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51 lines
1.9 KiB
51 lines
1.9 KiB
// Copyright 2024 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 database
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import (
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"github.com/ethereum/go-ethereum/common"
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)
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// Reader wraps the Node method of a backing trie reader.
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type Reader interface {
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// Node retrieves the trie node blob with the provided trie identifier,
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// node path and the corresponding node hash. No error will be returned
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// if the node is not found.
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//
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// Don't modify the returned byte slice since it's not deep-copied and
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// still be referenced by database.
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Node(owner common.Hash, path []byte, hash common.Hash) ([]byte, error)
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}
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// PreimageStore wraps the methods of a backing store for reading and writing
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// trie node preimages.
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type PreimageStore interface {
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// Preimage retrieves the preimage of the specified hash.
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Preimage(hash common.Hash) []byte
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// InsertPreimage commits a set of preimages along with their hashes.
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InsertPreimage(preimages map[common.Hash][]byte)
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}
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// Database wraps the methods of a backing trie store.
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type Database interface {
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PreimageStore
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// Reader returns a node reader associated with the specific state.
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// An error will be returned if the specified state is not available.
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Reader(stateRoot common.Hash) (Reader, error)
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}
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