/**
- * Checks wether the given IP address matches one of the bootstrapping nodes
+ * Getter for queue instance
+ *
+ * @return $connectorInstance Our new queue instance
+ */
+ public final function getQueueConnectorInstance () {
+ return $this->queueConnectorInstance;
+ }
+
+ /**
+ * Getter for boot IP/port combination
+ *
+ * @return $bootIpPort The IP/port combination of the boot node
+ */
+ protected final function getBootIpPort () {
+ return $this->bootIpPort;
+ }
+
+ /**
+ * Checks whether the given IP address matches one of the bootstrapping nodes
*
* @param $remoteAddr IP address to checkout against our bootstrapping list
- * @return $isFound Wether the IP is found
+ * @return $isFound Whether the IP is found
*/
protected function ifAddressMatchesBootstrappingNodes ($remoteAddr) {
// By default nothing is found
$isFound = false;
// Run through all configured IPs
- foreach (explode(',', $this->getConfigInstance()->readConfig('hub_bootstrap_nodes')) as $ipPort) {
+ foreach (explode(BaseHubSystem::BOOTSTRAP_NODES_SEPARATOR, $this->getConfigInstance()->getConfigEntry('hub_bootstrap_nodes')) as $ipPort) {
// Split it up in IP/port
$ipPortArray = explode(':', $ipPort);
$this->bootIpPort = $ipPort;
// Output message
- $this->getDebugInstance()->output(__FUNCTION__.'['.__LINE__.']: IP matches remote address ' . $ipPort . '.');
+ $this->debugOutput('BOOTSTRAP: ' . __FUNCTION__ . '[' . __LINE__ . ']: IP matches remote address ' . $ipPort . '.');
// Stop further searching
break;
- } elseif ($ipPortArray[0] == $this->getConfigInstance()->readConfig('node_listen_addr')) {
+ } elseif ($ipPortArray[0] == $this->getConfigInstance()->getConfigEntry('node_listen_addr')) {
// IP matches listen address. At this point we really don't care
- // if we can also listen on that address!
+ // if we can really listen on that address
$isFound = true;
// Remember the port number
$this->bootIpPort = $ipPort;
// Output message
- $this->getDebugInstance()->output(__FUNCTION__.'['.__LINE__.']: IP matches listen address ' . $ipPort . '.');
+ $this->debugOutput('BOOTSTRAP: ' . __FUNCTION__ . '[' . __LINE__ . ']: IP matches listen address ' . $ipPort . '.');
// Stop further searching
break;
$app = $this->getApplicationInstance();
// Output all lines
- $this->getDebugInstance()->output(' ');
- $this->getDebugInstance()->output($app->getAppName() . ' v' . $app->getAppVersion() . ' - ' . $this->getRequestInstance()->getRequestElement('mode') . ' mode active');
- $this->getDebugInstance()->output('Copyright (c) 2007 - 2008 Roland Haeder, 2009 Hub Developer Team');
- $this->getDebugInstance()->output(' ');
- $this->getDebugInstance()->output('This program comes with ABSOLUTELY NO WARRANTY; for details see docs/COPYING.');
- $this->getDebugInstance()->output('This is free software, and you are welcome to redistribute it under certain');
- $this->getDebugInstance()->output('conditions; see docs/COPYING for details.');
- $this->getDebugInstance()->output(' ');
- }
-
- /**
- * Do generic things for bootup phase. This can be e.g. checking if the
- * right node mode is selected for this hub's IP number.
- *
- * @return void
- * @todo This method is maybe not yet finished.
- */
- protected function doGenericBootstrapping () {
- // --------------------- Hub-id acquirement phase ---------------------
- // Acquire a hub-id. This step generates on first launch a new one and
- // on any later launches it will restore the hub-id from the database.
- // A passed 'nickname=xxx' argument will be used to add some
- // 'personality' to the hub.
- $this->bootstrapAcquireHubId();
-
- // ------------------- More generic bootstrap steps -------------------
- // Generate the session id which will only be stored in RAM and kept for
- // the whole "session".
- $this->bootstrapGenerateSessionId();
-
- // Restore a previously downloaded bootstrap-node list.
- $this->bootstrapRestoreNodeList();
-
- // @TODO Add some generic bootstrap steps
- $this->partialStub('Add some generic bootstrap steps here.');
+ $this->debugOutput(' ');
+ $this->debugOutput($app->getAppName() . ' v' . $app->getAppVersion() . ' - ' . $this->getRequestInstance()->getRequestElement('mode') . ' mode active');
+ $this->debugOutput('Copyright (c) 2007 - 2008 Roland Haeder, 2009 - 2011 Hub Developer Team');
+ $this->debugOutput(' ');
+ $this->debugOutput('This program comes with ABSOLUTELY NO WARRANTY; for details see docs/COPYING.');
+ $this->debugOutput('This is free software, and you are welcome to redistribute it under certain');
+ $this->debugOutput('conditions; see docs/COPYING for details.');
+ $this->debugOutput(' ');
}
/**
* based on many pseudo-random data. On any later run, unless the id
* got not removed from database, it will be restored from the database.
