refactor state_database.go to better match original
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f487162c07
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@ -30,27 +30,27 @@ var (
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errNotFound = errors.New("not found")
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)
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// StateDatabase interface is a union of the subset of the geth state.Database interface required
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// Database interface is a union of the subset of the geth state.Database interface required
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// to support the vm.StateDB implementation as well as methods specific to this Postgres based implementation
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type StateDatabase interface {
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type Database interface {
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ContractCode(codeHash common.Hash) ([]byte, error)
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ContractCodeSize(codeHash common.Hash) (int, error)
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StateAccount(addressHash, blockHash common.Hash) (*types.StateAccount, error)
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StorageValue(addressHash, slotHash, blockHash common.Hash) ([]byte, error)
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}
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var _ StateDatabase = &stateDatabase{}
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var _ Database = &cachingDB{}
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type stateDatabase struct {
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type cachingDB struct {
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db sql.Database
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codeSizeCache *lru.Cache
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codeCache *fastcache.Cache
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}
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// NewStateDatabase returns a new Database implementation using the passed parameters
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func NewStateDatabase(db sql.Database) *stateDatabase {
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// NewDatabase returns a new Database implementation using the passed parameters
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func NewDatabase(db sql.Database) *cachingDB {
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csc, _ := lru.New(codeSizeCacheSize)
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return &stateDatabase{
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return &cachingDB{
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db: db,
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codeSizeCache: csc,
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codeCache: fastcache.New(codeCacheSize),
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@ -58,7 +58,7 @@ func NewStateDatabase(db sql.Database) *stateDatabase {
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}
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// ContractCode satisfies Database, it returns the contract code for a given codehash
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func (sd *stateDatabase) ContractCode(codeHash common.Hash) ([]byte, error) {
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func (sd *cachingDB) ContractCode(codeHash common.Hash) ([]byte, error) {
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if code := sd.codeCache.Get(nil, codeHash.Bytes()); len(code) > 0 {
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return code, nil
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}
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@ -79,7 +79,7 @@ func (sd *stateDatabase) ContractCode(codeHash common.Hash) ([]byte, error) {
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}
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// ContractCodeSize satisfies Database, it returns the length of the code for a provided codehash
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func (sd *stateDatabase) ContractCodeSize(codeHash common.Hash) (int, error) {
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func (sd *cachingDB) ContractCodeSize(codeHash common.Hash) (int, error) {
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if cached, ok := sd.codeSizeCache.Get(codeHash); ok {
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return cached.(int), nil
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}
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@ -88,7 +88,7 @@ func (sd *stateDatabase) ContractCodeSize(codeHash common.Hash) (int, error) {
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}
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// StateAccount satisfies Database, it returns the types.StateAccount for a provided address and block hash
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func (sd *stateDatabase) StateAccount(addressHash, blockHash common.Hash) (*types.StateAccount, error) {
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func (sd *cachingDB) StateAccount(addressHash, blockHash common.Hash) (*types.StateAccount, error) {
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res := StateAccountResult{}
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err := sd.db.QueryRow(context.Background(), GetStateAccount, addressHash.Hex(), blockHash.Hex()).
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Scan(&res.Balance, &res.Nonce, &res.CodeHash, &res.StorageRoot, &res.Removed)
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@ -111,7 +111,7 @@ func (sd *stateDatabase) StateAccount(addressHash, blockHash common.Hash) (*type
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// StorageValue satisfies Database, it returns the RLP-encoded storage value for the provided address, slot,
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// and block hash
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func (sd *stateDatabase) StorageValue(addressHash, slotHash, blockHash common.Hash) ([]byte, error) {
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func (sd *cachingDB) StorageValue(addressHash, slotHash, blockHash common.Hash) ([]byte, error) {
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res := StorageSlotResult{}
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err := sd.db.QueryRow(context.Background(), GetStorageSlot,
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addressHash.Hex(), slotHash.Hex(), blockHash.Hex()).
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