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#include <cassert>
#include "salticidae/type.h"
#include "salticidae/netaddr.h"
#include "salticidae/network.h"
#include "salticidae/util.h"
#include "util.h"
#include "type.h"
#include "client.h"
using salticidae::NetAddr;
using salticidae::Config;
using salticidae::ElapsedTime;
using salticidae::EventContext;
using salticidae::Event;
using salticidae::bytearray_t;
using salticidae::trim_all;
using salticidae::split;
using hotstuff::uint256_t;
using hotstuff::MsgClient;
using hotstuff::CommandDummy;
using hotstuff::Finality;
size_t max_async_num = 10;
int max_iter_num = 100;
struct Request {
ElapsedTime et;
Request() { et.start(); }
};
std::unordered_map<int, salticidae::RingBuffer> buffers;
std::unordered_map<const uint256_t, Request> waiting;
int connect(const NetAddr &node) {
int fd;
if ((fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
assert(0);
struct sockaddr_in sockin;
memset(&sockin, 0, sizeof(struct sockaddr_in));
sockin.sin_family = AF_INET;
sockin.sin_addr.s_addr = node.ip;
sockin.sin_port = node.port;
if (connect(fd, (struct sockaddr *)&sockin, sizeof(struct sockaddr_in)) == -1)
assert(0);
HOTSTUFF_LOG_INFO("connected to %s", std::string(node).c_str());
return fd;
}
void write_msg(int fd, const MsgClient &msg) {
bytearray_t msg_data = msg.serialize();
if (write(fd, msg_data.data(), msg_data.size()) != (ssize_t)msg_data.size())
assert(0);
}
void read_msg(int fd, MsgClient &msg) {
static const size_t BUFF_SEG_SIZE = 1024;
ssize_t ret;
auto &buffer = buffers[fd];
bool read_body = false;
for (;;)
{
bytearray_t buff_seg;
if (!read_body && buffer.size() >= MsgClient::header_size)
{
buff_seg = buffer.pop(MsgClient::header_size);
msg = MsgClient(buff_seg.data());
read_body = true;
}
if (read_body && buffer.size() >= msg.get_length())
{
buff_seg = buffer.pop(msg.get_length());
msg.set_payload(std::move(buff_seg));
return;
}
buff_seg.resize(BUFF_SEG_SIZE);
ret = read(fd, buff_seg.data(), BUFF_SEG_SIZE);
assert(ret != -1);
if (ret > 0)
{
buff_seg.resize(ret);
buffer.push(std::move(buff_seg));
}
}
}
void try_send(int fd) {
while (waiting.size() < max_async_num && max_iter_num)
{
auto cmd = CommandDummy::make_cmd();
MsgClient msg;
msg.gen_reqcmd(*cmd);
write_msg(fd, msg);
HOTSTUFF_LOG_INFO("send new cmd %.10s",
get_hex(cmd->get_hash()).c_str());
waiting.insert(std::make_pair(
cmd->get_hash(), Request()));
if (max_iter_num > 0)
max_iter_num--;
}
}
void on_receive(int fd) {
MsgClient msg;
uint256_t cmd_hash;
Finality fin;
read_msg(fd, msg);
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);
HOTSTUFF_LOG_INFO(
"fd %d got response for %.10s: <decision=%d, blk=%.10s>",
fd, get_hex(cmd_hash).c_str(),
fin.decision,
get_hex(fin.blk_hash).c_str());
auto it = waiting.find(cmd_hash);
if (it == waiting.end()) return;
waiting.erase(it);
try_send(fd);
}
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]);
}
Event *on_receive_ev;
int main(int argc, char **argv) {
Config config("hotstuff.conf");
std::vector<NetAddr> peers2;
EventContext eb;
auto opt_idx = Config::OptValInt::create(-1);
auto opt_server_addr = Config::OptValStr::create("127.0.0.1:2234");
auto opt_replicas = Config::OptValStrVec::create();
auto opt_max_iter_num = Config::OptValInt::create();
try {
config.add_opt("idx", opt_idx, Config::SET_VAL);
config.add_opt("server", opt_server_addr, Config::SET_VAL);
config.add_opt("replica", opt_replicas, Config::APPEND);
config.add_opt("ntx", opt_max_iter_num, Config::SET_VAL);
config.parse(argc, argv);
auto idx = opt_idx->get();
max_iter_num = opt_max_iter_num->get();
std::vector<std::pair<std::string, std::string>> replicas;
for (const auto &s: opt_replicas->get())
{
auto res = trim_all(split(s, ","));
assert(res.size() == 2);
replicas.push_back(std::make_pair(res[0], res[1]));
}
NetAddr server(opt_server_addr->get());
if (-1 < idx && (size_t)idx < replicas.size() &&
replicas.size() > 0)
{
for (const auto &p: replicas)
{
auto _p = split_ip_port_cport(p.first);
size_t _;
peers2.push_back(NetAddr(NetAddr(_p.first).ip, htons(stoi(_p.second, &_))));
}
server = peers2[idx];
}
int fd = connect(server);
on_receive_ev = new Event{eb, fd, EV_READ, [](int fd, short) {
on_receive(fd);
on_receive_ev->add();
}};
on_receive_ev->add();
try_send(fd);
eb.dispatch();
} catch (hotstuff::HotStuffError &e) {
HOTSTUFF_LOG_ERROR("exception: %s", std::string(e).c_str());
}
return 0;
}
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