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/**
* Copyright (c) 2018 Cornell University.
*
* Author: Ted Yin <[email protected]>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <cstdio>
#include <string>
#include <functional>
#include <openssl/rand.h>
#include "salticidae/msg.h"
#include "salticidae/event.h"
#include "salticidae/network.h"
#include "salticidae/stream.h"
using salticidae::NetAddr;
using salticidae::DataStream;
using salticidae::MsgNetwork;
using salticidae::ConnPool;
using salticidae::TimerEvent;
using salticidae::EventContext;
using salticidae::htole;
using salticidae::letoh;
using salticidae::bytearray_t;
using salticidae::uint256_t;
using salticidae::static_pointer_cast;
using salticidae::Config;
using salticidae::ThreadCall;
using salticidae::BoxObj;
using std::placeholders::_1;
using std::placeholders::_2;
struct MsgRand {
static const uint8_t opcode = 0x0;
DataStream serialized;
uint32_t view;
bytearray_t bytes;
uint256_t hash;
MsgRand(uint32_t _view, size_t size) {
bytearray_t bytes;
bytes.resize(size);
RAND_bytes(&bytes[0], size);
hash = salticidae::get_hash(bytes);
serialized << htole(_view) << std::move(bytes);
}
MsgRand(DataStream &&s) {
s >> view;
view = letoh(view);
bytes = s;
}
};
struct MsgAck {
static const uint8_t opcode = 0x1;
DataStream serialized;
uint32_t view;
uint256_t hash;
MsgAck(uint32_t _view, const uint256_t &hash) {
serialized << htole(_view) << hash;
}
MsgAck(DataStream &&s) {
s >> view >> hash;
view = letoh(view);
}
};
const uint8_t MsgRand::opcode;
const uint8_t MsgAck::opcode;
using MyNet = salticidae::PeerNetwork<uint8_t>;
std::vector<NetAddr> addrs;
struct TestContext {
TimerEvent timer;
int state;
uint32_t view;
uint256_t hash;
size_t ncompleted;
TestContext(): view(0), ncompleted(0) {}
};
struct AppContext {
NetAddr addr;
EventContext ec;
BoxObj<MyNet> net;
BoxObj<ThreadCall> tcall;
std::unordered_map<NetAddr, TestContext> tc;
};
void install_proto(AppContext &app, const size_t &seg_buff_size) {
auto &ec = app.ec;
auto &net = *app.net;
auto send_rand = [&](int size, const MyNet::conn_t &conn, TestContext &tc) {
MsgRand msg(tc.view, size);
tc.hash = msg.hash;
net.send_msg(std::move(msg), conn);
};
net.reg_conn_handler([](const ConnPool::conn_t &conn, bool connected) {
return true;
});
net.reg_peer_handler([&, send_rand](const MyNet::conn_t &conn, bool connected) {
if (connected)
{
auto addr = conn->get_peer_addr();
auto &tc = app.tc[addr];
tc.state = 1;
tc.view++;
send_rand(tc.state, conn, tc);
}
});
net.reg_error_handler([ec](const std::exception_ptr _err, bool fatal) {
try {
std::rethrow_exception(_err);
} catch (const std::exception & err) {
SALTICIDAE_LOG_WARN("captured %s error: %s",
fatal ? "fatal" : "recoverable", err.what());
}
});
net.reg_handler([&](MsgRand &&msg, const MyNet::conn_t &conn) {
uint256_t hash = salticidae::get_hash(msg.bytes);
net.send_msg(MsgAck(msg.view, hash), conn);
});
net.reg_handler([&, send_rand](MsgAck &&msg, const MyNet::conn_t &conn) {
auto addr = conn->get_peer_addr();
if (addr.is_null()) return;
auto &tc = app.tc[addr];
