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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. 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.
*/
/*
* Copyright (C) 2015 Cloudius Systems, Ltd.
*/
#include <seastar/http/response_parser.hh>
#include <seastar/core/print.hh>
#include <seastar/core/reactor.hh>
#include <seastar/core/app-template.hh>
#include <seastar/core/future-util.hh>
#include <seastar/core/distributed.hh>
#include <seastar/core/semaphore.hh>
#include <seastar/core/future-util.hh>
#include <chrono>
using namespace seastar;
template <typename... Args>
void http_debug(const char* fmt, Args&&... args) {
#if HTTP_DEBUG
print(fmt, std::forward<Args>(args)...);
#endif
}
class http_client {
private:
unsigned _duration;
unsigned _conn_per_core;
unsigned _reqs_per_conn;
std::vector<connected_socket> _sockets;
semaphore _conn_connected{0};
semaphore _conn_finished{0};
timer<> _run_timer;
bool _timer_based;
bool _timer_done{false};
uint64_t _total_reqs{0};
public:
http_client(unsigned duration, unsigned total_conn, unsigned reqs_per_conn)
: _duration(duration)
, _conn_per_core(total_conn / smp::count)
, _reqs_per_conn(reqs_per_conn)
, _run_timer([this] { _timer_done = true; })
, _timer_based(reqs_per_conn == 0) {
}
class connection {
private:
connected_socket _fd;
input_stream<char> _read_buf;
output_stream<char> _write_buf;
http_response_parser _parser;
http_client* _http_client;
uint64_t _nr_done{0};
public:
connection(connected_socket&& fd, http_client* client)
: _fd(std::move(fd))
, _read_buf(_fd.input())
, _write_buf(_fd.output())
, _http_client(client){
}
uint64_t nr_done() {
return _nr_done;
}
future<> do_req() {
return _write_buf.write("GET / HTTP/1.1\r\nHost: 127.0.0.1:10000\r\n\r\n").then([this] {
return _write_buf.flush();
}).then([this] {
_parser.init();
return _read_buf.consume(_parser).then([this] {
// Read HTTP response header first
if (_parser.eof()) {
return make_ready_future<>();
}
auto _rsp = _parser.get_parsed_response();
auto it = _rsp->_headers.find("Content-Length");
if (it == _rsp->_headers.end()) {
fmt::print("Error: HTTP response does not contain: Content-Length\n");
return make_ready_future<>();
}
auto content_len = std::stoi(it->second);
http_debug("Content-Length = %d\n", content_len);
// Read HTTP response body
return _read_buf.read_exactly(content_len).then([this] (temporary_buffer<char> buf) {
_nr_done++;
http_debug("%s\n", buf.get());
if (_http_client->done(_nr_done)) {
return make_ready_future();
} else {
return do_req();
}
});
});
});
}
};
future<uint64_t> total_reqs() {
fmt::print("Requests on cpu {:2d}: {:d}\n", engine().cpu_id(), _total_reqs);
return make_ready_future<uint64_t>(_total_reqs);
}
bool done(uint64_t nr_done) {
if (_timer_based) {
return _timer_done;
} else {
return nr_done >= _reqs_per_conn;
}
}
future<> connect(ipv4_addr server_addr) {
// Establish all the TCP connections first
for (unsigned i = 0; i < _conn_per_core; i++) {
engine().net().connect(make_ipv4_address(server_addr)).then([this] (connected_socket fd) {
_sockets.push_back(std::move(fd));
http_debug("Established connection %6d on cpu %3d\n", _conn_connected.current(), engine().cpu_id());
_conn_connected.signal();
}).or_terminate();
}
return _conn_connected.wait(_conn_per_core);
}
future<> run() {
// All connected, start HTTP request
http_debug("Established all %6d tcp connections on cpu %3d\n", _conn_per_core, engine().cpu_id());
if (_timer_based) {
_run_timer.arm(std::chrono::seconds(_duration));
}
for (auto&& fd : _sockets) {
auto conn = new connection(std::move(fd), this);
conn->do_req().then_wrapped([this, conn] (auto&& f) {
http_debug("Finished connection %6d on cpu %3d\n", _conn_finished.current(), engine().cpu_id());
_total_reqs += conn->nr_done();
_conn_finished.signal();
delete conn;
try {
f.get();
} catch (std::exception& ex) {
fmt::print("http request error: {}\n", ex.what());
}
});
}
// All finished
return _conn_finished.wait(_conn_per_core);
}
future<> stop() {
return make_ready_future();
}
};
namespace bpo = boost::program_options;
int main(int ac, char** av) {
app_template app;
app.add_options()
("server,s", bpo::value<std::string>()->default_value("192.168.66.100:10000"), "Server address")
("conn,c", bpo::value<unsigned>()->default_value(100), "total connections")
("reqs,r", bpo::value<unsigned>()->default_value(0), "reqs per connection")
("duration,d", bpo::value<unsigned>()->default_value(10), "duration of the test in seconds)");
return app.run(ac, av, [&app] () -> future<int> {
auto& config = app.configuration();
auto server = config["server"].as<std::string>();
auto reqs_per_conn = config["reqs"].as<unsigned>();
auto total_conn= config["conn"].as<unsigned>();
auto duration = config["duration"].as<unsigned>();
if (total_conn % smp::count != 0) {
fmt::print("Error: conn needs to be n * cpu_nr\n");
return make_ready_future<int>(-1);
}
auto http_clients = new distributed<http_client>;
// Start http requests on all the cores
auto started = steady_clock_type::now();
fmt::print("========== http_client ============\n");
fmt::print("Server: {}\n", server);
fmt::print("Connections: {:d}\n", total_conn);
fmt::print("Requests/connection: {}\n", reqs_per_conn == 0 ? "dynamic (timer based)" : std::to_string(reqs_per_conn));
return http_clients->start(std::move(duration), std::move(total_conn), std::move(reqs_per_conn)).then([http_clients, server] {
return http_clients->invoke_on_all(&http_client::connect, ipv4_addr{server});
}).then([http_clients] {
return http_clients->invoke_on_all(&http_client::run);
}).then([http_clients] {
return http_clients->map_reduce(adder<uint64_t>(), &http_client::total_reqs);
}).then([http_clients, started] (auto total_reqs) {
// All the http requests are finished
auto finished = steady_clock_type::now();
auto elapsed = finished - started;
auto secs = static_cast<double>(elapsed.count() / 1000000000.0);
fmt::print("Total cpus: {:d}\n", smp::count);
fmt::print("Total requests: {:d}\n", total_reqs);
fmt::print("Total time: {:f}\n", secs);
fmt::print("Requests/sec: {:f}\n", static_cast<double>(total_reqs) / secs);
fmt::print("========== done ============\n");
return http_clients->stop().then([http_clients] {
// FIXME: If we call engine().exit(0) here to exit when
// requests are done. The tcp connection will not be closed
// properly, becasue we exit too earily and the FIN packets are
// not exchanged.
delete http_clients;
return make_ready_future<int>(0);
});
});
});
}
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