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https://github.com/XRPLF/rippled.git
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319 lines
10 KiB
C++
319 lines
10 KiB
C++
/*
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* Copyright (c) 2011, Peter Thorson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the WebSocket++ Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef WSPERF_CASE_HPP
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#define WSPERF_CASE_HPP
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#include "wscmd.hpp"
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#include "../../src/roles/client.hpp"
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#include "../../src/websocketpp.hpp"
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#include <boost/chrono.hpp>
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#include <exception>
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using websocketpp::client;
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namespace wsperf {
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class case_exception : public std::exception {
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public:
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case_exception(const std::string& msg) : m_msg(msg) {}
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~case_exception() throw() {}
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virtual const char* what() const throw() {
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return m_msg.c_str();
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}
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std::string m_msg;
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};
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class case_handler : public client::handler {
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public:
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typedef case_handler type;
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void start(connection_ptr con, uint64_t timeout) {
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m_timer.reset(new boost::asio::deadline_timer(
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con->get_io_service(),
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boost::posix_time::seconds(0))
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);
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m_timer->expires_from_now(boost::posix_time::milliseconds(timeout));
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m_timer->async_wait(
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boost::bind(
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&type::on_timer,
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this,
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con,
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boost::asio::placeholders::error
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)
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);
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m_start = boost::chrono::steady_clock::now();
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m_bytes = 0;
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m_pass = RUNNING;
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}
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void mark() {
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m_end.push_back(boost::chrono::steady_clock::now());
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}
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void end(connection_ptr con) {
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/*uint64_t avg = 0;
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std::vector<uint64_t> avgs(10);
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double squaresum = 0;
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uint64_t stddev = 0;
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int64_t total = 0;
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double seconds = 0;*/
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std::vector<double> avgs;
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avgs.resize(m_quantile_count, 0);
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std::vector<double> quantiles;
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quantiles.resize(m_quantile_count, 0);
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double avg = 0;
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double stddev = 0;
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double total = 0;
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double seconds = 0;
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// TODO: handle weird sizes and error conditions better
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if (m_end.size() > m_quantile_count) {
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boost::chrono::steady_clock::time_point last = m_start;
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// convert RTTs to microsecs
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//
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std::vector<boost::chrono::steady_clock::time_point>::iterator it;
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for (it = m_end.begin(); it != m_end.end(); ++it) {
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boost::chrono::nanoseconds dur = *it - last;
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m_times.push_back(static_cast<double> (dur.count()) / 1000.);
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last = *it;
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}
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std::sort(m_times.begin(), m_times.end());
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size_t samples_per_quantile = m_times.size() / m_quantile_count;
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// quantiles
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for (size_t i = 0; i < m_quantile_count; ++i) {
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quantiles[i] = m_times[((i + 1) * samples_per_quantile) - 1];
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}
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// total average and quantile averages
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for (size_t i = 0; i < m_times.size(); ++i) {
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avg += m_times[i];
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avgs[i / samples_per_quantile]
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+= m_times[i] / static_cast<double>(samples_per_quantile);
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}
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avg /= static_cast<double> (m_times.size());
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// standard dev corrected for estimation from sample
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for (size_t i = 0; i < m_times.size(); ++i) {
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stddev += (m_times[i] - avg) * (m_times[i] - avg);
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}
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// Bessel's correction
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stddev /= static_cast<double> (m_times.size() - 1);
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stddev = std::sqrt(stddev);
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} else {
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m_times.push_back(0);
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}
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boost::chrono::nanoseconds total_dur = m_end[m_end.size()-1] - m_start;
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total = static_cast<double> (total_dur.count()) / 1000.; // microsec
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seconds = total / 10000000.;
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std::stringstream s;
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std::string outcome;
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switch (m_pass) {
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case FAIL:
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outcome = "fail";
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break;
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case PASS:
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outcome = "pass";
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break;
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case TIME_OUT:
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outcome = "time_out";
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break;
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case RUNNING:
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throw case_exception("end() called from RUNNING state");
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break;
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}
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s << "{\"result\":\"" << outcome
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<< "\",\"min\":" << m_times[0]
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<< ",\"max\":" << m_times[m_times.size()-1]
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<< ",\"median\":" << m_times[(m_times.size()-1)/2]
