3 * An interface for DHTs
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 interface DistributableNode extends Distributable {
26 * Finds a node locally by given session id
28 * @param $sessionId Session id to lookup
29 * @return $nodeData Node-data array
31 function findNodeLocalBySessionId ($sessionId);
34 * Registers an other node with this node by given message data. The
35 * following data must always be present:
37 * - session-id (for finding the node's record together with below data)
38 * - external-ip (hostname or IP number)
39 * - listen-port (TCP/UDP listen port for inbound connections)
41 * @param $messageData An array with all minimum message data
42 * @param $handlerInstance An instance of a HandleableDataSet class
43 * @param $forceUpdate Optionally force update, don't register (default: register if not found)
46 function registerNodeByMessageData (array $messageData, HandleableDataSet $handlerInstance, $forceUpdate = FALSE);
49 * Queries the local DHT data(base) for a node list with all supported
50 * object types except the node by given session id.
52 * @param $messageData An array with message data from a node_list request
53 * @param $handlerInstance An instance of a HandleableDataSet class
54 * @param $excludeKey Array key which should be excluded
55 * @param $andKey Array of $separator-separated list of elements which all must match
56 * @param $separator Sepator char (1st parameter for explode() call)
57 * @return $nodeList An array with all found nodes
59 function queryLocalNodeListExceptByMessageData (array $messageData, HandleableDataSet $handlerInstance, $excludeKey, $andKey, $separator);
62 * Inserts given node list array (from earlier database result produced by
63 * an other node) into the DHT. This array origins from above method
64 * queryLocalNodeListExceptByMessageData().
66 * @param $nodeList An array from an earlier database result instance
69 function insertNodeList (array $nodeList);
72 * Checks whether there are entries in "INSERT" node data stack
74 * @return $isPending Whether there are pending entries
76 function ifInsertNodeDataPending ();
79 * Checks whether there are unpublished entries
81 * @return $hasUnpublished Whether there are unpublished entries
83 function hasUnpublishedEntries ();
86 * Initializes publication of DHT entries. This does only prepare
87 * publication. The next step is to pickup such prepared entries and publish
88 * them by uploading to other (recently appeared) DHT members.
92 function initEntryPublication ();
95 * Checks whether there are entries pending publication
97 * @return $isPending Whether there are entries pending publication
99 function hasEntriesPendingPublication ();
102 * Publishes next entry found in stack. This method shall also update the
103 * corresponding dabase entry.
107 function publishEntry ();