github.com/fibonacci-chain/fbc@v0.0.0-20231124064014-c7636198c1e9/libs/cosmos-sdk/store/mpt/instance.go (about)

     1  package mpt
     2  
     3  import (
     4  	"encoding/binary"
     5  	"path/filepath"
     6  	"sync"
     7  
     8  	ethcmn "github.com/ethereum/go-ethereum/common"
     9  	"github.com/ethereum/go-ethereum/core/rawdb"
    10  	ethstate "github.com/ethereum/go-ethereum/core/state"
    11  	"github.com/ethereum/go-ethereum/trie"
    12  	"github.com/fibonacci-chain/fbc/libs/cosmos-sdk/client/flags"
    13  	"github.com/fibonacci-chain/fbc/libs/cosmos-sdk/store/mpt/types"
    14  	sdk "github.com/fibonacci-chain/fbc/libs/cosmos-sdk/types"
    15  	"github.com/spf13/viper"
    16  )
    17  
    18  const (
    19  	mptDataDir = "data"
    20  	mptSpace   = "mpt"
    21  )
    22  
    23  var (
    24  	gMptDatabase ethstate.Database = nil
    25  	initMptOnce  sync.Once
    26  )
    27  
    28  func InstanceOfMptStore() ethstate.Database {
    29  	initMptOnce.Do(func() {
    30  		homeDir := viper.GetString(flags.FlagHome)
    31  		path := filepath.Join(homeDir, mptDataDir)
    32  
    33  		backend := viper.GetString(sdk.FlagDBBackend)
    34  		if backend == "" {
    35  			backend = string(types.GoLevelDBBackend)
    36  		}
    37  
    38  		kvstore, e := types.CreateKvDB(mptSpace, types.BackendType(backend), path)
    39  		if e != nil {
    40  			panic("fail to open database: " + e.Error())
    41  		}
    42  		db := rawdb.NewDatabase(kvstore)
    43  		gMptDatabase = ethstate.NewDatabaseWithConfig(db, &trie.Config{
    44  			Cache:     int(TrieCacheSize),
    45  			Journal:   "",
    46  			Preimages: true,
    47  		})
    48  	})
    49  
    50  	return gMptDatabase
    51  }
    52  
    53  // GetLatestStoredBlockHeight get latest mpt storage height
    54  func (ms *MptStore) GetLatestStoredBlockHeight() uint64 {
    55  	rst, err := ms.db.TrieDB().DiskDB().Get(KeyPrefixAccLatestStoredHeight)
    56  	if err != nil || len(rst) == 0 {
    57  		return 0
    58  	}
    59  	return binary.BigEndian.Uint64(rst)
    60  }
    61  
    62  // SetLatestStoredBlockHeight sets the latest stored storage height
    63  func (ms *MptStore) SetLatestStoredBlockHeight(height uint64) {
    64  	hhash := sdk.Uint64ToBigEndian(height)
    65  	ms.db.TrieDB().DiskDB().Put(KeyPrefixAccLatestStoredHeight, hhash)
    66  }
    67  
    68  // GetMptRootHash gets root mpt hash from block height
    69  func (ms *MptStore) GetMptRootHash(height uint64) ethcmn.Hash {
    70  	hhash := sdk.Uint64ToBigEndian(height)
    71  	rst, err := ms.db.TrieDB().DiskDB().Get(append(KeyPrefixAccRootMptHash, hhash...))
    72  	if err != nil || len(rst) == 0 {
    73  		return ethcmn.Hash{}
    74  	}
    75  
    76  	return ethcmn.BytesToHash(rst)
    77  }
    78  
    79  // SetMptRootHash sets the mapping from block height to root mpt hash
    80  func (ms *MptStore) SetMptRootHash(height uint64, hash ethcmn.Hash) {
    81  	hhash := sdk.Uint64ToBigEndian(height)
    82  	ms.db.TrieDB().DiskDB().Put(append(KeyPrefixAccRootMptHash, hhash...), hash.Bytes())
    83  }
    84  
    85  func (ms *MptStore) HasVersion(height int64) bool {
    86  	return ms.GetMptRootHash(uint64(height)) != ethcmn.Hash{}
    87  }