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/*
* connection.h
*
* Created on: Sep 23, 2017
* Author: root
*/
#ifndef CONNECTION_H_
#define CONNECTION_H_
extern int disable_anti_replay;
#include "connection.h"
#include "common.h"
#include "log.h"
#include "delay_manager.h"
#include "fd_manager.h"
#include "fec_manager.h"
extern int report_interval;
const int disable_conv_clear = 0;
void server_clear_function(u64_t u64);
template <class T>
struct conv_manager_t // manage the udp connections
{
// typedef hash_map map;
unordered_map<T, u32_t> data_to_conv; // conv and u64 are both supposed to be uniq
unordered_map<u32_t, T> conv_to_data;
lru_collector_t<u32_t> lru;
// unordered_map<u32_t,u64_t> conv_last_active_time;
// unordered_map<u32_t,u64_t>::iterator clear_it;
void (*additional_clear_function)(T data) = 0;
long long last_clear_time;
conv_manager_t() {
// clear_it=conv_last_active_time.begin();
long long last_clear_time = 0;
additional_clear_function = 0;
}
~conv_manager_t() {
clear();
}
int get_size() {
return conv_to_data.size();
}
void reserve() {
data_to_conv.reserve(10007);
conv_to_data.reserve(10007);
// conv_last_active_time.reserve(10007);
lru.mp.reserve(10007);
}
void clear() {
if (disable_conv_clear) return;
if (additional_clear_function != 0) {
for (auto it = conv_to_data.begin(); it != conv_to_data.end(); it++) {
// int fd=int((it->second<<32u)>>32u);
additional_clear_function(it->second);
}
}
data_to_conv.clear();
conv_to_data.clear();
lru.clear();
// conv_last_active_time.clear();
// clear_it=conv_last_active_time.begin();
}
u32_t get_new_conv() {
u32_t conv = get_fake_random_number_nz();
while (conv_to_data.find(conv) != conv_to_data.end()) {
conv = get_fake_random_number_nz();
}
return conv;
}
int is_conv_used(u32_t conv) {
return conv_to_data.find(conv) != conv_to_data.end();
}
int is_data_used(T data) {
return data_to_conv.find(data) != data_to_conv.end();
}
u32_t find_conv_by_data(T data) {
return data_to_conv[data];
}
T find_data_by_conv(u32_t conv) {
return conv_to_data[conv];
}
int update_active_time(u32_t conv) {
// return conv_last_active_time[conv]=get_current_time();
lru.update(conv);
return 0;
}
int insert_conv(u32_t conv, T data) {
data_to_conv[data] = conv;
conv_to_data[conv] = data;
// conv_last_active_time[conv]=get_current_time();
lru.new_key(conv);
return 0;
}
int erase_conv(u32_t conv) {
if (disable_conv_clear) return 0;
T data = conv_to_data[conv];
if (additional_clear_function != 0) {
additional_clear_function(data);
}
conv_to_data.erase(conv);
data_to_conv.erase(data);
// conv_last_active_time.erase(conv);
lru.erase(conv);
return 0;
}
int clear_inactive(char *info = 0) {
if (get_current_time() - last_clear_time > conv_clear_interval) {
last_clear_time = get_current_time();
return clear_inactive0(info);
}
return 0;
}
int clear_inactive0(char *info) {
if (disable_conv_clear) return 0;
unordered_map<u32_t, u64_t>::iterator it;
unordered_map<u32_t, u64_t>::iterator old_it;
// map<uint32_t,uint64_t>::iterator it;
int cnt = 0;
// it=clear_it;
int size = lru.size();
int num_to_clean = size / conv_clear_ratio + conv_clear_min; // clear 1/10 each time,to avoid latency glitch
num_to_clean = min(num_to_clean, size);
my_time_t current_time = get_current_time();
for (;;) {
if (cnt >= num_to_clean) break;
if (lru.empty()) break;
u32_t conv;
my_time_t ts = lru.peek_back(conv);
if (current_time - ts < conv_timeout) break;
erase_conv(conv);
if (info == 0) {
mylog(log_info, "conv %x cleared\n", conv);
} else {
mylog(log_info, "[%s]conv %x cleared\n", info, conv);
}
cnt++;
}
return 0;
}
/*
conv_manager_t();
~conv_manager_t();
int get_size();
void reserve();
void clear();
u32_t get_new_conv();
int is_conv_used(u32_t conv);
int is_u64_used(T u64);
u32_t find_conv_by_u64(T u64);
T find_u64_by_conv(u32_t conv);
int update_active_time(u32_t conv);
int insert_conv(u32_t conv,T u64);
int erase_conv(u32_t conv);
int clear_inactive(char * ip_port=0);
int clear_inactive0(char * ip_port);*/
}; // g_conv_manager;
struct inner_stat_t {
u64_t input_packet_num;
u64_t input_packet_size;
u64_t output_packet_num;
u64_t output_packet_size;
};
struct stat_t {
u64_t last_report_time;
inner_stat_t normal_to_fec;
inner_stat_t fec_to_normal;
