tendermint/db/level_db.go

package db

import (
    "fmt"
    "github.com/syndtr/goleveldb/leveldb"
    "path"
)

type LevelDB struct {
    db *leveldb.DB
}

func NewLevelDB(name string) (*LevelDB, error) {
    dbPath := path.Join(name)
    db, err := leveldb.OpenFile(dbPath, nil)
    if err != nil {
        return nil, err
    }
    database := &LevelDB{db: db}
    return database, nil
}

func (db *LevelDB) Put(key []byte, value []byte) {
    err := db.db.Put(key, value, nil)
    if err != nil { panic(err) }
}

func (db *LevelDB) Get(key []byte) ([]byte) {
    res, err := db.db.Get(key, nil)
    if err != nil { panic(err) }
    return res
}

func (db *LevelDB) Delete(key []byte) {
    err := db.db.Delete(key, nil)
    if err != nil { panic(err) }
}

func (db *LevelDB) Db() *leveldb.DB {
    return db.db
}

func (db *LevelDB) Close() {
    db.db.Close()
}

func (db *LevelDB) Print() {
    iter := db.db.NewIterator(nil, nil)
    for iter.Next() {
        key := iter.Key()
        value := iter.Value()
        fmt.Printf("[%x]:\t[%x]", key, value)
    }
}