github.com/theQRL/go-zond@v0.2.1/core/rawdb/ancient_scheme.go (about)

     1  // Copyright 2022 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package rawdb
    18  
    19  import "path/filepath"
    20  
    21  // The list of table names of chain freezer.
    22  const (
    23  	// ChainFreezerHeaderTable indicates the name of the freezer header table.
    24  	ChainFreezerHeaderTable = "headers"
    25  
    26  	// ChainFreezerHashTable indicates the name of the freezer canonical hash table.
    27  	ChainFreezerHashTable = "hashes"
    28  
    29  	// ChainFreezerBodiesTable indicates the name of the freezer block body table.
    30  	ChainFreezerBodiesTable = "bodies"
    31  
    32  	// ChainFreezerReceiptTable indicates the name of the freezer receipts table.
    33  	ChainFreezerReceiptTable = "receipts"
    34  )
    35  
    36  // chainFreezerNoSnappy configures whether compression is disabled for the ancient-tables.
    37  // Hashes don't compress well.
    38  var chainFreezerNoSnappy = map[string]bool{
    39  	ChainFreezerHeaderTable:  false,
    40  	ChainFreezerHashTable:    true,
    41  	ChainFreezerBodiesTable:  false,
    42  	ChainFreezerReceiptTable: false,
    43  }
    44  
    45  const (
    46  	// stateHistoryTableSize defines the maximum size of freezer data files.
    47  	stateHistoryTableSize = 2 * 1000 * 1000 * 1000
    48  
    49  	// stateHistoryAccountIndex indicates the name of the freezer state history table.
    50  	stateHistoryMeta         = "history.meta"
    51  	stateHistoryAccountIndex = "account.index"
    52  	stateHistoryStorageIndex = "storage.index"
    53  	stateHistoryAccountData  = "account.data"
    54  	stateHistoryStorageData  = "storage.data"
    55  )
    56  
    57  var stateFreezerNoSnappy = map[string]bool{
    58  	stateHistoryMeta:         true,
    59  	stateHistoryAccountIndex: false,
    60  	stateHistoryStorageIndex: false,
    61  	stateHistoryAccountData:  false,
    62  	stateHistoryStorageData:  false,
    63  }
    64  
    65  // The list of identifiers of ancient stores.
    66  var (
    67  	chainFreezerName = "chain" // the folder name of chain segment ancient store.
    68  	stateFreezerName = "state" // the folder name of reverse diff ancient store.
    69  )
    70  
    71  // freezers the collections of all builtin freezers.
    72  var freezers = []string{chainFreezerName, stateFreezerName}
    73  
    74  // NewStateFreezer initializes the freezer for state history.
    75  func NewStateFreezer(ancientDir string, readOnly bool) (*ResettableFreezer, error) {
    76  	return NewResettableFreezer(filepath.Join(ancientDir, stateFreezerName), "eth/db/state", readOnly, stateHistoryTableSize, stateFreezerNoSnappy)
    77  }