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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
#include <algorithm>
#include <chrono>
#include <cstddef>
#include <iostream>
#include <iterator>
#include <numeric>
#include <ranges>
#include <stdexcept>
#include <string>
#include <string_view>
import GraphQL.Client;
import GraphQL.Service;
import GraphQL.Today.Mock;
import GraphQL.Today.TodayClient;
using namespace graphql;
using namespace std::literals;
void outputOverview(
std::size_t iterations, const std::chrono::steady_clock::duration& totalDuration) noexcept
{
const auto requestsPerSecond =
((static_cast<double>(iterations)
* static_cast<double>(
std::chrono::duration_cast<std::chrono::steady_clock::duration>(1s).count()))
/ static_cast<double>(totalDuration.count()));
const auto averageRequest =
(static_cast<double>(
std::chrono::duration_cast<std::chrono::microseconds>(totalDuration).count())
/ static_cast<double>(iterations));
std::cout << "Throughput: " << requestsPerSecond << " requests/second" << std::endl;
std::cout << "Overall (microseconds): "
<< std::chrono::duration_cast<std::chrono::microseconds>(totalDuration).count()
<< " total, " << averageRequest << " average" << std::endl;
}
void outputSegment(
std::string_view name, std::vector<std::chrono::steady_clock::duration>& durations) noexcept
{
std::ranges::sort(durations);
const auto count = durations.size();
const auto total =
std::accumulate(durations.begin(), durations.end(), std::chrono::steady_clock::duration {});
std::cout << name << " (microseconds): "
<< std::chrono::duration_cast<std::chrono::microseconds>(durations[count / 2]).count()
<< " median, "
<< std::chrono::duration_cast<std::chrono::microseconds>(durations.front()).count()
<< " minimum, "
<< std::chrono::duration_cast<std::chrono::microseconds>(durations.back()).count()
<< " maximum, "
<< (static_cast<double>(
std::chrono::duration_cast<std::chrono::microseconds>(total).count())
/ static_cast<double>(count))
<< " average" << std::endl;
}
int main(int argc, char** argv)
{
const std::size_t iterations = [](const char* arg) noexcept -> std::size_t {
if (arg)
{
const int parsed = std::atoi(arg);
if (parsed > 0)
{
return static_cast<std::size_t>(parsed);
}
}
// Default to 100 iterations
return 100;
}((argc > 1) ? argv[1] : nullptr);
std::cout << "Iterations: " << iterations << std::endl;
const auto mockService = today::mock_service();
const auto& service = mockService->service;
std::vector<std::chrono::steady_clock::duration> durationResolve(iterations);
std::vector<std::chrono::steady_clock::duration> durationParseResponse(iterations);
const auto startTime = std::chrono::steady_clock::now();
try
{
using namespace today::client::query::Query;
auto query = GetRequestObject();
const auto& name = GetOperationName();
auto visitor = std::make_shared<ResponseVisitor>();
auto responseVisitor = std::make_shared<response::ValueVisitor>(visitor);
for (std::size_t i = 0; i < iterations; ++i)
{
const auto startResolve = std::chrono::steady_clock::now();
auto response = service->visit({ query, name }).get();
const auto startParseResponse = std::chrono::steady_clock::now();
std::move(response.data).visit(responseVisitor);
const auto parsed = visitor->response();
const auto endParseResponse = std::chrono::steady_clock::now();
durationResolve[i] = startParseResponse - startResolve;
durationParseResponse[i] = endParseResponse - startParseResponse;
}
}
catch (const std::runtime_error& ex)
{
std::cerr << ex.what() << std::endl;
return 1;
}
const auto endTime = std::chrono::steady_clock::now();
const auto totalDuration = endTime - startTime;
outputOverview(iterations, totalDuration);
outputSegment("Resolve"sv, durationResolve);
outputSegment("ParseResponse"sv, durationParseResponse);
return 0;
}