*
+ * @param $requestInstance A Requestable class
+ * @param $responseInstance A Responseable class
* @return void
*/
- private function bootstrapAcquireHubId () {
+ public function bootstrapAcquireNodeId (Requestable $requestInstance, Responseable $responseInstance) {
// Get a wrapper instance
$wrapperInstance = ObjectFactory::createObjectByConfiguredName('node_info_db_wrapper_class');
$this->setNodeId($this->getField(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_ID));
// Output message
- $this->getDebugInstance()->output('BOOTSTRAP: Re-using found node-id: ' . $this->getNodeId() . '');
+ $this->debugOutput('BOOTSTRAP: Re-using found node-id: ' . $this->getNodeId() . '');
} else {
// Get an RNG instance (Random Number Generator)
$rngInstance = ObjectFactory::createObjectByConfiguredName('rng_class');
// Generate a pseudo-random string
- $randomString = $rngInstance->randomString(255) . ':' . $this->getRequestInstance()->getRequestElement('mode');
+ $randomString = $rngInstance->randomString(255) . ':' . $this->getBootIpPort() . ':' . $this->getRequestInstance()->getRequestElement('mode');
// Get a crypto instance
$cryptoInstance = ObjectFactory::createObjectByConfiguredName('crypto_class');
- // Hash and encrypt the string so we become a "node id" aka Hub-Id
+ // Hash and encrypt the string so we become a node id (also documented as "hub id")
$this->setNodeId($cryptoInstance->hashString($cryptoInstance->encryptString($randomString)));
// Register the node id with our wrapper
$wrapperInstance->registerNodeId($this, $this->getRequestInstance());
// Output message
- $this->getDebugInstance()->output('BOOTSTRAP: Created new node-id: ' . $this->getNodeId() . '');
+ $this->debugOutput('BOOTSTRAP: Created new node-id: ' . $this->getNodeId() . '');
}
}
+ /**
+ * Generates a session id which will be sent to the other hubs and peers
+ *
+ * @return void
+ */
+ public function bootstrapGenerateSessionId () {
+ // Get an RNG instance
+ $rngInstance = ObjectFactory::createObjectByConfiguredName('rng_class');
+
+ // Generate a pseudo-random string
+ $randomString = $rngInstance->randomString(255) . ':' . $this->getBootIpPort() . ':' . $this->getRequestInstance()->getRequestElement('mode');
+
+ // Get a crypto instance
+ $cryptoInstance = ObjectFactory::createObjectByConfiguredName('crypto_class');
+
+ // Hash and encrypt the string so we become a "node id" aka Hub-Id
+ $this->setSessionId($cryptoInstance->hashString($cryptoInstance->encryptString($randomString)));
+
+ // Get a wrapper instance
+ $wrapperInstance = ObjectFactory::createObjectByConfiguredName('node_info_db_wrapper_class');
+
+ // Register the node id with our wrapper
+ $wrapperInstance->registerSessionId($this, $this->getRequestInstance());
+
+ // Output message
+ $this->debugOutput('BOOTSTRAP: Created new session-id: ' . $this->getSessionId() . '');
+
+ // Change the state because the node has auired a hub id
+ $this->getStateInstance()->nodeGeneratedSessionId();
+ }
+
/**
* Initializes queues which every node needs
*
* @return void
*/
protected function initGenericQueues () {
- // Set it
- $this->queryInstance = ObjectFactory::createObjectByConfiguredName('query_connector_class', array($this));
+ // Debug message
+ $this->debugOutput('BOOTSTRAP: Initialize queues: START');
+
+ // Set the query connector instance
+ $this->setQueryConnectorInstance(ObjectFactory::createObjectByConfiguredName('query_connector_class', array($this)));
+
+ // Run a test query
+ $this->getQueryConnectorInstance()->doTestQuery();
+
+ // Set the queue connector instance
+ $this->setQueueConnectorInstance(ObjectFactory::createObjectByConfiguredName('queue_connector_class', array($this)));
+
+ // Run a test queue
+ $this->getQueueConnectorInstance()->doTestQueue();
+
+ // Debug message
+ $this->debugOutput('BOOTSTRAP: Initialize queues: FINISHED');
}
-
+
/**
* Adds hub data elements to a given dataset instance
*
// Add the node id
$criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_NODE_ID, $this->getNodeId());
+
+ // Add the session id if acquired
+ if ($this->getSessionId() != '') {
+ $criteriaInstance->addCriteria(NodeInformationDatabaseWrapper::DB_COLUMN_SESSION_ID, $this->getSessionId());
+ } // END - if
}
/**
}
/**
- * Getter for $hubIsActive attribute
+ * 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.
