Method processOptions

programs/client/Client.cpp:862–1050

void Client::processOptions(
    const OptionsDescription & options_description,
    const CommandLineOptions & options,
    const std::vector<Arguments> & external_tables_arguments,
    const std::vector<Arguments> & hosts_and_ports_arguments)
{
    namespace po = boost::program_options;

    size_t number_of_external_tables_with_stdin_source = 0;
    for (size_t i = 0; i < external_tables_arguments.size(); ++i)
    {
        /// Parse commandline options related to external tables.
        po::parsed_options parsed_tables
            = po::command_line_parser(external_tables_arguments[i]).options(options_description.external_description.value()).run();
        po::variables_map external_options;
        po::store(parsed_tables, external_options);

        try
        {
            external_tables.emplace_back(external_options);
            if (external_tables.back().file == "-")
                ++number_of_external_tables_with_stdin_source;
            if (number_of_external_tables_with_stdin_source > 1)
                throw Exception(ErrorCodes::BAD_ARGUMENTS, "Two or more external tables has stdin (-) set as --file field");
        }
        catch (Exception & e)
        {
            std::cerr << getExceptionMessageForLogging(e, false) << std::endl;
            std::cerr << "Table №" << i << std::endl << std::endl;
            /// Avoid the case when error exit code can possibly overflow to normal (zero).
            auto exit_code = e.code() % 256;
            if (exit_code == 0)
                exit_code = 255;
            _exit(exit_code);
        }
    }

    for (const auto & hosts_and_ports_argument : hosts_and_ports_arguments)
    {
        /// Parse commandline options related to external tables.
        po::parsed_options parsed_hosts_and_ports
            = po::command_line_parser(hosts_and_ports_argument).options(options_description.hosts_and_ports_description.value()).run();
        po::variables_map host_and_port_options;
        po::store(parsed_hosts_and_ports, host_and_port_options);
        std::string host = host_and_port_options["host"].as<std::string>();
        std::optional<UInt16> port
            = !host_and_port_options["port"].empty() ? std::make_optional(host_and_port_options["port"].as<UInt16>()) : std::nullopt;
        hosts_and_ports.emplace_back(HostAndPort{host, port});
    }

    send_external_tables = true;

    shared_context = Context::createShared();
    global_context = Context::createGlobal(shared_context.get());
    global_context->makeGlobalContext();
    global_context->setApplicationType(Context::ApplicationType::CLIENT);
    global_context->setSettings(*cmd_settings);