package db import . "github.com/tendermint/tmlibs/common" type DB interface { Get([]byte) []byte Set([]byte, []byte) SetSync([]byte, []byte) Delete([]byte) DeleteSync([]byte) Close() NewBatch() Batch // For debugging Print() Iterator() Iterator Stats() map[string]string } type Batch interface { Set(key, value []byte) Delete(key []byte) Write() } type Iterator interface { Next() bool Key() []byte Value() []byte } //----------------------------------------------------------------------------- const ( LevelDBBackendStr = "leveldb" // legacy, defaults to goleveldb. CLevelDBBackendStr = "cleveldb" GoLevelDBBackendStr = "goleveldb" MemDBBackendStr = "memdb" ) type dbCreator func(name string, dir string) (DB, error) var backends = map[string]dbCreator{} func registerDBCreator(backend string, creator dbCreator, force bool) { _, ok := backends[backend] if !force && ok { return } backends[backend] = creator } func NewDB(name string, backend string, dir string) DB { db, err := backends[backend](name, dir) if err != nil { PanicSanity(Fmt("Error initializing DB: %v", err)) } return db }