1 /* Copyright (c) 2012-2021. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef KADEMLIA_NODE_HPP
8 #define KADEMLIA_NODE_HPP
10 #include "message.hpp"
11 #include "routing_table.hpp"
12 #include "s4u-dht-kademlia.hpp"
19 unsigned int id_; // node id - 160 bits
20 RoutingTable table; // node routing table
21 unsigned int find_node_success = 0; // Number of find_node which have succeeded.
22 unsigned int find_node_failed = 0; // Number of find_node which have failed.
24 simgrid::s4u::CommPtr receive_comm = nullptr;
25 Message* received_msg = nullptr;
26 explicit Node(unsigned int node_id) : id_(node_id), table(node_id) {}
27 Node(const Node&) = delete;
28 Node& operator=(const Node&) = delete;
29 unsigned int getId() const { return id_; }
31 bool join(unsigned int known_id);
32 void sendFindNode(unsigned int id, unsigned int destination) const;
33 unsigned int sendFindNodeToBest(const Answer* node_list) const;
34 void routingTableUpdate(unsigned int id);
35 std::unique_ptr<Answer> findClosest(unsigned int destination_id);
36 bool findNode(unsigned int id_to_find, bool count_in_stats);
38 void handleFindNode(const Message* msg);
39 void displaySuccessRate() const;
41 } // namespace kademlia
42 // identifier functions
43 unsigned int get_id_in_prefix(unsigned int id, unsigned int prefix);
44 unsigned int get_node_prefix(unsigned int id, unsigned int nb_bits);
46 #endif /* KADEMLIA_NODE_HPP */