kvdb

type DbProducer interface {
	// Names of existing databases.
	Names() []string
	// OpenDb or create db with name.
	OpenDb(name string) KeyValueStore
}

type Droper interface {
	Drop()
}

type FlushableKeyValueStore interface {
	KeyValueStore

	NotFlushedPairs() int
	NotFlushedSizeEst() int
	Flush() error
	DropNotFlushed()
}

type KeyValueStore interface {
	ethdb.KeyValueStore
	Droper
}