folly::fbstring Operation::connectStageString()

in squangle/mysql_client/Operation.cpp [1902:1934]

• 32 lines of code
• 2 McCabe index (conditional complexity)

folly::fbstring Operation::connectStageString(connect_stage stage) {
  static const folly::F14FastMap<connect_stage, folly::fbstring>
      stageToStringMap =
  { {connect_stage::CONNECT_STAGE_INVALID, "CONNECT_STAGE_INVALID"},
    {connect_stage::CONNECT_STAGE_NOT_STARTED, "CONNECT_STAGE_NOT_STARTED"},
    {connect_stage::CONNECT_STAGE_NET_BEGIN_CONNECT,
     "CONNECT_STAGE_NET_BEGIN_CONNECT"},
#if MYSQL_VERSION_ID >= 80020 // csm_wait_connect added in 8.0.20
    {connect_stage::CONNECT_STAGE_NET_WAIT_CONNECT,
     "CONNECT_STAGE_NET_WAIT_CONNECT"},
#endif
    {connect_stage::CONNECT_STAGE_NET_COMPLETE_CONNECT,
     "CONNECT_STAGE_NET_COMPLETE_CONNECT"},
    {connect_stage::CONNECT_STAGE_READ_GREETING, "CONNECT_STAGE_READ_GREETING"},
    {connect_stage::CONNECT_STAGE_PARSE_HANDSHAKE,
     "CONNECT_STAGE_PARSE_HANDSHAKE"},
    {connect_stage::CONNECT_STAGE_ESTABLISH_SSL, "CONNECT_STAGE_ESTABLISH_SSL"},
    {connect_stage::CONNECT_STAGE_AUTHENTICATE, "CONNECT_STAGE_AUTHENTICATE"},
    {connect_stage::CONNECT_STAGE_PREP_SELECT_DATABASE,
     "CONNECT_STAGE_PREP_SELECT_DATABASE"},
    {connect_stage::CONNECT_STAGE_PREP_INIT_COMMANDS,
     "CONNECT_STAGE_PREP_INIT_COMMANDS"},
    {connect_stage::CONNECT_STAGE_SEND_ONE_INIT_COMMAND,
     "CONNECT_STAGE_SEND_ONE_INIT_COMMAND"},
    {connect_stage::CONNECT_STAGE_COMPLETE, "CONNECT_STAGE_COMPLETE"},
  };

  try {
    return stageToStringMap.at(stage);
  } catch (const std::out_of_range& /* ex */) {
    return folly::sformat("Unexpected connect_stage: {}", (int)stage);
  }
}