database

type DB interface {
	// Open opens the database available with the given options.
	Open(dataSourceName string, opt ...Option) error
	// Close closes the current database.
	Close() error
	// Get returns the value stored in the given table/bucket and key.
	Get(bucket, key []byte) (ret []byte, err error)
	// Set sets the given value in the given table/bucket and key.
	Set(bucket, key, value []byte) error
	// CmpAndSwap swaps the value at the given bucket and key if the current
	// value is equivalent to the oldValue input. Returns 'true' if the
	// swap was successful and 'false' otherwise.
	CmpAndSwap(bucket, key, oldValue, newValue []byte) ([]byte, bool, error)
	// Del deletes the data in the given table/bucket and key.
	Del(bucket, key []byte) error
	// List returns a list of all the entries in a given table/bucket.
	List(bucket []byte) ([]*Entry, error)
	// Update performs a transaction with multiple read-write commands.
	Update(tx *Tx) error
	// CreateTable creates a table or a bucket in the database.
	CreateTable(bucket []byte) error
	// DeleteTable deletes a table or a bucket in the database.
	DeleteTable(bucket []byte) error
}

type Entry struct {
	Bucket []byte
	Key    []byte
	Value  []byte
}

type NotSupportedDB struct{}

type Option func(o *Options) error

type Options struct {
	Database              string
	ValueDir              string
	BadgerFileLoadingMode string
}

type Tx struct {
	Operations []*TxEntry
}

type TxCmd int

type TxEntry struct {
	Bucket   []byte
	Key      []byte
	Value    []byte
	CmpValue []byte
	// Where the result of Get or CmpAndSwap txns is stored.
	Result  []byte
	Cmd     TxCmd
	Swapped bool
}