1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
#include <cassert>
#include "salticidae/type.h"
#include "salticidae/netaddr.h"
#include "salticidae/network.h"
#include "salticidae/util.h"
#include "hotstuff/util.h"
#include "hotstuff/type.h"
#include "hotstuff/client.h"
using salticidae::Config;
using salticidae::ElapsedTime;
using salticidae::trim_all;
using salticidae::split;
using salticidae::MsgNetwork;
using hotstuff::ReplicaID;
using hotstuff::NetAddr;
using hotstuff::EventContext;
using hotstuff::uint256_t;
using hotstuff::MsgClient;
using hotstuff::CommandDummy;
using hotstuff::command_t;
using hotstuff::Finality;
using hotstuff::HotStuffError;
EventContext eb;
ReplicaID proposer;
size_t max_async_num;
int max_iter_num;
struct Request {
ReplicaID rid;
command_t cmd;
ElapsedTime et;
Request(ReplicaID rid, const command_t &cmd):
rid(rid), cmd(cmd) { et.start(); }
};
std::unordered_map<int, salticidae::RingBuffer> buffers;
std::unordered_map<const uint256_t, Request> waiting;
MsgNetwork<MsgClient> mn(eb, 10, 0, 2, 4096);
std::unordered_map<ReplicaID, MsgNetwork<MsgClient>::conn_t> conns;
std::vector<NetAddr> replicas;
void set_proposer(ReplicaID rid) {
proposer = rid;
auto it = conns.find(rid);
if (it == conns.end())
conns.insert(std::make_pair(rid, mn.create_conn(replicas[rid])));
}
void try_send() {
while (waiting.size() < max_async_num && max_iter_num)
{
auto cmd = CommandDummy::make_cmd();
MsgClient msg;
msg.gen_reqcmd(*cmd);
mn.send_msg(msg, conns.find(proposer)->second);
HOTSTUFF_LOG_INFO("send new cmd %.10s",
get_hex(cmd->get_hash()).c_str());
waiting.insert(std::make_pair(
cmd->get_hash(), Request(proposer, cmd)));
if (max_iter_num > 0)
max_iter_num--;
}
}
void on_receive(const MsgClient &msg, MsgNetwork<MsgClient>::conn_t) {
uint256_t cmd_hash;
Finality fin;
HOTSTUFF_LOG_DEBUG("got %s", std::string(msg).c_str());
if (!msg.verify_checksum())
HOTSTUFF_LOG_ERROR("incorrect checksum %08x", msg.get_checksum());
msg.parse_respcmd(cmd_hash, fin);
auto it = waiting.find(cmd_hash);
if (fin.rid != proposer)
{
HOTSTUFF_LOG_INFO("reconnect to the new proposer");
set_proposer(fin.rid);
}
if (fin.rid != it->second.rid)
{
MsgClient msg;
msg.gen_reqcmd(*(waiting.find(cmd_hash)->second.cmd));
mn.send_msg(msg, conns.find(proposer)->second);
HOTSTUFF_LOG_INFO("resend cmd %.10s",
get_hex(cmd_hash).c_str());
it->second.et.start();
it->second.rid = proposer;
return;
}
HOTSTUFF_LOG_INFO(
"got response for %.10s: <decision=%d, blk=%.10s>",
get_hex(cmd_hash).c_str(),
fin.decision,
get_hex(fin.blk_hash).c_str());
if (it == waiting.end()) return;
waiting.erase(it);
try_send();
}
std::pair<std::string, std::string> split_ip_port_cport(const std::string &s) {
auto ret = trim_all(split(s, ";"));
return std::make_pair(ret[0], ret[1]);
}
int main(int argc, char **argv) {
Config config("hotstuff.conf");
auto opt_idx = Config::OptValInt::create(0);
auto opt_replicas = Config::OptValStrVec::create();
auto opt_max_iter_num = Config::OptValInt::create(100);
auto opt_max_async_num = Config::OptValInt::create(10);
mn.reg_handler(hotstuff::RESP_CMD, on_receive);
try {
config.add_opt("idx", opt_idx, Config::SET_VAL);
config.add_opt("replica", opt_replicas, Config::APPEND);
config.add_opt("iter", opt_max_iter_num, Config::SET_VAL);
config.add_opt("max-async", opt_max_async_num, Config::SET_VAL);
config.parse(argc, argv);
auto idx = opt_idx->get();
max_iter_num = opt_max_iter_num->get();
max_async_num = opt_max_async_num->get();
std::vector<std::pair<std::string, std::string>> raw;
for (const auto &s: opt_replicas->get())
{
auto res = trim_all(split(s, ","));
if (res.size() != 2)
throw HotStuffError("format error");
raw.push_back(std::make_pair(res[0], res[1]));
}
if (!(0 <= idx && (size_t)idx < raw.size() && raw.size() > 0))
throw std::invalid_argument("out of range");
for (const auto &p: raw)
{
auto _p = split_ip_port_cport(p.first);
size_t _;
replicas.push_back(NetAddr(NetAddr(_p.first).ip, htons(stoi(_p.second, &_))));
}
set_proposer(idx);
try_send();
eb.dispatch();
} catch (HotStuffError &e) {
HOTSTUFF_LOG_ERROR("exception: %s", std::string(e).c_str());
}
return 0;
}
|