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/**
* Copyright 2018 VMware
* Copyright 2018 Ted Yin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cassert>
#include <random>
#include <signal.h>
#include <sys/time.h>
#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 hotstuff::ReplicaID;
using hotstuff::NetAddr;
using hotstuff::EventContext;
using hotstuff::MsgReqCmd;
using hotstuff::MsgRespCmd;
using hotstuff::CommandDummy;
using hotstuff::Finality;
using hotstuff::HotStuffError;
using hotstuff::uint256_t;
using hotstuff::opcode_t;
using hotstuff::command_t;
EventContext ec;
ReplicaID proposer;
size_t max_async_num;
int max_iter_num;
uint32_t cid;
uint32_t cnt = 0;
uint32_t nfaulty;
struct Request {
ReplicaID rid;
command_t cmd;
size_t confirmed;
salticidae::ElapsedTime et;
Request(ReplicaID rid, const command_t &cmd):
rid(rid), cmd(cmd), confirmed(0) { et.start(); }
};
using Net = salticidae::MsgNetwork<opcode_t>;
std::unordered_map<ReplicaID, Net::conn_t> conns;
std::unordered_map<const uint256_t, Request> waiting;
std::vector<NetAddr> replicas;
std::vector<std::pair<struct timeval, double>> elapsed;
Net mn(ec, Net::Config());
void connect_all() {
for (size_t i = 0; i < replicas.size(); i++)
conns.insert(std::make_pair(i, mn.connect(replicas[i])));
}
void set_proposer(ReplicaID rid) {
proposer = rid;
// auto it = conns.find(rid);
// if (it == conns.end())
// conns.insert(std::make_pair(rid, mn.connect(replicas[rid])));
}
bool try_send(bool check = true) {
if ((!check || waiting.size() < max_async_num) && max_iter_num)
{
auto cmd = new CommandDummy(cid, cnt++);
//mn.send_msg(MsgReqCmd(*cmd), *conns.at(proposer));
MsgReqCmd msg(*cmd);
for (auto &p: conns) mn.send_msg(msg, p.second);
#ifndef HOTSTUFF_ENABLE_BENCHMARK
HOTSTUFF_LOG_INFO("send new cmd %.10s",
get_hex(cmd->get_hash()).c_str());
#endif
waiting.insert(std::make_pair(
cmd->get_hash(), Request(proposer, cmd)));
if (max_iter_num > 0)
max_iter_num--;
return true;
}
return false;
}
void client_resp_cmd_handler(MsgRespCmd &&msg, const Net::conn_t &) {
auto &fin = msg.fin;
HOTSTUFF_LOG_DEBUG("got %s", std::string(msg.fin).c_str());
const uint256_t &cmd_hash = fin.cmd_hash;
auto it = waiting.find(cmd_hash);
auto &et = it->second.et;
if (it == waiting.end()) return;
et.stop();
// if (fin.rid != proposer)
// {
// HOTSTUFF_LOG_INFO("reconnect to the new proposer");
// set_proposer(fin.rid);
// }
// if (fin.rid != it->second.rid)
// {
// mn.send_msg(MsgReqCmd(*(waiting.find(cmd_hash)->second.cmd)),
// *conns.at(proposer));
//#ifndef HOTSTUFF_ENABLE_BENCHMARK
// HOTSTUFF_LOG_INFO("resend cmd %.10s",
// get_hex(cmd_hash).c_str());
//#endif
// et.start();
// it->second.rid = proposer;
// return;
// }
// if (++it->second.confirmed <= nfaulty) return; // wait for f + 1 ack
#ifndef HOTSTUFF_ENABLE_BENCHMARK
HOTSTUFF_LOG_INFO("got %s, wall: %.3f, cpu: %.3f",
std::string(fin).c_str(),
et.elapsed_sec, et.cpu_elapsed_sec);
#else
struct timeval tv;
gettimeofday(&tv, nullptr);
elapsed.push_back(std::make_pair(tv, et.elapsed_sec));
#endif
waiting.erase(it);
#ifndef HOTSTUFF_AUTOCLI
while (try_send());
#endif
}
#ifdef HOTSTUFF_AUTOCLI
void client_demand_cmd_handler(hotstuff::MsgDemandCmd &&msg, const Net::conn_t &) {
for (size_t i = 0; i < msg.ncmd; i++)
try_send(false);
}
#endif
std::pair<std::string, std::string> split_ip_port_cport(const std::string &s) {
auto ret = salticidae::trim_all(salticidae::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);
auto opt_cid = Config::OptValInt::create(-1);
auto shutdown = [&](int) { ec.stop(); };
salticidae::SigEvent ev_sigint(ec, shutdown);
salticidae::SigEvent ev_sigterm(ec, shutdown);
ev_sigint.add(SIGINT);
ev_sigterm.add(SIGTERM);
mn.reg_handler(client_resp_cmd_handler);
#ifdef HOTSTUFF_AUTOCLI
mn.reg_handler(client_demand_cmd_handler);
#endif
mn.start();
config.add_opt("idx", opt_idx, Config::SET_VAL);
config.add_opt("cid", opt_cid, 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 = salticidae::trim_all(salticidae::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");
cid = opt_cid->get() != -1 ? opt_cid->get() : idx;
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, &_))));
}
nfaulty = (replicas.size() - 1) / 3;
HOTSTUFF_LOG_INFO("nfaulty = %zu", nfaulty);
connect_all();
set_proposer(idx);
while (try_send());
ec.dispatch();
#ifdef HOTSTUFF_ENABLE_BENCHMARK
for (const auto &e: elapsed)
{
char fmt[64];
struct tm *tmp = localtime(&e.first.tv_sec);
strftime(fmt, sizeof fmt, "%Y-%m-%d %H:%M:%S.%%06u [hotstuff info] %%.6f\n", tmp);
fprintf(stderr, fmt, e.first.tv_usec, e.second);
}
#endif
return 0;
}
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