github.com/igggame/nebulas-go@v2.1.0+incompatible/storage/types.go (about)

     1  // Copyright (C) 2017 go-nebulas authors
     2  //
     3  // This file is part of the go-nebulas library.
     4  //
     5  // the go-nebulas library is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU General Public License as published by
     7  // the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // the go-nebulas library is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU General Public License
    16  // along with the go-nebulas library.  If not, see <http://www.gnu.org/licenses/>.
    17  //
    18  
    19  package storage
    20  
    21  import "errors"
    22  
    23  // const
    24  var (
    25  	ErrKeyNotFound = errors.New("not found")
    26  )
    27  
    28  // Storage interface of Storage.
    29  type Storage interface {
    30  	// Get return the value to the key in Storage.
    31  	Get(key []byte) ([]byte, error)
    32  
    33  	// Put put the key-value entry to Storage.
    34  	Put(key []byte, value []byte) error
    35  
    36  	// Del delete the key entry in Storage.
    37  	Del(key []byte) error
    38  
    39  	// EnableBatch enable batch write.
    40  	EnableBatch()
    41  
    42  	// DisableBatch disable batch write.
    43  	DisableBatch()
    44  
    45  	// Flush write and flush pending batch write.
    46  	Flush() error
    47  }