const (
	DefaultInterval = time.Minute
)

type Config interface {
	// Endpoint is a required starting endpoint for connect
	Endpoint() string

	// Database is a required database name.
	Database() string

	// Secure is an flag for secure connection
	Secure() bool

	// OperationTimeout is the maximum amount of time a YDB server will process
	// an operation. After timeout exceeds YDB will try to cancel operation and
	// regardless of the cancellation appropriate error will be returned to
	// the client.
	// If OperationTimeout is zero then no timeout is used.
	OperationTimeout() time.Duration

	// OperationCancelAfter is the maximum amount of time a YDB server will process an
	// operation. After timeout exceeds YDB will try to cancel operation and if
	// it succeeds appropriate error will be returned to the client; otherwise
	// processing will be continued.
	// If OperationCancelAfter is zero then no timeout is used.
	OperationCancelAfter() time.Duration

	// Trace defines trace over discovery client calls
	Trace() trace.Discovery

	// Interval is the frequency of background tasks of ydb endpoints discovery.
	// If Interval is zero then the DefaultInterval is used.
	// If Interval is negative, then no background discovery prepared.
	Interval() time.Duration
}

type Option func(c *config)