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https://github.com/ethereum/go-ethereum.git
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66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
// Copyright 2023 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 ethconfig
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import "fmt"
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// HistoryMode represents the blockchain history mode for pruning.
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type HistoryMode uint32
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const (
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AllHistory HistoryMode = iota // Keep all history
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PrunedHistory // Prune history beyond StateHistory and TransactionHistory
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)
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func (mode HistoryMode) IsValid() bool {
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return mode == AllHistory || mode == PrunedHistory
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}
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// String implements the stringer interface.
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func (mode HistoryMode) String() string {
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switch mode {
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case AllHistory:
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return "full"
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case PrunedHistory:
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return "pruned"
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default:
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return "unknown"
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}
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}
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func (mode HistoryMode) MarshalText() ([]byte, error) {
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switch mode {
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case AllHistory:
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return []byte("full"), nil
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case PrunedHistory:
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return []byte("pruned"), nil
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default:
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return nil, fmt.Errorf("unknown history mode %d", mode)
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}
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}
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func (mode *HistoryMode) UnmarshalText(text []byte) error {
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switch string(text) {
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case "full":
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*mode = AllHistory
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case "pruned":
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*mode = PrunedHistory
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default:
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return fmt.Errorf(`unknown history mode %q, want "full" or "pruned"`, text)
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}
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return nil
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}
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