*
- * @return $hubIsActive Wether the hub is activer
+ * @param $taskInstance The task instance running this announcement
+ * @return void
+ * @throws HubAlreadyAnnouncedException 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 HubAlreadyAnnouncedException($this, self::EXCEPTION_HUB_ALREADY_ANNOUNCED);
+ } // END - if
+
+ // Debug output
+ $this->debugOutput('HUB-Announcement: START (taskInstance=' . $taskInstance->__toString(). ')');
+
+ // Get a helper instance
+ $helperInstance = ObjectFactory::createObjectByConfiguredName('hub_announcement_helper_class', array($this));
+
+ // Load the announcement descriptor
+ $helperInstance->loadDescriptorXml();
+
+ // Set some dummy configuration entries, e.g. node_status
+ $this->getConfigInstance()->setConfigEntry('node_status', $this->getStateInstance()->getStateName());
+
+ // 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
+ $this->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 final function isHubActive () {
- return $this->hubIsActive;
+ public function doSelfConnection (Taskable $taskInstance) {
+ // Debug output
+ $this->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();
+
+ // And send the package away
+ $helperInstance->sendPackage($this);
+
+ // Debug output
+ $this->debugOutput('HUB: Self Connection: FINISHED');
}
/**
* Activates the hub by doing some final preparation and setting
* $hubIsActive to true
*
+ * @param $requestInstance A Requestable class
+ * @param $responseInstance A Responseable class
* @return void
*/
- public function activateHub () {
- // Checks wether a listener is still active and shuts it down if one
- // is still listening
- if (($this->checkIfListenerIsActive()) && ($this->isHubActive())) {
+ 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->getIsActive())) {
// Shutdown them down before they can hurt anything
$this->shutdownListenerPool();
} // END - if
- // Initialize the TCP/UDP listener pool
- $this->initializeListenerPool();
+ // Get the controller here
+ $controllerInstance = Registry::getRegistry()->getInstance('controller');
- // @TODO Do some final preparation
- $this->partialStub('Do some final preparation before the hub gots activated.');
+ // 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->hubIsActive = true;
+ $this->getStateInstance()->nodeIsActivated();
// ---------------------- Last step until here ------------------------
}
*
* @return void
*/
- private function initializeListenerPool () {
+ public function initializeListenerPool () {
+ // Debug output
+ $this->debugOutput('HUB: Initialize listener: START');
+
// Get a new pool instance
- $this->listenerPoolInstance = ObjectFactory::createObjectByConfiguredName('listener_pool_class', array($this));
+ $this->setListenerPoolInstance(ObjectFactory::createObjectByConfiguredName('listener_pool_class', array($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
+ $this->debugOutput('HUB: Initialize listener: FINISHED.');
+ }
+
+ /**
+ * Restores a previously stored node list from database
+ *
+ * @return void
+ */
+ public function bootstrapRestoreNodeList () {
+ // Debug output
+ $this->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()) {
+ $this->partialStub('Do something for restoring the list.');
+ // Output message
+ //$this->debugOutput('HUB: ');
+ } else {
+ // No previously saved node list found!
+ $this->debugOutput('HUB: No previously saved node list found. This is fine.');
+ }
+
+ // Debug output
+ $this->debugOutput('HUB: Restore node list: FINISHED.');
+ }
+
+ /**
+ * Getter for isActive attribute
+ *
+ * @return $isActive Whether the hub is active
+ */
+ public final function getIsActive () {
+ 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;
+ }
+
+ /**
+ * "Getter for address:port combination
+ *
+ * @param $handlerInstance A valid Networkable instance
+ * @return $addressPort A address:port combination for this node
+ */
+ public final function getAddressPort (Networkable $handlerInstance) {
+ // Construct config entry
+ $configEntry = 'node_' . $handlerInstance->getHandlerName() . '_listen_port';
- // Initialize the TCP listener
- $tcpListenerInstance = ObjectFactory::createObjectByConfiguredName('tcp_listener_class', array($this));
+ // Get IP and port
+ $addressPort = $this->getConfigInstance()->detectServerAddress() . ':' . $this->getConfigInstance()->getConfigEntry($configEntry);
- // Initialize the UDP listener
- $udpListenerInstance = ObjectFactory::createObjectByConfiguredName('udp_listener_class', array($this));
+ // Return it
+ return $addressPort;
}
}
projects / hub.git / blobdiff