github.com/klaytn/klaytn@v1.12.1/storage/database/filedb.go (about)

     1  // Copyright 2020 The klaytn Authors
     2  // This file is part of the klaytn library.
     3  //
     4  // The klaytn library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The klaytn library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the klaytn library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package database
    18  
    19  type item struct {
    20  	key []byte
    21  	val []byte
    22  }
    23  
    24  // fileDB inserts an item, which has key and value in byte slice.
    25  // It inserts the item to somewhere and returns the location of the item.
    26  // An item can be retrieved with the returned location, URI.
    27  type fileDB interface {
    28  	write(items item) (string, error)
    29  	read(key []byte) ([]byte, error)
    30  	delete(key []byte) error
    31  	deleteBucket()
    32  }