if (msg.view != tc.view)
{
SALTICIDAE_LOG_WARN("dropping MsgAck from a stale view");
return;
}
if (msg.hash != tc.hash)
{
SALTICIDAE_LOG_ERROR("corrupted I/O!");
exit(1);
}
if (tc.state == seg_buff_size * 2)
{
send_rand(tc.state, conn, tc);
tc.state = -1;
tc.timer = TimerEvent(ec, [&, conn](TimerEvent &) {
tc.ncompleted++;
net.terminate(conn);
std::string s;
for (const auto &p: app.tc)
s += salticidae::stringprintf(" %d(%d)", ntohs(p.first.port), p.second.ncompleted);
SALTICIDAE_LOG_INFO("%d completed:%s", ntohs(app.addr.port), s.c_str());
SALTICIDAE_LOG_INFO("%d npending: %lu", ntohs(app.addr.port), net.get_npending());
});
double t = salticidae::gen_rand_timeout(5);
tc.timer.add(t);
SALTICIDAE_LOG_INFO("rand-bomboard phase, ending in %.2f secs", t);
}
else if (tc.state == -1)
send_rand(rand() % (seg_buff_size * 10), conn, tc);
else
send_rand(++tc.state, conn, tc);
});
}
int main(int argc, char **argv) {
Config config;
auto opt_no_msg = Config::OptValFlag::create(false);
auto opt_npeers = Config::OptValInt::create(5);
auto opt_seg_buff_size = Config::OptValInt::create(4096);
auto opt_nworker = Config::OptValInt::create(2);
auto opt_conn_timeout = Config::OptValDouble::create(5);
auto opt_ping_peroid = Config::OptValDouble::create(2);
auto opt_help = Config::OptValFlag::create(false);
config.add_opt("no-msg", opt_no_msg, Config::SWITCH_ON);
config.add_opt("npeers", opt_npeers, Config::SET_VAL);
config.add_opt("seg-buff-size", opt_seg_buff_size, Config::SET_VAL);
config.add_opt("nworker", opt_nworker, Config::SET_VAL);
config.add_opt("conn-timeout", opt_conn_timeout, Config::SET_VAL);
config.add_opt("ping-period", opt_ping_peroid, Config::SET_VAL);
config.add_opt("help", opt_help, Config::SWITCH_ON, 'h', "show this help info");
config.parse(argc, argv);
if (opt_help->get())
{
config.print_help();
exit(0);
}
size_t seg_buff_size = opt_seg_buff_size->get();
for (int i = 0; i < opt_npeers->get(); i++)
addrs.push_back(NetAddr("127.0.0.1:" + std::to_string(12345 + i)));
std::vector<AppContext> apps;
std::vector<std::thread> threads;
apps.resize(addrs.size());
for (size_t i = 0; i < apps.size(); i++)
{
auto &a = apps[i];
a.addr = addrs[i];
a.net = new MyNet(a.ec, MyNet::Config(
salticidae::ConnPool::Config()
.nworker(opt_nworker->get())
.seg_buff_size(seg_buff_size))
.conn_timeout(opt_conn_timeout->get())
.ping_period(opt_ping_peroid->get()));
a.tcall = new ThreadCall(a.ec);
if (!opt_no_msg->get())
install_proto(a, seg_buff_size);
a.net->start();
}
for (auto &a: apps)
threads.push_back(std::thread([&]() {
a.net->listen(a.addr);
for (auto &paddr: addrs)
if (paddr != a.addr) a.net->add_peer(paddr);
a.ec.dispatch();}));
EventContext ec;
auto shutdown = [&](int) {
for (auto &a: apps)
{
auto &tc = a.tcall;
tc->async_call([ec=a.ec](ThreadCall::Handle &) {
ec.stop();
});
}
for (auto &t: threads) t.join();
ec.stop();
};
salticidae::SigEvent ev_sigint(ec, shutdown);
salticidae::SigEvent ev_sigterm(ec, shutdown);
ev_sigint.add(SIGINT);
ev_sigterm.add(SIGTERM);
ec.dispatch();
return 0;
}
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