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<< ",\"avg\":" << avg
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<< ",\"stddev\":" << stddev
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<< ",\"total\":" << total
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<< ",\"bytes\":" << m_bytes
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<< ",\"quantiles\":[";
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for (size_t i = 0; i < m_quantile_count; i++) {
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s << (i > 0 ? "," : "");
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s << "[";
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s << avgs[i] << "," << quantiles[i];
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s << "]";
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}
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s << "]";
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if (m_rtts) {
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s << ",\"rtts\":[";
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for (size_t i = 0; i < m_times.size(); i++) {
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s << (i > 0 ? "," : "") << m_times[i];
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}
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s << "]";
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};
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s << "}";
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m_data = s.str();
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con->close(websocketpp::close::status::NORMAL,"");
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}
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// Just does random ascii right now. True random UTF8 with multi-byte stuff
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// would probably be better
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void fill_utf8(std::string& data,size_t size,bool random = true) {
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if (random) {
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uint32_t val;
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for (size_t i = 0; i < size; i++) {
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if (i%4 == 0) {
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val = uint32_t(rand());
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}
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data.push_back(char(((reinterpret_cast<uint8_t*>(&val)[i%4])%95)+32));
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}
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} else {
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data.assign(size,'*');
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}
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}
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void fill_binary(std::string& data,size_t size,bool random = true) {
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if (random) {
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int32_t val;
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for (size_t i = 0; i < size; i++) {
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if (i%4 == 0) {
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val = rand();
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}
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data.push_back((reinterpret_cast<char*>(&val))[i%4]);
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}
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} else {
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data.assign(size,'*');
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}
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}
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std::string extract_string(wscmd::cmd command,std::string key) {
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if (command.args[key] != "") {
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return command.args[key];
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} else {
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throw case_exception("Invalid " + key + " parameter.");
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}
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}
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template <typename T>
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T extract_number(wscmd::cmd command,std::string key) {
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if (command.args[key] != "") {
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std::istringstream buf(command.args[key]);
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T val;
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buf >> val;
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if (buf) {return val;}
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}
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throw case_exception("Invalid " + key + " parameter.");
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}
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bool extract_bool(wscmd::cmd command,std::string key) {
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if (command.args[key] != "") {
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if (command.args[key] == "true") {
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return true;
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} else if (command.args[key] == "false") {
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return false;
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}
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}
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throw case_exception("Invalid " + key + " parameter.");
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}
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void on_timer(connection_ptr con,const boost::system::error_code& error) {
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if (error == boost::system::errc::operation_canceled) {
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return; // timer was canceled because test finished
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}
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// time out
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mark();
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m_pass = TIME_OUT;
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this->end(con);
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}
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void on_close(connection_ptr con) {}
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void on_fail(connection_ptr con) {
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m_data = "{\"result\":\"connection_failed\"}";
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}
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const std::string& get_data() const {
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return m_data;
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}
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const std::string& get_token() const {
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return m_token;
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}
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const std::string& get_uri() const {
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return m_uri;
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}
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protected:
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enum status {
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FAIL = 0,
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PASS = 1,
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TIME_OUT = 2,
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RUNNING = 3
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};
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std::string m_name;
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std::string m_uri;
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std::string m_token;
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size_t m_quantile_count;
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bool m_rtts;
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std::string m_data;
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status m_pass;
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boost::shared_ptr<boost::asio::deadline_timer> m_timer;
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boost::chrono::steady_clock::time_point m_start;
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std::vector<boost::chrono::steady_clock::time_point> m_end;
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std::vector<double> m_times;
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uint64_t m_bytes;
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};
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typedef boost::shared_ptr<case_handler> case_handler_ptr;
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} // namespace wsperf
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#endif // WSPERF_CASE_HPP
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