Roy Crihfield
761d60acdf
The Geth `core/state` and `trie` packages underwent a big refactor between `v1.11.6` and `1.13.14`. This code, which was adapted from those, needed corresponding updates. To do this I applied the diff patches from Geth directly where possible and in some places had to clone new parts of the Geth code and adapt them. In order to make this process as straightforward as possible in the future, I've attempted to minimize the number of changes vs. Geth and added some documentation in the `trie_by_cid` package. Reviewed-on: #5
53 lines
2.0 KiB
Go
53 lines
2.0 KiB
Go
// Copyright 2015 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 trie
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import (
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"errors"
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"fmt"
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"github.com/ethereum/go-ethereum/common"
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)
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// ErrCommitted is returned when a already committed trie is requested for usage.
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// The potential usages can be `Get`, `Update`, `Delete`, `NodeIterator`, `Prove`
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// and so on.
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var ErrCommitted = errors.New("trie is already committed")
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// MissingNodeError is returned by the trie functions (Get, Update, Delete)
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// in the case where a trie node is not present in the local database. It contains
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// information necessary for retrieving the missing node.
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type MissingNodeError struct {
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Owner common.Hash // owner of the trie if it's 2-layered trie
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NodeHash common.Hash // hash of the missing node
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Path []byte // hex-encoded path to the missing node
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err error // concrete error for missing trie node
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}
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// Unwrap returns the concrete error for missing trie node which
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// allows us for further analysis outside.
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func (err *MissingNodeError) Unwrap() error {
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return err.err
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}
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func (err *MissingNodeError) Error() string {
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if err.Owner == (common.Hash{}) {
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return fmt.Sprintf("missing trie node %x (path %x) %v", err.NodeHash, err.Path, err.err)
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}
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return fmt.Sprintf("missing trie node %x (owner %x) (path %x) %v", err.NodeHash, err.Owner, err.Path, err.err)
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}
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