type ConnString struct {
	Original                string
	AppName                 string
	AuthMechanism           string
	AuthMechanismProperties map[string]string
	AuthSource              string
	Connect                 ConnectMode
	ConnectTimeout          time.Duration
	Database                string
	HeartbeatInterval       time.Duration
	Hosts                   []string
	J                       bool
	JSet                    bool
	LocalThreshold          time.Duration
	MaxConnIdleTime         time.Duration
	MaxConnLifeTime         time.Duration
	MaxConnsPerHost         uint16
	MaxConnsPerHostSet      bool
	MaxIdleConnsPerHost     uint16
	MaxIdleConnsPerHostSet  bool
	Password                string
	PasswordSet             bool
	ReadConcernLevel        string
	ReadPreference          string
	ReadPreferenceTagSets   []map[string]string
	ReplicaSet              string
	ServerSelectionTimeout  time.Duration
	SocketTimeout           time.Duration
	SSL                     bool
	SSLInsecure             bool
	SSLCaFile               string
	SSLCaFileSet            bool
	WString                 string
	WNumber                 int
	WNumberSet              bool
	Username                string

	WTimeout    time.Duration
	WTimeoutSet bool

	Options        map[string][]string
	UnknownOptions map[string][]string
}

type ConnectMode uint8

const (
	AutoConnect ConnectMode = iota
	SingleConnect
)