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core, eth, les, trie: add a prefix to contract code (ethereum#21080)
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// Copyright 2020 The go-ethereum Authors | ||
// This file is part of the go-ethereum library. | ||
// | ||
// The go-ethereum library is free software: you can redistribute it and/or modify | ||
// it under the terms of the GNU Lesser General Public License as published by | ||
// the Free Software Foundation, either version 3 of the License, or | ||
// (at your option) any later version. | ||
// | ||
// The go-ethereum library is distributed in the hope that it will be useful, | ||
// but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
// GNU Lesser General Public License for more details. | ||
// | ||
// You should have received a copy of the GNU Lesser General Public License | ||
// 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 ( | ||
"github.com/ethereum/go-ethereum/common" | ||
"github.com/ethereum/go-ethereum/ethdb" | ||
"github.com/ethereum/go-ethereum/log" | ||
) | ||
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// ReadPreimage retrieves a single preimage of the provided hash. | ||
func ReadPreimage(db ethdb.KeyValueReader, hash common.Hash) []byte { | ||
data, _ := db.Get(preimageKey(hash)) | ||
return data | ||
} | ||
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// WritePreimages writes the provided set of preimages to the database. | ||
func WritePreimages(db ethdb.KeyValueWriter, preimages map[common.Hash][]byte) { | ||
for hash, preimage := range preimages { | ||
if err := db.Put(preimageKey(hash), preimage); err != nil { | ||
log.Crit("Failed to store trie preimage", "err", err) | ||
} | ||
} | ||
preimageCounter.Inc(int64(len(preimages))) | ||
preimageHitCounter.Inc(int64(len(preimages))) | ||
} | ||
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// ReadCode retrieves the contract code of the provided code hash. | ||
func ReadCode(db ethdb.KeyValueReader, hash common.Hash) []byte { | ||
// Try with the legacy code scheme first, if not then try with current | ||
// scheme. Since most of the code will be found with legacy scheme. | ||
// | ||
// todo(rjl493456442) change the order when we forcibly upgrade the code | ||
// scheme with snapshot. | ||
data, _ := db.Get(hash[:]) | ||
if len(data) != 0 { | ||
return data | ||
} | ||
return ReadCodeWithPrefix(db, hash) | ||
} | ||
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// ReadCodeWithPrefix retrieves the contract code of the provided code hash. | ||
// The main difference between this function and ReadCode is this function | ||
// will only check the existence with latest scheme(with prefix). | ||
func ReadCodeWithPrefix(db ethdb.KeyValueReader, hash common.Hash) []byte { | ||
data, _ := db.Get(codeKey(hash)) | ||
return data | ||
} | ||
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// WriteCode writes the provided contract code database. | ||
func WriteCode(db ethdb.KeyValueWriter, hash common.Hash, code []byte) { | ||
if err := db.Put(codeKey(hash), code); err != nil { | ||
log.Crit("Failed to store contract code", "err", err) | ||
} | ||
} | ||
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// DeleteCode deletes the specified contract code from the database. | ||
func DeleteCode(db ethdb.KeyValueWriter, hash common.Hash) { | ||
if err := db.Delete(codeKey(hash)); err != nil { | ||
log.Crit("Failed to delete contract code", "err", err) | ||
} | ||
} | ||
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// ReadTrieNode retrieves the trie node of the provided hash. | ||
func ReadTrieNode(db ethdb.KeyValueReader, hash common.Hash) []byte { | ||
data, _ := db.Get(hash.Bytes()) | ||
return data | ||
} | ||
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// WriteTrieNode writes the provided trie node database. | ||
func WriteTrieNode(db ethdb.KeyValueWriter, hash common.Hash, node []byte) { | ||
if err := db.Put(hash.Bytes(), node); err != nil { | ||
log.Crit("Failed to store trie node", "err", err) | ||
} | ||
} | ||
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// DeleteTrieNode deletes the specified trie node from the database. | ||
func DeleteTrieNode(db ethdb.KeyValueWriter, hash common.Hash) { | ||
if err := db.Delete(hash.Bytes()); err != nil { | ||
log.Crit("Failed to delete trie node", "err", err) | ||
} | ||
} |
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