forked from cerc-io/plugeth
100 lines
4.0 KiB
Go
100 lines
4.0 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rawdb
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import (
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"encoding/binary"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/log"
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)
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// ReadSnapshotBlock retrieves the number and root of the block whose state is
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// contained in the persisted snapshot.
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func ReadSnapshotBlock(db ethdb.KeyValueReader) (uint64, common.Hash) {
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data, _ := db.Get(snapshotBlockKey)
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if len(data) != 8+common.HashLength {
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return 0, common.Hash{}
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}
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return binary.BigEndian.Uint64(data[:8]), common.BytesToHash(data[8:])
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}
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// WriteSnapshotBlock stores the number and root of the block whose state is
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// contained in the persisted snapshot.
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func WriteSnapshotBlock(db ethdb.KeyValueWriter, number uint64, root common.Hash) {
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if err := db.Put(snapshotBlockKey, append(encodeBlockNumber(number), root.Bytes()...)); err != nil {
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log.Crit("Failed to store snapsnot block's number and root", "err", err)
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}
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}
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// DeleteSnapshotBlock deletes the number and hash of the block whose state is
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// contained in the persisted snapshot. Since snapshots are not immutable, this
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// method can be used during updates, so a crash or failure will mark the entire
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// snapshot invalid.
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func DeleteSnapshotBlock(db ethdb.KeyValueWriter) {
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if err := db.Delete(snapshotBlockKey); err != nil {
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log.Crit("Failed to remove snapsnot block's number and hash", "err", err)
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}
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}
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// ReadAccountSnapshot retrieves the snapshot entry of an account trie leaf.
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func ReadAccountSnapshot(db ethdb.KeyValueReader, hash common.Hash) []byte {
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data, _ := db.Get(accountSnapshotKey(hash))
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return data
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}
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// WriteAccountSnapshot stores the snapshot entry of an account trie leaf.
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func WriteAccountSnapshot(db ethdb.KeyValueWriter, hash common.Hash, entry []byte) {
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if err := db.Put(accountSnapshotKey(hash), entry); err != nil {
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log.Crit("Failed to store account snapshot", "err", err)
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}
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}
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// DeleteAccountSnapshot removes the snapshot entry of an account trie leaf.
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func DeleteAccountSnapshot(db ethdb.KeyValueWriter, hash common.Hash) {
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if err := db.Delete(accountSnapshotKey(hash)); err != nil {
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log.Crit("Failed to delete account snapshot", "err", err)
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}
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}
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// ReadStorageSnapshot retrieves the snapshot entry of an storage trie leaf.
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func ReadStorageSnapshot(db ethdb.KeyValueReader, accountHash, storageHash common.Hash) []byte {
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data, _ := db.Get(storageSnapshotKey(accountHash, storageHash))
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return data
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}
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// WriteStorageSnapshot stores the snapshot entry of an storage trie leaf.
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func WriteStorageSnapshot(db ethdb.KeyValueWriter, accountHash, storageHash common.Hash, entry []byte) {
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if err := db.Put(storageSnapshotKey(accountHash, storageHash), entry); err != nil {
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log.Crit("Failed to store storage snapshot", "err", err)
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}
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}
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// DeleteStorageSnapshot removes the snapshot entry of an storage trie leaf.
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func DeleteStorageSnapshot(db ethdb.KeyValueWriter, accountHash, storageHash common.Hash) {
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if err := db.Delete(storageSnapshotKey(accountHash, storageHash)); err != nil {
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log.Crit("Failed to delete storage snapshot", "err", err)
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}
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}
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// IterateStorageSnapshots returns an iterator for walking the entire storage
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// space of a specific account.
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func IterateStorageSnapshots(db ethdb.Iteratee, accountHash common.Hash) ethdb.Iterator {
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return db.NewIteratorWithPrefix(storageSnapshotsKey(accountHash))
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}
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