/*

 * Copyright (C) 2010  Miroslav Lichvar <mlichvar@redhat.com>

 * 

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 * 

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef NETWORK_H

#define NETWORK_H

#include <vector>

#include <deque>

using namespace std;

#include "node.h"

#include "stats.h"

struct Packet {

	double receive_time;

	double delay;

	int broadcast;

	unsigned int subnet;

	unsigned int from;

	unsigned int to;

	unsigned int src_port;

	unsigned int dst_port;

	unsigned int len;

	char data[MAX_PACKET_SIZE];

};

class Packet_queue {

	deque<Packet *> queue;

	public:

	Packet_queue();

	~Packet_queue();

	void insert(struct Packet *packet);

	struct Packet *dequeue();

	double get_timeout(double time) const;

};

class Network {

	double time;

	unsigned int subnets;

	unsigned int update_rate;

	unsigned int update_count;

	const char *socket_name;

	vector<Node *> nodes;

	vector<Generator *> link_delays;

	vector<Stats> stats;

	Generator_variables link_delay_variables;

	Packet_queue packet_queue;

	FILE *offset_log;

	FILE *freq_log;

	FILE *rawfreq_log;

	FILE *packet_log;

	void update();

	void update_clock_stats();

	public:

	Network(const char *socket, unsigned int n, unsigned int s, unsigned int rate);

	~Network();

	bool prepare_clients();

	Node *get_node(unsigned int node);

	void set_link_delay_generator(unsigned int from, unsigned int to, Generator *generator);

	bool run(double time_limit);

	void open_offset_log(const char *log);

	void open_freq_log(const char *log);

	void open_rawfreq_log(const char *log);

	void open_packet_log(const char *log);

	void print_stats(int verbosity) const;

	void reset_stats();

	void reset_clock_stats();

	void send(struct Packet *packet);

	double get_time() const;

	unsigned int get_subnets() const;

};

#endif