Function mainEntryClickHouseInstall

programs/install/Install.cpp:106–504

int mainEntryClickHouseInstall(int argc, char ** argv)
{
    po::options_description desc;
    desc.add_options()
        ("help,h", "produce help message")
        ("prefix", po::value<std::string>()->default_value(""), "prefix for all paths")
        ("binary-path", po::value<std::string>()->default_value("/usr/bin"), "where to install binaries")
        ("config-path", po::value<std::string>()->default_value("/etc/byconity-server"), "where to install configs")
        ("log-path", po::value<std::string>()->default_value("/var/log/byconity-server"), "where to create log directory")
        ("data-path", po::value<std::string>()->default_value("/var/lib/byconity-server"), "directory for data")
        ("disk-path", po::value<std::string>()->default_value("/var/lib/byconity-server/server_local_disk/data/0/"), "directory for local data parts")
        ("pid-path", po::value<std::string>()->default_value("/var/run/byconity-server"), "directory for pid file")
        ("user", po::value<std::string>()->default_value("clickhouse"), "clickhouse user to create")
        ("group", po::value<std::string>()->default_value("clickhouse"), "clickhouse group to create")
    ;

    po::variables_map options;
    po::store(po::parse_command_line(argc, argv, desc), options);

    if (options.count("help"))
    {
        std::cout << "Usage: "
            << (getuid() == 0 ? "" : "sudo ")
            << argv[0]
            << " install [options]\n";
        std::cout << desc << '\n';
    }

    try
    {
        /// We need to copy binary to the binary directory.
        /// The binary is currently run. We need to obtain its path from procfs (on Linux).

#if defined(OS_DARWIN)
        uint32_t path_length = 0;
        _NSGetExecutablePath(nullptr, &path_length);
        if (path_length <= 1)
            Exception(ErrorCodes::FILE_DOESNT_EXIST, "Cannot obtain path to the binary");

        std::string path(path_length, std::string::value_type());
        auto res = _NSGetExecutablePath(&path[0], &path_length);
        if (res != 0)
            Exception(ErrorCodes::FILE_DOESNT_EXIST, "Cannot obtain path to the binary");

        fs::path binary_self_path(path);
#else
        fs::path binary_self_path = "/proc/self/exe";
#endif

        if (!fs::exists(binary_self_path))
            throw Exception(ErrorCodes::FILE_DOESNT_EXIST, "Cannot obtain path to the binary from {}, file doesn't exist",
                            binary_self_path.string());

        fs::path binary_self_canonical_path = fs::canonical(binary_self_path);

        /// Copy binary to the destination directory.

        /// TODO An option to link instead of copy - useful for developers.