121 lines
4.1 KiB
Go
121 lines
4.1 KiB
Go
// Copyright 2020 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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"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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// ReadPreimage retrieves a single preimage of the provided hash.
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func ReadPreimage(db ethdb.KeyValueReader, hash common.Hash) []byte {
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data, _ := db.Get(preimageKey(hash))
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return data
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}
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// ReadCode retrieves the contract code of the provided code hash.
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func ReadCode(db ethdb.KeyValueReader, hash common.Hash) []byte {
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// Try with the prefixed code scheme first, if not then try with legacy
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// scheme.
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data := ReadCodeWithPrefix(db, hash)
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if len(data) != 0 {
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return data
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}
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data, _ = db.Get(hash.Bytes())
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return data
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}
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// ReadCodeWithPrefix retrieves the contract code of the provided code hash.
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// The main difference between this function and ReadCode is this function
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// will only check the existence with latest scheme(with prefix).
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func ReadCodeWithPrefix(db ethdb.KeyValueReader, hash common.Hash) []byte {
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data, _ := db.Get(codeKey(hash))
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return data
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}
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// ReadTrieNode retrieves the trie node of the provided hash.
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func ReadTrieNode(db ethdb.KeyValueReader, hash common.Hash) []byte {
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data, _ := db.Get(hash.Bytes())
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return data
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}
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// HasCode checks if the contract code corresponding to the
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// provided code hash is present in the db.
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func HasCode(db ethdb.KeyValueReader, hash common.Hash) bool {
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// Try with the prefixed code scheme first, if not then try with legacy
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// scheme.
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if ok := HasCodeWithPrefix(db, hash); ok {
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return true
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}
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ok, _ := db.Has(hash.Bytes())
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return ok
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}
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// HasCodeWithPrefix checks if the contract code corresponding to the
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// provided code hash is present in the db. This function will only check
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// presence using the prefix-scheme.
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func HasCodeWithPrefix(db ethdb.KeyValueReader, hash common.Hash) bool {
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ok, _ := db.Has(codeKey(hash))
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return ok
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}
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// HasTrieNode checks if the trie node with the provided hash is present in db.
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func HasTrieNode(db ethdb.KeyValueReader, hash common.Hash) bool {
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ok, _ := db.Has(hash.Bytes())
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return ok
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}
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// WritePreimages writes the provided set of preimages to the database.
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func WritePreimages(db ethdb.KeyValueWriter, preimages map[common.Hash][]byte) {
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for hash, preimage := range preimages {
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if err := db.Put(preimageKey(hash), preimage); err != nil {
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log.Crit("Failed to store trie preimage", "err", err)
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}
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}
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preimageCounter.Inc(int64(len(preimages)))
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preimageHitCounter.Inc(int64(len(preimages)))
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}
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// WriteCode writes the provided contract code database.
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func WriteCode(db ethdb.KeyValueWriter, hash common.Hash, code []byte) {
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if err := db.Put(codeKey(hash), code); err != nil {
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log.Crit("Failed to store contract code", "err", err)
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}
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}
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// WriteTrieNode writes the provided trie node database.
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func WriteTrieNode(db ethdb.KeyValueWriter, hash common.Hash, node []byte) {
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if err := db.Put(hash.Bytes(), node); err != nil {
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log.Crit("Failed to store trie node", "err", err)
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}
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}
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// DeleteCode deletes the specified contract code from the database.
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func DeleteCode(db ethdb.KeyValueWriter, hash common.Hash) {
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if err := db.Delete(codeKey(hash)); err != nil {
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log.Crit("Failed to delete contract code", "err", err)
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}
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}
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// DeleteTrieNode deletes the specified trie node from the database.
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func DeleteTrieNode(db ethdb.KeyValueWriter, hash common.Hash) {
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if err := db.Delete(hash.Bytes()); err != nil {
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log.Crit("Failed to delete trie node", "err", err)
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}
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}
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