stat_t() {
clear();
}
void clear(){
memset(this, 0, sizeof(stat_t));
}
void report_as_client() {
if (report_interval != 0 && get_current_time() - last_report_time > u64_t(report_interval) * 1000) {
last_report_time = get_current_time();
inner_stat_t &a = normal_to_fec;
inner_stat_t &b = fec_to_normal;
mylog(log_info, "[report]client-->server:(original:%llu pkt;%llu byte) (fec:%llu pkt,%llu byte) server-->client:(original:%llu pkt;%llu byte) (fec:%llu pkt;%llu byte)\n",
a.input_packet_num, a.input_packet_size, a.output_packet_num, a.output_packet_size,
b.output_packet_num, b.output_packet_size, b.input_packet_num, b.input_packet_size);
}
}
void report_as_server(address_t &addr) {
if (report_interval != 0 && get_current_time() - last_report_time > u64_t(report_interval) * 1000) {
last_report_time = get_current_time();
inner_stat_t &a = fec_to_normal;
inner_stat_t &b = normal_to_fec;
mylog(log_info, "[report][%s]client-->server:(original:%llu pkt;%llu byte) (fec:%llu pkt;%llu byte) server-->client:(original:%llu pkt;%llu byte) (fec:%llu pkt;%llu byte)\n",
addr.get_str(),
a.output_packet_num, a.output_packet_size, a.input_packet_num, a.input_packet_size,
b.input_packet_num, b.input_packet_size, b.output_packet_num, b.output_packet_size);
}
}
};
struct conn_info_t : not_copy_able_t // stores info for a raw connection.for client ,there is only one connection,for server there can be thousand of connection since server can
// handle multiple clients
{
union tmp_union_t {
conv_manager_t<address_t> c;
conv_manager_t<u64_t> s;
// avoid templates here and there, avoid pointer and type cast
tmp_union_t() {
if (program_mode == client_mode) {
new (&c) conv_manager_t<address_t>();
} else {
assert(program_mode == server_mode);
new (&s) conv_manager_t<u64_t>();
}
}
~tmp_union_t() {
if (program_mode == client_mode) {
c.~conv_manager_t<address_t>();
} else {
assert(program_mode == server_mode);
s.~conv_manager_t<u64_t>();
}
}
} conv_manager;
fec_encode_manager_t fec_encode_manager;
fec_decode_manager_t fec_decode_manager;
ev_timer timer;
// my_timer_t timer;
u64_t last_active_time;
stat_t stat;
struct ev_loop *loop = 0;
int local_listen_fd;
int remote_fd; // only used for client
fd64_t remote_fd64; // only used for client
// ip_port_t ip_port;
address_t addr; // only used for server
conn_info_t() {
if (program_mode == server_mode) {
conv_manager.s.additional_clear_function = server_clear_function;
} else {
assert(program_mode == client_mode);
}
}
~conn_info_t() {
if (loop)
ev_timer_stop(loop, &timer);
}
void update_active_time() {
last_active_time = get_current_time();
}
/*
conn_info_t(const conn_info_t &b)
{
assert(0==1);
}*/
};
/*
struct conn_manager_t //manager for connections. for client,we dont need conn_manager since there is only one connection.for server we use one conn_manager for all connections
{
unordered_map<u64_t,conn_info_t*> mp;//<ip,port> to conn_info_t;
unordered_map<u64_t,conn_info_t*>::iterator clear_it;
long long last_clear_time;
conn_manager_t();
conn_manager_t(const conn_info_t &b)
{
assert(0==1);
}
int exist(ip_port_t);
conn_info_t *& find_p(ip_port_t); //be aware,the adress may change after rehash
conn_info_t & find(ip_port_t) ; //be aware,the adress may change after rehash
int insert(ip_port_t);
int erase(unordered_map<u64_t,conn_info_t*>::iterator erase_it);
int clear_inactive();
int clear_inactive0();
};*/
struct conn_manager_t // manager for connections. for client,we dont need conn_manager since there is only one connection.for server we use one conn_manager for all connections
{
unordered_map<address_t, conn_info_t *> mp; // put it at end so that it de-consturcts first
unordered_map<address_t, conn_info_t *>::iterator clear_it;
long long last_clear_time;
conn_manager_t();
int exist(address_t addr);
conn_info_t *&find_insert_p(address_t addr); // be aware,the adress may change after rehash //not true?
conn_info_t &find_insert(address_t addr); // be aware,the adress may change after rehash
int erase(unordered_map<address_t, conn_info_t *>::iterator erase_it);
int clear_inactive();
int clear_inactive0();
};
extern conn_manager_t conn_manager;
#endif /* CONNECTION_H_ */
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