kvapi

type APIError struct {
	Method string

	Err error
}

type AuthError struct {
	Msg string
}

type Client interface {
	// Get the value of key.
	Get(req *GetRequest) (*GetResponse, error)

	// Set key to hold given value.
	Set(rsp *SetRequest) (*SetResponse, error)
}

type ConflictError struct {
	ProvidedVersion, ExpectedVersion uuid.UUID
}

type GetRequest struct {
	Key string
}

type GetResponse struct {
	Value   string
	Version uuid.UUID
}

type SetRequest struct {
	Key, Value string

	// OldVersion field is checked before updating value.
	//
	// When updating old value, OldVersion must specify uuid of currently stored value.
	// When creating new value, OldVersion must hold zero value of UUID.
	OldVersion, NewVersion uuid.UUID
}

type SetResponse struct{}