Function mainEntryClickHouseBenchmark

programs/benchmark/Benchmark.cpp:634–730

#pragma GCC diagnostic ignored "-Wmissing-declarations"

int mainEntryClickHouseBenchmark(int argc, char ** argv)
{
    using namespace DB;
    bool print_stacktrace = true;

    try
    {
        using boost::program_options::value;

        boost::program_options::options_description desc = createOptionsDescription("Allowed options", getTerminalWidth());
        desc.add_options()
            ("help",                                                            "produce help message")
            ("query",      value<std::string>()->default_value(""),             "query to execute")
            ("concurrency,c", value<unsigned>()->default_value(1),              "number of parallel queries")
            ("delay,d",       value<double>()->default_value(1),                "delay between intermediate reports in seconds (set 0 to disable reports)")
            ("stage",         value<std::string>()->default_value("complete"),  "request query processing up to specified stage: complete,fetch_columns,with_mergeable_state,with_mergeable_state_after_aggregation,with_mergeable_state_after_aggregation_and_limit")
            ("iterations,i",  value<size_t>()->default_value(0),                "amount of queries to be executed")
            ("timelimit,t",   value<double>()->default_value(0.),               "stop launch of queries after specified time limit")
            ("randomize,r",   value<bool>()->default_value(false),              "randomize order of execution")
            ("json",          value<std::string>()->default_value(""),          "write final report to specified file in JSON format")
            ("host,h",        value<Strings>()->multitoken(),                   "")
            ("port,p",        value<Ports>()->multitoken(),                     "")
            ("cumulative",                                                      "prints cumulative data instead of data per interval")
            ("secure,s",                                                        "Use TLS connection")
            ("user",          value<std::string>()->default_value("default"),   "")
            ("password",      value<std::string>()->default_value(""),          "")
            ("database",      value<std::string>()->default_value("default"),   "")
            ("stacktrace",                                                      "print stack traces of exceptions")
            ("confidence",    value<size_t>()->default_value(5),                "set the level of confidence for T-test [0=80%, 1=90%, 2=95%, 3=98%, 4=99%, 5=99.5%(default)")
            ("query_id",      value<std::string>()->default_value(""),          "")
            ("detail",                                                          "output detail info for all hosts")
            ("continue_on_errors", "continue testing even if a query fails")
            ("reconnect", "establish new connection for every query")
        ;

        Settings settings;
        settings.addProgramOptions(desc);

        boost::program_options::variables_map options;
        boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), options);
        boost::program_options::notify(options);

        clearPasswordFromCommandLine(argc, argv);

        if (options.count("help"))
        {
            std::cout << "Usage: " << argv[0] << " [options] < queries.txt\n";
            std::cout << desc << "\n";
            return 1;
        }

        print_stacktrace = options.count("stacktrace");

        /// NOTE Maybe clickhouse-benchmark should also respect .xml configuration of clickhouse-client.

        UInt16 default_port = options.count("secure") ? DBMS_DEFAULT_SECURE_PORT : DBMS_DEFAULT_PORT;

        UseSSL use_ssl;